windproofing

Windproofing refers to measures that reduce the penetration of wind into an enclosure or object. It is used in building envelopes, clothing, and outdoor equipment to minimize drafts, improve comfort, and reduce energy loss. In buildings, windproofing focuses on reducing air leakage through joints, seams, and openings. Common approaches include sealing gaps around doors and windows, installing weatherstripping and door sweeps, caulking joints, and using tightly fitting window and door assemblies. Additional strategies include interior air barriers, exterior wind barriers on exposed facades, and careful detailing of roof and wall penetrations. Materials such as tapes, sealants, gaskets, and expanding foams are used to create continuous air barriers. Where feasible, high-performance glazing and well-constructed wall assemblies reduce both infiltration and convection losses. However, ventilation must be maintained to control moisture and indoor air quality.

In textiles and gear, windproofing relies on fabrics with low air permeability or windproof membranes and laminates that block air while allowing moisture to escape. Tight weaves, seam sealing, and snug fit further reduce drafts. For tents, outer shells and taped seams minimize drafts at openings, while ventilation ports are balanced to maintain comfort.

Testing and standards include air-leakage measurements using blower door tests and wind-load assessments for cladding and fabrics. Maintenance involves inspecting seals, replacing worn weatherstripping, reapplying sealants, and ensuring joints remain continuous. Windproofing is an important component of overall thermal performance but is not a substitute for adequate insulation and ventilation.