Lift Pit & Stairwell Waterproofing – Portmarnock


This is an exclusive development of apartments constructed by Andrews Construction Ltd.

SURFASOLOGY were tasked with providing a Grade 2 Environment for the plant room and stair core areas.

The BDA approved DualProof T Membrane was installed under the reinforced concrete base slab to provide a Type A Barrier Protection to the footprint of the plant room and the stair core areas.

The construction joints in the reinforced concrete were detailed using CEMflex VB Plate installed by DJ Steel Fixing. This patented steel plate water-bar system acts as both an active and a passive barrier, the plate itself provides a physical barrier whilst the special coating on the plate reacts with moisture to seal cracks and prevent water ingress.

The exterior wall of the plant room was coated with Maxseal Flex. This two-component, flexible waterproof coating was used to provide a Type A Barrier Protection to the wall and to provide continuity of the waterproofing system. 


Type of Job Lift Pit & Stairwell Waterproofing
Products DualProof T, DualProof MS Polymer Adhesive, Velosit WP 121 Rapid, CEMswell, Maxrite 500
Main Contractors 


Andrews Construction Ltd. 


Location Portmarnock, Co. Dublin
Construction Completion 2019 – 2020

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