Standing seam roof is a roofing profile which is quite old in the international roofing industry, but new in the Indian market. Standing seam is a non-piercing roof. The roofing profile is roll formed at site and it is seamed on the side laps; that’s why it is called standing seam roof.
Standing Seam Roof
Standing seam is normally used in the roof. The aluminium roofing can achieve various shapes and still the roof can be leak proof. It is also widely used for wall cladding because it give a neat look. Standing seam roof can be used for very low slope as low as 1.5℃.
Standing seam are available in various sizes/profiles like SS 2000, MR- 24,65/400 by Kingspan, 32/320 by Vijaynath etc. This standing seam is available mostly in Steel Galavalume by most of the vendors/manufactures and in aluminium by Kingspan. Standing seam was first introduced in the country by M/s Interarch building Products. In steel the thickness ranges from 0.60mm to 0.75mm and in Aluminium 0.9mm. In steel normally you use bare galvalume or SMP (Silicon Modified Polyster) PVDF 2 and in aluminium Stucco, PVDF 2 and 60µm durabond finish.
The Advantages of Standing Seam Roof
- Design: In aluminium, you can achieve various shapes and is suitable for any kind of difficult roof design. Because of the seam height being more for e.g., 50mm or 65mm high you can achieve minimum low slopes till 1.5 degree.
- Waterproofig: because of the high seam and seaming of the sheets at the side laps by special seaming machine, you can achieve water tightness on the roof.
- Sheet length: The specialty of standing seam is that the roll forming machine is always brought to site and the sheets are roll formed at the site and we can achieve maximum single length sheet. We have installed a single sheet length of 136mtr without any joints.
- Strength: on a standing seam roof, the minimum thickness of steel should be 0.6mm thick and that of aluminium should be 0.9mm, which adds to the strength of the sheet.
Challenges of Installation
Installation of standing seam roof is very simple, if you are technically trained. But for difficult shapes and design, to install, you need to have a good trained engineer with lot of experience.
Test to be Done to Have Sustainable Roof
The roof should be tested for:
- Wind load test calculation report,
- Thermal conductivity repot i.e. ‘U’ value calculation.
- Acoustic insulation i.e. STC report
- Water leakage test: on site water leakage test
using water jet spray
In India, lot of standing seam profiles are available, but none of them are tested & approved for wind uplift. Hence architects /consultants should specify sheets manufactures who have special wind uplift test done like Underwriters Laboratories Inc., British Board of Agreement, International Standard Organization and FM which clearly assures the client of a tested product from a reputed agency.