What width rafters do I require?-
If you are using 10mm twinwall polycarbonate you could use our P501 system with 50mm wide rafters. If you are using 16mm polycarbonate or more then the P261 or P306 system would be best. Rafters will be 60mm wide.
- What if I have purlins installed and not rafters?
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Depending on how far apart the purlins are placed it may be that our 226/7 system is suitable. Contact us if you require more help.
- You supply in 3m, 4m and 6m lengths, can I buy other bar lengths?
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As our aluminium bars are extruded, we can supply you with a special length of bar. However, minimum quantities may apply.
- What are the RAL colour references of the Twinfix bars?
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Twinfix supply glazing bars and accessories off the shelf in polyester powder coated satin finish White RAL9910 and Brown RAL8040. Mill finish is also available which means we can paint to any specified RAL or BS colour although a minimum quantity and a surcharge may be applicable. Not all Twinfix systems are available in mill, white and brown, see below.
- Which bars are supplied in these colours?
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The 226/261, 226/227 and 280/283 are all available in the mill finish, white and brown. The 306/261 and 500/501 are supplied in white and brown only and the 600 system in white only.
- Are Twinfix glazing bars only suitable for use with multiwall polycarbonate?
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No. You can also use them to glaze roofs with solid polycarbonate, glass or even double glazed units. However, when using glass or glazed units you should install a mechanical end plate instead of the usual Twinfix end plate. The only exception to the rule is our 600 system which is only suitable for use with multiwall polycarbonate.
- Can Twinfix glazing systems be used on flat roofs?
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No. Standard Twinfix glazing systems require a minimum pitch of 5°, whilst our Multi-Link-Panel system requires a 10° pitch or more. If you have a flat roof then you would be better looking at one of the Twinfix roof domes.
