Product Data Sheet Show all documents

SikaProof® A-12 HC

Fully bonded, pre-applied FPO sheet membrane waterproofing system for basements and other below ground structures in hot climate areas

SikaProof® A-12 HC is a fully bonded, composite sheet membrane waterproofing system for reinforced concrete structures designed for use in hot climate areas. It consists of an embossed polyolefin (FPO) based membrane laminated with a unique sealant and a non-woven fleece with a self-adhesive strip on the longitudinal side for the overlap. SikaProof® A-12 HC is cold-applied and pre-applied, as it is installed without heat or open-flames, and before the steel reinforcement is fixed and the concrete is poured. Suitable for use in hot and tropical climatic conditions.

  • Pre-applied, before the reinforcement is fixed and the concrete is poured
  • Fully and mechanically bonded to the reinforced concrete structure
  • No lateral water underflow between the concrete structure and the membrane system
  • High watertightness tested according to various standards
  • Easy to install with fully adhered joints (no welding required)
  • Cold-applied (no pre-heating or open flames)
  • Temporarily resistant to weathering and UV-light during construction
  • Specially designed for use in hot climate areas
  • Resistant to aging
  • High flexibility and crack-bridging abilities
  • Resistant to aggressive mediums in natural ground water and soil
  • Can be combined with other approved Sika Waterproofing / Joint Sealing Systems
SikaProof® A-12 HC
Product Data Sheet Show all documents

Usage

Damp-proofing, waterproofing and concrete protection for basements and other below ground concrete structures against ground water ingress. Suitable for use on:
  • Below ground reinforced concrete slabs
  • On reinforced concrete walls with both single and double-faced formwork
  • Extensions and reconstruction works
  • Prefabricated structures
 

Advantages

  • Pre-applied, before the reinforcement is fixed and the concrete is poured
  • Fully and mechanically bonded to the reinforced concrete structure
  • No lateral water underflow between the concrete structure and the membrane system
  • High watertightness tested according to various standards
  • Easy to install with fully adhered joints (no welding required)
  • Cold-applied (no pre-heating or open flames)
  • Temporarily resistant to weathering and UV-light during construction
  • Specially designed for use in hot climate areas
  • Resistant to aging
  • High flexibility and crack-bridging abilities
  • Resistant to aggressive mediums in natural ground water and soil
  • Can be combined with other approved Sika Waterproofing / Joint Sealing Systems

Packaging

SikaProof® A-12 HC rolls are wrapped individually in a yellow PE-foil.

Roll width

1 m and 2 m

Roll length20 m

Colour

Light yellow sheet membrane, laminated with a white fleece layer

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • Function test for area and especially for standard details, as penetrations and pile caps, Wissbau, according German standards, test report No. 2010-212 /-6 /-7
  • BBA technical approval for construction, Certificate No. 13/5075
  • BRE Environmental Product Declaration, according to EN 15804, BREG EN EPD No. 000109
Product Information

Composition

Membrane layer

Flexible Polyolefin (FPO)

Sealant gridPolyolefin (PO)
Fleece layerPolypropylene (PP)

Shelf life

18 months shelf life from date of production if stored properly in undamaged, unopened, original sealed packaging (for expiry date see label).

Storage conditions

Dry storage at temperatures from +5 °C up to +30 °C. Protect from direct sunlight, rain, snow, ice, humidity, etc. Store in a horizontal position. Do not stack pallets of the membrane rolls on top of each other, or under pallets of any other materials during transport or storage.

Effective Thickness

Total Thickness (= deff)

1.70 mm (-5 / +10 %)

Membrane Thickness1.20 mm

Mass per unit area

1.50 kg/m2(-5 / +10 %)
System information

System Structure

System Components:

  • SikaProof® A-12 HC, membrane in rolls of widths 1.0 and 2.0 m
  • SikaProof® Tape-150 HC or SikaProof® Tape-150 A, self-adhesive tape for internal jointing, width 150 mm
  • SikaProof® ExTape-150 HC, self-adhesive tape for external jointing, width 150 mm

Accessories: Accessories and complementary products are available additionally to create the relevant details and connections, see current Method Statement of SikaProof® A systems.
Technical Information

Resistance to Impact

≥  350 mm(EN 12691)

Resistance to Root Penetration

Pass 

(CEN/TS 14416)

Tensile Strength

Machine Direction

≥400 N/50 mm

Cross Direction≥300 N/50 mm

Elongation

Machine Direction

≥900 %

Cross Direction≥1150 %

Resistance to Tear

Machine Direction

≥550 N

Cross Direction≥600 N

Joint Shear Resistance

≥  275 N/50 mm

(EN 12317-2)

Reaction to Fire

Class E

(EN 13501-1)

Accelerated Ageing in Alkaline Environment

Pass(EN 1847) (28 d / +23 °C)
(EN 1928, Method B) (24 h / 60 kPa)

Resistance to lateral water migration

Pass, up to 7 bar

(ASTM D 5385 modified)

Durability of Watertightness against Ageing

Pass

(EN 1296) (12 weeks)

(EN 1928, Method B) (24 h / 60 kPa)

Durability of Watertightness against Chemicals

Pass

(EN 1847) (28 d/+23 °C)

(EN 1928, Method B) (24 h / 60 kPa)

Permeability to Radon

(5.3 ± 0.7) x 10-12 m2/s

(Certificate E-214/2011)

Permeability to Methane

180 ml/m2 x d (± 10 %)

(ISO 7229)

Service Temperature

-10 °C min. / +35 °C max.

 

Application

Application Information

Ambient Air Temperature

+10 °C min. / +45 °C max.

Substrate Temperature

+10 °C min. / +60 °C max.
Application steps

SUBSTRATE QUALITY

SikaProof® A-12 HC membrane must be applied on a sufficiently stable substrate to avoid movement during the construction works. A smooth, uniform and clean substrate surface is essential to prevent membrane damage. Large gaps and voids less than 12 to 15 mm be closed before installation of the SikaProof® A-12 HC membrane system. The substrate can be damp or slightly wet, but ponding water must be avoided. Suitable substrates to fix the SikaProof® A-12 HC membrane system onto include:

  • Concrete blinding
  • Formwork
  • Rigid thermal insulation
  • Plywood sheets / forms
  • Compacted soil/fill with geotextile (only for limited requirements)

Documents