Boat house renovation benefits from A. Proctor Group membranes

A project to convert a former fishing bothy is taking advantage of the benefits of two different membrane products from the A Proctor Group: Facadeshield UV and Proctor Air. 

The former boat house has been bricked up for a decade but is now being renovated by David Gibson into a two-storey beach house. The existing boat house structure provided a tight footprint, being only 3.5m wide by 8m long. David took the existing walls down to around one metre in height, then began to erect the timber frame.  

Originally, he planned to use an open-jointed timber cladding as the finish above the retained brickwork. He therefore chose the A. Proctor Group’s Facadeshield UV membrane, which combines UV resistance, water resistance, and high vapour permeability. Designed specifically for open jointed cladding, Facadeshield UV is also dark in colour to provide a shadow effect in the open joints. Ultimately, David had to amend his timber cladding specification to a closed system. The boat house sits right on the boundary of his property, and fire safety regulations necessitated a change in approach. 

Nevertheless, Facadeshield UV still proved useful. The wall membrane was left exposed for three months before the timber cladding was completed in January 2025, but it has protected the OSB sheathing and timber frame well in that time. 

On the roof, David chose Proctor Air as an air permeable, low-resistance membrane for use below a traditional slate finish. The monopitch roof design made ventilation provision tricky, as David was specific in how he wanted to detail the ridge and keep it secure. Selecting Proctor Air removed any such concerns, as it provides a uniform flow of air that effectively ventilates the roof space and removes any risk of condensation. While not waterproof, Proctor Air has a W1 water resistance and can be left exposed to UV for up to three months. 

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