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Commercial

Lypiatt Lodge

Basement Waterproofing
When this Georgian Grade II listed property in the heart of Cheltenham was granted planning permission to be remodelled and renovated, a sympathetic yet effective basement waterproofing system was required.

The Project

Lypiatt Lodge sits in the centre of Montpellier, one of the main Regency districts in Cheltenham. The building was due to be converted into 13 new luxury apartments, but required a Grade 3 ‘habitable environment’ waterproofing solution for the extensive basement and lower ground floor areas that would meet BS 8102:2009 standards. We were approached by architects RRA to protect these areas from dampness and water ingress.

The Challenges

  • Any solution had to be agreed with a conservation department to ensure it was sympathetic to the property
  • Maintaining the structural and aesthetic integrity of a Grade II listed property

Our Approach

When dealing with listed buildings, methods must meet with stringent guidelines, which rules out a lot of waterproofing products that require extensive surface preparation. Instead, our CSSW-qualified team decided that a cavity drain membrane system would work best, as this can be sympathetically applied with little preparation and minimal fixings. Once installed, the membrane provides an impervious barrier between the damp surface and the new internal wall, preventing moisture and vapour from affecting internal finishes. To avoid having to cut recesses into the floor slab for the drainage channels, we installed an XPS 500-C insulation that creates a drainage void without affecting the compressive strength. The drainage channels were then discharged into two purpose-built sump chambers, containing two NP400 pumps per unit.

Our Approach

When dealing with listed buildings, methods must meet with stringent guidelines, which rules out a lot of waterproofing products that require extensive surface preparation. Instead, our CSSW-qualified team decided that a cavity drain membrane system would work best, as this can be sympathetically applied with little preparation and minimal fixings. Once installed, the membrane provides an impervious barrier between the damp surface and the new internal wall, preventing moisture and vapour from affecting internal finishes. To avoid having to cut recesses into the floor slab for the drainage channels, we installed an XPS 500-C insulation that creates a drainage void without affecting the compressive strength. The drainage channels were then discharged into two purpose-built sump chambers, containing two NP400 pumps per unit.

The Result

Both the architect and client were delighted with the end result, and the project was completed in time and on budget.

The Result

Both the architect and client were delighted with the end result, and the project was completed in time and on budget.

Customer Insights

Superb! Great company that always put their clients first. Really took the time to talk through the work required and consideration was given to my tenants to ensure they were kept informed of timings . Did a superb job and I would highly recommend – they have won awards for a reason!

JT

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