Liquid Window Flashing???

LennyV-NHSNOLA

I just put two replacement windows in a 50 year old brick veneer wall at the Fountain Court Condo's in Metairie, Louisiana. These brick veneer walls were built "poorly" and not maintained or sealed over the years so there is plenty of water infiltration. Further, the bottom 2-3 layers of airspace is filled up with excess mortar drippings from the building process. In short, these walls do not breathe very well or evaporate the rain water that gets into them very well. Their was no flashing around the originally installed windows and the wood casing trim around the outside of the vapor barrier is very soft to rotting out in many areas. Because of the brick veneer wall with only a 2" airspace, there is no way to to replace this wood casing trim or properly install flashing around the replacement window.

Is there a spray on type product that I can spray onto the vapor barrier that will drip down onto the old wood trim and installed window that will create a type of flashing to stop rain from further rotting this wood trim and to stop an seapage into the window at the top? I'm guessing some type of tar based product that would would create a membrane type flashing.

The condo assn says they are going to seal all of the external walls of these buildings but it's going to be an expensive job and historically they never do them.... They just tell people they are going to to shut them up till they forget about it.

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Bob Kovacs

There are spray-on liquid air/water barriers like Grace Procor, but they're normally used as an all-over application prior to the brick veneer. I've never seen them used in an application lke you mention, and the hard part is they're usually sold in large drums for application by commercial installers- you may not be able to get them in small quantities.

Bob

LennyV-NHSNOLA

Yeah... I've been doing lots of Googling and have come up with that same dilemma. It seems like Great Stuff should come up with a product like this. Kind of like their products, but something that doesnt expand... just forms a water resistant membrane when it cures but is liquid enough to fill in the cracks and crevices.

I'm going to keep looking. I remember my dad built a plywood camper top on an old Ford pickup truck and he was able to buy a gallon of some kind of elastomeric sealer that he rolled on the top and sides of the plywood and it worked. It formed like a semi-rubbery surface after it cured.

Of course, I'd like it in sprayable form... preferably a disposable can that I can trash after this single job.

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A.W.Davis

http://www.amesresearch.com/roof_coatings.htm#eb

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LennyV-NHSNOLA

Thanks a million. I knew a product had to exist. The above roofing product, which is probably the "best" option, comes in the smallest size of 5G but I looked over their site and found the Block & Wall product in a 1G size and it looks nearly identical but not quite as good as the roofing product.

I have a gutted 3BR unit in this same condo complex that has a water penetration issue through the vapor barrier. I might just get the 5G and spray down the inside of this vapor barrier as an extra layer of protection.

Once again...

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