Crawl Space Ventilation – Ventilation Classification
The home inspector does not want to see the ventilation openings below the ground with the mapping space not necessarily mapped (usually covered with plastic goggles and open ground vent vents). If the ventilation slots are lower, rain and drainage will probably enter the crawl site – which can cause wood destroying organisms or cause fungus such as rot or mold.
If the vent holes are far enough out of the classroom, block the openings so that the air does not circulate. Ventilation holes do not breathe! When home inspectors see this condition when the ventilation opening can not be fixed for removal or classification of soil, the inspector is likely to recommend that the customer insert ventilation slots. The simplest ventilation openings consist of frames made of pressed wood. However, specially designed metal or plastic ventilation slots can be installed in the building business. The well was dug into the ground, before and below the vent, and more deeply than the vent, so there is an opening before and during the ventilation opening. Personally, I would like to see that the well dug a few inches deeper than the vent hole, and the space filled with the mining stone is approx. 2 ° below the air vents.
Another issue is often blocking ventilation openings in an unconditional mapping space Although this may be verified in winter when dangerous to high-temperature pipes is dangerous, blocked openings in the state of Washington are set at an uncontested crevice site, according to the Washington State Department of Agriculture the attraction of wood destroying organisms. In most cases, the Structural Pest Control will have to support ventilators blocked on the site. In the northwestern Pacific, when the pipes are packed, the foundation ventilation openings can be left open every year of the year. partly heated or "conditioned" sliding locations