Attic problem

Old 12-27-19, 12:22 PM
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Attic problem

We have issues with our 950 square-foot home too much moisture accumulating underneath our roof in the attic. We were told we had to much Ventilation going into our attic why isnít our attic breathing properly? This is a 4/12 pitch roof. We have 4 roof vents, 2 gable end vents and 4 soffit vents. Do I need more soffit vents? Or more roof and soffit vents?


Last edited by Jeremym; 12-27-19 at 12:27 PM. Reason: Wording
Old 12-27-19, 12:40 PM
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Not the ventilation guy but we need more info, Where are you. What part of country? Type of insulation and how much.
Old 12-27-19, 12:57 PM
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Also do you have anything venting into the attic?

Are there insulation stops at the soffit vents?

Does the ceiling have a vapor barrier?
Old 12-27-19, 02:44 PM
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I'll post so when you reply I'll get a notice. We can resolve all of your attic moisture issues, many here are very good at this topic.

Pictures will always help and that location pugsl asked for, any close city will do.

Old 12-27-19, 03:47 PM
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We were told we had to much Ventilation going into our attic
Who told you this, rarely a problem of too much, mostly a problem of too little.

What was their solution!
Old 12-28-19, 12:55 AM
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Live in Ontario Canada. Temperature drops to -37 celcius and well over that with wind chill. Snow gets 3 to 4 feet deep on roofs around here too. In the summer it can get to +35 Celsius. Roof does have vapour barrier, it is very thin stuff tho. Not the plastic you use now a days thatís for sure. Insulation is fiber glass batt and which looks like stiff pieces of fiber glass. Soffit is not horizontal to the ground. The plywood is nailed to the underside of rafters. So itís Has same pitch as the roof. Each side of the house has 2 vents each. Also in between rafters on the top plate there are pieces of wood (2X3).

i will be putting on new shingles in the spring. I was going to add 3 more soffit vents per side and 25 to 30 feet of vented ridge cap. Or should I just add a couple whirly birds? When shingles are off I want to pull up some of the ship lap and add more insulation right up to top plate. Itís impossible to add in attic, no room to get that close.

I was up in the attic last year and did not see any signs of rot or discoloured wood on roof structure.

i canít post picture through phone fir some reason


Last edited by Jeremym; 12-28-19 at 02:18 AM. Reason: Re wording
Old 12-28-19, 01:05 AM
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It can be a problem loading pictures from a phone....... How-to-insert-pictures.
Old 12-28-19, 07:34 AM
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I would strongly suggest you edit your profile to show roughly where you live.
Not having it shown assumes we are clairvoyant!

You definately need gable and/or ridge vents but you need the air to come from the lower part of the attic to encourage air flow.
You need continuous soffit venting and insulation stops to get good flow.

Within reason you can not have too much air change in your attic because it needs to be the same temperature as outside.

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