44, William Mews, Knightsbridge, London, SW1X 9HQ

SWS Ltd were appointed to provide a solution to water infiltration tracking along a ground beam which extended to the pavement/roof underside; a trafficable pavement area spanned part of the basement footprint.

Project Details

A basement conversion that had been completed in the last 5 years. SWS were appointed to investigate a leak that appeared to be emanating from along a beam that supported the ground floor slab. On examination, SWS also discovered there were issues with the trafficable area that formed part of the roof to the basement.

Solution

A Newton 313 WP (water plug) was used to stop water infiltration around the steel beam. The surrounding area/beam were primed with Soprema Alsan 171 combination primer and waterproofed with Soprema Alsan 770TX. The construction joint was injected with Newton 321 FSP while the expansion joints were sealed with Newton 106 Flexproof after being primed with Newton 916 P.

The entire trafficable area was then waterproofed. This area was first primed with Soprema Alsan 171 combination primer then, 2 coats of Soprema Alsan 770 resin were applied to the horizontal surface and reinforced with Soprema Alsan RS-fleece while 2 coats of Soprema Alsan 770TX resin were applied to the verticals and reinforced with Soprema Alsan RS-fleece. A final antislip coating: Soprema Alsan 971F textured coating was applied to the horizontal area. Installation was carried-out in accordance with industry best practice and to the manufacturer’s specifications