We see a lot of dry rot. Window and siding tend to accumulate dry rot when exposed to water. Fortunately for exterior envelope structures, siding, trim, and windows need to be painted every few years; this means structure inspections as you can’t (or rather shouldn’t) paint over damaged siding. Crawl spaces, unfortunately, don’t get a revamp every few years. It’s not uncommon for us to hear from our customers that they haven’t done a crawl space inspection in over 10 years!
What structures are vulnerable to crawl space dry rot?
Sill plates, the wooden structure sitting directly upon your foundation, are likely to rot due to moisture wicking upwards from the foundation wall. Modern construction best practice dictates that treated wood be used for sill plates, we often see houses where untreated wood was used. Dry rot on your sill plates can lead to dry rot extending into your floor joists, band boards, and beams! At SFW Construction, we have the ability to erect temporary shoring and repair or replace sill plates as necessary.
Floor joists, which sit upon sill plates and support the subflooring above, rot from either excessive water vapor content, a water intrusion above, or wicking from the sill plate below. Floor joists are responsible for holding up flooring, so dry rot compromised joists can lead to safety hazards. Active dry rot will move water upward into flooring and sub flooding, exasperating the problems if not addressed in a timely manner.
Rim Joists or band boards are likely to accumulate dry rot because of the surface area they have exposed to the exterior walls. As with floor joists, band boards are susceptible to wicking because of their surface area contact with sill plates. Depending on the extensiveness of the dry rot, it may be easier to replace rim joists from the outside!
Subflooding, which lays upon floor joists to create a suitable base for flooring, can also decay from air with extreme water vapor content cycling up through your home. More often than not, rotten subflooring is due to leaking plumbing or an external envelope leak in your siding or roof. At SFW Construction, we can address all of your crawlspace dry rot challenges.
Whether you’ve already established that you have a dry rot issue or you’re just too afraid to go into your crawlspace after years of neglect, we can help! Contact us now to get started.