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What is cause of bedroom condensation?

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Posted by: from Brampton
10/1/2015 at 6:36:15 PM

On second floor, in one of my bedroom there is condensation on two corners which happens in winter only. This bedroom is right above the garage and on the exterior side of this corners small roofing above garage starts. This corners are where the drywall touches floor (right above the baseboard). There is no plumbing lines nearby or beneath drywall. It frosts in winter. I checked in the attic but everything is fine and also this condensation is near the second floor. This house is 8 years old and the issue started only last year.

Can it be due to snow on the roof on the exterior side?

Please help!

REPLIES (2)
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Date/Time10/1/2015 at 11:03:00 PM

Hi Ash,

If it is only a year old then something has changed the environment in that bedroom. The fact that there is snow on the roof is actually good because it proves that you have insulation and it is working. If it was missing or settled the snow would be melting.

My guess would be that you have done something to change the air circulation pattern as it is not getting to the corners. If you can find a way to make sure the warm air circulates into the corners, that should solve the problem.

Good luck with it.

Jim Kuzma

Kettleby Handyman

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Date/Time10/5/2015 at 10:03:32 AM

Hey Ash,

I read your question. Sounds like you might be regretting winters. Lol.

Not to worry Ash. For every problem, there s a solution.

If I m understanding you correctly, your having moisture appear at lower corners of drywall at floor level. If this room is in fact above garage, garages are typically, un-insulated and may have a perpherated sophit system at fascia which may be allowing air intake at sophit and/or cold garage that is allowing for cold air to meet hot air.

It s very important to understand what happens when cold meets hot. Instant ice and freezing conditions. An outside intake of cold air would create a freezing affect(create ice) when met by a interior heat source. A vapour barrier system that has not been tuct taped properly would allow for moisture to appear when freezing temperatures rise which allow for conditions needed for thaw. Once it thaws, moisture appears.

Assuming that's the issue, you may want to, at a minimum, ensure that there s no intake at all at that sophit(if there is one), also, open up drywall 1 foot from floor(entire wet area across floor) and remove drywall. Locate vapour barrier joint(floor application-vertical interior wall) and remove existing tuct tape and replace. Ensure air tight application. If vapour barrier is taped at floor level, you would have to remove baseboard and flooring at that location to re-tape joint. This will automatically eliminate moisture. A complete and functioning vapour barrier system is monumental to home care and weather conditions control.

You need all the factors to find a solution. I would highly recommend you seek professional advice from a local roofing service provider and weigh out your options. An on-site assessment of your currant on-going issue would be your best bet.

Good luck Sir.

Frank Gillis-Right choice roofing and repairs.

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