Manthorpe Building Products

Through Wall & Underflood Ventilation

Refurbishment Weep Vent

The G952 has been designed to provide retrospective ventilation to cavity walls where no or an insufficient amount of Weep Vents have been used.  In addition the G952 can be used to ventilate rendered wall where standard weep vents are notoriously difficult to detail.

The product is quick and easy to install and comes in a range of colours to suit all common brick and render finishes.
Further benefits of the product are that each unit is produced with louvred chevron grill which helps to protect against wind driven rain. The protruding drip feature on the front face of product directs moisture away from wall rather than down onto it which could lead to unsightly stains and damp patches. 

Product Benefits

  • 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

G952 Refurb Weep Vent in situ

Colour Variations 


Product Specifications

Product Code Description Free Airflow Material Size Length/Diameter Pack Qty
G952 Refurb Weep Vent 260mm² Polypropylene 80mm x 25mm dia. 50 per box