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:
Sizes range from:
- 19mmm x 13mm up to 75mm x 25mm x 2 metre
Profiles: to suit Corrugated and Trimdek roofing profile x 2 metre lengths.
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
PROPERTY | DATA |
---|---|
Density | 30 Kg/m³ |
Identification Force Deflection (I.F.D.) 25% N 65% n | 200 + 22 360 + 27 |
Resilience % Min | 20 |
Tensile Strength Min Kpa | 172 |
Cell size (cell / inch) | 55 + 5 |
Elongation at break % of unstretched 2 | 200 % |
Tear strength minimum KN/M | 0.52 |
Compression set | 5.0 |
TECHNICAL DATA: BITUMEN IMPREG FOAM
PROPERTY | DATA |
---|---|
Density | 96 Kg/m³ |
- I.F. 25 | 194N |
Tensile Strength | 232kPa |
Elongation | 275 % |
Tear Resistance | 903 N/m |
Elongation after heat aging | 225 % |
Tear resistance after heat aging | 869 N/W |
Shrinkage | 0.94 % |
Combustibility test | Flame did not reach benchmark |