When warm air from inside the house escapes traveling up through the bypasses the moisture condenses on the roof boards and rafters where the frost can form.
Frost in attic ottawa.
The straight forward answer is that a little frost seen in a canadian attic in the dead of winter is nothing to panic about.
Frost will form therefore on the underside of the deck.
Lack of intake ventilation can cause serious condensation problems which will eventually rot the wooden roofdeck making your roof structurally unsafe.
Frost in the attic water infiltration that could damage your ceiling accelerated degradation of materials moreover the national building code requires adequate attic ventilation.
Sticking my head into hundreds of attics every year i see lots where.
Inspect your attic and look for signs of improper ventilation such as black wood from years of moisture buildup or frost visible on the underside of the roof deck.
Frost build up in your attic.
Earlier this winter i heard a faint drip drip sound coming from the attic of my 17 year old bungalow.
A very wet summer season followed by an early deep freeze that lasted over three weeks has caught some of our homes by surprise.
Attic frost condensation q.
Cold air in the attic is not effective in removing condensation because of its low moisture storage capacity.
We are noticing excessive frost build up in attics on the underside of the roof sheathing.
It is usually the result of improperly vented bath fans or dryers that terminate into the attic or living space improperly adjusted humidistats on a furnace water problems in a crawlspace or basement the use of an unvented propane gas or kerosene combustion heater or fireplace excess cooking and bathing etc.
It looks like the roof is leaking but it s really the melting of a winter s worth of frost in the attic.
High humidity is likely to blame along with the excessive cold weather.
During winter conditions attic frost is a problem associated with attic bypasses.
Ceiling water leaks are one of the classic signs of air leakage into the attic.