Sentences with phrase «of air leakage»

Since green buildings usually have very low levels of air leakage, mechanical ventilation is usually essential.

This allows for much more precise flow calibration and reduces the chances of air leakage.

That's because in Passive House design, every jog and bump adds surface area and can be a thermal bridge or a source of air leakage, so Passive House buildings want to be boxy.

Alan Clarke says: «We had the issue of cavity walls in parts, where there was a risk of air leakage via the cavity, since the air barrier line steps from outside above ground to the new floor slab below ground, so we used expanding foam cavity fill to address this.»

Sophisticated equipment is required to measure the rate of air leakage but not to simply find the leaks.

Air changes per hour (ACH) is a measure of the air leakage of a building, calculated using a blower door at a standard pressure difference of 50 pascals (a unit of pressure) between inside the home and outside.

Both types of air leakage condensation damage will be worse when the exterior temperature is low (almost always at night when the sun provides little solar heating to the roof), the interior humidity is high, and the interior air pressure is higher than exterior (caused by a combination of wind forces, thermal buoyancy, and mechanical equipment pressurization).

Durability Summary: The primary durability risks associated with these wall assemblies involve moisture damage related to rain water penetration or condensation (most likely the result of air leakage, but also potentially the result of vapor diffusion).

The 1600 square foot house is built from a modified stock plan, and designed to Passivhaus standards, which severely limit the amount of energy that can be consumed and the amount of air leakage permitted.

In general, green builders strive for low levels of air leakage through their thermal envelopes, and high levels of insulation.

The third project throwing a wrench in the ever - weakening argument is the über - compact NewenHouse in Viroqua, Wisconsin (7,795 HDDs), with Carly Coulson as the certified Passive HouseA residential building construction standard requiring very low levels of air leakage, very high levels of insulation, and windows with a very low U-factor.