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5.0 from 106 Google reviews

Rockdoor Trusted Installer since 2015

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Over 3,000 doors fitted since 2010

GRP composite doors, the lower-priced of our two ranges

GRP composite front and back doors, supplied and fitted by Jim and Josh. A strong, weatherproof door at a price that suits most homes. No salespeople, no subcontractors.

From £1,500 GRP, fittedIncluding VAT10-year guarantee

GRP composite front door in Agate Grey with two side panels and Satin glass, fitted in Belper
5.0 out of 5106 Google reviews

Trusted, accredited and accountable

Rockdoor Trusted Installer

Certass registered

QANW certified

Certified Competent

Featured by Rockdoor

Installation of the Month

Read Rockdoor’s article

What these mean

Rockdoor Trusted Installer

A status Rockdoor only grants to installers who meet its standards for expertise and customer service.

Certass registered

Where Building Regulations say a door must be registered, we register it and you get a compliance certificate.

QANW certified

An insurance-backed guarantee on every installation.

Certified Competent

Assessed to make sure we meet the required standards, with a public profile you can check.

GRP composite doors

One range, with the same survey, the same fitters and the same all-inclusive price as every door we fit.

GRP front doors, back doors and doors with sidelights

GRP stands for glass-reinforced plastic, the tough woodgrain skin on both faces of the door. Under it sit an insulating foam core and a reinforced frame, so the door won’t rot like timber, flex like uPVC or need repainting. Our GRP doors are made by HomeFrame, part of the GAP group, which has made entrance doors in the UK for over 30 years.

GRP composite front door in White with decorative glass, fitted in Belper

From £1,500 fitted

GRP front doors

Panelled, grooved or flat, with plain, decorative or privacy glass. Choose the style and colour that suit your house and we’ll show you the design before you commit.

  • Over 80 styles in three collections: Classic, Contemporary and Modern
  • 30 colours outside, white inside
  • Lever, pad or bar handles in nine finishes
  • 5-point locking and a 3-star anti-snap cylinder

See composite front doors

White GRP composite door opening outwards, fitted to a garage in Derby

From £1,500 fitted

GRP back doors

Solid for privacy, half-glazed to brighten a kitchen, or with a small flag window. A strong, low-maintenance door for the back of your home.

  • Solid, half-glazed and flag-window styles
  • Opens in or out, to suit your doorway
  • Laminated glass available for extra protection
  • A low threshold for easy access

See composite back doors

GRP composite front door in Anthracite Grey with a side panel and a toplight, fitted in Chellaston, Derby

Each panel adds £300–£500

GRP doors with sidelights and toplights

Side panels and a toplight bring more light into a hallway and suit wider openings. They are made to match your door.

  • Single or double sidelights
  • A toplight, or both together
  • Clear, obscured or decorative glass
  • In the same colour as your door

See what each option adds

Every GRP door comes with a 10-year manufacturer’s guarantee. Want the most secure door we fit? See Rockdoor composite doors. Weighing GRP against Rockdoor? Send us a photo of your door and we’ll price one of each.

How a GRP composite door is built

Woodgrain skin

A 2mm skin on both faces, moulded with a real timber grain. It won’t fade, crack or peel, and a wipe with soapy water keeps it clean.

Foam core

A high-density polyurethane core insulates the door. HomeFrame quote U-values from 1.0 W/m²K for solid-panel styles.

Engineered sub-frame

Laminated veneer lumber, an engineered timber, sits inside the 44mm door. It stays straighter than a plain timber frame.

Rehau frame

A 72mm Rehau frame with steel box reinforcement. Rockdoor uses Rehau frames too.

Options

Choose your GRP door’s colour, glass, frame and handles

Everything is chosen at the design stage, so the price in your quote is the final price.

StyleIn your quote

Three collections: Classic for traditional panelled designs, Contemporary for modern vertical grooves, and Modern for clean lines with sleek glass. Over 80 styles in all, each made to measure.

Colour and frameIn your quote

Choose from 30 colours for the outside of the door, from Anthracite Grey, Agate Grey and Black to Chartwell Green, Duck Egg Blue and Canary Yellow. The inside is white. The outer frame comes in White, Anthracite Grey, Black, Rosewood or Light Oak.

Glass and privacyIn your quote

Decorative, obscured and privacy glass lets the light in and keeps your hallway private from the street. Prefer no glass? A solid panel is an option.

Sidelights and toplights£300–£500per panel

Single or double sidelights, a toplight, or both. They make the most of a wide opening.

Handles and hardwareIn your quote

Lever handles, pad handles, or contemporary bar handles in 600mm and 1200mm lengths, in chrome, graphite, gold, black, white, stainless, brass, nickel or antique black.

SecurityStandardon every door

A 5-point locking system and a 3-star anti-snap cylinder on every door. Laminated glass holds together on impact and is available if you want more protection.

Which cylinder lock is best? · Laminated glass explained

Where a cost is shown, it is what that option adds to the starting price. Everything else is priced in your quote before you commit.

GRP composite door colour chart showing sixteen of the 30 colours with their names, including Black, Anthracite Grey, Agate Grey, Chartwell Green, Canary Yellow and Cream
The GRP colour chart. Open it full size to read every colour name. Screens show colour a little differently from daylight.

What’s included

One price, in writing, before you commit.

What’s included in the price of a fitted GRP composite door

  • Your GRP door, made to measure, with its Rehau frame
  • Supply and fitting by Jim and Josh, never a subcontractor
  • VAT, and removal and disposal of your old door
  • A threshold, weather seals and handles in your chosen finish
  • Your hallway and floors protected, and cleaned up before we leave
  • Certass registration and a compliance certificate, if your door has to be registered under Building Regulations
  • A 10-year manufacturer’s guarantee
  • Fitting doors since 2010 and a Rockdoor Trusted Installer since 2015: over 3,000 doors, each surveyed and fitted by us

Already have a fitter? We can also supply GRP composite doors for delivery across mainland UK. Ask for a supply-only quote.

Fitted prices from

  • GRP composite door£1,500
  • Rockdoor composite door£1,900

Fitted, including VAT. Most GRP doors we fit cost £1,500–£1,850 once colour, glass and hardware are chosen, and a sidelight or toplight adds £300–£500 a panel.

How much does a composite door cost?

The price we quote is the price you pay.

How it works

Around seven weeks from order to fitting.

From two photos to a fitted GRP door

Day 1

Send two photos

Your current door, inside and out, and an idea of the style and colour you like. No home visit needed to quote.

Within 24 hours

Your design and exact price

A design of your new GRP door and an all-inclusive price. No sales calls, no obligation.

Within a week

Survey

Happy to go ahead? A £100 survey deposit, which comes off your final balance. We survey when it suits you, evenings and weekends included.

3 to 4 weeks

HomeFrame make your door

Your GRP door is made to measure, to the sizes we took at the survey.

2 to 3 weeks later

Fitting day

That’s how far ahead our diary is booked. We protect your hallway, take out the old door, fit the new one, test the lock and handle, clean up and show you how it all works.

Start with step 1: the form at the foot of the page takes your photos.

Recent installations

GRP doors we’ve fitted in the last few years, from Belper to Hathern.

GRP composite doors we’ve fitted

Reviews

GRP door fitter reviews from Midlands homeowners

5.0 out of 5

From 106 Google reviews

See all our reviews
  • Rated 5 out of 5

    I could not be happier with my new front door, I absolutely love it. Jim and Josh were fantastic to deal with throughout the process. Responsive to messages when I had queries, everything was easy. On the day of the install both Josh and Jim were organised and tidy. They had great attention to detail and I now have a beautifully fitted, beautiful new door that keeps drafts out and reduces traffic noise and feels very secure.

    Read moreShow less

    Cat · · Google review
  • Rated 5 out of 5

    Had big problems with my 15 year old front composit door . It had dropped, Hinge screws wouldn’t tighten , couldn’t get it lock properly. srugling to open and shut . not used it for 6 weeks . Been looking at getting a replacement, when i came across jim . What a knight in shining Armour… One phone call , arranged a date to come over . well that day was today ! went above and beyond, proper nice gents . come with all the parts to fix it ..& refurbished were it needed . words can’t express how happy i am . i’m going to replace my old back door soon to a newer design & jim definitely will doing it .. once again jim a very big thank you ( mick ) .

    Read moreShow less

    Michael M. · · Google review

Common questions

Tap a question to see the answer.

Still got a question?

0800 690 6870

enquiries@verysecuredoors.co.uk

We do not provide quotes over the phone.

GRP composite door questions, answered

What does GRP stand for on a composite door?

GRP stands for glass-reinforced plastic. It is the tough, weatherproof skin on both faces of the door, moulded with a woodgrain texture, so a GRP door is a type of composite door.

How much does a GRP composite door cost?

GRP composite doors start from £1,500 fully fitted, including VAT and removal of your old door. Most of the GRP doors we fit cost £1,500–£1,850 once colour, glass and handles are chosen, and the price we quote is the price you pay. See our composite door prices guide.

What is a GRP composite door made from?

A 44mm door with a 2mm woodgrain GRP skin on each face, a high-density polyurethane foam core, an engineered timber sub-frame and PVC edging. It hangs in a Rehau frame with steel box reinforcement. Our composite doors page explains how the layers work together.

Are GRP composite doors secure?

Yes. Every GRP door we fit has a 5-point locking system and a 3-star anti-snap cylinder, and the thick door is harder to flex or lever open than a uPVC panel door. Our most secure door is Rockdoor, and our cylinder lock guide explains what to look for.

What’s the difference between GRP and Rockdoor?

Rockdoor has a thicker 50mm door, 3mm skins, an aluminium-reinforced frame and S-Glaze glass sealed into the door, so it is the most secure door we fit. GRP costs less, from £1,500 against £1,900, and is still a big step up from uPVC. How Rockdoor compares with other premium brands is in our Rockdoor vs Solidor vs Endurance guide.

Can I use a GRP door as a back door?

Yes. GRP works as well at the back as at the front, in solid, half-glazed or flag-window styles, and laminated glass is available if you want extra protection. See our composite back doors and our laminated glass guide.

Do GRP composite doors come with a guarantee?

Yes, a 10-year manufacturer’s guarantee. Our installations are QANW certified, which gives you an insurance-backed guarantee, and if your door has to be registered under Building Regulations, we register it with Certass and you get a compliance certificate.

How long does it take to get a GRP door fitted?

GRP doors take around seven weeks from order to fitting. The quote comes within 24 hours, the survey when it suits you, and then HomeFrame make your door to measure.

Who makes your GRP composite doors?

HomeFrame, part of the GAP group, which has made entrance doors in the UK for over 30 years. We chose them for build quality, security and reliable lead times.

Can I buy a GRP door without fitting?

Yes. If you’re outside our area or have your own fitter, we can supply GRP doors, frames and hardware for delivery across mainland UK. Get in touch for a supply-only quote.

Still got a question?

0800 690 6870

enquiries@verysecuredoors.co.uk

We do not provide quotes over the phone.

More doors

Rockdoor and the other doors we fit

The same fitters, the same price promise.

Rockdoor Vermont in Anthracite Grey with Satin glass and matching external frame colour fitted in Derbyshire

Rockdoor

From £1,900

The highest security specification we fit

Rockdoor Vermont in Anthracite Grey, matching external frame, Continuity glass and large sidepanel with Satin Glass, fitted in Derby

Front doors

From £1,500

Dozens of styles and colours, your choice of glass

Composite back door in White with flag window and Sandstone Glass

Back doors

From £1,500

Solid, half-glazed or a large glass panel

Rockdoor Stable Spy View in Irish Oak fitted in Sudbury, Derbyshire

Stable doors

From £2,350

Split doors, locked top and bottom

Browsing everything? See all our composite doors.

Guides

Guides to help you compare GRP and Rockdoor

Written from what we see fitting doors every day, not manufacturer marketing.

All 11 guides

We fit GRP composite doors across Derbyshire, Nottinghamshire, Leicestershire, Staffordshire, Warwickshire and the West Midlands. Local pages: composite doors in Derby, Nottingham, Leicester, Burton upon Trent, Coventry, Warwick, Nuneaton and Hinckley, Solihull and Birmingham, or Sheffield. Not sure we reach you? Check every area we cover or read about Jim and Josh.

Free quote

Get your free GRP door quote in 24 hours

Send us a photo or two of your door. We’ll reply with a full design and an exact, all-inclusive price.

  • No home visit needed
  • No obligation
  • No sales calls

Your quote is free. If you go ahead, a £100 survey deposit secures your survey, and it comes off your final balance.

5.0 out of 5106 Google reviews

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