Greengates Builders Merchants

Type W Weep Vent


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Use: Dual-purpose perp weepvent.

Information: DPCs, lintel and cavity tray installations require weeps to discharge collected water from the building fabric. Ventilating of wall cavities, and enveloped construction is also necessary to avoid interstitial condensation. Type W Caviweeps/­Cavivents ensure water is removed from the building whilst also encouraging the wall to breathe. Being dual-functioned, the Type W takes advantage of the pressure differentials which exist in and out of the cavity. This aids evacuation of cavity humid air. The NHBC standards (4.4c.111) advise that the cavity below DPC level and at eaves and verge level should be ventilated. This requirement is fulfilled using Type W weepvents.

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Area Covered

Deliveries can be made throughout most of Lancashire, approximately 20 miles radius from our depot at Accrington, Lancashire.

Other locations may also be arranged for direct loads from our suppliers e.g. full loads of bricks or blocks.

Vehicle Types

We operate 3 crane offload vehicles:

  • Our smallest vehicle can carry approx 5 ton.
  • Our middle sized vehicle can carry approx 7.0 ton and has a tipping facility for loose sand and aggregates.
  • Our largest vehicle can carry approx 8.0 ton and also has a tipper facility.


Pricing will vary depending on the goods required and distance travelled.

We can offer very competitive rates for delivery — please contact us for more details.