puhallustestiä

Puhallustestiä (also known as puff test or air test) is a method used to assess the tightness of a roof, wall, or other building envelope components. The test involves placing one's ear against the test surface while exhaling into it, and listening for sounds such as gurgling, bubbling, or hissing.

The principle behind the test is to detect the presence of air leaks or defects in the building envelope. When air is blown through the test surface, the sound produced will indicate whether there are openings or gaps in the structure. If no sound is heard, it is likely that the surface is airtight. On the other hand, if sounds are audible, it may indicate that there are air leaks or defects in the building envelope.

The puff test is often used as a simple and non-destructive method for builders, homeowners, and inspectors to evaluate the air tightness of buildings. It is commonly used for testing of new constructions, renovations, and retrofits. The test can be performed in various areas, such as around doors and windows, in wall cavities, and on roof surfaces.

It is worth noting that the puff test is not a definitive measure of a building's air tightness, and it should be used in conjunction with other methods, such as blower door tests, for a more comprehensive evaluation. Despite its limitations, the puff test remains a widely used and low-cost method for assessing building envelope tightness.