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

Fibreglass roofs for extensions, garages and balconies across AL1 to AL4, laminated on site and timed around dry weather so the resin cures well.

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GRP Fibreglass Roofing in St Albans

Hard-Wearing GRP Fibreglass Roofing in St Albans

Many single-storey extensions have a flat roof that can be seen from the rooms above, so the finish matters. A GRP roof cures into one smooth layer with neat pre-formed trims, and the topcoat comes in a choice of colours. TNR Roofing Services lays fibreglass roofs on extensions, garages and balconies in St Albans.

We work across AL1 to AL4 from our base in Hemel Hempstead, for homes and commercial properties. Because the resin needs dry weather, we plan the laying around the forecast after your free survey, and any soft decking is replaced first so the finished roof sits on a firm base.

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Freshly coated grey GRP balcony floor beside patio doors

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What homeowners and businesses say about TNR Roofing Services, roofers covering St Albans 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 St Albans

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 St Albans

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

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Pricing

St Albans GRP Roofing Costs Explained

Your St Albans GRP quote depends on the points below, all checked during the 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

Our GRP Laminating Process in St Albans

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

How is a GRP roof actually laid?

Edge trims are fixed to a firm timber deck, then resin is rolled through a glass fibre mat until it is fully wetted out, with extra reinforcement at corners and upstands. Once cured, a coloured topcoat seals the surface.

Will bad weather hold up my job?

It can. The resin needs dry conditions to cure, and rain on an uncured roof can spoil the finish, so we book the laying for a dry spell and keep you informed if the forecast changes.

Can you replace an old flat roof with GRP?

Yes. We check the deck at the survey, replace any boards that are soft or moving, and lay the new fibreglass roof over a firm base.

Do I need consent from St Albans City and District Council?

Replacing the covering on an existing flat roof does not normally need planning permission. Listed buildings, homes in conservation areas and new balconies can be different, so check with the council before work starts.

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 St Albans, we carry out GRP fibreglass roofing in these towns:

Covering St Albans and Hertfordshire

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

Call 01727 789561
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