case study latitude housing development, …...pre-applied sodium bentonite slabs, with riw liquid...
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P E A C E O F M I N DG U A R A N T E E D
CASE STUDY
Cast Contracting Ltd01256 763100 [email protected] www.ccl-ltd.netLodge Farm Hook Road North Warnborough Hook Hampshire RG29 1HA
Grosvenor House, St Georges HillA structural waterproofing solution was required for an impressive new build basement in WeybridgeCAST CONTRACTING LTD
THE CHALLENGEWaterproofing Specialists Cast Contracting Ltd (CCL) were employed to design, supply and install a complete waterproofing solution to this new build development, suitable for the concrete wall and slab construction of the basement including podium decks.
These channels drained into four sump collection pits which each housed Newton’s twin sump pump systems including battery back-up and high level water alarm. Newton’s 107F cementitious coating was installed to the lift pits and service trenches, external courtyard area and to the top of the concrete roof decks above the basement areas. The area was then protected with Newton 407 deckdrain system, before the finishes were completed and carried out by others.
Finally, to complete the waterproofing works, Newton 508 mesh cavity drain membrane was installed to the concrete walls of the vehicle ramp, prior to others installing a decorative rendered finish.
Grosvenor House is an imposing luxury property built in the private estate of St George’s Hill in Weybridge. It features a large 1000m2 basement below the ground, comprising garage, swimming pool & sauna, gymnasium, cinema, plant/ storage rooms and staff quarters.
THE SOLUTION CCL recommended the installation of a cementitious crystalline coating to all concrete substrates prior to installing a full Newton Water Management system. This consisted of John Newton’s 8mm cavity drainage membrane to the retaining walls and concrete slabs above a 50-100mm thick extruded polyester insulation.
To ensure the system was fully maintainable and to be fully compliant with BS8102 ‘protection of below ground structures from water from the ground, ’ CCL installed a preformed drainage channel to the wall/floor junctions with regular inspection ports.
CASE STUDY Latitude Housing Development, Pylands LaneA dual waterproofing solution was re-quired for a collection of semi-detached houses on a new housing development in Bursledon
THE CHALLENGE
THE SOLUTION
Latitude is a new housing development from Bellway Homes set in the small village of Bursledon, near to the River Hamble. The contemporary development comprises a collection of high specification apartments and 2 ,3 ,4 and 5 bedroom houses.
Waterproofing Specialists Cast Contracting Ltd (CCL) were commissioned by John Reilly Civil Engineering Ltd, to install an RIW
To form the ‘Type A’ waterproofing system required, CCL installed RIW’s Structureseal Pre-applied Sodium Bentonite membrane under the concrete slabs, with RIW Liquid Asphaltic Compound (LAC) spray applied coating to the concrete retaining walls. RIW Double Drain was installed to protect the membrane during backfilling operations and to help the drainage of water to the maintainable land drain. CCL installed RIW Sealing Compound around pile heads, and RIW Sheetseal 226 self-adhesive membrane to the transition between Structureseal and LAC, as reinforcement to the wall/floor junctions.
dual waterproofing system into a series of new semi-detached houses at the site. The houses, built on a sloping area of the site, were to be constructed with an earth retaining wall on three sides. The residential development needed to be waterproofed to a Grade 3 habitable environment in accordance with BS 8102:2009 (Protection of below ground structures against water from the ground).
The second and final form of defence was achieved with the installation of a ‘Type C’ fully maintainable water management system to the internal face of the structure. This included the installation of RIW’s R7 Cavity Drain membrane to the concrete retaining walls and R20 Cavity Drain membrane to the concrete slab fitted above an extruded polystyrene insulation layer. CCL incorporated the installation of RIW’s Aquachannel perimeter drain which connected to gravity drainage outlets positioned at the non-retaining side of the property. To allow for maintenance of the system, inspection ports were fitted within the channel.
Cast Contracting Ltd01256 763100 [email protected] www.ccl-ltd.netLodge Farm Hook Road North Warnborough Hook Hampshire RG29 1HA
PRODUCTSRIW Structureseal
RIW LAC
RIW Double Drain
RIW R7 & R20 Cavity Drain
RIW Aquachannel
75mm extruded polystyrene insulation
RIW Sheetseal 226
P E A C E O F M I N DG U A R A N T E E D
CASE STUDY
Cast Contracting Ltd01256 763100 [email protected] www.ccl-ltd.netLodge Farm Hook Road North Warnborough Hook Hampshire RG29 1HA
Grosvenor House, St Georges HillA structural waterproofing solution was required for an impressive new build basement in WeybridgeCAST CONTRACTING LTD
THE CHALLENGEWaterproofing Specialists Cast Contracting Ltd (CCL) were employed to design, supply and install a complete waterproofing solution to this new build development, suitable for the concrete wall and slab construction of the basement including podium decks.
These channels drained into four sump collection pits which each housed Newton’s twin sump pump systems including battery back-up and high level water alarm. Newton’s 107F cementitious coating was installed to the lift pits and service trenches, external courtyard area and to the top of the concrete roof decks above the basement areas. The area was then protected with Newton 407 deckdrain system, before the finishes were completed and carried out by others.
Finally, to complete the waterproofing works, Newton 508 mesh cavity drain membrane was installed to the concrete walls of the vehicle ramp, prior to others installing a decorative rendered finish.
Grosvenor House is an imposing luxury property built in the private estate of St George’s Hill in Weybridge. It features a large 1000m2 basement below the ground, comprising garage, swimming pool & sauna, gymnasium, cinema, plant/ storage rooms and staff quarters.
THE SOLUTION CCL recommended the installation of a cementitious crystalline coating to all concrete substrates prior to installing a full Newton Water Management system. This consisted of John Newton’s 8mm cavity drainage membrane to the retaining walls and concrete slabs above a 50-100mm thick extruded polyester insulation.
To ensure the system was fully maintainable and to be fully compliant with BS8102 ‘protection of below ground structures from water from the ground, ’ CCL installed a preformed drainage channel to the wall/floor junctions with regular inspection ports.
Cast Contracting Ltd01256 763100 [email protected] www.ccl-ltd.netLodge Farm Hook Road North Warnborough Hook Hampshire RG29 1HA
CLIENT TESTIMONIAL:
“ The specialist waterproofing team from CCL worked closely with main contractor Bellway Homes and John Reilly Civil Engineering Ltd to install the most effective waterproofing solution for the project. Their attendance at regular design meetings ensured the correct sequencing and strict installation deadlines were achieved onsite.”
Matt Robbins, Quantity Surveyor, John Reilly Civil Engineering Limited