Product Data Sheet Show all documents

SikaProof®-612

PRE-APPLIED FULLY BONDED WATERPROOFING MEMBRANE FOR BASEMENT AND FOUNDATIONS

SikaProof®-612 is a fully bonded, pre-applied sheet membrane waterproofing system for basement and foundation structures. It is two-layer composite membrane combined with existing single sheet layer (TPO polymer layer) and functional layer. SikaProof®-612 has strong chemical and physical bonding properties to fresh concrete, so lateral water migration between membrane and the concrete is reduced to a minimum.

  • Pre-applied: Fixed before placing reinforcement and casting concrete
  • Strong bonding with concrete chemically and mechanically
  • No lateral water underflow or migration between the concrete structure and the membrane system
  • Optimized workability
  • Optimized flexibility, tensile strength and multi-axial elongation
  • Highly flexible with crack bridging abilities
  • Dimensional stability
  • Excellent structural movement properties
Product Data Sheet Show all documents

Usage

SikaProof®-612 may only be used by experienced professionals. Waterproofing, damp-proofing and concrete protection for basements against ground water ingress. Suitable for use on:
  • Reinforced concrete base slabs
  • Extension and reconstruction works
 

Advantages

  • Pre-applied: Fixed before placing reinforcement and casting concrete
  • Strong bonding with concrete chemically and mechanically
  • No lateral water underflow or migration between the concrete structure and the membrane system
  • Optimized workability
  • Optimized flexibility, tensile strength and multi-axial elongation
  • Highly flexible with crack bridging abilities
  • Dimensional stability
  • Excellent structural movement properties

Packaging

SikaProof®-612 standard rolls are wrapped individually in a knitted plastic bag.

1.00 m (width) x roll length 20 m

2.00 m (width) x roll length 20 m

Colour

Sheet layer: Smooth / White

Function layer: Rough

Product Details

Product Information

Composition

Polymer layer:       Sheet layer

Functional layer:     PSA / quartz sand layer

Shelf life

SikaProof®-612 have a shelf-life of 12 months from date of production.

 

Storage conditions

Product must be stored in original unopened and undamaged sealed packaging in dry conditions and temperatures between + 5°C and +35°C, Store in a horizontal position.

Do not stack pallets of the rolls on top of each other, or under pallets of any other materials during transport or storage. Do not stack rolls more than 5 layers.

Always refer to packaging.

Effective thickness

1.2mm (-5% / +10%) 

(Sheet layer 0.9 mm / function layer 0.3 mm)

EN 1849-2
System information

System structure

The following system products must be used in pre-applied system:

  • SikaProof®-612 sheet membrane
  • SikaProof® Tape 80 AP for detailing or optional for internal jointing
Technical Information

Resistance to impact

400 mm

EN 12691

Tensile strength

≥16 MPa

GB/T 23457

Elongation

≥ 400 %

GB/T 23457

Adhesion in peel

≥ 1.5 N/mm no treatment (with concrete substrate)

GB/T 23457

Tear strength

≥ 400 N

GB/T 23457

Joint shear resistance

450 ± 10% （N/50mm)

(EN12317-2)

Foldability at low temperature

Main Material -35°C  no cracks

GB/T 23457

No crack at -30°C

ASTM D1970

Watertightness

0.3 MPa 120min watertight

GB/T 23457

Resistance to lateral water migration

Pass, up to 7 bar (71m)

ASTM D5385, modified

Application

Application Information

Substrate temperature

+5 °C min. / +60 °C max.
Application steps

SUBSTRATE QUALITY

SikaProof®-612 membrane must be applied on a sufficiently stable, well compacted (blinding layer) substrate to avoid movement during the construction works. Substrate surface must be smooth, uniform and clean. Substrate can be damp, slightly wet or ponding water must be avoided.

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