A new build domestic basement in the Northampton area has been supported with the installation of an external waterproofing system.

ProTen Services was invited by a local architect to submit an estimate to install a designed external application below ground waterproofing system. The firm was then instructed by the main contractor to carry out the installation of the agreed system.

A lime suppressant was applied to the concrete block walls to reduce the risk of 'free lime' affecting the system. A two-coat waterproofing slurry was applied to the wall-floor joint area with a waterproof fillet at the base of the wall using a specialist mortar.


A polymer modified bitumen thick film sealant for waterproofing external structures was applied in two-coats to which a glass fibre mesh was installed over the wall fillet and into the internal corners. The external waterproofing membrane was then applied which provided a 4-layer high compression strength membrane system. Specialist fixing was applied to seal the waterproofing system.

This resulted in the delivery of a fully BS8102:2009 compliant watertight basement external wall with ProTen Company Guarantee, leaving it ready for the main contractor to backfill and then apply necessary finishes.

For more information on property care, visit www.protenservices.co.uk.