Comp Doors: The Complete Guide

Sep 20 2026

Choosing a new front door is one of the most effective ways to boost your home’s kerb appeal, improve security, and cut down on those increasing heating bills. However, with so many composite doors on the market, understanding the different between them can be difficult.

In this handy guide, we’ll explain everything you need to know about Comp Doors, including their timber cores, thermal performance and security features.

What Makes a Comp Door Different?

The main difference between standard composite doors and a Comp Door is what’s inside the door. Many traditional composite doors on the market contain foam-filled cores. However, comp Doors are built around a 48mm solid, cross-laminated Albasia Falcata timber core.

This cross-laminated design provides exceptional structural strength and resistance to impact. By layering the timber in opposite directions, the core distributes the weight evenly, making the door virtually impossible to force open while maintaining a solid, reliable feel when used daily.

How Well Do Comp Doors Handle Weathering & Thermal Movement?

A common frustration for homeowners is that they’re often faced with standard front doors is bowing, cracking, or sticking often caused by thermal movement when direct sunlight heats the outer surface.

Comp Doors address weather resistance and thermal movement through two key features:

CoolSkin Technology: The inner timber core is wrapped in a high-grade uPVC skin engineered with CoolSkin technology. This layer reflects solar heat, preventing extreme temperature changes from warping the door skin and ensuring the colour won't chip, crack, or fade over time.
Minimised Thermal Movement: Thanks to the stability of the cross-laminated timber core combined with advanced multi-point framing, expansion and contraction in warm or cold weather are kept to an absolute minimum.

Are Comp Doors Energy Efficient?

Energy efficiency is very important when upgrading any front or back door. Especially considering any heat lost through your external door with directly impact your heating bill.

Comp Doors provide a U-value of 1.4 W/m²K. The U-value measures how effectively a material prevents heat from escaping; the lower the number, the better the thermal efficiency. Combining a 48mm solid timber core with sealed outer framing creates an airtight barrier that traps heat inside during winter and keeps draughts out.

How Secure Are Comp Doors?

The security of your front door will heavily rely on the quality of your locking mechanism and cylinder.

Comp Doors come fitted with a high-specification of security features

Auto-Slam Locking System: The multi-point locking system automatically engages the moment the door is pulled shut, eliminating the risk of leaving the door unlatched.
3-Star ABS Anti-Snap Cylinder: Fitted as standard, this cylinder actively prevents lock-snapping—one of the most common methods used in forced entries.
PAS 24 & Secured by Design: Every door meets full PAS 24 compliance standards, with optional upgrades available for official Police-preferred Secured by Design certification.
Smart Security Integration: For homeowners interested in smart home monitoring, Comp Doors offer optional compatibility with integrated Kubu sensors, allowing you to check if your door is locked via a smartphone app.

Styles, Finishes, and Colours

Matching your front door to your homes architectural style is very straightforward given the number of finishes available:

Styles & Colours: With over 30 door styles and more than 250 interior and exterior colour combinations, you can select a bold outer colour to maximize kerb appeal while keeping the inside finish crisp white to complement the inside of your home.
Textures: Choose between a classic timber-grained texture or a smooth "Sleek Skin" finish suited to contemporary architecture.

FAQ's

Do Comp Doors warp in the sun?

No. Because the core utilizes cross-laminated timber rather than foam, and the exterior skin features CoolSkin heat-reflective technology, thermal movement and bowing are effectively minimized.

What size is the timber core in a Comp Door?

Comp Doors feature a 48mm thick solid Albasia Falcata timber core.

Are Comp Doors manufactured in the UK?

Yes, every Comp Door is manufactured in the UK to exact bespoke design dimensions.

To design your very own Comp Door, visit our door designer here or make an enquiry for a free, no-obligation quotation.

Our experienced team is on hand to help you choose the ideal style, finish, and security options for your home.