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