Here we have MacLennan operatives installing an internal cavity membrane waterproofing system on top of closed cell insulation, including waterseal tape detailing around the internal pipe penetrations and overlaps of each membrane sheet. Open cell Insulation was then applied over the membrane.

Internal Waterproofing Systems such as this one, especially when combined with external waterproofing and sump systems ensure a watertight finish to any property.

Have a look at our “New Build Basement Waterproofing, Chesham, Surrey” Case study for an in depth explanation into the use of this system with Datasheets and 3D details, or our cavity membrane system page for an overview of the system and its benefits.

Here is a MacLennan operative sealing around service ducts on external waterproofing, it is important that service ducts are properly sealed because most water ingress occurs at the details.