SikaProof A+ 12 FPO Sheet Membrane
SikaProof A+ 12 FPO Sheet Membrane
Pre-applied FPO sheet membrane for fully bonded below ground waterproofing of reinforced concrete structures. 1.75 mm total thickness with dual mechanical and adhesive bond.
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Description
Description
SikaProof® A+ 12 – Pre-Applied FPO Sheet Membrane for Below Ground Waterproofing
SikaProof® A+ 12 is a premium polyolefin (FPO) based sheet membrane engineered for below ground waterproofing of reinforced concrete structures. Designed for pre-applied installation, it is loose laid onto prepared substrates or formwork before fixing reinforcement and casting concrete. A special hybrid bonding layer forms a permanent, fully bonded seal with fresh concrete — eliminating the risk of lateral water migration.
Total thickness: 1.75 mm | Membrane thickness: 1.20 mm | Mass per area: 1.65 kg/m²
Key Features
- Pre-applied: Fixed before placing reinforcement and casting concrete
- Dual bond: Mechanical and adhesive bond with fresh concrete
- High flexibility and crack-bridging capabilities
- No lateral water migration between the concrete structure and membrane system
- High watertightness tested to multiple international standards
- Fully and permanently bonded to the reinforced concrete structure
- Resistant to aggressive conditions in natural ground water and soil
- Easy to install with fully adhered joints
- Temporarily resistant to weathering and UV exposure during construction
- Compatible with other approved Sika® Waterproofing / Joint Sealing Systems
Applications
Ideal for damp-proofing, waterproofing, and concrete protection for basements and below ground concrete structures against ground water ingress. Suitable for:
- Reinforced concrete base slabs
- Reinforced concrete walls (single and double-faced formwork)
- Extension and reconstruction works
- Prefabricated structures
Packaging
| Product | Roll Width | Roll Length |
|---|---|---|
| SikaProof® A+ 12 | 1.00 m or 2.00 m | 20 m |
Appearance
Light yellow membrane with a light grey bonding layer.
Required Equipment
- Tape measure & marking pen
- Razor knife & scissors
- Pressure roller
- Clean lint-free cloth
- Metal straight edge & protective sheet for cutting
Substrate Requirements
The substrate must be sufficiently stable, smooth, uniform, and clean. Large gaps and voids (≥ 12–15 mm) must be filled prior to installation. Substrate can be damp or slightly wet — ponding water must be avoided. Suitable substrates include concrete blinding, formwork, rigid thermal insulation, and plywood sheets/forms. Read product datasheet for full information.
Why Buy from Epoxy Warehouse?
- ✅ Authorised Sika Distributor — genuine product, guaranteed
- ✅ Competitive pricing — we'll beat any genuine quote
- ✅ Pickup available from your nearest Sika warehouse
- ✅ Nationwide shipping across Australia
- ✅ Expert technical support from our team
Contact us with a competing quote and we'll match or beat it.
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Colour accuracy disclaimer: We have taken care to display the most accurate visuals of our products. However, we are not responsible for the colour accuracy of the device you are viewing our swatches on. These variations arise due to different computer monitors and devices (make, model and technology, as well as resolution, contrast and brightness control settings) in much the same way a scan will differ from an original image and a colour photocopy. Furthermore, coatings can exhibit variation in perceived colour depending on gloss level and application method. If you require a very specific colour match, please make your selection via actual swatches and colour boards available at our showroom.
Product Disclaimer: Ensure you read all product, technical and safety data sheets prior to application as liability falls on the applicator. All products must be applied in accordance with manufacturer’s recommended method.
