Are you on the verge of committing to a new flat roofing installation? At RW Roofing, we understand that finding peace of mind will help you in making a final decision. If, like many property owners in Fulwood and Woodseats, you have discovered the benefits of GRP flat roofs, you may want a few final reassurances about the installation process before scheduling a consultation with our roofing contractors.
This blog post takes a closer look at the basic structure of GRP roofs, demonstrating just how strong and robust your new installation will be on completion.
If you are ready to take the first step toward one of our GRP flat roofs, or if you would like to discuss roofing services or roof repairs, please call us on 0114 442 5571 or 07478 701183. We happily visit all locations in Fulwood, Woodseats and the surrounding Yorkshire and Derbyshire areas.
GRP Flat Roofs | The Fibreglass Structure
We begin your GRP fibreglass installation by stripping away the existing roof deck. This means we start the process with bare ceiling joists. On top of these, we attach BBA approved 18mm OSB3 decking. The wooden deck usually consists of 2ft x 8ft tongue-and-groove boards. Like all reputable roofing contractors, we check each individual board for faults.
Next, we lay insulation. Please note that this step only follows when fitting a warm roof to your Fulwood or Woodseats property. If you want to create a cold roof, we install the insulation in the rafters below the wooden deck. For these flat roofs, we leave an approximate 50mm gap between the top of the insulation and the wooden deck above.
Following the warm roof process, we then apply another OSB3 deck over the insulation. This provides the surface onto which we apply GRP fibreglass. We also fit specially formed edge trims at this point. This gives the sides of our flat roof repairs additional strength and a pleasing finish.
Fibreglass Matting and Resin
We also apply layers of catalysing resin and fibreglass matting onto one another. This combination bonds to the deck to create an incredibly hardwearing surface. For standard flat roofs with little to a zero amount of foot traffic, a 450csm (chop strand mat) suffices. If you plan to walk on the surface, however, we recommend a heavy duty 600csm mat.
We add the finishing layer to the roof of your Fulwood, Woodseats or Yorkshire property in the form of a topcoat to provide a watertight seal. This final layer is available in any RAL colour, ensuring your new surface blends in perfectly with the current exterior design theme.
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