Roof Trusses Cost Ireland 2026
Roof trusses are the most common roofing structure used in Irish new-build homes, with over 95% of new builds using pre-fabricated timber trusses. In 2026, the cost of roof trusses in Ireland typically ranges from €80 to €200 per truss for standard timber trusses, or €45 to €75 per m² for supply and fit. The total cost for a standard 3-bed semi-detached home is typically €1,800 to €4,500 fully installed. This guide covers all truss types, cost factors, and how to get the best price from Irish suppliers.
See Roof Truss Prices ↓
Roof Truss Prices Ireland 2026
Average supply and fit costs for roof trusses in Ireland, including VAT at 13.5%.
| Truss Type | Cost Per Truss | Cost Per m² | Typical Use |
|---|---|---|---|
| Standard Fink Truss | €80 – €130 | €45 – €60 | Most common — standard pitched roofs on semi-detached and detached homes |
| Attic Truss (Room-in-Roof) | €150 – €250 | €65 – €90 | Creates usable attic space — ideal for attic conversions |
| Hip Truss | €100 – €180 | €55 – €75 | Hipped roof designs on detached and bungalow properties |
| Raised Tie Truss | €110 – €190 | €55 – €80 | Higher ceiling height in rooms below roof space |
| Steel Roof Truss | €200 – €450 | €90 – €140 | Large spans — commercial buildings, agricultural sheds, extensions |
| Posi Joist / Metal Web | €120 – €220 | €60 – €95 | Flat roof and floor applications — allows services to run through |
Prices include VAT at 13.5% and are based on typical Irish market rates in 2026. Final costs depend on roof size, span, pitch, and your location. Always obtain at least three written quotes from registered contractors.
Factors That Affect Roof Truss Costs in Ireland
Several key factors influence what you will pay for roof trusses on an Irish building project.
Roof Size and Span
The larger the roof, the more trusses required and the higher the total cost. Standard trusses are spaced at 600mm centres, so a longer roof needs more trusses. Spans over 12 metres require heavier timber sections under Irish Building Regulations, which increases both material and labour costs. A standard 3-bed semi-detached typically requires 14–18 trusses depending on the span.
Truss Type
Standard fink trusses are the most affordable option. Attic trusses (room-in-roof) cost significantly more because they require larger timber sections and two-ply construction to support habitable floor loads. Scissor trusses, hip trusses, and curved lenticular trusses all carry a premium due to their design complexity. If you are planning an attic conversion in Ireland, attic trusses are the recommended choice from the outset.
Material — Timber vs Steel
Over 95% of Irish residential roofs use pre-fabricated timber trusses as they are cost-effective, fast to install, and meet Irish Building Regulations (IS EN 14250:2010). Steel roof trusses are used for large commercial spans, agricultural buildings, and extensions requiring clear spans over 15 metres. Steel trusses cost 2–3 times more than equivalent timber trusses and require crane hire for installation.
Roof Pitch and Shape
Steeper pitches require more timber per truss, increasing material costs. Complex roof shapes — hipped ends, valleys, dormers — require additional specially designed trusses (girder trusses, hip sets) which add to the total. A simple gable roof is always the most cost-effective option. Every additional corner, valley or dormer adds cost.
Labour and Installation
Truss installation labour in Ireland typically costs €800–€2,500 depending on roof size and complexity. Trusses are craned or manually lifted into position and fixed to wall plates at each end. Most standard residential roofs can be trussed in one to two days. Additional costs include scaffolding, waste removal (€150–€350), and delivery charges from the truss manufacturer (typically €150–€400 depending on distance).
Location in Ireland
Labour rates vary across Ireland. Dublin and the Greater Dublin Area carry a 15–25% premium on installation costs compared to rural counties. Material costs are broadly similar nationwide as most Irish truss manufacturers offer nationwide delivery. If you are based in Dublin, see our Roof Replacement Cost Dublin guide for full regional pricing.
Cut Roof vs Roof Trusses — Which Is Cheaper?
Pre-fabricated roof trusses are on average 30% cheaper than a traditional cut roof (also called a stick-built or rafter roof). A cut roof is built on-site by a carpenter from individual timbers — it takes longer, creates more waste, and requires more skilled labour hours. Trusses arrive pre-manufactured to your exact specifications, are installed in one to two days, and carry an engineer’s design certificate. For the vast majority of new-build homes and extensions in Ireland, roof trusses are the recommended and most cost-effective choice. A cut roof is only preferable when the roof design is too complex for standard truss manufacture or where head height in the attic space is a priority without using attic trusses.
Roof Trusses Ireland — Frequently Asked Questions
Answers to the most common questions Irish homeowners and self-builders ask about roof truss costs and installation.
How much do roof trusses cost in Ireland?
Roof trusses in Ireland cost between €80 and €150 per truss for standard timber fink trusses, supply only. Fully installed including labour, the cost for a standard 3-bed semi-detached home typically ranges from €3,500 to €8,500 depending on roof size, truss type, and location. Attic trusses cost more at €180–€300 per truss due to their larger timber sections and additional structural requirements.
How much does one roof truss cost in Ireland?
A single standard timber fink truss in Ireland costs between €80 and €150 for supply only, depending on the span, pitch, and manufacturer. Attic trusses cost €180–€300 each. Steel trusses for commercial or agricultural use cost €200–€450 per truss. A standard 3-bed semi-detached requires approximately 14–18 trusses depending on roof length.
How much do roof trusses cost per m² in Ireland?
Roof trusses in Ireland cost between €45 and €65 per m² for standard timber trusses, supply and fit including VAT at 13.5%. Attic trusses cost €70–€100 per m² installed. These figures include delivery, installation labour, and waste removal. Steel trusses cost €90–€140 per m² installed and require crane hire which is usually charged separately.
Are roof trusses cheaper than a cut roof in Ireland?
Yes — pre-fabricated roof trusses are on average 30% cheaper than a traditional cut roof in Ireland. A cut roof is built on-site from individual timber rafters by a carpenter, which takes longer and requires more skilled labour. Trusses arrive pre-manufactured, are installed in one to two days, and carry an engineer’s design certificate. For most Irish new builds and extensions, trusses are the standard and most cost-effective choice.
Why are roof trusses so expensive?
Roof trusses require precision engineering, specialist software design, and structural certification to comply with Irish Building Regulations (IS EN 14250:2010). Timber prices in Ireland have increased significantly since 2021 due to global supply chain disruptions. Labour costs for installation have also risen. Despite this, trusses remain significantly cheaper than cut roofs when the full cost of on-site carpentry labour is taken into account. Getting three quotes from Irish truss suppliers is the best way to ensure a competitive price.
Can I get a grant for roof trusses in Ireland?
There is no direct SEAI grant for roof trusses in Ireland. However, if your roof truss installation is part of a broader roof replacement or new build that includes attic insulation, you may qualify for the SEAI Better Energy Homes grant of up to €1,500 for attic insulation works. Check SEAI.ie for current eligibility criteria and grant amounts.