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Re: Heavy frost in the Attic
Hi Everyone,
I need your help! I have just discovered massive frost in my attic. RH in the home is around 28-40% depending on the day (with occasional spikes to 50) at a temperature of approx. 70 to 77 degrees C. This is a townhome/condo end unit. Insulation is fiberglass pink and there appears to be a vapour barrier beneath.
You can see from the photos the frost is thick throughout the roof area.
My questions are as follows - what should I do about the frost there now? It's going to melt and then what?
What is causing it? Looking around the attic I can see the bathroom vent goes out through the roof. The furnace (natural gas) and hot water tank share the another vent out the roof. I can see a rectangular hole in the roof that may lead to a vent but an unable to see light there. There is soffitt around the outside of the roof (I will check to see if it's blocked). There is a reverse flow furnace in the house(hot air leaves via the bottom) with the cold air runs above it and a vent that seems to pull air from the attic into the run (is this normal?).
What should be my first step in this?
Thanks,
Gerry