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Roof trusses form the structural framework that supports the entire roof of a building.

If you're planning a new build, extension or major renovation, understanding the cost of roof trusses early on can help you budget more confidently and avoid surprises later.

This guide explains typical truss roof costs in the UK, what affects the final price, and what to expect when planning a roof structure project.

How much does a truss roof cost in the UK?

As a guide, roof trusses typically cost around £85 per m², with labour and supporting materials adding to the overall project cost.

For a typical 55m² roof area:

• The cost of roof trusses alone is around £4,680

• Installation typically takes around seven days, bringing labour costs to approximately £2,800

• Total average cost of trusses and installation: £7,480

Get a quote for truss roof installation near you

For an accurate idea of costs, it's worth getting quotes from experienced roofers or builders who regularly install roof trusses.

A written quote should confirm the type of truss being installed, the roof size and design, labour and installation costs, any additional materials required, and whether scaffolding is included.

Enter your postcode to compare local roofers and get clear, tailored quotes.

Truss roof costs at a glance

• Roof trusses: £85 per m²

• Roof trusses (55m² roof): £4,680

• Labour (for two workers): £400 per day

• Installation labour (7 days): £2,800

• Scaffolding: around £20 per m²

• Skip hire: around £250 per skip

• Typical cost for trusses and installation (55m² roof): around £7,480

Costs for the full roof structure

Installing roof trusses is only one part of building a roof. Several supporting components are needed to complete the structure safely and meet building regulations.

You’ll often see the elements listed below on a quote alongside the trusses themselves. The costs are ballpark averages to help plan your budget.

Roof tiles

Roof tiles form the protective outer layer of the roof and are one of the largest material costs in a full roof project.

• Typical cost: £13,200 for clay plain tiles on a 55m² roof

Counter battens

Counter battens create ventilation gaps and provide fixing points for roof tiles.

• Typical cost: £1,600 for a 55m² roof

Insulated ceiling to roof trusses

Insulation is essential for energy efficiency and is required to meet modern building regulations.

• Typical cost: £3,600 for a 55m² roof

Closed eaves (fascias, soffits and guttering)

Closed eaves protect the roof edge and help manage rainwater.

• Typical cost: £1,820

Gables

Gables include structural timber and finishing boards along the roof edges.

• Typical cost: £1,135

Common types of roof truss

Different types of roof truss are used depending on the layout of the property and how the roof space will be used.

Some designs are simpler and more cost-effective, while others provide more usable space but require additional materials.

Fink roof truss

The most common and cost-effective option for standard homes. It uses smaller timber sections and is quick to install but offers limited loft storage space.

Attic truss

Designed to create usable living or storage space in the roof. These trusses are heavier and more complex, which makes them more expensive than standard designs.

Traditional cut roof

Built on site rather than prefabricated. Costs are typically similar to attic trusses but depend heavily on labour time.

Gambrel truss

A 'Dutch barn' look that has more than one pitch on each side, creating more internal space. It usually costs more (around 15-20% higher than those of gable roofs) due to increased materials and labour.

Panelised roofing

Uses pre-insulated panels installed across roof beams. Material costs are higher, but installation costs can be lower as the panels have insulation in them already.

What affects the cost of a truss roof?

Several practical factors influence how much your truss roof project might cost.

The most important ones include:

• Roof size: Larger roofs require more trusses, materials and labour time

• Truss design: More complex designs use more timber and take longer to install

• Roof pitch: Steeper roofs can require additional safety measures and labour

• Access to the property: Limited access can increase installation time or equipment needs

• Location: Labour costs vary across the UK, particularly between urban and rural areas

• Building regulations requirements: Structural calculations and approval are needed for new roof structures

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Additional costs to budget for

Beyond the trusses themselves, several additional costs can appear during a roof project.

Common extras include:

• Structural engineer or design fees

• Building control inspections

• Delivery charges for large materials

• Waste disposal or skip hire

• Scaffolding or access equipment

• Upgraded insulation or ventilation

Not every project will include all of these costs, but allowing some flexibility in your budget can help prevent unexpected expenses.

What should be included in a truss roof quote?

It's not every day you receive a quote for a truss roof. A clear written quote makes it easier to compare options and understand exactly what you're paying for.

Here's what a typical quote should include:

• Truss design and supply

• Delivery of materials

• Installation labour

• Scaffolding or access equipment

• Waste removal

• Building regulations compliance

• Total project cost

Comparing more than one quote can help you understand what a fair price looks like for your project.

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How long does truss roof installation take?

The timescale for truss roof installation depends on the size and complexity of the roof.

As a general guide:

• Small roof structures can take around one week

• Larger or more complex roofs may take longer

• Weather conditions can affect installation schedules

Truss roof cost calculator

Our truss roof calculator can help generate an estimate cost for your project.

You will need to consider the size of the roof, the type of truss design, labour time required, materials and supporting components, and access requirements.

Job Estimate Calculator

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This calculator provides a guide price only, not a quote. It’s always best to contact a selection of roofing companies experienced in roof truss installation to get an accurate quote for your project.

Can you install roof trusses yourself?

While you can attempt the build yourself with a truss roofing kit, most people choose to hire experienced installers.

• Installing roof trusses involves lifting heavy structural components and working at height, which can present safety risks

• Mistakes during installation can affect the strength and stability of the entire roof

• Qualified roofers or construction teams will carry out the work safely and in line with building regulations

For the sake of a relatively small extra amount, it's worth getting a team of professionals to ensure correct installation.

Truss roof cost checklist

• Confirm the roof size and design

• Check whether structural calculations are required

• Ask if scaffolding is included in the quote

• Allow time for building regulations approval

• Compare quotes from experienced roofers

• Budget for additional materials and labour

When should you speak to a roofing specialist?

It's usually worth speaking to a professional early in the planning stage of your project, particularly if you're:

• Building a new property

• Adding an extension

• Replacing an existing roof structure

• Planning a loft conversion

A roofing specialist can help you understand design requirements, confirm likely costs, and ensure your project meets safety and building regulations standards.

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Find truss roof specialists near you

If you’re ready to get quotes, comparing local specialists is the best way to understand what a fair price looks like for roof truss design and installation in your area.

A good roofing company should be able to assess your requirements, review the roof design and confirm what approvals may be needed, and give you a clear written quote that sets out what is and isn’t included.

FAQs

What are roof trusses?

Roof trusses are prefabricated structural frames that support the roof of a building. They are designed to span large distances and distribute weight evenly across the walls, helping to keep the roof stable and secure.

What is the truss roof cost per square metre?

Roof trusses typically cost around £85 per m², although the total project cost will depend on roof size, labour and supporting materials.

Are truss roofs cheaper than rafters?

Prefabricated truss roofs are often 30% to 50% cheaper than building traditional rafters on site because they require less labour time.

How long do roof trusses last?

Timber roof trusses can last as long as the building itself when kept dry and properly maintained. Regular roofing maintenance will extend the lifespan of the trusses by preventing moisture from leaks or structural decay from damaging the frame.

Can I build a truss roof myself?

Most roof truss installation requires specialist equipment and experience. Professional installation is usually recommended to ensure safety and compliance with building regulations.

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