SikaProof, the high performance sheet membrane waterproofing system for below-ground applications from global building materials manufacturer Sika can now be applied to concrete post-construction, with new and easy to apply variant SikaProof P-12.
SikaProof P-12 is a full and permanently bonded self-adhesive composite sheet membrane waterproofing system for reinforced concrete structures including horizontal slabs, decks and podiums, vertical walls, extensions and reconstruction works, and precast concrete structures.
The product consists of a highly flexible polyolefin (FPO)-based membrane which is pre-coated with a unique adhesive sealant layer making the membrane system itself self-adhesive. The cold-applied system can be installed onto hardened concrete structures or after double-sided formwork on a wide variety of basement applications using a simple peel and stick process which avoids the need for heat or open flames. SikaProof P-12 provides effective high performance waterproofing and concrete protection for basements and other below ground structures against ground water ingress with no lateral water underflow.
By contrast, the established pre-applied SikaProof-A membrane is applied onto the substrate before concrete is poured, and consists of an embossed, highly flexible polyolefin membrane with a special factory-applied grid pattern of sealant protected by a non-woven fleece laminated into the sealant grid. The bond is created when the fleece is completely adhered to fresh concrete, preventing any lateral water underflow and migration between the membrane system and structural concrete. The externally-applied system is effective even in the event of any local damage to the membrane.
Based on Sika’s proven membrane technology which has been successfully used since the early 1990s in tunnel waterproofing, SikaProof delivers long life expectancy even in aggressive conditions such as seawater and soil with high sulphate content, or humic and other acids. SikaProof offers specifiers a variety of advantages over traditional waterproofing including longer life expectancy than some plastic alternatives and rigorously-tested detailing solutions for joints and penetrations.
Alex Burman, Product Manager Waterproofing, commented: “SikaProof P-12 allows a wider range of construction projects to enjoy the high performance waterproofing benefits of the SikaProof system by offering a post-applied solution. It joins the comprehensive range of Sika waterproofing solutions which enable designers to provide complete waterproofing for below-ground areas.”
The system has been tested to ASTM D 5385, CE certification in accordance with British Standard EN 13967, and other functional tests for detail solutions. It is ideal for use in waterproofing reinforced concrete basements and other below-ground structures in housing, commercial, leisure, manufacturing and warehouse sectors. Engineered structures such as retaining walls can also be protected using the system.
The SikaProof system is user-friendly for contractors, being quickly installed, and requires no additional investment in special tools or equipment. No welding is required on site, resulting in time and cost savings.
Sika is the only manufacturer that provides the full range of waterproofing options to specifiers, whether it’s for a new build or a refurbishment. Solutions for new build include internally and externally-applied membrane systems including SikaProof and Sikaplan, as well as waterproof mortars, bituminous coatings and watertight concrete. In addition the Sika 1 Pre-bagged Waterproofing System and Sika Cavity Drain are ideal for below-ground refurbishment projects.
