Waterproofing A Dry Site

One issue we encounter time and time again is when a site is bone dry but we still need to waterproof. Often the end client struggles to understand the necessity of the waterproof layer and its cost.
The British Standard BS8102 2022 is the code of practice for the protection of below-ground structures against water ingress. This Standard states that we must assume that water will bear against the structure at some point during its life.
“Even when the site investigation indicates dry conditions, the risk of some water-logging in the future should be assumed.”
Recently we encountered a basement flat that was constructed 10 years ago without adequate water protection. It remained dry until five years later, when a new build apartment block with an underground car park, was built next door. The new building changed the existing conditions – it blocked the natural water courses and raised the hydrostatic pressure of the area which caused water ingress into the flat.
It was an unfair circumstance for our clients because through no fault of their own, they needed to undertake remedial works. The water ingress had damaged their floorboards, and walls and caused an undesirable odour. This was not ideal for the client but is a great example of why we waterproof underground structures when there is not a drop of water in sight.

It’s all about future-proofing and helping your build last for a very long time. Please contact Arti if you are constructing a new basement or if your home has not been sufficiently waterproofed so that we may come up with a bespoke solution made especially for your property’s needs.