Seam-Loc Curved Roofing
Aluseam and Seam-Loc Curved Roofing
The Tegral Alu-Seam® standing seam roofing system allows for both concave and convex curving with the benefit of secret fixing.
Maximum sheet lengths
- 12m without additional handling or carriage charge.
- 26m subject to feasibility of site access and carriage and handling costs.
Longer lengths than 26m are possible but these are subject to direct enquiry.
This information may be updated so please call Tegral Technical Services for information.
Minimum roof pitch
- 11/2º - continuous sheet ridge to eaves.
- 11/2º - continuous sheet eaves to eaves. (curved roof).
- 3º - sheet with end-lap*
- 3º - sheet with penetrations*
* unless welded
Material specification
Alu-Seam®
0.9mm thick alloy AA3004 H34.
0.2% min tensile proof stress 200N/mm2.
Minimum ultimate tensile strength 225N/mm2.
Modulus of elasticity 70kN/mm2.
Self-weight of Alu-Seam(r) profile 3.75kg/m2.
Seam-loc
Colorcoat HPS 200 steel. Galvalloy substrate to BS EN 10326 : 2004 S220GD+ZA265, nominal thickness 0.7mm, with Corus standard colour Colorcoat finish to the external face and light grey high performance polyester to the reverse.
Design minimum yield stress 220 N/mm2.
Self-weight of Seam-loc profile 8.45kg/m2.
The minimum roof pitch must be achieved at sheet ends. When determining the roof pitch, the loading and deflection of the sheet must be taken into account.
