Solid Timber vs Composite Doors in Ireland: The Honest Comparison
Composite doors dominate the Irish market for external door replacements. Walk down any street in a Co. Louth housing estate and the majority of front doors will be composite. They are widely sold, widely installed, and they work. That is not in dispute.
The question is whether composite is always the right choice, or whether solid hardwood remains the better option in the contexts that suit it. This guide gives a direct answer rather than a diplomatic non-answer.
What a Composite Door Actually Is
A composite door is a manufactured product made from multiple materials: typically a GRP (glass-reinforced polyester) skin over a foam or timber core, with a PVC or hardwood frame. The exterior surface can be moulded and painted to resemble timber grain, though close inspection makes the difference apparent.
The core construction gives composite doors excellent thermal performance, very good security, and low maintenance requirements. The GRP skin does not rot, does not need painting, and resists the weather well. These are genuine advantages.
What a composite door is not is timber. It does not have the grain, weight, or character of a solid hardwood door. It cannot be refinished if the surface is damaged. And on a period property or a house with any real architectural character, it tends to look like a composite door, which on certain buildings is a significant disadvantage.
What a Solid Timber Door Actually Is
A solid hardwood door made by a joiner is built from real timber throughout: hardwood stiles, rails, and panels, assembled with proper joinery, and finished with paint or oil.
The principal external hardwoods used in Ireland are oak, idigbo, and iroko, all of which are dense enough to resist the sort of moisture cycling that would quickly degrade softwood. Correctly made, finished, and maintained, a solid hardwood external door is one of the most durable products a joiner can produce.
What a solid timber door requires is maintenance. The exterior face will need repainting or re-oiling every five to seven years. Neglect this and the finish breaks down, moisture enters the timber, and the door’s lifespan shortens. Maintain it properly and a well-made hardwood door will outlast the house it is hung in.
The Comparison Across Six Factors
1. Thermal performance
Composite: Excellent. The foam core provides very good insulation and modern composite doors consistently achieve low U-values. A well-specified composite door will perform better thermally than a standard solid timber door.
Solid timber: Good, but more dependent on glazing specification and weather seal quality. A solid timber door with a quality double-glazed panel, correctly installed and sealed, performs acceptably. Timber itself is a reasonable insulator compared to metal but less so than composite foam.
Winner: Composite on headline U-value, though the practical difference in a well-installed timber door is marginal for most Irish homes.
2. Security
Composite: Modern composite doors with multi-point locking systems and PAS 24 accreditation meet high security standards and this is well documented.
Solid timber: A well-made solid hardwood door in dense timber with quality multi-point locks and appropriate hinges is equally secure. The material is harder to damage mechanically than GRP. Quality ironmongery is the critical factor for both.
Winner: Broadly comparable with quality specification on both.
3. Appearance and authenticity
Composite: Looks like timber from the kerb, less so at close range. The moulded GRP surface does not replicate the natural grain variation, depth of colour, or tactile quality of real wood. On a modern estate house, this is not a concern. On a period property, it reads as a substitute.
Solid timber: Has the grain, weight, and character that only real timber produces. The surface is unique in each door. On a heritage property in Carlingford, a Victorian terrace in Dundalk, or any house with period architectural features, a solid hardwood door is authentic in a way composite is not.
Winner: Solid timber for architectural authenticity and close-up quality. Composite for a consistent manufactured appearance.
4. Maintenance
Composite: Near-zero maintenance. Clean occasionally, check seals every few years. No painting or oiling required.
Solid timber: Requires repainting or re-oiling every five to seven years on the exterior face. This is real work and a real cost, though not a major one if the maintenance cycle is kept up.
Winner: Composite by a clear margin.
5. Repairability and longevity
Composite: Cannot be refinished. A damaged GRP skin, if the damage is significant, typically requires panel replacement or full door replacement. Average composite door lifespan: twenty-five to thirty years before the GRP skin and core show degradation.
Solid timber: Can be repaired. Surface damage, minor cracks, hardware replacement, and refinishing are all workable by a joiner without replacing the door. A well-maintained hardwood door can last fifty years or more. The guide to when wooden doors need replacing covers the indicators that a timber door has reached end of life.
Winner: Solid timber for repairability and potential lifespan.
6. Cost
Composite (standard size, supply and fit): €2,000 to €3,500.
Bespoke solid timber (supply, make, and fit): €1,800 to €4,500 depending on complexity.
For standard openings, composite is often cheaper. For non-standard openings where bespoke is required anyway, the cost comparison is closer. The 2026 door cost guide covers the pricing detail.
Winner on upfront cost: Composite for standard-size openings.
Who Should Choose Which
Choose composite if:
- The opening is a standard modern size
- Low maintenance is a high priority
- The house is a modern build without period features
- Thermal performance is the primary concern
Choose solid timber if:
- The opening is non-standard and bespoke is required anyway
- The house has period features or heritage character
- The authentic material matters to you
- You are prepared for the maintenance requirement
- Long lifespan and repairability are priorities
For most heritage properties in Carlingford village, older farmhouses on the Cooley Peninsula, and period terraces in Dundalk, solid timber is the right choice. For a 2010 semi-detached on a Dundalk housing estate, composite is a perfectly rational decision.
Frequently Asked Questions
Can a composite door be made to a non-standard size? Some composite door manufacturers offer non-standard sizes. The lead time is longer and the cost is higher. For very unusual openings, bespoke timber may be more practical.
Does a timber door add more to property value than composite? On a period or character property, yes. On a modern estate property, the difference is minimal. Authenticity of materials matters more to buyers of character properties than to buyers of modern ones.
Is there a middle option? Aluclad doors and windows offer a timber interior with an aluminium exterior cladding. The result is low-maintenance on the outside with the warmth and character of timber inside. They cost more than both composite and standard timber but offer a performance combination that suits certain projects, particularly on exposed coastal sites.
For bespoke solid timber doors in Carlingford, Dundalk, Newry, or across Co. Louth, the Setanta doors and windows service starts with a site visit. Contact John on 083 003 3268.
