Timber core or foam core composite doors, which is better?
Neither is better for every job. Foam cores, usually polyurethane, are lighter and insulate better, while timber cores are heavier and stiffer, hold fixings well and are often chosen for security. Match the core to the U-value you need and what the door is tested to.
How do the two cores compare?
| Property | Timber core | Foam core |
|---|---|---|
| Weight | Heavier | Lighter |
| Insulation | Lower | Higher |
| Rigidity | Very stiff | Stiff, depends on build |
| Fixings | Hold screws well | Rely on the door’s internal reinforcement |
| Typical choice | Security-led jobs | Energy-led jobs |
Weights and thermal values vary between makers, so compare the declared figures for the exact doorset rather than relying on core type alone.
What should I check on the spec sheet?
- Declared U-value of the whole doorset
- PAS 24 certificate, if security is part of the brief
- Slab thickness and frame compatibility
- Guarantee length and what it covers
Which should I choose?
Pick by the job: foam for energy performance and easier handling, timber where rigidity and security matter. Check availability of composite doors at our Worthing trade counter.
Need a trade price? Call the trade counter on 01903 262 636 or visit us at Unit 1, Friar Walk, Worthing. We offer free delivery within 30 miles.
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