Weep vents
Weep vents are used to allow moisture to escape from cavity walls. They help prevent damp and water damage by providing airflow through the outer leaf of brickwork. Commonly installed at the base of cavity walls or above openings like windows and doors, weep hole vents are a standard feature in modern brickwork. Builders typically space them at regular intervals to maintain ventilation and allow drainage from the cavity or DPC level.
Historically, weep vents in brickwork took the form of open perp joints or small tubes inserted into the mortar bed. Today’s solutions - such as Timloc’s InvisiWeep vents - offer a less visible, more uniform appearance while reducing the risk of blockages. Modern brick weep vents are also designed to prevent insects from coming in, and stop debris build-up, making them more reliable over time. For best results, follow NHBC or local authority guidance on vent placement and spacing.
Check Buildbuddy for the best prices on weep vents.
12 results
ex
inc
Weep vents - FAQs
1. What are weep vents?
Weep vents are small openings that let moisture escape from cavity walls. They also allow air to circulate, helping to keep the wall dry.
2. How many weep vents do I need?
For standard installations, it’s common practice to place one vent every 450mm above openings or at the base of walls. It’s always best to follow building regs or the project spec, which will usually offer guidance.