SikaProof® A+ 12
SikaProof® A+ 12 is a 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. The membrane can be pre-applied. Joints are sealed with cold-applied tapes or by thermal jointing using appropriate heating equipment. The total thickness is 1.75 mm with a 1.20 mm thick waterproofing layer.
- Dual bond: full and permanent mechanical and chemical bond with the concrete structure
- Can be used as a pre and post-applied system
- Joints can be sealed using thermal jointing or cold applied tapes
- No lateral water migration between concrete and membrane
- Excellent barrier to radon
- 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
Usage
SikaProof® A+ 12 is used for:- Damp-proofing, waterproofing and concrete protection for basements and other below-ground concrete structures.
- Precast reinforced concrete structures
- Cast-in-place reinforced concrete structures
- Existing reinforced concrete structures
Advantages
- Dual bond: full and permanent mechanical and chemical bond with the concrete structure
- Can be used as a pre and post-applied system
- Joints can be sealed using thermal jointing or cold applied tapes
- No lateral water migration between concrete and membrane
- Excellent barrier to radon
- 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
Packaging
Roll width | 1.00 m or 2.00 m |
Roll length | 20 m |
Refer to the current price list for available packaging variations.
Colour
Top layer colour | Light yellow |
Bottom layer colour | Grey |
Product Details
ENVIRONMENTAL INFORMATION
Specific Environmental Product Declaration (EPD) in accordance with EN 15804. EPD independently verified by BRE Global
Contributes towards satisfying Materials and Resources (MR) Credit: Building product disclosure and optimization — Environmental Product Declarations under LEED® v4
Contributes towards satisfying Materials and Resources (MR) Credit: Building Product Disclosure and Optimization — Material Ingredients under LEED® v4
APPROVALS / STANDARDS
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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
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Watertightness functional test PG FBB Part 1, WISSBAU, Test report No. 2019-231-1
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Watertightness functional test PG FBB Part 1, WISSBAU, Test report No. 2018-275-1
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Watertightness functional test PG FBB Part 1, WISSBAU, Test report No. 2018-276-1
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Radon diffusion coefficient, SikaProof® A+ 12, Dr. Kemski, Test report No. 2022081101e
Chemical Base
Membrane Layer | Flexible Polyolefin (FPO) |
Hybrid Layer | Cement modified polymer |
Shelf Life
24 months from date of production
Storage Conditions
The Product must be stored in original unopened and undamaged sealed packaging in dry conditions and temperatures between +5 °C and +30 °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. Always refer to the packaging.
Effective Thickness
Total Thickness (=deff) | (1.75 +0.18 / -0.09) mm |
Thickness Waterproofing Layer | (1.20 +0.12 / -0.06) mm |
Mass per Unit Area
(1.65 +0.17 / -0.09) kg/m² | (EN 1849-2) |
System Structure
The following products are part of the pre-applied system:
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SikaProof® A+ 12 sheet membrane
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SikaProof® Tape A+ N for detailing and for internal jointing
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SikaProof® Sandwich Tape
Complementary products are available for detailing and joint solutions.
Resistance to Impact
Method A, Hard support | ≥ 400 mm |
Method B, Soft support | ≥ 400 mm |
Tensile Strength
Longitudinal (MD) | ≥ 750 N/50mm |
Transversal (CMD) | ≥ 750 N/50mm |
Joint Shear Resistance
≥ 100 N/50 mm | (EN 12317-2) |
Reaction to Fire
Class E | (EN 13501-1) |
Accelerated Ageing in Alkaline Environment Tensile Strength
Tested for 28 days at +23 °C | Pass |
Tested for 24 hours at 60 kPa | Pass |
Water Tightness
Method B, 24 hours at 60 kPa | Pass |
Durability of Water Thightness against Ageing
Aged 12 weeks at +70 °C, tested 24 hours at 60 kPa | Pass |
Durability of Water Tightness against Chemicals
Calcium hydroxide, aged 28 days at +23 °C, tested 24 hours at 60 kPa | Pass |
Service Temperature
Maximum | +35 °C |
Minimum | -10 °C |
Adhesion in Peel
≥100 N/ 50 mm to concrete after 28 days | (DIN EN 1372) |
Resistance to lateral water migration
Up to 7 bar | Pass |
Permeability to Radon
(4.74 × 10-13–6.36 × 10-13) m 2/s | (ISO/TS 11665-13) |
Application
Ambient Air Temperature
Maximum | +45 °C |
Minimum | +5 °C |
Substrate Temperature
Maximum | +60 °C |
Minimum | +5 °C |
APPLICATION
IMPORTANT
Strictly follow installation procedures
Strictly follow installation procedures as defined in Method Statements, application manuals and working instructions which must always be adjusted to the actual site conditions.
IMPORTANT
Exposure to UV or weathering
The Product is not resistant to permanent UV exposure or weathering.
- Protect as soon as possible but not later than 90 days after application
For information on application, refer to the following Sika® method statement:
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Method Statement - SikaProof® A+