
Prices and choosing · 15 min read
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Free quotes within 24 hours, no home visit needed
5.0 from 106 Google reviews
Rockdoor Trusted Installer since 2015
0800 690 6870enquiries@verysecuredoors.co.ukEmail us My account Basket
Over 3,000 doors fitted since 2010
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

Trusted, accredited and accountable

Rockdoor Trusted Installer

Certass registered

QANW certified

Certified Competent
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 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.

From £1,500 fitted
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.

From £1,500 fitted
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.

Each panel adds £300–£500
Side panels and a toplight bring more light into a hallway and suit wider openings. They are made to match your door.
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.
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.
A high-density polyurethane core insulates the door. HomeFrame quote U-values from 1.0 W/m²K for solid-panel styles.
Laminated veneer lumber, an engineered timber, sits inside the 44mm door. It stays straighter than a plain timber frame.
A 72mm Rehau frame with steel box reinforcement. Rockdoor uses Rehau frames too.
What’s included
One price, in writing, before you commit.
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
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.
Day 1
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
A design of your new GRP door and an all-inclusive price. No sales calls, no obligation.
Within a week
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
Your GRP door is made to measure, to the sizes we took at the survey.
2 to 3 weeks later
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.








Reviews
From 106 Google reviews
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.
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 ) .
Common questions
Tap a question to see the answer.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
More doors
The same fitters, the same price promise.
Browsing everything? See all our composite doors.
Guides
Written from what we see fitting doors every day, not manufacturer marketing.

Prices and choosing · 15 min read

Prices and choosing · 14 min read

Locks and glass · 6 min read

Locks and glass · 11 min read
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
Send us a photo or two of your door. We’ll reply with a full design and an exact, all-inclusive price.
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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Jim or Josh will reply within 24 hours with a full design and an exact, all-inclusive price. A copy of your enquiry is on its way to your inbox.
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