Sika provided a quality, easy-to-apply waterproof system to facilitate the conversion of a school basement into a state-of-the-art, bio-energy centre and ensure it remains free from the perils of damp and water ingress for many years to come.
The concrete basement at Stretford Grammar School in Manchester required complete refurbishment due to a failing, leaking boiler system. Its transformation to a bio-energy centre capable of housing an array of hi-tech electrical systems and equipment to power the school and increase its energy efficiency required a proven, easy-to-apply, waterproof system.
Contractors Grade 2 Structural Repairs, appointed by Trafford Borough Council to carry out the waterproof installation, specified the BBA-approved Sika 1 Pre-bagged Waterproofing System; a specially-developed, hand-applied admixture which is mixed with pre-bagged mortars to provide the ultimate watertight protection for walls and floors.
Before the new waterproof system could be installed, existing boilers were removed from the basement along with water-damaged sections of concrete flooring. Sikadur-Combiflex Jointing System, consisting of a Sika FPO waterproofing tape and Sikadur 31 epoxy resin adhesive, was then applied to the walls and floors. Superb for sealing construction and expansion joints, cracks and fissures on concrete and masonry, this effective, simple-to-apply system helps create a perfectly level, blemish-free surface.
Sika 1 Pre-bagged Waterproofing System provided the floor’s 400m² top layer. When applied, it reacts with water to turn into a jelly-like substance, blocking all gaps and capillaries, to provide an impenetrable and invisible seal. By bonding monolithically with the substrate, it becomes one with the structure. Sika 1 Pre–bagged waterproofing system has also been certified by the British Board of Agrément (BBA) to last the life of the building, providing exceptional standards of durability and reliability.
Sika was also the solution for a failing, flat concrete roof which had caused water to leak into the pre-refurbished basement below. Sikafloor-405, a one-par, highly-elastic solvent was applied to the roof. Renowned for its slip and UV resistance, the system provides the perfect waterproof, crack-bridging coating for concrete structures such as balconies and terraces.
Steve Parry, Regional Manager at Grade 2 Structural Repairs, commented: “We’ve used Sika 1 Pre-bagged Waterproofing System on many occasions. It’s the best of its kind and its long-term benefits were ideal for this project. The client is absolutely delighted with the refurbished basement. They have absolute peace of mind that the expensive electrical equipment within the fully-furbished bio-energy centre will be long-term protected against water ingress.”
Thanks to the easy-to-apply benefits of the Sika 1 Pre–bagged waterproofing system, Grade 2 Structural Repairs was able to provide a basement that is safeguarded against the long-term risk of water ingress in just six weeks. The area is now ready for its long-awaited conversion to a bio-centre; an exciting step for the school in its ambition to reduce its carbon footprint.