The G952 Refurbishment Weep Vent is designed to provide cavity wall ventilation to existing walls to solve the problem of missing or inadequate ventilation. It is particularly useful in rendered wall constructions where it is notoriously difficult to use traditional built in weep vents. Quick and easy to install, the Refurbishment Weep Vent is available in a variety of colours to suit most common brick, stone and render finishes. Features Installed in a 25mm diameter drilled hole. 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. Preparation 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 upward angle at these points. Ensure that the hole is clear and free of debris before proceeding Installation 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. 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. 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. Requirements 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 venitilated cavity if required.