Wonder if anyone can help with this please we recently had a number of garage flat roofs replaced with I think the correct term is GRP (fibreglass roofing) and since then we have a serious increase in dampness and condensation in the garages which was never a problem until we had the roof done. The old construction was felt and pebbles. Any thoughts and advise on how to cure this problem please.
GRP Garage Roof and Condensation
- Thread starter Boxerkid
- Start date
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You need to introduce some additional ventilation, either some air bricks in the walls or at the eaves.
The roofs should have been cross flow vented during installation.
As they wasn't cross vented i agree with freddy and the brick vents.
To vent it properly you need the vents to be at both the back of the garages and at the front! It is no use just putting one or two vents
at one end because you won't create a flow of air through the garage.
Ventilation acts as a vacuum, pulling air in one end and out of the other
end!
You will be getting condensation also because when you park a car
in a garage whilst the engine is still warm the heat from the engine
hits the underside of the cold plywood and condenses.
This is why you should ventilate a garage!!
Hope this was of help.
Cheers RoofDry
As they wasn't cross vented i agree with freddy and the brick vents.
To vent it properly you need the vents to be at both the back of the garages and at the front! It is no use just putting one or two vents
at one end because you won't create a flow of air through the garage.
Ventilation acts as a vacuum, pulling air in one end and out of the other
end!
You will be getting condensation also because when you park a car
in a garage whilst the engine is still warm the heat from the engine
hits the underside of the cold plywood and condenses.
This is why you should ventilate a garage!!
Hope this was of help.
Cheers RoofDry
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