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Nottingham composite doors
Nottingham composite doors
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    • Home
    • Door Quote
    • FD30S Fire Doors
    • Windows
    • Special Offers
    • Finance Options
    • Reviews
    • About Us
    • Composite Door Installs
    • Gallery
    • FAQs
    • Contact Us
    • Solid Core VS GRP Doors
    • Other Specialty Doors
      • Stable Composite Doors
      • Narrow Composite Doors
      • Arched Composite Doors
      • Upvc French Sliding Doors
      • Contemporary Style Handle
      • Side Panels And Toplights
    • Upgrades
      • Solid Core Composite Door
      • Brisant Ultion Cylinder
      • Thermal Glass
      • Yale Conexis Smart Lock
    • Lintels and Brickwork
  • Home
  • Door Quote
  • FD30S Fire Doors
  • Windows
  • Special Offers
  • Finance Options
  • Reviews
  • About Us
  • Composite Door Installs
  • Gallery
  • FAQs
  • Contact Us
  • Solid Core VS GRP Doors
  • Other Specialty Doors
    • Stable Composite Doors
    • Narrow Composite Doors
    • Arched Composite Doors
    • Upvc French Sliding Doors
    • Contemporary Style Handle
    • Side Panels And Toplights
  • Upgrades
    • Solid Core Composite Door
    • Brisant Ultion Cylinder
    • Thermal Glass
    • Yale Conexis Smart Lock
  • Lintels and Brickwork

Solid Core Doors VS GRP Composite Doors - Which is Better?

This article is a guide to the differences between our Solid Core Doors & GRP Composite Doors.

From both a visual and maintenance aspect, Solid Core Doors and GRP Composite Doors are pretty much identical. Both are classed as Composite Doors and both use uPVC frames. GRP doors use a 44mm door slab while Solid Core Doors are usually either a 44mm or 48mm slab. Both are far superior to uPVC doors, which in comparison at best usually only use a 28mm soft polystyrene panel.


Read on to find out more along with the Pros and Cons of Solid Core Doors and GRP Composite Doors.

Solid Core Composite Doors with 16 layers of timber inside

Solid Core Composite Doors

Solid Core Composite Doors

Solid Core Composite Doors

Solid Core Composite Doors are a relatively new product in the industry and are made from multiple layers of laminated timber with either uPVC, ABS or Fibreglass Skins. 


During the manufacturing process, these multiple layers of timber are placed so that the grains are laid in different directions to make the door sturdier and more structu

Solid Core Composite Doors are a relatively new product in the industry and are made from multiple layers of laminated timber with either uPVC, ABS or Fibreglass Skins. 


During the manufacturing process, these multiple layers of timber are placed so that the grains are laid in different directions to make the door sturdier and more structurally sound. 


As Solid Core Doors are mainly made of timber, the door slabs are around twice as heavy as a foam filled GRP Door. This also makes for  a much higher strength door slab. 


Solid Core Doors are the preferred choice of door by the vast majority of insurance companies.

Solid Core Doors are also more environmentally friendly as they are mainly made from wood they can be recycled at the end of their life.


Ask us about our Composite Solid Core Doors that have either ABS (Acrylonitrile Butadiene Styrene) or uPVC skins which provide a robust thermo-plastic door skin, making them incredibly durable.  These skins are designed with ‘through colour’ so scratches are almost impossible .





Solid Core Pros


  • Extremely high security


  • Preferred choice by most insurance companies


  • Easy to clean and maintain


  • Our uPVC skinned Solid Cores are almost impossible to scratch


  • Colour finish on the uPVC skins are resistant to chemicals


  •  Can be recycled at the end of its life


  • Less chance of bowing / warping


  • Available as a certified FD30 Fire Door if required



Solid Core Cons


  • Slightly more expensive than GRP Composite Doors- £200  ON TOP OF THE PRICE FOR OUR GRP DOORS AS SHOWN ON OUR 

COMPOSITE DOOR DESIGNER BELOW. 

GRP Composite Doors with an inner layer of thermally efficient foam.

GRP Composite Doors

Solid Core Composite Doors

Solid Core Composite Doors

GRP or Glass Reinforced Plastic (fiberglass) Composite Doors have been around since the 1990's and are typically filled with foam, making them highly thermally efficient.


The outer layer of a GRP Composite Door is made of two GRP skins bonded to a solid frame which is then filled with insulation which is usually a high density foam. Unfort

GRP or Glass Reinforced Plastic (fiberglass) Composite Doors have been around since the 1990's and are typically filled with foam, making them highly thermally efficient.


The outer layer of a GRP Composite Door is made of two GRP skins bonded to a solid frame which is then filled with insulation which is usually a high density foam. Unfortunately, due to this foam the door slab currently cannot be recycled.


The gel coated GRP skins on the outer layer of the door can be vulnerable to scratching on the surface as it is a sprayed colour finish. 


High quality GRP Doors offer very good security. However, there are some very cheaply made versions available on the UK market. These cheaply made GRP Doors, tend to have extremely thin skins which compromise security, and often use insulation that is almost like loft insulation rather than the solid foam as used on a higher quality GRP door.  This has lead to many insurance companies now explicitly asking for replacement doors for your home to be a Solid Core Door.








 GRP Pros 


  • High thermal efficiency


  • Good security (on high quality GRP doors)


  • Slightly cheaper than Solid Core


  • Easy to clean and maintain



GRP Cons


  • Paint finish can be scratched


  • No longer preferred by many insurance companies


  • Door slabs cannot be recycled at the end of their life


  • Higher chance of bowing / warping when compared to  Solid Core Composite Doors


  • Not available as a FD30 Fire Door

To Sum Up

After you have read the information above we believe that you will agree the Solid Core Composite Doors are definitely the way to go when choosing your next door. 

Use our Composite Door Designer below to design your new door.

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