08:32AM | 03/31/05
Member Since: 03/30/05
4 lifetime posts
Can anyone give me some advice on whether or not a vapor barrier is necessary when waterproofing a crawl space? I've had two waterproofing companies (and two more to go)give me an estimate. Both suggest the pipe & tile method w/ a sump pump to pump out water. However, one contractor also suggests a vapor barrier and the other doesn't. The one who doesn't says that you will always have condensation (ie moisture) in the crawlspace even if there is a vapor barrier, so it is not necessary as long as the system is working and keeping the water from standing. I'd like to say no to the vapor barrier to save money, but I don't want to cut a corner that will hurt me in the long run. Any help would be appreciated!


11:04AM | 03/31/05
Member Since: 06/23/04
164 lifetime posts
Mold and mildew need three things to survive - a food source, water, and proper temperature. The food can be any organic material. The water can be any type with humid air being the best. Temperature is best when between cool and cold. Enemies of mold and mildew are high temperatures, sunlight, and dry air.

If you have water in the crawlspace, the best solution is to stop it from entering in the first place. That is the only way for the soil to dry out and prevent other problems such as rotting, mold, mildew, etc. Often, this solution is not inexpensive. You don't need a vapor barrier if you can keep the crawlspace dry.

As a last resort, collect and pipe the water away. Keep in mind that the crawlspace will remain damp and create opportunities for mold and mildew growth. A vapor barrier can be helpful here in that it will retard the evaporation rate of moisture from the soil and keep the air more dry . However, the vapor barrier has a two edged sword. It also creates surfaces with high moisture concentrations between the plastic and the ground that can be a breeding ground for mold and mildew.

Crawlspaces should always be ventilated to help remove moisture. This is true even in the winter. Don't block your vents in winter.




Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

Deep blue grays like the shade shown in this example "have a nautical, serene feeling," says Amy Hendel, designer for Hend... Built on a rocky island in the Drina River, near the town of Bajina Basta, Serbia, this wooden house was cobbled together ... Large steel-framed windows flood the interior of this remodeled Michigan barn with daylight. The owners hired Northworks A... Edging formed with upside-down wine bottles is a refreshing change. Cleverly and artistically involving recycled materials... A Washington State couple called on BC&J Architects to transform their 400-square-foot boathouse into a hub for family bea... Similar to the elevated utensil concept, hanging your pots and pans from a ceiling-mounted rack keeps them nearby and easy... Few projects are more fun than upcycling a vintage piece in a surprising way. Outfitted with a sink and a delicately tiled... The thyme growing between these stepping stones adds a heady fragrance to strolls along this lush, low-maintenance garden ... Decoupage is an easy way to add any paper design to your switch plate, whether it is wallpaper, scrapbook paper, book page... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Reluctant to throw away any of those unidentified keys in your junk drawer? Hang them from a few chains attached to a simp... A stripped-down model, sans screened porch, starts out at $79,000. Add the porch, a heated floor for the bath, and all the... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon