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SikaProof®-A+ 12 - Sheet membrane

Verified by manufacturer 4 months ago

Sika Limited Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

Flexible polyolefin (FPO) sheet membrane for pre-applied fully bonded below ground waterproofing.

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+44 (0)1707 394444 Website

Application

Damp-proofing, waterproofing and concrete protection for basements and other below ground concrete structures. Suitable for use on:

  • Precast reinforced concrete structures.
  • Cast-in-situ reinforced concrete structures.

Description

SikaProof® A+ 12 is a flexible polyolefin (FPO) based sheet membrane for below ground waterproofing of reinforced concrete structures. A special hybrid bonding layer on the membrane forms a full and permanent dual bond with the concrete structure. Joints are sealed with cold-applied tapes or by thermal jointing using appropriate heating equipment. The total thickness is 1.75 mm with a membrane thickness of 1.20 mm.


Features and benefits:

  • Dual bond: full and permanent mechanical and chemical bond with the concrete structure.
  • Can be used as a pre-applied system.
  • Joints can be sealed using thermal jointing.
  • No lateral water migration between concrete and membrane.
  • Fast and easy installation.
  • High flexibility and crack-bridging capabilities.
  • High watertightness tested according to various standards.
  • Good resistance to aggressive conditions in natural ground water and soil.
  • Temporarily resistant to weathering and UV exposure.
  • Can be combined with other approved Sika® waterproofing and joint sealing systems.
  • Environmental Product Declaration (EPD) in accordance with EN 15804. EPD independently verified by BRE Global.


Approvals/ standards:

  • CE marking and declaration of performance based on EN 13967:2012 Flexible sheets for waterproofing — Plastic and rubber damp proof sheets including plastic and rubber basement tanking sheet — Definitions and characteristics.
  • Watertightness functional test PG FBB Part 1, WISSBAU, Test report No. 2019-231-1.
  • Watertightness functional test PG FBB Part 1, WISSBAU, Test report No. 2018-275-1.
  • Watertightness functional test PG FBB Part 1, WISSBAU, Test report No. 2018-276-1.

General information

Color

Yellow

Guidance for specification option:

Membrane layer.

Grey

Guidance for specification option:

Bonding layer.

Material

Flexible polyolefin (FPO)

Guidance for specification option:

Membrane layer.

Polymer-modified cement

Guidance for specification option:

Hybrid layer.

Shape

Formless

Length

20000 mm

Width

1000 mm

2000 mm

Height

1.20 mm

Guidance for specification option:

Membrane thickness.

Warranty description

15 year

Guidance for specification option:

When used alone with standard reinforced concrete - https://www.sikawaterproofing.co.uk/about-sika-waterproofing/sika-concrete-and-waterproofing-guarantee-process/

20 year

Guidance for specification option:

When used as part of a Dual System (Including Sika Watertight Concrete or a Sika Cavity Drain System) - https://www.sikawaterproofing.co.uk/about-sika-waterproofing/sika-concrete-and-waterproofing-guarantee-process/

25 year

Guidance for specification option:

When used as part of a Triple System (Including Sika Watertight Concrete and a Sika Cavity Drain System) - https://www.sikawaterproofing.co.uk/about-sika-waterproofing/sika-concrete-and-waterproofing-guarantee-process/

Manufacturer guidance

https://www.sikawaterproofing.co.uk/about-sika-waterproofing/sika-concrete-and-waterproofing-guarantee-process/

Uniclass

Pr_25_57_65_60 Plastics sheetsPrimary

CAWS

J40/20 Loose-laid plastics or rubber sheet damp-proofing

J40/120 Loose-laid plastics or rubber sheet damp-proofing

J40/35 Loose-laid plastics or rubber gas-retardant membranes

J40/30 Loose-laid plastics or rubber sheet oversite damp-proofing

J40/130 Loose-laid plastics or rubber sheet oversite damp-proofing

J40/140 Loose-laid plastics or rubber sheet gas-retardant membranes

Specification data - Plastics sheets

Material

Flexible polyolefin (FPO).

Guidance for specification option:

Cement modified polymer hybrid layer.

Purpose

Waterproofing.

Standard

To BS EN 13967.

Performance characteristics

-

Tensile strength (minimum)

To EN 12311-2, ≥750 N/ 50 mm.

Guidance for specification option:

  • Accelerated Ageing in Alkaline Environment Tensile Strength: To EN 1847, Pass (28 d +23 °C); to EN 1928, Pass (Method B 24 h 60 kPa).

Manufacturer guidance

Longitudinal (MD) Method A and Transversal (CMD) Method A.

Elongation to break

To EN 12311-2, ≥1100%.

Manufacturer guidance

Longitudinal (MD) Method A and Transversal (CMD) Method A.

Resistant to underground gases

BS EN 13967.

Fire performance

To EN 13501-1, Class E.

Manufacturer guidance

Reaction to fire.

Form

Non-woven.

Physical properties

-

Colour

Light yellow.

Guidance for specification option:

Light yellow sheet membrane with grey bonding layer.

Weight (minimum)

1.65 kg/m² (+0.17/ -0.09).

Manufacturer guidance

Mass per unit area.

Dimensions

-

Thickness (minimum)

1.20 mm (membrane); 1.75 mm (total).

Width (minimum)

1 m.

2 m.

Roll length (minimum)

20 m.

Primer

SikaProof® Primer-01.

Guidance for specification option:

  • Ready to use solvent-dispersed primer, available in 5 kg and 12.5 kg metal tins.
  • Consult manufacturer for details and insert requirements.

Components

SikaProof® Sandwich Tape and SikaProof® Tape A+ N.

Guidance for specification option:

  • SikaProof® Sandwich Tape - Double-sided adhesive overlap tape based on a polyacrylic adhesive sandwiched between release liners.
  • SikaProof® Tape A+ N - Self-adhesive tape based on a polyacrylate adhesive with a carrier film and a release line for internal jointing.

Resistance to impact

To EN 12691, ≥400 mm.

Adhesion

To EN 1372, ≥100 N/ 50 mm.

Manufacturer guidance

Adhesion in peel (to concrete after 28 days).

Shear resistance of joints (to EN 12317-2)

≥100 N/ 50 mm.

Service temperature

+35℃ (maximum); -10℃ (minimum).

Watertightness

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

Guidance for specification option:

  • Durability of Water Tightness against Chemicals: To EN 1847, Pass (28 d +23 °C); to EN 1928, Pass (Method B 24 h).
  • Durability of Water Tightness against Ageing: To EN 1847, Pass (12 Weeks); to EN 1928, Pass (Method B 24 h 60 kPa).

Resistance

To ASTM D5385 and D5385M, Pass (up to 7 bar).

Manufacturer guidance

Resistance to lateral water migration.

Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate

Sika Tanking Membrane

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