Sub floor spaces create an excellent deal of water and air flow through your house most of the moisture is discharged in the subfloor ground, up to 04 liters per day for every meter square of land, this may be higher in the winter months. Not having poor ventilation and removing this witness may lead to damage of the building construction even as far away as the roof void, this may also be causing ill health to the occupants from dust mites and mould.
Water can be discharged into the sub floor from various sources, blocked gutters and downpipes, rainwater not being cleared far enough away from your building, putrid water drains, blocked drains, traps and burst water mains. Badly emptied surface water, particularly on poorly drained earth, causing water to pond and stagnate in the sub-floor space. That is where proper ventilation comes in, a well-ventilated place will help remove moisture in the subfloor, with minimum ventilation you may have a build-up of moisture, your building materials will absorb moisture in the atmosphere the quantity determined by the humidity, if the humidity is enabled to increase to 100% for long intervals it could bring the lumber moisture content to 30% saturation point where lumber or even properly treated will begin to break down due to fungal attack, the exception being H32 treated lumber most other treatments may break down in as little as 6 months or as long as 10 to 20 years if the witness hasn’t been removed. This may be seen as water droplets like hanger’s, nails and wires on alloy fittings when the temp drops and wetness reaches dew point it can condense and will slowly break down these fittings.
Fungal development can be supported by all this wetness, lead to rot and insect infestation. The sub floor is frequently known as the engine room of a building circulating air and moisture through your buildings pit and roof space, it’s estimated that up to 50%of the atmosphere we breath may be coming in the sub floor, this may be stuffed with wetness considerably more than you’ll expect to find from any escapes, this difficulty may show up as excessive condensation on windows, largely in winter.
This really is where proper ventilation comes in removing moisture from your subfloor, up to 5 air changes an hour are required to keep the sub floor aired out, in more acute instances notably badly vented low-lying areas you may have to add sheathing of the very least of 025mm thick, this needs to be fitted correctly, turned up at the sides and recorded with joints lapped no less than 75mm. You may even must contemplate field drains around the outdoor walls to discontinue water getting entrance into the sub-floor space.
This all will help reach your supplement which drier and healthier destination for a live, you may even discover that at some stage you might have rid your house of some of the disagreeable odors in your house.