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SikaProof® A

Verified by manufacturer 11 months ago

Sika Limited

Fully bonded tanking membrane for below ground structures.

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+44 (0)1707 394444 Website

Description

A fully bonded tanking membrane for waterproofing reinforced concrete basements and other below ground structures. Typical projects are residential and industrial buildings such as housing, commercial, leisure facilities, manufacturing plants and warehouses. Engineered structures, such as retaining walls, tunnel galleries, potable water tanks, waste water storage treatment structures and tanks, can also be waterproofed externally.

SikaProof® A can be used in different ground conditions including various levels of groundwater from damp soil, to percolating water or water under hydrostatic pressure. Additionally it can be exposed to different levels of other aggressive conditions.

SikaProof® A consists of an embossed, highly flexible polyolefin membrane, with a special grid pattern of sealant which creates 'mini watertight compartments'. This sealant grid seals and blocks any lateral water underflow, even in the event of any local damage to the membrane. The sealant grid itself is also protected by the specially designed fleece that is laminated into the grid sealant. This fleece forms a full and durable mechanical bond between the SikaProof® A membrane and the hardened concrete.

The SikaProof® A membrane has a self-adhesive strip along one side to allow laps to be formed and sealed. End joints and details are formed using SikaProof® adhesive strips and tapes.

General information

Color

Yellow

Finish

Other

Material

Flexible polyolefin (FPO)

Shape

Other

Length

20000 mm

25000 mm

Width

1000 mm

2000 mm

Height

0.8 mm

1.2 mm

Warranty description

15 year

20 year

25 year

Uniclass

Pr_25_57_10_94 Vapour-permeable sheetsPrimary

CAWS

J40/297 Waterproofing/ damp-proofing/ gas-retardant membrane

Product range

Waterproofing

Specification data - Vapour-permeable sheets

Standard product features

Composition:

  • Membrane layer: Flexible Polyolefin (FPO).
  • Sealant grid: Polyolefin (PO).
  • Fleece layer: Polypropylene (PP).

Performance:

  • Watertightness to liquid water (BS EN 1928 B): Pass.
  • Durability of watertightness against ageing (BS EN 1296): Pass.

Product Options

Product reference:

– SikaProof® A-05:

  • Thickness: 1.00 mm.
  • Mass: 0.90 kg/m².
  • Roll length: 30 m.
  • Resistance to impact (BS EN 12791): ≥150 mm.
  • Resistance to tear (BS EN 12310-1): ≥350 N.
  • Joint strength (BS EN 12317-2): ≥175 N/50 mm.
  • Tensile strength (BS EN 12311-1): MD, ≥300 N/50 mm; TD, ≥200 N/50 mm.
  • Elongation (BS EN 12311-1): MD, ≥300%; TD, ≥450%.
  • Water vapour transmission (BS EN 1931): 0.75–0.95 g/m².24h.

– SikaProof® A-08:

  • Thickness: 1.25 mm.
  • Mass: 1.15 kg/m².
  • Roll length: 25 m.
  • Resistance to impact (BS EN 12791): ≥250 mm.
  • Resistance to tear (BS EN 12310-1): ≥350 N.
  • Joint strength (BS EN 12317-2): ≥250 N/50 mm.
  • Tensile strength (BS EN 12311-1): MD, ≥350 N/50 mm; TD, ≥250 N/50 mm.
  • Elongation (BS EN 12311-1): MD, ≥450%; TD, ≥450%.
  • Water vapour transmission (BS EN 1931): 0.75–0.95 g/m².24h.

– SikaProof® A-12:

  • Thickness: 1.60 mm.
  • Mass: 1.50 kg/m².
  • Roll length: 20 m.
  • Resistance to impact (BS EN 12791): ≥350 mm.
  • Resistance to tear (BS EN 12310-1): ≥350 N.
  • Joint strength (BS EN 12317-2): ≥250 N/50 mm.
  • Tensile strength (BS EN 12311-1): MD, ≥500 N/50 mm; TD, ≥400 N/50 mm.
  • Elongation (BS EN 12311-1): MD, ≥450%; TD, ≥450%.
  • Water vapour transmission (BS EN 1931): 0.50–0.75 g/m².24h.

Case studies

Bank Station Capacity Upgrade, London - Watertight Concrete

Bank Station Capacity Upgrade, London - Watertight Concrete

Marketfield Way, Redhill - Basement - Watertight Concrete

Marketfield Way, Redhill - Basement - Watertight Concrete

Manchester Engineering Campus Development (M.E.C.D)

Manchester Engineering Campus Development (M.E.C.D)

1 Bank Street, Canary Wharf, London

1 Bank Street, Canary Wharf, London

Papworth Hospital, Cambridge

Papworth Hospital, Cambridge

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