BUTYL RUBBER & POLYOLEFIN BACKED WATERPROOFING AND EXTERIOR JOINT SEALING MEMBRANE

Description 

CORKJOINT J-Seal CJ-212 Butyl Rubber & Polyolefin Backed Waterproofing and Exterior Joint Sealing Membrane is a special and unique system used to provide a permanent, flexible, water and soil barrier for joints in pre-cast elements, below and above ground. It is commonly used in construction projects to seal joints between dissimilar materials, such as concrete and steel or concrete and masonry.

The butyl rubber and polyolefin backing of J-SEAL® CJ-212 provides excellent adhesion to a variety of substrates, while the waterproofing layer provides protection against water infiltration. The membrane can be installed quickly and easily, without the need for special equipment or heat.

J-SEAL® CJ-212 is commonly used in a variety of applications, including building envelopes, plaza decks, balconies, parking garages, and other exterior joint sealing applications. Its versatility, ease of installation, and durability make it a popular choice for architects, engineers, and contractors. This product is part of our Sealing Systems product range.

Uses

• Box Culverts

• Underground Concrete Vaults

• Segmented Bridge Structures

• Wastewater Structures and Arched Bridge Structures

• Manholes

Advantages

• Fast and easy to install using CJ-200-15 Adhesive Primer

• Excellent resistance to puncture, tear and abrasions

• Aggressively bonds to concrete and metal structures

• Provides a permanent flexible water and soil barrier

• Will not shrink, harden or oxide upon aging

Limitation

• J-Seal® CJ-212 is not recommended for use in expansion joints or joints that move

Installation

1. Clean the concrete surface using a stiff brush or with high pressure air to remove any loose dirt and debris. Remove any exposed high or sharp points on the concrete surface, which may prevent the J-Seal® CJ-212 membrane from adhering fully to the surface or from being punctured. Any major holes or voids in the concrete surface should be filled with an application of a cement mortar in order to level the surface to the same level as the current concrete surface where the membrane is to be applied.

2. Apply one layer of CJ-200-15 Adhesive Primer onto a clean, dry, concrete surface, using a roller, brush or sprayer. Allow the CJ-200-15 Adhesive Primer to become tacky (approximate drying time is 10-20 minutes @ 30°C and depending upon the current ambient temperature) before installing the J-Seal® CJ-212 membrane. The dosage rate should be at approximately 5-7 m² per litre depending upon the concrete surface condition and porosity. A thorough, even and uniform coverage of the Primer/Adhesive should be applied.

3. To apply J-Seal® CJ-212 membrane to the joint, remove the release paper from the adhesive side of the membrane and apply the membrane onto the primed surface with the butyl section being applied directly on to the concrete primed surface. Continue around the joint by removing the release paper as the J-Seal® CJ-212 membrane is unrolled.

4. Press the entire surface of J-Seal® CJ-212 membrane firmly into place using a medium or hard surface roller or by hand, to ensure full bonding of the membrane is achieved and to make sure that all air pockets are removed. Around edges, corners and difficult locations that cannot be applied with a roller, use a firm hand or finger pressure to apply the membrane.

5. Where joining two sections, or where two ends meet together, provide an overlap of approximately 50mm and firmly press the overlapping strip onto the end of the underlying membrane to seal the joint.

Refer to the Product Brochure for Installation Photos.

Packaging & Dimension

• 100mm (W) x 15.24m (L)

• 150mm (W) x 15.24m (L)

• 200mm (W) x 15.24m (L)

• 225mm (W) x 15.24m (L)

• 300mm (W) x 15.24m (L)

• 600mm (W) x 15.24m (L)

• 900mm (W) x 15.24m (L)

• 1200mm (W) x 15.24m (L)

• 100mm (W) x 15.24m (L)

• 150mm (W) x 15.24m (L)

• 200mm (W) x 15.24m (L)

• 225mm (W) x 15.24m (L)

• 300mm (W) x 15.24m (L)

• 600mm (W) x 10.60m (L)

• 800mm (W) x 10.60m (L)

• 1200mm (W) x 8.00m (L)