TNR Roofing Services
New grey GRP fibreglass flat roof beside a tiled roof, Hatfield
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GRP Fibreglass Roofing in Hatfield

Fibreglass dormer and extension roofs across AL9 and AL10, with moulded corners and trims forming the awkward details in GRP.

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GRP Fibreglass Roofing in Hatfield

Hard-Wearing GRP Fibreglass Roofing in Hatfield

Dormers are where flat roof coverings often struggle, with tight corners, cheeks and upstands that are hard to seal. GRP handles them well, because the corners and trims are moulded and the whole roof is laminated as one. TNR Roofing Services lays fibreglass on dormers and extensions in Hatfield, for homes and commercial properties.

We work across AL9 and AL10 from our Hemel Hempstead base. The resin needs dry weather to cure, so once you accept the quote we book the laying around the forecast, and our free survey checks the deck first so the cured roof has a firm base.

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Freshly coated grey GRP balcony floor beside patio doors

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Reviews from Customers across Hertfordshire

What homeowners and businesses say about TNR Roofing Services, roofers covering Hatfield and the rest of Hertfordshire.

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Finished GRP fibreglass balcony with a glossy grey topcoat

What's included

Our GRP Fibreglass Roofing Services in Hatfield

The main parts of the job, each listed in your quote.

  • New GRP flat roofs laminated in one piece, curing into a rigid layer with no laps or seams for water to find.
  • GRP balconies finished with a hard-wearing topcoat, with a textured, slip-resistant option for better grip underfoot.
  • Fibreglass dormer roofs, where moulded corners and trims keep awkward shapes watertight.
  • Extension and garage roofs finished with pre-formed GRP edge and drip trims for a neat, durable edge.
  • Soft or flexing timber decks replaced before laying, so the cured fibreglass sits on a firm base and resists cracking.
  • Cracks in existing GRP repaired by grinding back, re-laminating the damaged section and recoating it.
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More about our grp fibreglass roofing service

Free GRP Fibreglass Roofing Surveys in Hatfield

Free, no-obligation quotes for GRP fibreglass roofing in Hatfield and across Hertfordshire.

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Pricing

How a Hatfield GRP Roofing Quote Is Worked Out

Hatfield fibreglass roofing quotes reflect the following, each looked at during the free survey:

  • The size of the roof or balcony and how many corners, upstands and edges need forming
  • Whether the existing timber deck is firm enough to keep or needs replacing with new boards
  • Your topcoat colour and any textured, slip-resistant finish wanted on a balcony
  • The type and length of GRP edge trims, drip trims and gutter details
  • Access to the roof or balcony, including any scaffold needed on upper floors
GRP fibreglass balcony with black railings and a ladder

How it works

The Stages of a Hatfield GRP Roofing Job

What happens from your first call to the finished work.

  1. Free Survey and Deck Check

    We look at the deck, the drainage and the roof edges, check the boards for any flex, and note the trims and upstands involved, so the quote reflects the real job.

  2. Quote and Dry-Weather Booking

    You get a no-obligation quote. Once you go ahead, we book the laying for a dry spell, because the resin needs dry conditions to cure as it should.

  3. Decking, Trims and Laminating

    Failing boards are replaced with a firm new deck and the edge trims are fixed. Resin is then rolled through the glass fibre mat until it is fully wetted out, with extra reinforcement at corners and upstands.

  4. Topcoat and Final Review

    When the laminate has cured, the coloured topcoat goes on to seal the surface. Once it has hardened, we clear up, review the completed work with you and confirm everything has been done as agreed.

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FAQs

Frequently Asked Questions

Is GRP suitable for a dormer roof?

It is one of the best uses for it. Moulded corners and trims keep the awkward shapes of a dormer watertight, and there are no laps for water to find.

How long does a GRP roof last?

Laid on a sound deck, a GRP roof typically lasts 25 years or more. Keeping heavy impacts off the topcoat helps it stay watertight for longer.

Can you lay fibreglass in the winter?

The resin cures more slowly in the cold and needs dry conditions, so we plan winter jobs around the forecast. Rain or frost on an uncured roof can spoil the finish, which is why we wait for a dry spell.

Who handles planning questions in AL9 and AL10?

Welwyn Hatfield Borough Council. Re-covering a roof rarely needs consent, but listed buildings and properties in conservation areas can have rules on appearance, so it is worth asking first.

Still Have a Question?

If your question is not answered here, get in touch and we will discuss it with you.

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Areas we cover

GRP Fibreglass Roofing across Hertfordshire

Alongside Hatfield, we carry out GRP fibreglass roofing in these towns:

Covering Hatfield and Hertfordshire

GRP Fibreglass Roofing across Hatfield and the rest of Hertfordshire. Call to arrange a free survey and a quote.

Call 01707 229507
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