Are your barge boards looking a little tatty or letting in the weather? Use our barge board cost guide to find out how much budget you'll need to replace or cap them.

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Barge boards sit at the gable end of your roof, and while they're easy to overlook, they do an important job - protecting your roof timbers and keeping rainwater out.

When they start to rot, crack or pull away from the wall, it's time to act.

This guide covers everything you need to know about barge board replacement cost in the UK, including what affects the price, whether to cap or fully replace, and how to find a reliable roofer for the job.

What is a barge board?

A barge board is a long board fitted to the gable end of a roof - the triangular section of wall at each end of a pitched roof.

Running diagonally along the roof edge, barge boards cover the exposed ends of the roof timbers and prevent rainwater from working its way into the structure.

They're most commonly made from timber or uPVC, and unlike fascia boards, they don't carry guttering.

Because of their exposed position, barge boards take a lot of punishment from wind and rain, which is why timber versions in particular can deteriorate over time.

What does barge board replacement cost?

The average barge board replacement cost for a typical UK property is around £720.

However, the final price depends on a number of factors, including:

• Your location

• The material you choose

• The condition of the surrounding roof tiles

London is the most expensive area to have a barge board replaced with costs averaging £800, while in the South, South West and Midlands, expect to pay closer to£640.

Costs are typically quoted per property or per linear metre - your tradesperson should be able to give you a clear breakdown before any work begins.

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What affects the cost of replacing barge boards?

• Location - labour costs are higher in London and the South East

• Material - uPVC is generally more cost-effective than timber, both upfront and over time

• Property size and complexity - more gable ends means more linear metres of board

• Accessibility - difficult-to-reach rooflines will increase scaffolding costs

• Condition of roof tiles - if tiles are disturbed during the work, re-cementing adds to the overall price

• Capping vs full replacement - capping is cheaper initially, but full replacement lasts longer

Scaffolding costs

In most cases, scaffolding will be required to safely access the gable end of the roof. This is a separate cost that's worth factoring into your budget from the outset.

Scaffolding costs: Price breakdown 2026 (UK)

Scaffolding is essential for many home improvement projects, including roof repairs, exterior painting, and repointing. Discover average scaffolding costs, factors that affect price, and what you need to know about permits.

Learn more

Signs your barge boards need replacing

Because barge boards sit high up on the gable end, they can deteriorate without you noticing.

Here's what to look out for:

Peeling or flaking paint

Peeling paint on timber barge boards is a warning sign. Press the board gently - if it feels firm, it may just need sanding and repainting. If it's soft or crumbles, the timber has rotted and needs replacing.

Cracked, warped or damaged boards

Gaps or cracks in the boards allow rainwater to get in behind them. Over time this leads to rot in the roof timbers - a far more expensive problem to fix.

Boards pulling away from the wall

If you can see your barge boards starting to separate from the roof edge, don't wait. Gaps here let in wind, rain and pests.

Damp or water damage in the loft

Unexplained damp near the gable end of your loft is often a sign that the barge boards above are failing. If water is getting in, the boards need attention.

Birds or pests in the eaves

Barge boards that have cracked or pulled away create gaps that birds and other pests can use to get into your loft space. If you notice nesting activity, it's worth having the roofline inspected.

Timber vs uPVC barge boards - which is better?

The two main materials for barge boards are timber and uPVC.

Here's how they compare:

For most homeowners, uPVC is the practical choice. It requires very little upkeep, doesn't rot or flake, and is available in a range of colours and woodgrain finishes that can complement almost any property style.

Timber remains popular on older or period properties where the original aesthetic needs to be maintained, but it does require regular repainting and treatment to stay in good condition.

Should you cap or fully replace your barge boards?

Capping (sometimes called overcapping) involves fitting new boards directly over the existing ones, rather than removing them first. It's quicker and cheaper in the short term, but it's not always the right choice.

When capping might be suitable:

• The existing boards are structurally sound but cosmetically worn

• There's no rot or damp present

• You want to minimise disruption to roof tiles

• Budget is a key concern

When full replacement is the better option:

• There's any sign of rot, damp or structural damage

• The existing boards are pulling away from the roof

• You want a longer-lasting result

• You're already having other roofline work done

Capping locks in whatever's behind the new boards - including any hidden rot. Full replacement gives you a clean start and a longer-lasting result.

In most cases, if there's any doubt about the condition of the existing boards, full replacement is the wiser investment.

Is it worth replacing barge boards as part of a wider roofline job?

If your barge boards need replacing, it's worth considering the condition of your fascias, soffits and guttering at the same time.

Scaffolding is often the single biggest cost in any roofline job, so combining the work can save you significant money compared to doing each element separately.

Replacing everything in one visit also gives a neater, more consistent finish - particularly useful if you're switching from timber to uPVC across the whole roofline.

You can find out more about the full cost of fascia and soffit replacement in our dedicated fascia and soffit replacement cost guide, and about dry verge systems - which sit alongside barge boards at the roof verge - in our dry verge cost guide.

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Top tip: If your roof tiles at the verge are looking worn or have been disturbed during previous work, ask your tradesperson about roof verge repointing or dry verge systems at the same time.

Need more renovation advice? Whether your home is Georgian, Victorian, or Edwardian, Checkatrade can help. From hiring services like period property renovation to a heritage property specialist, we’ve got you covered.

How to find a reliable tradesperson for barge board replacement

Barge board replacement involves working at height and often disturbing roof tiles. It's not a job to hand to just anyone - you want someone with specific roofline experience.

When looking for a roofer or roofline specialist, here's what to consider:

• Check they have experience with barge board and roofline work specifically

• Ask whether scaffolding is included in their quote

• Get at least two or three quotes before committing

• Check reviews from previous customers

• Make sure they're properly insured for working at height

All tradespeople on Checkatrade are subject to up to 12 checks before they join, covering qualifications, insurance and identity.

Every job is also backed by the Checkatrade guarantee for additional peace of mind.

You can also browse roofers near you or find specialists in roof repairs near you directly through Checkatrade.

Barge board replacement checklist

Here's a checklist of what to remember with barge boards

• Inspect barge boards for rot, cracks or gaps - especially after winter

• Check your loft for damp near the gable ends

• Decide between capping and full replacement based on board condition

• Choose your material - uPVC or timber

• Get at least two or three quotes from vetted roofers

• Confirm whether scaffolding is included in each quote

• Ask about combining the work with fascia, soffit or guttering replacement

• Check if your property has any planning or conservation restrictions on materials

• Make sure your tradesperson is insured for working at height

On Checkatrade, you'll only find trades who meet our high standards and pass up to 12 checks.

FAQs

What is the average barge board replacement cost in the UK?

The final cost depends on the size of the property, the material chosen, scaffolding requirements and whether any roof tile cement work is needed.

How much does uPVC barge board replacement cost?

On average a plastic uPVC barge board cost is £600, though this varies by location and property size. uPVC is generally competitive with timber on upfront cost, and considerably cheaper over time thanks to its low maintenance requirements.

How long does barge board replacement take?

Most barge board replacement jobs take around a day for two workers - roughly 8 hours. This includes time to erect scaffolding and re-cement any roof tiles that are disturbed during the work. More complex jobs, or properties with multiple gable ends, may take longer.

What is the difference between a barge board and a fascia board?

Both are part of the roofline, but they sit in different positions. A fascia board runs horizontally along the bottom edge of the roof and supports the guttering.

A barge board runs diagonally along the gable end of the roof and covers the exposed ends of the roof rafters. Neither carries guttering - that's the fascia's job. You can read more about the differences in our guide to soffits and fascias.

Is it better to cap or fully replace barge boards?

Capping is cheaper in the short term and may be suitable if the existing boards are structurally sound. However, full replacement is generally recommended if there's any sign of rot or damp, as capping simply covers the problem rather than fixing it.

Most experienced roofline tradespeople will recommend full replacement for a long-lasting result.

How long do uPVC barge boards last?

Well-fitted uPVC barge boards can last 25 years or more with minimal upkeep. They're fully waterproof, don't rot or flake, and only need an occasional clean with soapy water.

Timber barge boards typically last 10-15 years, but only with regular repainting and treatment every two to three years.

Do I need scaffolding to replace barge boards?

In most cases, yes. Barge boards sit at the gable end of the roof, which typically requires scaffolding to access safely.

The cost of scaffolding varies depending on your property but is worth factoring into your overall budget. Some tradespeople include scaffolding in their quote - always check before agreeing a price.

Can I replace barge boards myself?

Technically possible, but not recommended. Working at height on a roof carries significant risk, and disturbing roof tiles without the right experience can lead to leaks and additional repair costs. It's safer and more cost-effective in the long run to use a vetted roofline specialist.

Should I replace barge boards at the same time as fascias and soffits?

It's worth considering. Scaffolding is often the biggest single cost in any roofline job, so combining barge board replacement with fascia, soffit or guttering work can save money overall. It also gives a more consistent finish, especially if you're switching to uPVC across the whole roofline.

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