Crawl space maintenance is like going to the dentist. With a few simple and relatively easy maintenance steps you can keep the underside of your home from needing a root canal.
One very poplar issue I find is wood debris. When a home is built some of the wood framing or sheathing members will need some adjustment. Holes are bored, notches are cut and ends are scrapped to allow wires, pipes and pieces to fit. All of this adjustment adds up to a lot of wood scraps. If a contractor, make that human, can pass the clean-up buck they will. Eventually the wood that should-have-been cleaned up will get covered up, never to be seen again…..
Enter wood destroying organisms. (Termites, beetles, carpenter ants and fungal rot) These critters are opportunists. Most of the time wood destroying organisms will need relatively moist wood. If they can’t find an easy meal they go elsewhere.
All of those wood scraps that are in contact or close to the moist ground are a perfect snack. Once all of that wood is consumed the hungry critters will start to look for their next meal. Mm mm wood.
I know the termites will be disappointed that I suggested the removal of their boxed lunch. The contractor was very kind to think of the wood eating critter’s busy schedule. The box of cellulose is the perfect thing for the modern WDO’s hectic lifestyle.
Ah mold. It is such a hot button. I know just by putting the word MOLD into my title this post will get attention.
People are interested, but I am still surprised at the lack of knowledge or the inaccuracy of knowledge (even you agents who need to know the basics).
This is not intended to be a general knowledge post. (go here for that) This is a heads up for everyone on the issues concerning acurrently accepted means of exhausting bathroom vents. It is acceptable, by International building codes to duct bathroom vents to an attic vent (any vent). This is usually a good thing and definitely better than venting directly into the attic. Recently I came across a very new home (only four years old) that had some mold growth in the attic. Not really a huge amount, however mold spores are microscopic and you cannot determine if it is affecting Indoor Air Quality without getting a lab involved. With closer investigation it could be noted the exhaust fan for the shower and toilet area was ducted to the nearby soffit vent. This is currently acceptable by building standanrds however in this case it was the root of the issue.
The way an attic vent system works is like a chimney, as the roof heats cool air is pulled into the soffit vents and hot air is exhausted out the ridge vents. So as the diligent home owners ran their exhaust fans during the steamy shower all of the warm steam was pointed at an intake vent!! All the moisture exhausted toward the vent and promptly turned around and was able to condense on the cool attic surfaces as the soffit vent did its job.
Here is a photo that just reminded me of Charles. I just thought he would get a kick out of how this particular can had taken on a life of its own. This can of extruded foam was in the crawlspace of a home that, “had been totally remodeled (re-muddled).” Spray foam seams to fill that gap between lack of knowledge and big holes in things. Merry Christmas Charles.