Platon membranes go above ground to waterproof ancient priory conversion

Isola Platon membranes have been used in the refurbishment of ancient priory outbuildings on a site classified as a Scheduled Ancient Monument.

St. Thomas’ Priory is a unique conversion development of five sensitively restored barn conversions . Triton approved remedial contractors, Rudders & Paynes installed a Platon cavity drain membrane system to the walls and floors of each barn conversion.

Normally installed to provide below ground structural waterproofing, the Platon membranes were specified as an alternative to traditional chemical injection damp proofing systems because building regulations prohibited the drilling into any of the original stone walls.

In one of the Priory buildings, where only one end wall was below ground level, the floor of each unit had been laid to a fall, and Triton Aqua Channel perimeter drainage was installed along the front edge of the slabs to collect any water from behind or under the membranes and direct it to a suitable drainage point. In other units where all walls and floors were partially below ground level, the Triton Aqua Channel was fitted to the entire perimeter.

The cavity membrane system, comprising Platon Multi to the walls and deeper studded Platon P20 to the floors, was then installed using Platon Corner Strip to seal the wall/floor junction. Platon Multi and Platon P20 combine to form a BBA certified system commonly installed as a method of below ground structural waterproofing.

A key benefit of cavity drain membranes (particularly when compared to cementitious tanking systems) is that there is little or no preparation required to the substrate. This is particularly important when the building is of historic interest as the original fabric of the building can remain unaltered.

At the St. Thomas’ Priory site, following the installation of the Platon cavity membrane system, the walls were dry lined and insulated and a concrete screed applied to the floors.