The Type W Weep Vent is a specialized dual-function building component designed for masonry and cavity wall construction to safeguard structures against dampness, interstitial condensation, and water damage. Acting simultaneously as a drainage outlet for moisture collected above lintels and damp-proof courses, this vent ensures that trapped water is safely evacuated to the exterior. Additionally, it provides essential airflow to the wall cavity, helping to reduce humidity and prevent structural degradation over time.
 
Constructed from durable, high-impact polypropylene, the vent is engineered to withstand severe weathering, UV degradation, and environmental aging while maintaining long-term structural integrity. It is typically designed with compact dimensions to fit seamlessly into standard perpendicular mortar joints without compromising brickwork strength. Integrated features such as an insect-resistant front grille and internal baffling work together to prevent pests from entering the cavity while deflecting wind-driven rain from blowing inward.
 
Widely utilized in brickwork, blockwork, and timber-frame construction, weep vents are installed at regular intervals along base courses and above openings to meet building regulations for ventilation and drainage. By balancing moisture control and air circulation, this reliable component prevents timber rot, masonry staining, and indoor dampness. Whether specified for residential developments or commercial projects, the Type W Weep Vent delivers professional-grade protection for healthy building envelopes.
 
Has a baffled grill to help reduce the ingress of driving rain
Provides 220mm2 ventilation airflow
Can be slotted between two bricks and mortared into position. It provides an unobtrusive ventilation point for the cavity behind
The grille is sized to keep out large insects but is wide enough that it will not be blocked by debris, paint or water droplets
Replaces a single mortar joint