UPVC Roofing Supplies and Their Requirements for Roof Purlins

When it comes to choosing the best roofing sheet material, UPVC (Unplasticised Polyvinyl Chloride) roofing supplies are gaining popularity for their durability and low maintenance. However, when installing plastic tiles or ASA (Acrylonitrile Styrene Acrylate) roof tiles, there are specific requirements regarding the roof purlins that need to be considered to ensure structural integrity.

Firstly, the spacing between roof purlins is crucial. For plastic tiles, it’s generally recommended that purlins be spaced no more than 600mm apart to effectively support the weight of the tiles without causing sagging. The thickness of the purlins should also be adequate, typically requiring a minimum of 50mm x 50mm timber or steel sections, depending on local building regulations.

Additionally, the purlins should be level and uniformly installed to provide a stable foundation for the roofing material. This uniformity helps in preventing stress points that could lead to cracking or breaking of the roofing sheets over time. It’s also advisable to use purlins treated against rot and corrosion to enhance longevity.

In summary, when opting for UPVC or ASA roof tiles, paying attention to purlin requirements is essential for ensuring a robust and long-lasting roofing system.