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GRP Roofing

GRP Roofing is also known as Glass Reinforced Polyester which is a composite material that is used as a roofing system. A wide range of products are sold online and in branch from: roofing resin, roofing topcoats, flat flashing to concrete primer, mouldings, corners etc. 

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  • Restec Flexitec Detailer 5kg (162011)

    The purpose of this product is to deliver a coat, sealing in areas that are hard to reach, require levelling or need minor repairs completed.
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    Restec Flexitec Primer 5kg (158105)

    Flexitec 2020 Primer is a rapid-curing, cold applied liquid that is used to prime roof surfaces before the application of the Flexitec 2020 System.
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    Restec Infrared Thermometer (109099)

    This product can identify moisture in a substrate, which cannot be present when installing either roofing system, hence why it’s essential.
  • 122067_Restec-Metal-Detailing-Primer-6x-250ml.png

    Restec Metal Detailing Primer 6 x 250ml (122067)

    Flexitec metal delating primer is used when the substrate of both the Flexitec 2020 & Flexitec platinum system is being installed on a metal compound. This primer comes in a 250ml metal tin with a sealed plastic cap to stop the flammable liquid from...
  • 109195_10ltr-Restec-Mixing-Bucket-%5BPrinted-%26-Calibrated%5D.png

    Restec Mixing Bucket Printed & Calibrated 10ltr (109195)

    A fully printed calibrated bucket for making mixes up to 10 litres. Suitable for all Restec liquid and GRP products. The Flexitec bucket has a handy guide for an accurate ratio of our primer, resin & hardener.
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    Restec Powder Hardener 1kg (102013)

    Flexitec 2020 Powder Hardener is added to Flexitec 2020 Resin and Primer to begin the curing process. Hardener is added at between 2 – 4%, which is means between 2 to 4 scoops of powder hardener per litre of product.
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    Restec SP Primer 1ltr (122006)

    Flexitec 2020 SP Primer is used to Prime Single-Ply roof surfaces such as EPDM, TPO and PVC. To be used prior to application of the Resin. A single component Primer to be used when the installation is to take place over an existing EPDM or TPO membrane.
  • 104004%20Taping%20Mat%20%28Pack%20of%206%20Rolls%29.png

    Restec Taping Mat 6pk (104004)

    Taping mat for taping OSB joints and trim joints.
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    Restec Taping Mat Single Roll (104005)

    Flexitec Taping Mat is a form of fibreglass bandage made up of 25-50mm fibreglass strands bonded together with a styrene-soluble binder.
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    Roofcell Basecoat 10kg (RESROOFCELL10)

    Roofcell is an easy to use polyester resin basecoat for GRP roofing, which forms a non-porous, tough, flexible seal. The basecoat is used on existing surfaces such as felt and old GRP roofs, in circumstances where the existing deck cannot be removed...
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    Roofcell Topcoat 10kg (TOPROOFCELL10)

    Topcoat providing an exceptional finish to use in conjunction with the RoofCell GRP roofing system. Suited to larger areas for new projects as well as refurbishment applications. It carries all of the benefits of GRP with the convenience of direct-lay...
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    Roofcell Topcoat 20kg (TOPROOFCELL20)

    Topcoat providing an exceptional finish to use in conjunction with the RoofCell GRP roofing system. Suited to larger areas for new projects as well as refurbishment applications. It carries all of the benefits of GRP with the convenience of direct-lay...
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    Seam Fastening Plates (300600.CB)

    The ClassicBond 50mm Russ Seam Fastening Plate is designed to seal Russ tape to the material below it and is a vital part of EPDM roofing. The plates are secured at set intervals and are coated with primer and adhesive before the membrane is placed over...
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    Slide & Lock Over Fascia Vent 25mm (ETEV/OFV/25)

    Easy- Trim slide and lock over fascia vents are designed to allow an air stream into the roof void between the felt and fascia board. This product assists with air circulation preventing condensation which will in time cause damage including rot and...
  • ClassicBond%20Sprayable%20Bonding%20Adhesive%2014L%20-%20White%20Background.jpg.jpeg

    SPB Spray Contact Adhesive 14L (10682115.CB)

    An alternative to standard bonding adhesive for membrane attachment to upstands and detailing. SPB adhesive is a spray applied, high-strength adhesive. Suitable for a range of surfaces e.g. timber, brickwork, metal, PVC & concrete.
  • SPB%20Spray%20Gun.jpg.jpeg

    SPB Spray Gun (523006.CB)

    Introducing the ClassicBond EPDM Sprayable Contact Adhesive Spray Handheld Gun – Your Ultimate Partner for Seamless Bonding!
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    SPB Spray Gun Tip (523007.CB)

    ClassicBond SPB Spray Gun Tip is perfect for bonding ClassicBond EPDM membrane to horizontal and vertical surfaces. Suitable for a range of surfaces e.g. timber, brickwork, metal, PVC and concrete.
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    SPB Spray Hose 3m (523004.CB)

    When it comes to roofing, precision and reliability are non-negotiable. A game-changer in the world of roofing materials. Crafted with meticulous attention to detail and built to last, this hose is the perfect companion for ClassicBond SPB Spray Adhesive.
  • Steel%20Roller%20%281%29.jpg.jpeg

    Steel Hand Roller 50mm (300013.CB)

    This 50mm Steel Hand Roller is a roofing tool used for seam rolling in metal roofing and ensuring adhesion in flat roofing applications.
  • Timloc%20Building%20Products%20-%2099154%20Ambi-Verge%20Eaves%20Starter%20-%20Black.png

    Timloc Ambi-Verge Eaves Starter Black (99154)

    Universal dry fix verge system for profiled roof tiles. A robust, attractive and weather resistant alternative to wet mortar bedding.
  • Timloc%20Building%20Products%20-%2099153%20Ambi-Verge%20Eaves%20Starter%20-%20Grey.png

    Timloc Ambi-Verge Eaves Starter Kit Grey (99153)

    Universal dry fix verge system for profiled roof tiles. A robust, attractive and weather resistant alternative to wet mortar bedding.
  • Timloc%20Building%20Products%20-%2099156%20Ambi-Verge%20Eaves%20Starter%20-%20Terracotta.png

    Timloc Ambi-Verge Eaves Starter Terracotta (99156)

    Universal dry fix verge system for profiled roof tiles. A robust, attractive and weather resistant alternative to wet mortar bedding.
  • Timloc%20Building%20Products%20-%2099143%20Ambi-Verge%20universal%20dry%20-%20Black.png

    Timloc Ambi-Verge Unit Black (99143)

    Timloc Dry Verge Left Hand Units from Timloc's Dry Verge System for Profiled Tiles is suitable for pitches from 15° to 55°. Made from UV-protected polymer for a durable, long-lasting solution. Available in different colours, it is designed to match...
  • Timloc%20Building%20Products%20-%2099141%20Ambi-Verge%20universal%20dry%20-%20Grey.png

    Timloc Ambi-Verge Unit Grey (99141)

    Universal dry fix verge system for profiled roof tiles. A robust, attractive and weather resistant alternative to wet mortar bedding. Independently tested and compliant with BS8612 and helps to meet BS5534 code of practice for slating and tiling.

GRP, also known as Fibreglass roofing, is one of the most reliable and cost-effective roofing options on the market right now. Because of its waterproof material, and it’s no maintenance requirements, it makes it a perfect choice for your home. The hard-wearing nature of GRP will last for over 30 years, making it a dependable roofing option as well.

What is GRP roofing?

GRP roofing is a material made from polyester resin, which is reinforced by mat glass fibres to form a GRP laminate. Because of this, it is a durable, lightweight, and flexible material capable of being moulded to any shape. This is one of the main reasons why Fibreglass is becoming the number one choice for flat roofing.

It can also be known as GRP fibreglass roofing, and is a material made from polyester resin which is reinforced by chopped strand mat glass fibres, forming a GRP laminate.

A GRP roof is typically very easy to install, but we also offer fibreglass roofing kits if needed which will provide you with all the materials you require to construct an incredibly strong and durable flat roof. One of the most well-known roofing resins is Cure It roofing, which has a specially formulated roofing resin and topcoat.

How does it work?

GRP flat roofing systems combine several materials such as topseal resin, fibreglass matting, and durable topcoat to not only create a roof that’s impact resistant and strong, but also attractive and aesthetically pleasing. It first starts with bare ceiling joists and the attachment of OSB3 decking and is then specially fitted with GRP roofing trims to the edges, to form a durable laminate GRP flat roof.

Because of how little heat is used during the installation of fibreglass roofing, it also makes it one of the safest installation processes.

For expert advice and guidance on the best GRP roofing for your property, please contact your friendly local Howarth branch.

Frequently Asked Questions

How much does grp roofing cost?
The average fibreglass flat roof cost in the UK is £90 per m2.