Vindtæt

Vindtæt is a Danish adjective meaning wind-tight or windproof; it describes the ability of a material, garment, or construction to resist penetration by wind. The term is often contrasted with vandtæt (waterproof) and with terms for wind-permeable materials. The word combines vind (wind) and tæt (tight or sealed), and it is used across consumer products, architecture, and technical discussions about building envelopes and textiles.

In clothing and textiles, vindtæt materials are designed to reduce drafts and the chilling effect of wind. Vindtætte fabrics, membranes, and seam constructions help keep the wearer warmer in exposed conditions. The level of wind resistance is often balanced against other properties such as breathability and comfort. Clothing labeled vindtæt may be marketed as windproof or wind-resistant, depending on the degree of protection and the presence of sealed seams.

In construction and building technology, vindtæt refers to the integrity of the building envelope against air leakage. A vindtæt facade, window, or door minimizes drafts and helps improve energy efficiency. Achieving vindtætness involves proper design, appropriate sealing, and quality installation of joints, weatherstripping, and insulation. Air leakage rates are sometimes measured in tests such as blower-door tests, which assess the overall airtightness of a building.

Vindtæt can also appear in product labeling for outdoor gear and protective equipment, signaling suitability for windy conditions. However, winds alone do not determine overall weather protection; in many cases, windproofing is combined with water resistance or thermal insulation to provide comprehensive performance.

See also: vandtæt, lufttæthed, weatherproofing.