Soldato
This is what my Dad has done to his garage, it's made a huge difference. He has a dehumidifier that runs a few hours overnight and it stays really nice in there as he has a couple of classic cars in there so it's ideal.
Garage dehumidification
- Thread starter Scuzi
- Start date
This is what my Dad has done to his garage, it's made a huge difference. He has a dehumidifier that runs a few hours overnight and it stays really nice in there as he has a couple of classic cars in there so it's ideal.
Soldato
Yeh just seal the brickwork on the outside with the many sealers available and away you go........
I think as has already realised by the OP, the key to preventing condensation is letting the building breath. You don't seal the building up so much that the only way of getting rid of damp air is to use a dehumidifier - let the building breath, helping to get rid of the damp air.
Soldato
Ventilation lets it breathe, letting water soak through the walls certainly won’t be helping the situation, no matter how much you let it breathe
Soldato
Top work - insulation in there too??
Soldato
How often you got the heating on in there???
Impressive. I’ll look into that. Shouldn’t be *too* expensive.
To give an idea of the scale of the problem, here’s my toolbox. That’s with having the door open for 3 hours today so far.
Soldato
Yup....heat, insulation and ventilation neededImpressive. I’ll look into that. Shouldn’t be *too* expensive.
To give an idea of the scale of the problem, here’s my toolbox. That’s with having the door open for 3 hours today so far.
So basically:
- batten the walls
- put this stuff in between the battens - https://www.wickes.co.uk/Kingspan-TP10-Insulation-Board---2400-x-1200-x-25mm/p/180435
- board the rafters with the same stuff creating a ceiling
- seal the outer brickwork with storm dry
- add a heat source
- does ventilation not defeat the purpose of heating?
Soldato
No it helps in the summer when the heating isn’t on and allows for airflow.....you could get a closable vent, so close it up in winter and open it up in summer......
You really want a PIV in there. Something like this: https://www.amazon.co.uk/Nuaire-Dri...master&qid=1607890196&sr=8-1&tag=hydrukspg-21
Soldato
How will the ventilation stop the rain soaking through the walls as the OP stated????
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Can you get a dehumidifier with a pipe that runs outside. I have this from my gym and have insulted the pipe. Keeps the humidity below 50% and rarely comes on either.
it's set low just to keep the chill off.How have we gone from sorting out some condensation in a garage to making it a full blown heated room?
It’s a build up of moisture over time which has become trapped due to inadequate ventilation. Condensation is just an imbalance between moisture and ventilation. It’s normal for a bit of moisture to get in as long as it can get out again.
It’s a build up of moisture over time which has become trapped due to inadequate ventilation. Condensation is just an imbalance between moisture and ventilation. It’s normal for a bit of moisture to get in as long as it can get out again.
As others have said, insulate and seal the garage as best you can.
Then, I'd probably just put a vent + fan (like a bathroom extractor fan) somewhere unobtrusive to blow air from the house into the garage. Positive air pressure will then push any stale air out through whatever gaps you've missed when sealing. That way you're warming and dehumidifying (assuming your house isn't itself humid) the garage a little, and simultaneously ventilating both the house and garage
The one main flaw here is if your house is excessively humid... but you should be resolving that problem anyway
The second, smaller, possible flaw is that you're sapping heat from your house - but since you're wanting to heat/dehumidify the garage anyway, the tiny extra heating cost (using a cheap gas central heating system) is still probably cheaper than running an dehumidifier.
I'd disagree with that - condensation is more about insulation/temperature differential and rate of cooling than anything.
If your garage warms up in the day, then rapidly cools down, you're going to get condensation. That happens even in a perfectly ventilated area - it even happens outside, that's why your car and lawn get moisture/dew/ice on them at night
Ventilation can help (expell that warm air before it has a chance to condense on cold surfaces), but it isn't a magic bullet if your room is insufficiently insulated.
Then, I'd probably just put a vent + fan (like a bathroom extractor fan) somewhere unobtrusive to blow air from the house into the garage. Positive air pressure will then push any stale air out through whatever gaps you've missed when sealing. That way you're warming and dehumidifying (assuming your house isn't itself humid) the garage a little, and simultaneously ventilating both the house and garage
The one main flaw here is if your house is excessively humid... but you should be resolving that problem anyway
The second, smaller, possible flaw is that you're sapping heat from your house - but since you're wanting to heat/dehumidify the garage anyway, the tiny extra heating cost (using a cheap gas central heating system) is still probably cheaper than running an dehumidifier.
I'd disagree with that - condensation is more about insulation/temperature differential and rate of cooling than anything.
If your garage warms up in the day, then rapidly cools down, you're going to get condensation. That happens even in a perfectly ventilated area - it even happens outside, that's why your car and lawn get moisture/dew/ice on them at night
Ventilation can help (expell that warm air before it has a chance to condense on cold surfaces), but it isn't a magic bullet if your room is insufficiently insulated.