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Old 01-08-2010, 11:55 AM   #1
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Insulaion over brick veneer ? Any suggestions?


We have a brick veneer home which is kind of exposed to extreme wind conditions and moisture from the Bay - the wind blows for about 200 miles over the open water on this wall which has in my eyes bad thermal properties and the brick absorbs a high amount of moisture even after 4 sealer coats applied on it in Summer.
During last years Hurricane the moisture in the wall raised to the point that the whole wall was conductive. Even if a Hurricane is only happening on a 5 year average the winter North storms are kind of regular and freezing.
Has anyone a proven suggestion on how to reduce moisture intrusion / temp insulation on a brick veneer wall?
Thanks for sharing any thoughts Michael

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Old 01-08-2010, 04:36 PM   #2
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Insulaion over brick veneer ? Any suggestions?


Brick walls take in and evaporate out water all the time with no issues. I'm not sure what you mean by, "the whole wall was conductive". Do you get water intrusion into the house? There should be a gap behind the brick of an inch or so to keep the water away from the tarpaper covered sheathing. Any water getting behind the brick should trickle down to weep holes on top of the foundation.
Has this moisture damaged the brick fascade?
Any photos?
Ron

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Old 01-08-2010, 05:07 PM   #3
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Insulaion over brick veneer ? Any suggestions?


3 sides of the building do fine as they are exposed to average conditions. One side ( facing north ) appears like it is "take in and evaporate to the inside" .
There is a small gap - unfortunately the excess plaster was sometimes just pushed behind the brick crossing/closing that gap - weep ho;es are missing through out. We have outlets on both sides of the window - during the Hurricane you got electrocuted touching the window board. Still these were100 to 120 miles wind for 6 hours straight on that wall with heavy rain - and yes we get water intrusion - it runs out of the base boards.
Average wind speed in a North storm is only around 70 miles which does less harm. We thought first to apply insulation foam and Dryfit on top of that - but it appears that that would not help either ...
Fiberglass over the foam?
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Old 01-08-2010, 05:18 PM   #4
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Insulaion over brick veneer ? Any suggestions?


There is nothing you can put on the brick, insulation wise that will be there after the next hurricane. Are there gaps or cracks in the mortar? Gaps around the windows? Wind driven rain can get in hairline cracks. If you don't think you can seal the cracks, I would remove the brick wall, install a new waterproof cover to the sheathing and reinstall the brick with the correct drainage channels and seal all the window perimeters.
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Old 01-08-2010, 05:58 PM   #5
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Insulaion over brick veneer ? Any suggestions?


The brick brick is deep enough to hold anchor and bolts to build a secondary frame on top - fill with foam and ... well example fiberglass the foam ...
Just not sure how far it will create problems with moisture in the wall or rodents???
Yes there are enough gaps in the mortar to strain your spaghetti if you take a closer look - the big ones we filled with caulking - before applying 4 coats of sealer - it reduced the water but did not stop it -
The windows are not the problem as we replaced them with 3/4" teak windows and 1/4 safety glass and Louvers on the exterior.
Problem is the brick.
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