Most crawlspaces have moisture issues, according to any home inspection. There are two kinds of crawlspace configurations: vented and non-vented.
Crawlspaces with vents allow for cross ventilation, and the home’s subfloor, as well as the pipes in the crawlspace, are insulated to avoid freezing. In the winter, there is a vapour barrier on the ground and the vents are closed. In addition to pipe insulation, a tiny heater or heat tape may be utilised to assist prevent the pipes from freezing.
The foundation walls of non-vented crawlspaces are insulated, but the sub-floor is not. Throughout the year, the vents are insulated and a vapour barrier is installed on the ground. A dehumidifier is used to condition the air. It’s still possible to utilise a modest heater and pipe insulation.Learn more about them at installer
When there are insufficient or no rain gutters, problems emerge. Did you know that with a single inch of rain, the typical roof releases 1,000 gallons of water? Using sturdy rain gutter covers to cover the gutter hole will prevent water from flowing down the foundation and into your crawlspace. By curling under the cap, water is allowed to enter. Mesh and screen coverings, however, get clogged or collapse.
Do your downspouts run parallel to your foundation? They must allow water to flow at least 6 feet away from your house.
Is there a slope in your yard that leads to your foundation? Because water may cause severe foundation damage, it must be diverted away from the house.
When the weather becomes warmer, do you remember to open the vents? Your home must be able to breathe. Vents may be blocked by low decks and bushes, rendering them unusable. A minimum of 1 square foot of ventilation is required for every 150 square feet of crawlspace floor area in your house. Cross ventilation should be allowed by placing vents within 3 feet of the corners.
Is it possible to instal your insulation backwards? It’s possible that the flooring has insulation. The paper side of the fibreglass insulation should be put against the sub flooring and towards the heated living area. Otherwise, moisture will be trapped between the subfloor and the paper, causing moisture damage to be hidden. Insulation is not required in a well constructed non-vented crawlspace.
Is your vapour (moisture) barrier broken or loose? On the ground of your crawlspace, a 6 mil thick poly vapour barrier should be overlapped and sealed around columns and walls. This prevents moisture vapours from rising into your frame from the ground.
Make sure your sump pump is located at the lowest place in your crawlspace if you have one. It should be readily accessible from all locations. Regularly inspect your pump. Does it operate on its own? It should be housed in a ground-level plastic cylinder that ejects water away from the structure and not into the septic or sewage system.
If your crawlspace isn’t ventilated, you’ll need a dehumidifier, which should be connected to a sump pump or condensate pump. You’ll have to dump water every day if you don’t do this, and who wants to do that? In addition, get a dehumidifier with an adjustable, automated setting so that it does not run continuously.