Superior Barrier Protection for Basements and Foundations
Protect your structure from water ingress and harmful ground gases with our BBA-certified External Type A Waterproofing systems, engineered to BS 8102:2022 standards. Our collection from Newton, Wykamol, Visqueen, Tecnopol and Mapei offers a full range of pre-applied and post-applied membranes, cementitious slurries, primers, and drainage solutions.
Designed for below-ground structures, retaining walls, basements, and foundations, these advanced barrier systems deliver long-term protection against groundwater, radon, methane, and CO₂.
What Is Type A Waterproofing?
Type A (Barrier Protection) waterproofing creates a continuous external membrane that prevents water reaching the internal structure. Installed either before or after concrete works, these membranes form a complete envelope around your basement or foundation, meeting the performance criteria of BS 8102:2022.
System Benefits
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Pre-applied membranes (HDPE and bentonite) for below-slab and blind-side waterproofing.
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Post-applied self-adhesive and liquid membranes for formed walls and complex details.
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Gas-resistant barrier protection against radon, methane, and carbon dioxide.
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Complete ancillaries including primers, reinforcement tapes, protection boards, and geodrain sheets.
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Compatible with Type B and Type C systems for integrated waterproofing strategies.
Applications
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New-build basements and semi-basements
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Lift pits, tunnels, retaining walls, and podium decks
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Raft foundations and waterproof concrete structures
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Brownfield sites requiring gas membrane compliance
Leading Waterproofing Systems
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Newton HydroBond – fully bonded pre- and post-applied membranes for seamless protection.
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Wykamol Sureproof & Technoseal – self-adhesive and DPM membranes for external tanking.
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Cementitious Slurries & Mortars – flexible coatings for detailing and structural sealing.
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Geodrain & Protection Boards – safeguard membranes during backfill and relieve hydrostatic pressure.
Need specification help? Call 01268 472358 for expert technical support, take-off assistance and trade pricing.
Why Choose Clever Shield Waterproofing
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BBA-certified systems from trusted brands
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Fully compliant with BS 8102:2022 and CIRIA C780
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Options for combined water and gas protection
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Proven performance for new-build and retrofit projects
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Complete range of accessories for full-system integrity
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Fast UK delivery and exclusive trade discounts
Frequently Asked Questions
What is External Type A waterproofing?
It’s an external membrane system that prevents water and gas ingress through the structure. Installed to the outside of basements and retaining walls, it forms a watertight, continuous barrier.
Do I need pre-applied or post-applied membranes?
Pre-applied membranes are used below slabs or blind-side pours before concrete placement. Post-applied membranes are installed after formwork removal for walls and details.
Can these systems stop radon and methane gas?
Yes. Selected membranes within our range provide dual water and gas resistance to radon, methane, and CO₂, ideal for brownfield and contaminated land developments.
Are these systems compliant with BS 8102:2022?
Absolutely. All products are designed in line with BS 8102:2022 and BBA-certified for proven performance and long-term durability.
Do I need protection boards or drainage layers?
Yes. Protection boards and geodrain sheets prevent mechanical damage and manage water pressure, ensuring the system’s longevity.
Related Waterproofing Solutions
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Type B Integral Waterproofing (Concrete Additives)
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Type C Cavity Drain Systems
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Gas Membranes & Accessories
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Primers & Adhesion Promoters
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Protection Boards & Drainage Layers
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Pump Chambers & Basement Alarms
