Description
- REFURB WEEP VENT Designed to provide retrospective ventilation to cavity walls where no or an insufficient amount of weep vents have been used
- Can also be used to ventilate rendered wall where standard weep vents are notoriously difficult to detail
- Installed in a 25mm diameter drilled hole
- Provides 260mm² ventilation airflow per unit
- Louvred chevron grill to help protect against wind driven rain & insect ingress
- The external flange covers any damage to the substrate caused by the drilling
- Drip rib ensures clean moisture run off
- Tube ribs ensure easy lead in to the hole and help retain the vent in position
- Regulations – BS 5250:2011 Control of Condensation in Building, Building Regulations 2000: 5.5, Scottish Building Regulations 2007: 3.10.6, NHBC Standards 6.1 D6 and NHBC Standards 6.2 D4
- Size 80mm x 25mm diameter
- Also available in terracotta and clear
Installation:
1. Mark out the locations for the vents and drill a 25mm diameter hole through the
external leaf of the wall into the cavity at a slight upwards angle at these points.
2. Ensure the hole is clear and free of debris before proceeding.
3. Align the tube with the hole, making sure to have the chevrons of the front grill
pointing upward and the flat edge of the drip feature horizontal, running parallel
with the run of the wall.
4. Push the vent firmly into the hole using the palm of your hand until the back face
of the flange sits flush against the substrate.
5. As the ribs along the length of the tube grip to hold the product in position it may
require more force to push the vent into the hole – it is acceptable to gently tap the
vent into position using a rubber mallet.
6. The vents can be positioned at high or low level to suit the required detail, and
should be placed at both high and low level to achieve a cross flow ventilated
cavity if required.
7. NHBC Standards 2008—650mm2 free airflow every 1.2m—space at 480mm centres.
8. Scottish Building Regs 2007—300mm2 free airflow every 1.2m-space at 1m centres
