ResiRoof® Grp Fibreglass Roofing kit 450g Dark grey

Top Question's answered by our GRP Fibreglass Roof experts 

Q. What is a 450g Fibreglass Roofing Kit?

A. 450g is simply the grams per Square metre of matting Or 1.5 Ounces per Square metre. 

Q. Can I use the kits in the winter?

A. Yes down as low as 5degC We upgrade the kits with winter grade hardener completely free of charge 

Q. Can I walk on the Roof when it's complete?

A. GRP Roofs are rock solid when cured, Foof traffic is permitted for general maintenance such as cleaning or access to roof windows for example.

Q. What's included? 

A. The kit would include Resins, Topcoats, Hardeners (winter grade if it's below 5 degrees) Matting, Bandage for the trims, user guides via email.

Top tip! Add a kiln dried sand to the topcoat for a nonslip finish!


Our 450g GRP Roofing kits can be used for lots of different applications such as Garages, Valleys, Extensions, Bay windows or even Dormer roofs.

 We specify using 18mm OSB Tongue & Groove Boards, this eliminates the need to purchase additional bandage for the joints and Resin when using a square edge board. Resin for priming would be 0.3kg per m2.

Note* Ply will require sanding with 40-grade sandpaper and additional Resin for sealing and priming for secondary bonding to be effective.

This Fibreglass system is easy to use and will outlast many other flat roofing systems on the market.

How to fibreglass a roof guides can be found in the how to section of our website. 

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  1. TOP SELLERS!
     4.4m² 450g ResiRoof® Fibreglass Roof Kit
    4.4m² 450g ResiRoof® Fibreglass Roof Kit
    £86.81 £72.34

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
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  2. TOP SELLERS!
    10m² 450g ResiRoof® Fibreglass Roof Kit
    10m² 450g ResiRoof® Fibreglass Roof Kit
    £137.10 £114.25

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
    See More
  3. TOP SELLERS!
    15m² 450g ResiRoof® Fibreglass Roof Kit
    15m² 450g ResiRoof® Fibreglass Roof Kit
    £171.94 £143.28

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
    See More
  4. TOP SELLERS!
    20m² 450g ResiRoof® Fibreglass Roof Kit
    20m² 450g ResiRoof® Fibreglass Roof Kit
    £220.12 £183.43

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
    See More
  5. TOP SELLERS!
    25m² 450g ResiRoof® Fibreglass Roof Kit
    25m² 450g ResiRoof® Fibreglass Roof Kit
    £247.67 £206.39

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
    See More
  6. TOP SELLERS!
    30m² 450g ResiRoof® Fibreglass Roof Kit
    30m² 450g ResiRoof® Fibreglass Roof Kit
    £307.87 £256.56

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
    See More
  7. TOP SELLERS!
    35m² 450g ResiRoof® Fibreglass Roof Kit
    35m² 450g ResiRoof® Fibreglass Roof Kit
    £357.62 £298.02

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
    See More
  8. TOP SELLERS!
    40m² 450g ResiRoof® Fibreglass Roof Kit
    40m² 450g ResiRoof® Fibreglass Roof Kit
    £374.63 £312.19

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
    See More
  9. TOP SELLERS!
    45m² 450g ResiRoof® Fibreglass Roof Kit
    45m² 450g ResiRoof® Fibreglass Roof Kit
    £424.28 £353.57

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
    See More
  10. TOP SELLERS!
    45m² 450g ResiRoof® Fibreglass Roof Kit
    50m² 450g ResiRoof® Fibreglass Roof Kit
    £460.82 £384.02

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
    See More
  11. TOP SELLERS!
    45m² 450g ResiRoof® Fibreglass Roof Kit
    60m² 450g ResiRoof® Fibreglass Roof Kit
    £539.12 £449.27

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
    See More
  12. TOP SELLERS!
    45m² 450g ResiRoof® Fibreglass Roof Kit
    70m² 450g ResiRoof® Fibreglass Roof Kit
    £655.70 £546.42

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
    See More
  13. TOP SELLERS!
    45m² 450g ResiRoof® Fibreglass Roof Kit
    80m² 450g ResiRoof® Fibreglass Roof Kit
    £727.31 £606.09

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
    See More
  14. TOP SELLERS!
    100m² 450g ResiRoof® Fibreglass Roof Kit
    100m² 450g ResiRoof® Fibreglass Roof Kit
    £889.30 £741.08

    ResiRoof saver 10% off

    • 450g/m² Fibreglass chopped strand matting
    • 20-year material warranty
    See More

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