What is polypropylene and where is it used?

PolypropylenePolypropylene is a thermoplastic polymer – an incredibly versatile plastic that can be used in a variety of settings. The material is made through the polymerisation of propene, or propylene, which is the most commercially versatile thermoplastic polymer.

Polypropylene has good chemical resistance, is tough and durable, is the lowest density of commodity plastics and is resistant to fatigue. It can be moulded and extruded. Its properties suit its use for products as diverse as medical devices to carpets and clothing.

Why is polypropylene ideal for roofing products?

Polypropylene is an excellent roofing material, because of its intrinsic characteristics. It is thermally stabilised, UV-resistant, acid rain-resistant and has a non-reflective surface. UV stability prevents colour fade and brittleness and it is lightweight and flexible.

The material has a high melting point and does not deteriorate in the presence of bacteria. It is also easy to modify the composition of the finished products to best suit their application through the use of special additives, and to add different coloured pigments for consistent appearance; this enables manufacturers like Hambleside Danelaw to supply the appropriate colours to suit the products. Being lightweight and flexible, polypropylene is an ideal material for roofing products.

Reasons why you should use polypropylene roofing products

  • Thermally stable
  • UV stable
  • Durable
  • Tough material
  • Resistant to colour fade
  • Flexible
  • Resilient
  • Minimal environmental impact

Uses of polypropylene in pitched roofing

Polypropylene is used across the construction industry for roofing and building products. It is used in roofing sheets and insulation as well as being moulded to form roofing products. It is the material of choice for our Interlocking Dry Verge, tile roof vents, slate roof vents and many other roofing products.

Stand alone photo of the Polypropylene Marley Double Roman Type Tile Vent
Stand alone photo of the Polypropylene Flush Fitting Slate Roof Vent
In situ photo of the Interlocking Dry Verge System for Tiles
Stand alone photo of the Polyproptyene Circular Soffit Vents
Stand alone photo of the telescopic underfloor vent
Stand alone photo of the universal weep vent in multiple colours

Environmental benefits

Polypropylene’s non-toxic qualities make it suitable for everyday use, including in grey water harvesting systems, while keeping its environmental impact to a minimum.

It is fully recyclable at the end of its service life and benefits from having a low density and a lower volume of absolute waste during production.

As a responsible manufacturer, we continually strive to reduce our waste and increase our environmental qualities. We take sustainability very seriously, and work by the British standard associated with environmental standards: BS EN ISO 14001:2015 Environmental management systems.

Why not take a look at our pitched roof ventilation product range, manufactured from polypropylene?