BiYseal Bitumen Imp Foam

Description

Biyseal Polyurethane Impregnated Foam is a bitumen impregnated, light weight flexible foam, with a nominal density of 35kg per m³, manufactured to AS2282-79. Biyseal is also available impregnated with an acrylic solution for use when ultra-violet light resistance is required. Biyseal is supplied in 7.62m coils, 2m lengths and Profiles to suit various roof decking.

USES:

Biyseal is suited as a weather resistant seal for numerous applications in both building and construction and, industrial either on its own or in conjunction with a sealant depending on the application. Typical applications include:

• Dust/vermin proofing of metal wall or roof cladding
• Vertical expansion joints in precase concrete, brick and block work
• Jointing between walls and windows
• Profiled Biyseal for sealing various roof and wall decking
• Joint sealing of logs in timber homes

HOW USED:

The surface which Biyseal is to be applied to should be clean, sound and clear of all loose materials. Size to be used is dependent on application: – Weather resistant joints – foam width equal to 5 times joint opening – Expansion joints – foam width equal to 3-4 times joint opening – Joint proofing – allow for a foam width equal to twice the joint opening

SIZES:

• 7.6m coils & 2 metre lengths:
• 19mmm x 13mm up to 100mm x 25mm

Profiles: to suit roof sheeting width

HOW TO SPECIFY:

All areas to be sealed must be filled with Biyseal Polyurethane Impregnated Foam strictly in accordance with manufacturers instructions. when all compression forces are removed is 90% in the first cycle.

PERFORMANCE DATA:

Compression:

• Compression by 20% resistant to dust, draughts and tolerant to vibration.
• Compression by 50% resistant to fog, light dampness, slight flowing water and tolerant to reverberation.
• Compression by 70% resistant to flowing water and dust storms.
• Compression by 75% resistant to standing water.

Aging:

Accelerated aging testing – Biyseal, when compressed can have a working life of up to 20 years, depending on application. Biyseal does not extrude when compressed.

Recovery:

Will sustain innumerable cycles of expansion and contraction without showing signs of fatigue or loss of recovery characteristics. The material can be compressed as much as 90% without rupture and will maintain its full recovery properties. The extent of elastic recovery when all compression forces are removed, is 98% in the first cycle.

Adhesion:

Biyseal when compressed, always exerts an outward pressure against the joint surface. Its performance is not dependent on adhesion, but it does adhere to the joint sides.

TECHNICAL DATA: UNIMPREGNATED FOAM

TECHNICAL DATA: BITUMEN IMPREG FOAM