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FibreGlassDirect - Buy Fiberglass Supplies & Materials

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Fibreglass Roofing Guide

Welcome to our Fibreglass Roofing Guide written and developed here by the team at FibreGlassDirect. What is Fibreglass Roofing and is it the best choice for you as a roofing system? During the course of this guide, we hope to answer some of your questions and provide you with the information needed to make an informed decision before committing to a purchase. 

What is a Fibreglass Roof Constructed of?

A fibreglass roof is constructed of several layers. The base we would recommend is OSB3, T&G, 18mm. We are often asked if we would recommend Plywood and our answer is always no. In our experience, and based on the advice of Building Regulations, OSB3 provides the best support for your fibreglas roof. 

After applying the boards, the next layer is the Resin and Chopped Strand Matting (often referred to as the laminating layer) and finally, the Topcoat.

Calculating Fibreglass Roof Materials

How much material do you need? This will obviously depend on the size of the roof but we have made the process so much easier to understand with our Fibreglass Roof Kit Calculator. 

The Roof Kit calculator on FibreGlassDirect 'Flat Out' will calculate your roof in square metres and align it to our closest kit size. It also shows our customers our complete range of Fibreglass Roof Trims and where they are positioned on your roof. Just tell us how many metres you require of each and 'Flat Out' will do the rest of the work!

Calculate your Roofing Materials >>

Still unsure of what Trims you need?

We understand that you want to be completely sure before you buy. Our Fibreglass Roofing Trims are divided into a range of different categories. There are Drip Trims (for allowing water to flow into the gutters), Edge Trims (used to keep water on the roof and let it flow to the lowest point) as well as Wall Fillet Trims and Expansion Trims. 

Get the complete guide to Fibreglass Roof Trims >>

Installing a Fibreglass Roof

Installing a Fibreglass Roof is within the ability of anyone who is competent at DIY. As always, it is best to get advice or seek training before undergoing any builds or repairs. There is a lot of critical steps to ensuring that your roof is structurally sound and watertight. 

One of these critical steps is the mixing of catalyst and resin and topcoat. Temperature is a big consideration when using the correct amount of catalyst. When the weather is cold, you may need to increase the amount of catalyst and the reverse when the temperature is high. 

To find out everything you need to know about installing a fibreglass roof, check out our handy guidelines.