POLYURETHANE JOINT SEALANT

Description

CORKJOINT J-Seal® PU1 is a one-component, gun grade, polyurethane joint sealant with high bond strength, which cures on absorption of atmospheric moisture to form a firm and flexible seal for moderate movement joints, construction joints and control joints in concrete and masonry structures. J-Seal® PU1 can be used in both horizontal and vertical applications.

Advantages

• Fast cure, easy to apply, one component sealant. No mixing required

• High strength performance with excellent elasticity and flexibility

• Superior weatherability and no discolouration

• Highly resilient with excellent recovery characteristics

• Trafficable – Footpaths, stairs, pavements and floor slabs

• Movement capability : 100% extension and 50% compression

• Joint application width : 50mm maximum

• Excellent adhesion to most building substrates

• Stainability – Non-staining to most types of substrates: Low Volatile Organic Compound (VOC)

• Able to be painted over by most types of paints, after one day of application

• Tested and conforms to ASTM C-920 : 2018 standard specification for elastomeric joint sealants

Application

• Construction and expansion joints in concrete slabs and walls

• Precast concrete joints

• Brick and masonry expansion joints

• Perimeter caulking (windows, doors, aluminium frames)

• Structural glazing & curtain wall joints

• Parapet wall joints, floor and pavement joints

• Repairing of concrete cracks (refer to minimum joint width requirements)

• Bathroom and kitchen installations

Limitation

J-Seal® PU1 is not recommended for:

• Overhead joints

• Movement joints having Movement Accomodation Factor (MAF) > 50%

• Damp and contaminated surfaces

• Asphalt pavements or any material containing bitumen

• Over painting with enamel or rigid paints (paint compatibility with sealant shall be checked prior to painting)

• External application in white/off white will result in yellowing on exposure to UV

• Use in chlorinated water such as swimming pools & spas

• Immersion in water and salt water

• Applied in joints wider than 50mm

• Applied in joints less than 5mm in width and depth

• Use for glazing applications

• High and/or sharp point load

Colour

• Grey

Packaging

• 600 ml / sausage (20 sausage / box)