Okay, so some of you may be aware we have a sheetrock repair/faux beam bedroom remodel in the works, which is bad enough. Closet interiors were the last thing on my mind though, until we got further into this job. As I was sanding the sheetrock next to one of the rarely used crawl space closets, I noticed a hearty gust of cold air. Upon closer inspection, I determined it was coming from the closet door, which naturally I opened… into what I can only describe as a wind tunnel. It’s no wonder our monthly utility bill causes us to break out in hives.
The air flow was strong enough that with some forgiving lighting and makeup thrown in, my flowing, blowing hair made me look as though I could have been on a professional photo shoot. I’d never paid much attention to it before; I knew the closet wasn’t finished, but didn’t realize it had no baseboards.
Even though it’s insulated, plenty of cold air is still coming through. Without the resources or time to finish off the closet interior, or to meticulously cut fiberglass insulation strips to be crammed into the cracks, our solution was Dow’s “Great Stuff” spray foam sealant.
And yes, this stuff is great (and green according to NAHB Research Center!). The pressurized, expandable foam seeps and fills small gaps and cracks for an air- and watertight seal. Once it hardens, you can easily cut away the excess with a utility knife. Unfinished areas can either be left alone, or covered with baseboard at any time in the future. The dried foam remains flexible, allowing it to expand/contract along with changing weather conditions.
Dow offers several types of spray sealant products, each with varying expansion levels and suitable for filling everything from small cracks to gaping holes. (We used soft and flexible for narrow cracks — technically its intended use is for windows/doors, but for the closet interior it worked very well.)
Some tips for usage:
- Be ready to use the whole can. Once you start spraying, you’ve gotta finish, otherwise the foam will dry onto and plug the nozzle, and the rest is useless.
- Don’t use the generic stuff because half of these products don’t work. I’ve found they often have inferior injection power. The air pressure dies and you’re done, left with half a can of foam you can’t use.
- If you’re working in a finished area, keep an open garbage bag with you while you move from one spot to the next to catch any overflow or drips, (which will probably be more like huge globs).
- If the foam does get away from you… LET IT SIT UNTIL IT’S COMPLETELY DRY! Do not try to wipe it up right away because it smears and leaves a huge mess. Once it does dry, it pulls/scrapes off easily and any clean up is minimal.
- Wear gloves. We never bother and are sorry for it every time. This stuff is beyond sticky.
Dow “Great Stuff” foam sealant and other Dow spray sealant products are available at home improvement stores and at Amazon starting at around $5.00.