Do Composite Doors Keep Heat In?
Composite doors are built with a solid insulated core and multi-point locking that compresses a draught seal, so they hold heat in far better than most old front doors.
6 minute read
Advice
Energy efficiency and U-values
How much heat your front door really loses, and what a modern doorset changes.
A front door is a small part of the wall area but a disproportionate source of draughts. These guides explain U-values in plain terms, what a whole-doorset figure includes that a slab-only figure does not, and how much of the heat loss you feel is actually air leakage around a worn seal rather than conduction through the door itself.
Cornwall's mild but wet and windy climate changes the priorities: wind-driven draught-proofing and compression seals usually deliver more comfort than chasing the last fraction of a U-value.
10 guides in energy efficiency
How Composite Doors Reduce Energy Bills
A composite door reduces energy bills by cutting heat loss through the panel and sealing draughts around the frame, easing the load on your heating system.
6 minute read
Best Front Doors for Energy Efficiency
For genuine energy efficiency, look at U-value, glazing, and seals rather than material alone — a well-specified composite door is usually the strongest all-round option.
7 minute read
Why Composite Doors Are Ideal for Coastal Homes
Cornwall's coastal weather is hard on front doors. Composite doors resist warping, salt exposure, and driving rain far better than timber, while keeping heat in.
6 minute read
Understanding U-Values
A U-value tells you how much heat passes through a door — the lower the number, the better the insulation. Here's what the figure actually means.
6 minute read
Composite Doors vs Timber for Insulation
Timber can insulate well when new, but composite doors hold their thermal performance for longer because they don't warp or absorb moisture the way timber does.
6 minute read
Composite Doors vs uPVC for Warmth
Composite and uPVC front doors can achieve similar U-values on paper, but composite panels tend to hold their seal better over time thanks to greater rigidity.
6 minute read
How Draughty Front Doors Cost You Money
A draughty front door forces your heating to work harder just to maintain temperature, and the gaps often get worse over time rather than staying the same.
6 minute read
Winter-Proof Your Home with a Composite Door
A composite door with a good U-value and full-perimeter seal is one of the more practical ways to prepare your home for a Cornish winter.
6 minute read
How Front Doors Affect EPC Ratings
A front door's U-value is one small input in a wider EPC calculation, so a new composite door can nudge your rating slightly but won't transform it alone.
6 minute read
Get started
Ready for a beautiful new front door?
Free, no-obligation surveys across Cornwall. Written 10-year guarantee on every install.
