Banner heading  

dryhomes
43 Burton Street
Brixham
Devon TQ5 9JA
Tel: 01803859303 dry@dryhomes.net


   
Home page
Diagnose your problem
Condensation solutions
Products
Condensation information
FAQ's and Self help
About Dryhomes
Contacts
 

 

 

Buy Condensation Solving Equipment

 

Positive Pressure Ventilation Heat Recover Ventilation Humidity Control Fans Roof Ventilation Things that don't work Self Help De-Humidifiers
Positive Input Ventilation questions and information
All Drimaster Range
   
Are they cheap to run?  
YES. They cost pence a week to run and you get free heat from the sun as a bonus. There is even heat coming up from the house that is recycled.  The Drimaster Heat uses a modest amount of electricity to temper the incoming air on cold winter days. Drimasters are automatic so they switch off when not needed to combat condensation.
     
Do they really work?   YES. Positive input ventilation is without doubt the best way to combat condensation. We have installed and tested over a 1000 units in Devon and sold 100s more on line. The damp goes away in a few days. Only 3 customers have returned a PIV since we began in 1986. See Testimonials
     
Are they quiet?
YES.  They are whisper quiet. High quality centrifugal fan and electronic controls. We never have any complaints about noise.
     

Who can install one for me?
 

A competent DIY er can install a unit in a morning. We always advise you to have the circuit checked by an electrician before using.
A qualified Electrician will normally take about 2-3 hours even if he was unfamiliar with the unit providing you have selected a suitable position where you want the diffuser fitted.

     
What would I need to fit one as a DIY project?
Plasterboard saw to cut a 9” hole in the ceiling. Tape to measure the site position. Pencil. Screwdriver. Drill to fit diffuser. Ladder or steps to loft. Power cable and light.
Electrical screwdriver. Connection box (the fused spur and transformer are included in the box)... 1.5mm cable to the lighting circuit. Cable clips
     
Why buy from Dryhomes?

After 25 years we are still UK leaders in domestic condensation control
Dryhomes are independent of all suppliers so we can select from a wide range of
products
B
est prices and fantastic service
Our shop has no hidden extras - V.A.T. included - Delivery UK included - no card surcharges
Expert advice by phone, email or chat
- no call centre or sales staff

     
What is the difference between the Standard, Eco and the Heat models?  

The Standard Drimaster will control your condensation.
The Eco 2000 has an automatic sensor which keeps the machine running to input heat when the roof is hotter than the house - harvesting the suns energy.
The Drimaster Heat has a small heater to automatically temper the incoming air only when it is particularly cold....it is especially suited to bungalows where the incoming air is close to the occupants.

   
How long do they take to work?
The machine has an immediate effect but allow 3-6 days to balance the humidity and longer to dry the house out completely.
Tip: Set the machine initially 1 speed higher than the number of bedrooms and try reducing the speed buy one after about a week. Each house is different and once you have the right setting for your home you can leave the unit to work automatically
     
Will one unit serve the whole house?   Yes. unless the home is extremely large - over 5 bedrooms - or it is built over a lake. The unit has 6 air speeds and plenty of capacity to resolve the problem
 
Does it need more power in the roof

No. All the range are low power and can be fitted to the lighting circuit.

     
What happens if the power is switched off?
The damp comes back if left off for a long time …. but after a power cut the machine will self start and then reset itself to your chosen setting
   
Is my roof is suitable?
The roof needs some airflow. if you are in the roof and you see daylight the roof is suitable. If not check outside for sofit vents or roof vents.  Check no one has covered the sofit vents with insulation or cladding. The machine relies on a constant supply of air. Dryhomes roof vents can be DIY fitted and can be found on our products page
   
What does the diffuser look like?
It is white, square and about 1’0” square. After a day or two you forget it's there.
Are they automatic?
YES. All our products are electronically controlled. On hot summer days they switch off. Note :- If you buy the sensor model, which can detect if a cold room needs heating from the air in the roof, it will keep running to warm the house
Where does the damp air go?
No home is air tight or you would suffocate. The damp air escapes via cracks and crevices and window trickle vents etc
How easy is it to control?
Once set you just leave the unit alone. All initial settings are made by pressing one button on the machine: 6 settings to suit homes up to 5 bedrooms. The humidity can be monitored with a thermo-hygrometer available from us.
     
Is it a substitute for fans in the kitchen and bathroom?   Building regulations require ventilation to the bathroom and kitchen but you will get an instant benefit from installing a Drimaster. Some customers use it as the sole means of ventilation in their home.
How can I tell if it stops running?
The windows will mist up again like before – people get used to drier homes very fast and take the unit for granted. See Troubleshooting at the bottom of the page.
Can I still dry clothes on the radiators?
Clothes drying releases vast amounts of invisible water vapour into the air..  Any self inflicted problems must be matched by an increase in the air movement through the unit. Dry clothes out of doors whenever possible – or use a vented tumble drier
   
What is solar gain?  
The air in the roof is warmer than air in the house on most days from March to September. In winter there is little or no solar gain except on sunny days. But three things are worth remembering:
  1. heating the air costs only 20% of the average heating bill (the other 80% heats the walls, floor and roof).
  2. A dry house “feels” warmer at a lower temperature so you can turn down the heat slightly in winter and feel just as warm.
  3. Dry air costs less to heat than damp air - it's a fact!
What power is needed?
The unit is protected by a 1amp fuse so any convenient light circuit can be used. It runs at 12 volts and the transformer is included. Slight difference with the Drimaster heat but it still uses the lighting circuit.
Is there any maintenance?
NO. Apart from a filter change after 5 years there is no maintenance required. Replacement filters are available from Dryhomes
Will the mould go away?
Kill off the mould with fungicide or dilute bleach (test a small area first). The mould will not return when the Drimaster has the condensation is under control.
How big is the unit?
The size of a microwave oven but not as heavy and is quiet. The unit is in the roof. The only part you see is the diffuser which is white plastic about 300mm square.
How do I make a return?
We allow 21 days to send a unit back, complete in its original packaging. You need a return reference number RRN so please phone our office. Obviously we want happy customers so I would like you to chat with our office staff so we can discuss any of your problems. We may be able to sort it out!
How can I tell if the machine is running?
Has the damp come back? If high up hold a bit of cotton or wool near the diffuser on a broom handle. If the ceiling is low you can feel the incoming dry air with your hand.
Where is the best site for the diffuser?
In a normal house the top of the stairwell is best. In bungalows fit one in the middle of the hall ceiling.
Do I still have to open windows?
No – but you must keep internal doors ajar whenever possible - when leaving the house and during the day.
Are some roofs better than others?
The bigger the roof the better supply of fresh air is available to your home. Also south facing aspects give more solar gain and this can be considered a bonus. However small roof sloping the wrong way will still work if the ventilation is good
Why pay more for the Drimaster 2000?
Good question. The sensor will monitor if a bedroom is colder than the air in the roof and will keep the machine running to warm the house. It switches off when there is no more heat gain. Clearly the hotter the roof and the cooler room the quicker you will recoup the initial cost
What happens if I go on holiday?
Leave doors ajar and you come home to a fresh house. This is wonderful if you install the unit in a holiday home where use is intermittent. TIP: Make sure there is always power especially if the electricity is metered
Will the machine work in my en-suite beyond the bedroom?
It is likely that this room will be improved by the unit but is unlikely to resolve major problems. Showers and bathrooms must be vented. We always specify humidity controlled fans rather than timed fans – Tip: make sure they are high quality or the noise will be intolerable at night. A bathroom without vents is below current Building Standards F1
TROUBLESHOOTING.

 

The machine is running but does not seem to work

  • Are you keeping the internal doors ajar most of the time. This is especially important when you go out as it allows air into the remote problem areas.
  • Have you cleaned off the original mould with fungicide or dilute bleach? The machine will not remove the live mould and staining. This should be done when the machine is fitted.
  • The machine is set too low. I like to begin at 2 for a bungalow and 4 for a house. This is a good guide. If the effect is not great enough put the power setting up. By starting low you can increase till the correct setting is found.
  • Is it particularly cold and damp outside?  Inevitably there will be periods of high humidity outside when even positive pressure cannot cope – but it is still working for you.
  • Are you sure the roof is properly ventilated. Sofit vents are required to maintain the roof timbers in a good condition as well as keeping a good air flow.
  • Is the problem in a remote room? The excellent results will be in rooms directly off the stair well or hall. The control of remote rooms will be much reduced unless the doors are wide open.
  • If a water tank in the roof is open tape it over with polythene to stop evaporation. This should be done anyway to stop foreign bodies entering the water supply.
  • Make sure no fan is exhausting into the roof!
  • TOP TIP . If you think the unit is not working well stop the unit for a day or two and note how quickly the damp problem returns!     
   
The machine has stopped running  
  • If the roof is hot the unit will switch off
  • If there is no light on the setting button the power supply is off
  • When a light is on and the roof is cool contact dryhomes with your invoice number and the reference number found on the unit. We will liaise with the maker.
The damp does has come back
  • Check to see if the machine is powered and running.
  • Have any changes been made to the home – double glazing, draught proofing, more people (especially babies), plants and fish tanks…. Etc. each change can affect the humidity.
  • Set the unit to a higher power by pressing the single button. Increase the power one step at a time
The unit is making a noise
  • Most likely a mechanical fault – contact dryhomes
 

Heat Recover Ventilation questions and information
   

Why is a HRV system so good at controlling damp?

 

The damp air, from kitchen or bathroom is forced outside and replaced with 'dry' air from outside. Expensive heat comes back into the home. So water vapour will not migrate around the home causing condensation problems in any cold rooms.
The remote control box switches the boost on only when there is dangerously high humidity so it is extremely efficient and effective. See Testimonials

   

Are they cheap to run?

YES VERY. Typically 2-3 units of electricity per week. The heat recovery unit is about *80% efficient – so 80% of the heat leaving with the damp air comes back with clean, fresh drier air from outside. Coupled with very finely engineered fans, remote control box and being 12 volts HRV are among the cheapest fans to run.   A HRV will cost a few pence a day - 10 times less than a dehumidifier. With energy prices set to rise steeply this is a very important consideration when selecting a system.
*depends on a few factors including the temperature of the outgoing and incoming air.

     
Why buy from Dryhomes?

After 25 years we are still UK leaders in domestic condensation control
Dryhomes are independent of all suppliers so we can select from a wide range of
products
B
est prices and fantastic service
Our shop has no hidden extras - V.A.T. included - Delivery UK included - no card surcharges
Expert advice by phone, email or chat
- no call centre or sales staff

     

Why not open a window?

 

Burglars, dust, pollen and noise pollution may enter.
Heat will be lost.
Cold draughts will make the home uncomfortable.
The insulation quality of double glazing will be lost.

   

How long does it take to work?

 

The machine works immediately in the room in which it is installed – most commonly the bathroom or kitchen - and later in adjoining rooms. The machine stops water migrating around your home. See Boyle's Law if you want some science.

   
Are they quiet?  

YES.  The trickle ventilation goes all the time and is barely audible. The boost makes more noise. The remote control can be set to "off in the dark" so they may be installed in a bedroom

   

Why chose a HRV rather than a PIV?

 

A heat recovery ventilator fitted through a wall is the best solution for flats without a loft.
The PIV is superior in performance, and easier to fit, but needs air from a ventilated roof space.

   

What happens if the power is switched off?

 

The damp comes back…. after a power cut the machine will self start and then reset itself to your chosen setting

   
Are they automatic?  

YES. HRVs are electronically controlled and switch on and off according to humidity. They also have a manual over ride so if you want to boost the fan, say to get rid of cooking smells, you can

   
Does old air come back in?  
No cross-contamination takes place via the well designed outer grill
   

Does it comply with Building Regs Part F1?

 
YES
   

How easy is it to control?

 

Once set you can leave the unit alone. The control unit allows the two settings for the trickle but the rest is automatic.

   

Can I still dry clothes on the radiators?

 

Clothes drying releases vast amounts of invisible water vapour into the air..  Any self inflicted problems must be matched by an increase in the air movement through the unit. Dry clothes out of doors whenever possible – or use a vented tumble drier

   

Does it cause draughts?

 
NO. There is no difference between the air coming in and out so no draughts are made.
   

Does the unit replace the heating system?

 

No – it is to control dampness with minimal heat loss.

     
Are they guaranteed?   The machines have a no quibble guarantee for 2 years from the manufacturers. The filters need washing in the sink when they get dirty.
   

What power is needed?

 

Any convenient source of power can be used. An isolating 3amp fused spur is required. It runs at 12 volts from the control box so is safe for kitchens and bathroom. An electrician should check the installation for safety.

   

Is there any maintenance?

 

NO. The filters need washing in soapy water occasionally but no tools are required.

   
Will the mould go away?  

You must kill it with fungicide or dilute bleach (test a small section first). The mould will not return once the condensation is under control.

   

How do I make a return?

 

We allow 21 days to send a unit back, complete in its original packaging. You need a return reference number RRN so please phone our office. Obviously we want happy customers so I would like you to chat with our office staff so we can discuss any of your problems. We may be able to sort it out! See Terms and conditions.

   

How can I tell if the machine is running?

 

Has the damp come back? Listen carefully for the trickle fan or pull the over ride cord and hear the boost. You can feel the incoming air with your hand

   

Heat Recovery Ventilator Humidity Controlled fan - which is best ?

HRV v HCF

 

If there is no fan a new hole must be drilled and wiring will be needed. The installation costs are similar to HCF. The HRV is far superior, more effective and much cheaper to run but it costs more ....better to spend on the best and save heating bills.
A HCF can replace an existing fan cheaply but will not be as effective - it is a minimal measure to help.
If you have a roof you should consider installing a PIV?

   

Where is the best site for the HRV?

 

An outside wall of the hall, kitchen or bathroom.

   

Do I still have to open windows?

 

No – but do keep internal doors ajar whenever possible.

   

Why is it better than a humidity controlled fan.

 
Good question. The sensor is very accurate and it is also away from the fan making the control very effective. The HRV will not waste energy like an extractor fan. As well as extracting wet air it brings in new dry air – this is a positive process which is much more effective in controlling condensation.

Will it dry the whole house?

Not normally. The HRV will have a dramatic effect in a flat or very small home. Some homes have problems in one area – the HRV is ideal to tackle this problem automatically. Whole house system is the PIV.

   

What is the correct setting?

 

The simple answer is - the one that works most of the time. A low setting (RH 65%) will be most effective but may result in the boost being on too often. Experiment and find setting near 70% that will solve your problem. NOTE: Mould starts at 80% but will continue growing at lower humidity.

   

What happens if I go on holiday?

 

Nothing – you come home to a fresh house. This is brilliant if you install the unit in a holiday home where use is intermittent. TIP: Make sure there is always power especially if the electricity is metered. Leave the doors open.

   

Can anyone fit a HRV?

 

A handy DIY er can fit a HRV in a morning. Most people must hire a 156mm drill to make the hole in the wall.  We recommend that the final connection, if not done by a electrician with part P, be checked by a competent professional. A window kit is available if no hole can be drilled through a wall.

   

What will I need to fit one?

 

Drill to cut a 150mm hole in the wall. Tape to measure the site position. Pencil. Screwdriver. Drill to fit units to the wall. Ladder or steps to ceiling.
Electrics. Electrical screwdriver. Surface trunking. Connection box to the lighting circuit, double pole switched spur.  Cable. Cable clips.

 

TROUBLESHOOTING.

 

The machine is running but does not seem to work

  • Have you cleaned off the original mould with fungicide or dilute bleach? The machine will not remove the live mould and staining. This must be done when the machine is fitted.
  • Are you keeping the doors ajar most of the time. Especially important when you go out as it allows air into the remote corners.
  • The machine is set too high. I like to begin at 75% relative humidity. This is a good guide. If the effect is not great enough put the setting down to 70% (it will now start boost earlier and continue for longer. By starting high you can decrease till the correct setting is found. TIP not the same advice for a PIV where you increase the power!
  • Is it particularly cold and damp outside?  Inevitably there will be periods of high humidity outside when even a HRV cannot cope – but it is still reducing the problem.
  • Is the problem in a remote room? The control of remote rooms will be much reduced unless the doors are wide open
  • A second unit may be required for such locations

The machine does not run

  • If there is no light on the control box the power supply is off. Rectify
  • If the power button is red and the fan is stopped pull the over ride. If still no boost phone dryhomes. We will liaise with the manufacturer

The machine runs continuously

  • A heat recovery ventilator is designed to run at a slow trickle continuously but if it runs on boost a lot of the time it may need adjusting
  • The control knob has been moved too low a setting - gently set higher till it stops
  • The manual over ride has been pulled (2 red lights showing). Pull once to cancel.

The damp does has come back

  • Check to see if the machine is powered and running.
  • Have any changes been made to the home – double glazing, draught proofing, more people (especially babies), plants and fish tanks…. Etc. each change can affect the humidity.
  • Set the unit to be more sensitive by moving the dial to a LOWER setting. The unit will be activated at lower humidity levels.

The unit is making a noise

Most likely a mechanical fault – contact dryhomes
 

Humidity Control Fans HCFs questions and information
   
Why is a HCF good at controlling damp?  
A HCF expels water vapour outside so it cannot leave the bathroom or kitchen and cause condensation problems in other rooms. The effectiveness of the fan depends on the AUTOMATIC switching to control of humidity. No human being is capable of judging how long to leave a fan running.
   
Do they cost much to run?  
There is always heat loss when extraction is used. However remember 2 things: - only 20% of your heating bill is used to heat the air and a dry home feels warmer so can be heated to a lower temperature.
   
What's wrong with a timed fan?  
Good question.
Timed fans do not detect humidity and may come on when not needed or not run long enough solve a damp problem.
Humans cannot detect humidity with any accuracy but HCFs can
.........Timed fans simply don't work!
     
Why buy from Dryhomes?

After 25 years we are still UK leaders in domestic condensation control
Dryhomes are independent of all suppliers so we can select from a wide range of
products
B
est prices and fantastic service
Our shop has no hidden extras - V.A.T. included - Delivery UK included - no card surcharges
Expert advice by phone, email or chat
- no call centre or sales staff

     
How do HCFs work?  
An automatic controller switches the fan on and off only when required. Damp, stale, unhealthy air is expelled so it cannot cause condensation problems in other rooms. They are good for en-suite and localised problems. Especially useful in remote rooms where the PPV or HRV air cannot circulate
   
Why not open a window?  

Burglars, dust, pollen and noise pollution may enter.
Heat will escape.
Cold draughts will make the home uncomfortable.
The insulation quality of double glazing will be lost.
You've probably tried it and it does not work!

   
How long does it take to work?  
The fans work immediately in the room in which it is installed – most commonly the bathroom or kitchen. Adjoining rooms benefit as well because the water vapour no longer migrates into the rest of the house. See Boyle's Law if you want some science.
   
Are they quiet?  
It depends on how much you pay. A cheap fan will be quite noisy but still effective. Middle range fans are quiet and have a longer life. The top quality HCF in our range is whisper quiet, very powerful, and efficient and has a very long design life.
   
Why chose a HCF rather than a HRV?  
The main benefit of the HCF is that it can be installed into a 100mm hole and so replaces an existing timed fan in minutes (a permanent and switched power supply are needed).  The HCF can be installed through a roof void to save cost. A heat recovery ventilator is brilliant for venting bathrooms and kitchens and is the best machine for flats but needs a 150mm hole in an outside wall. The heat recovery system is very much cheaper to run and much more effective in reducing humidity than a HCF ….. So if your installation requires a new hole being drilled and new electrics then the HRV is the one to buy.
   
What happens if the power is switched off?  
The damp comes back…. after a power cut the machine will self start and then reset itself to your chosen setting
   
Are they automatic?  
HCFs are fully automatically and switch on and off according to humidity. Some do have a manual over ride so if you want to boost the fan, say to get rid of cooking smells, you can    
   
How easy is it to control?  
Once set you can leave the unit alone.
   
Can I still dry clothes on the radiators?  
Clothes drying, fish tanks and indoor plants add water and create moulds.  Self inflicted dampness needs an increase in the ventilation and makes the system have to work harder. Any system can be overpowered by the family lifestyle. Drying clothes out of doors when possible is VERY eco friendly and cheap.
   
Does it cause draughts?  
It can cause small draughts due to air movement in the home.
   
Is there any maintenance?  
NO. Once installed there is no need to do anything apart for keeping the electric supply on. Any filters fitted need washing in the sink when they get dirty.
   
Will the mould go away?  
Only if you kill it with fungicide or dilute bleach – best done when the machine is installed. The mould will not return when the condensation is under control.
   
How do I make a return?  
We allow 21 days to send a unit back, complete in its original packaging. You need a return reference number RRN so please phone our office. Obviously we want happy customers so I would like you to chat with our office staff so we can discuss any of your problems. We may be able to sort it out! See Terms and conditions.
   
How can I tell if the machine is running?  
Listen for the air flow.
   
I have no fan in the bathroom at all – which fan is the best?  
If there is no existing hole a new one will have to be drilled. Also new electric wiring will be needed. For these reasons it is very wise to install a HRV because the installation costs are similar to a small 100mm fan. The HRV is far superior to the HCF as it is more effective and very cheap to run.
If you have a conventional roof have you thought of installing a PIV? They are the best…
   
Where is the best site for the HRV?  
An outside wall of the hall, kitchen or bathroom. TIP: The best machine is capable of pumping air for 12 meters and so can be ducted through ceilings to the outside and save the expense of drilling a hole. NEVER extract straight into the roof or it will get very damp and can cause trouble.
   
Do I still have to open windows?  
No – but it will help whenever possible.
   
Will it dry the whole house?  
NO. The HCF will have a good effect in a flat or very small home. Some homes have problems in one area – the HCF is ideal to tackle a minor  problem automatically. The whole house system is the PIV which is installed in the roof.
   
What is the correct setting?  
The simple answer is - the one that works most of the time. A low setting (RH 65%) will be most effective but may result in the fan running too often. Experiment and find setting near 70% that will solve your problem. NOTE: Mould starts at 80% but will continue growing at lower humidity.
   
What happens if I go on holiday?  
Nothing – you come home to a fresh house.  A major benefit. This is brilliant if you install the unit in a holiday home where use is intermittent. TIP: Make sure there is always power especially if the electricity is metered. Leave the doors open.
   
What will I need to fit one?  
Screwdriver. Drill to screw the unit to the ceiling/wall. Ladder or steps up to the ceiling.
   
Can anyone fit a HCF?  

A handy DIY er can replace a timed fan for a humidity controlled fan in a few minutes. Starting without a fan in a bathroom or kitchen we recommend installation from a professional electrician who can offer safety advice. All circuits should be checked by an electrician.

   
TROUBLESHOOTING.  

The machine is running but does not seem to work

  • Have you cleaned off the original mould with fungicide or dilute bleach? The machine will not remove the live mould and staining. This must be done when the machine is fitted.
  • Are you keeping the doors ajar most of the time. Especially important when you go out as it allows air into the remote corners.
  • The machine is set too high. I like to begin at 75% relative humidity. This is a good guide. If the effect is not great enough put the setting down to 70% (it will now start boost earlier and continue for longer). By starting high you can decrease till the correct setting is found. TIP: Not the same advice for a PIV where you increase the power!
  • Is it particularly cold and damp outside?  Inevitably there will be periods of high humidity outside when a HCF cannot cope – but it is still reducing the problem.
  • Is the problem in a remote room? The control of remote rooms will be much reduced unless the doors are wide open. Maybe need more background heat.

The machine is stopped

  • If there is no light on the control box the power supply is off. Rectify
  • If the power button is red and the fan is stopped pull the over ride. If still not running phone dryhomes. We will liaise with the manufacturer.

The damp does has come back

  • Check to see if the machine is powered and running.
  • Have any changes been made to the home – double glazing, draught proofing, more people (especially babies), plants and fish tanks…. etc. each change can increase the humidity.
  • Set the unit to be more sensitive by moving the dial to a LOWER setting.

The unit is making a noise

  • Most likely a mechanical fault – contact dryhomes
   
 

Roof Ventilation questions
Why ventilate the roof?
 

A dry roof is essential. ALL our PPV systems demand a small amount of 'dry' air from the loft space.
Condensation in lofts can cause rot and insect attack.
Without management this will become a bigger problem, damp insulation will not be effective and heating bills will rise.
Dry rot is unlikely because condensation only occurs under humid conditions and dry rot needs a constant supply  of water.

 
Why does a PPV need a dry roof?
 
The PPV needs a constant gentle supply of outside air which is dry so the roof must have a good airflow to supply the unit.
 
How can I tell if my roof needs ventilation?
 

Turn off the light in the roof and see how much daylight you can see. If none - you have a 'tight roof' which needs venting.
Mould growth on goods stored in the roof is a sure sign of a ventilation problem.
Damp felt, beads of water on slates, mould on goods, white fungal growth on timbers are signs that the roof is in danger.

 
What causes Condensation in lofts?
 
Leaking fan vents from below should be replaced
Lack of sofit vents.Too few sofit vents. Are there any sofit vents? If so are they covered with insulation?
No tile vents. Have tile vents been fitted amongst the slates on the roof itself?
Has cladding covered the sofits so the roof cannot breath?
Water tanks without covers cause evaporation?
 
Can I improve ventilation myself ?
 
YES. If you roof has under felt Dryhomes roof vents can be used to open up air ducts

BENEFITS

  • Very cheap and effective
  • Only 1 "dryhomes vent" is needed per 5mtrs of floor space.
  • Quick to install - the average roof would take 1 hour
  • No scaffolding - installation is achieved from inside the roof
  • Can be DIY fitted with no tools
 

Methods which do NOT Work
Are passive vents any good?   These are holes in the wall. They can help but are draughty and you loose a lot of heat which is very expensive. Passive ventilation is expensive to install and has variable results. Some good can be achieved by putting vents in cupboard doors. Think POSITIVE
     
Should I insulate the walls?   Insulation is to stop heat loss - not condensation. Not recommended.
     
Are the damp crystals any good in a wardrobe?   These have very little effect. The same could be achieved by keeping the door ajar. They attract moisture from the air but soon get saturated and cease to have ANY effect.
     
Should I try Anti-mould paint?
 

NO. Only for short term results. It merely masks the problem. The condensation still persists and the mould will come back.

 

Self Help

Lifestyle changes that can help cure condensation problems:

    General
  • Don't dry clothes inside you home – our top tip... but we know it can be difficult to follow
  • Tumble drier / Washing machine – use a condensing type  – otherwise it must be vented outside
  • Don't use butane or paraffin – they produce more water than the liquid fuel they burn!
  • Consider reducing the number/size of plants – water a plant and it gives off vapour
  • Don't put furniture against cold outside walls – mould grows on the back
  • Consider fitting trickle vents in the window frames
  • Remove aquariums which evaporate lots of vapour
  • Maintaining background heating at low level is better than rapid rises and falls
  • Leave doors of remote rooms, cupboards and wardrobes ajar to let air and heat circulate
  • Open windows and doors – on a warm, breezy day it's a great way to dry a soggy home
    Kitchen
  • Use lids when boiling vegetables
  • Consider using a pressure cooker - you get energy savings as well
  • Mop up any water so it doesn't evaporate into the home: drain sinks and bowls to stop evaporation
  • If a cooker hood is used run it on afterwards for 20 minutes - this only works if the hood vents outside!
  • Open window for half an hour and keep the kitchen door closed during cooking
    Bathroom
  • Shower less often and/or for a shorter time
  • Bathroom fan – leave the light on to keep it running for 20 minutes after a shower
  • Bathroom window – leave ajar for half an hour and keep the bathroom door closed after use

Benefits of Self Help Approach
  • It's free or quite cheap
  • Each change reduces condensation

Drawbacks to Self Help

  • It requires the co-operation of the whole family
  • It's hard to change enough to reduce the humidity to levels (less than 65%RH) to eliminate condensation problems
  • Opening windows results in uncontrolled heat loss and isn't environmentally friendly... and it's expensive!
  • It requires sacrifice - most of us don't want to pile on jumpers and live in draughts
  • Leaving windows open can create a security risk
About de-humidifiers
What's wrong with dehumidifiers?
 

Nothing as long as the problem is localised or small.
And you don't mind emptying them.
And you can stand the noise - especially at night when they should be running.
Any you can find a floor space to park it.
And you can live with 10 times the power consumption of a ventilation system that works.
Nothing at all. ....

     
Do you stock dehumidifiers?
  No. We advocate you borrow one for a while and then, when you still have black mould, you re-visit our products page.
See comments above