How Much Does the Average Truss Roof Cost in 2020? | Checkatrade
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Truss roof cost guide

Highly versatile and exceptionally durable, roofing trusses are an increasingly popular choice for homeowners. Designed to span large distances and support the roof of a building, these triangular wooden structures help to keep the integrity of a roof. If you’re considering building your home with a truss roof, you will benefit from faster installation, flexibility and reduced expense. On the subject of prices, we’ve put together the following guide to give you an overview of the average truss roof cost.

When you’re ready to get started, use our free search tool to find roofing experts in your local area.

Truss roof cost

MaterialsUnitAverage cost
Roof tiles55m2 build
Lead flashing55m2 build
Roof battens55m2 build
Roof vents55m2 build
Nails/fixing55m2 build
Breathing membrane 55m2 build
Scaffolding7 days use£700
Skip hire7 days use£150

Roof trusses, also known as trussed rafters, are a critical consideration in any new build. When it comes to costs, there’s a lot to take into account. Before they can be designed and ordered, the type of truss will need to be specified, along with the span and pitch of the roof. For a standard 3-bedroom new build property, you will need around 14 standard roof trusses of 35mm deep with a span of 8000mm and a pitch of 35 degrees. This will come to just under £1,000.

Next, there’s the cost of labour. Typically, professionals in this trade work in pairs for safety reasons, and charge a combined day rate of approximately £285. The truss roofing will take approximately seven days to install, coming to a total cost of around £2,000. In total, we recommend budgeting around £3,000 at least, but keep in mind that the larger the span of the roof, the higher the cost.

While you can attempt the build yourself with a truss roofing kit, the costs for all the materials plus skip hire and scaffolding will come to at least £2,000. For the sake of an extra £1,000, it’s worth getting a team of professionals to ensure correct installation.

What factors influence the roof truss cost per square foot?

Our table on the right provides a rough truss roof cost calculator. However, the total price you can expect to pay for these will depend on a myriad of factors, including:

Tradespeople requiredTimescale requiredAverage Cost
2 x Roofers / Carpenters7 Days£1,750-£2,000
  • Truss type: This relates to the shape of your roof;
  • Span (mm): The distance across the length of the truss;
  • The pitch (degrees): This relates to the angle that the beams will be from the walls up;
  • The quantity: The number of trusses required;
  • The distance: The space between the trusses and complexity of design;
  • The location: Prices always skew higher in big cities where the demand is greater.

Since so many factors influence the total truss roof cost, always leave room in your budget during planning.

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roof truss cost per square footWhat is the truss roof cost per square foot?

With a range of materials and design elements to choose from, it’s easier to calculate the truss roof cost per square foot or square metre. We recommend working on a baseline cost of about £37.50 per square metre. 

Are truss roofs cheaper than rafters?

The average truss roof cost as a prefabricated package is around 30%-50% cheaper than the material and labour costs to build rafters on site.

How long do truss roofs last?

Known for their durability, timber roof trusses last as long as the home itself if they are maintained in a dry environment. Regular roofing maintenance will extend the lifespan of the trusses, preventing moisture from leaks or erosion from termites from damaging the frame.

Can I build a truss roof by myself?

Completing a truss roof project requires expert knowledge and specialist tools. This is one part of your housing project you do not want to mess up! If you have previous experience in roofing, you may attempt this project on your own, but will likely employ subcontractors to speed up the process and aid in the build.

Use our search tool below to start getting quotes for your truss roof.

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