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When it comes to covering a flat roof, there are several materials to choose from, making the choice a complex one!
Among these options, PVC membranes are very popular for industrial roofs, thanks to their many advantages.
PVC membrane roofs
Before we go any further, what does the acronym “PVC” stand for?
It refers to polyvinyl chloride, a thermoplastic polymer that makes up a tough synthetic membrane.
PVC roofing is a membrane made up of two consolidated layers of PVC.
PVC cladding is used for flat or low-slope roofs: it is therefore mainly used on commercial, industrial and institutional buildings.
However, flat roofs are also compatible: it’s a perfect solution for ensuring waterproofing.
What’s more, this recyclable material is an excellent alternative to less environmentally-friendly products.
The advantages of PVC membrane for your roof
When correctly installed, PVC membrane roofing is totally waterproof.
For your roof, this eliminates any risk of moisture or leaks that could damage your roof structures.
What’s more, this roofing system is designed to withstand extreme weather conditions.
Neither ultraviolet rays nor frost affect its structure, so your roof is protected for the long term.
Whether on plywood, wood or concrete, the underlying materials remain intact and contribute to prolonged durability; the PVC membrane itself can last up to 30 years.
From a visual standpoint, PVC membranes are attractive for their contemporary design and diverse color options (usually offered in white, gray or beige).
Installing PVC membrane on a roof
PVC membrane installation is usually efficient and easy.
However, it is installed in a single layer, so it is necessary to remove any elements or structures on the roof before installation.
Mechanically anchored and then fused by heating, it is applied directly to plywood or concrete.
If you’re planning a wooden roof deck, you’ll need to install plywood before laying the PVC membrane.
It is advisable to consult a roofing specialist: this professional will ensure that installation complies with standards, guaranteeing impeccable watertightness.
Laying technique
First, make sure the surface is clean, smooth and free of irregularities.
Next, the membrane is glued to the entire surface to be covered, including the sides of the roof.
Adhesive is applied first, followed by heat welding to firmly secure the membrane to the roof.
In reality, the installation of PVC membranes is similar to that of TPO membranes, using mechanical induction fastening.
Two methods are possible: either a RhinoBond induction welding system, or a fully adhesive fastening.
How do I maintain the membrane?
It is advisable to examine the PVC membrane at least once a year, preferably before or after the cold season.
This can be done by visual inspection or thermography, followed by repairs if necessary.
Maintenance essentially involves cleaning out drains and residues: a simple task performed with a product certified by the manufacturer.
What’s more, the membrane’s surface dries quickly and offers anti-slip properties, making it very safe to maintain.
PVC membrane waterproofing
The composition of the PVC membrane includes a trilaminate structure of vinyl chloride and polymer, ensuring complete waterproofing.
It is ideally designed to cope with various weather conditions such as rain, snow and slush.
It stands up to mildew, chemicals and fire.
With its impeccable waterproofing, PVC membrane effectively protects your roof from the elements.
Cost of a PVC roof
Opting for a PVC roofing membrane is economically advantageous, not least because of its longevity.
The price will of course depend on a number of parameters, such as the size of the surface to be covered, the thickness of the membrane, and the number of additional elements on the roof.
