Quick Enquiry Form

For questions or no-obligation quotations please use our Enquiry Form

GRP Composite Doors

GRP Composite Doors offer the ultimate protection from intruders and weather. At Composite Doors Cardiff we recommend the premium Distinction Doors collection.

What to look for in a GRP Composite Door

Style – Our GRP Composite Doors are aesthetically pleasing and are available in a wide range of colours and a variety of hardware and glazing options.

Security – Quite simply, you want to keep intruders out! GRP Composite Doors  are made from impact resistant GRP (Glass-Reinforced Plastic) with a rigid polymer subframe which conforms to PAS 24 Security Standards, a prerequisite for achieving the ‘Secured by Design’ endorsement.

Weather Resistance – GRP Composite Doors keep the elements at bay. They are proven to the BS6375-1 Classification, for weather tightness, air, wind and water.

Heat Insulation – Our Composite Doors exceed Approved Document L of Building Regulation requirements, helping to keep your home insulated and your bills down.

Sound Insulation – GRP Composite Doors protect you from external noise. Composite Doors Cardiff have an Outdoor-Indoor Transmission Class of 26db and at least Sound Transmission Class (STC): 29db

Durability – Composite Doors Cardiff provide GRP Composite Doors with pedigree, offering strength, high impact resistance and stability. Each door is backed by a 10 year guarantee!

distinction doors
Inside a GRP Composite Door

Insulated GRP Composite Doors are strong, durable and extremely secure. They are manufactured in line with extremely high quality guidelines. Their extremely respectable strength comes from the construction of a sub-frame in solid, water-resistant polymer material, reinforced behind with Laminated Veneered Lumber (LVL). Thermoset GRP skins are bonded to the sub frame and high density 100% CFC-free polyurethane foam is filled into the core. This provides extremely high levels of acoustic and thermal efficiency.

Insulation properties of GRP Composite Door are unrivalled in both sound reduction and heat retention. They are particularly good at reducing road traffic noise and, with their high thermal insulation qualities, they outperform both timber and uPVC doors. The ultimate insulation properties contribute to the energy efficiency of your home, and can contribute to substantial savings on your energy bills.


GRP Composite Doors are well insulated, made to last, look good, are environmentally friendly, offer superior security protection and will serve you well for many years to come. Whatever you look for in a door, we’ve got it covered.



Extremely Secure


Thermally efficient

Acoustically efficient

What is GRP?

Thermoset GRP skins are Depression Moulded over authentic timber panels. This produces a lifelike grain effect.  High definition panels provide the appearance of an authentic timber door, but without the negative qualities of wooden doors. Thermoset GRP cannot expand or contract laterally, meaning GRP Composite Doors cannot expand or contracts (or increase or decrease in size) which is a massive advantage over other types of door, such as uPVC.

GRP Composite Door Colours

There are a choice of standard colours (White, Red, Green, Blue and Black) as well as premium colours that include popular options such as Anthracite Grey and Chartwell Green. There are also a choice of natural Woodgrain colours - Golden Oak and Rosewood. If there is a colour that you like, and you know the RAL number of that colour, we can also produce your GRP Composite Door in that colour for you for an additional charge.

What our customers say

Jordan, Penarth

Right from the beginning Rob was very helpful and helped me pick the right style of door. The service was very good. I will be going back next year when I have new windows and would recommend Composite Doors Cardiff to anyone.

Greig, Swansea

Totally professional service from the outset. From my initial inquiry, through to installation, Rob and his team made sure the whole job went without a hitch.

Matthew & Sue, Brecon

We have small children so wanted the to make sure our family home was safe and secure. Rob gave expert advice and actually advised us against spending more than we were going to. Not only have we saved money, but we also have an attractive & secure home as well!

grp composite door
distinction doors
Would you like to see some brochures?
fsb member
military discount
homepro insurance backed guarantee
featured on houzz
nhs staff discount

Copyright © 2017-2020 Composite Doors Cardiff Limited.
Company No. 11654260. Registered in England and Wales.
VAT Registration No. 315 3976 91


5 star reviews