Cost guide | Sheffield & South Yorkshire
How Much Does It Cost to Refelt a Roof in Sheffield?
Quick answer
Refelting a pitched roof in Sheffield typically costs £800–£2,500+ depending on size, pitch, and access. A garage roof refelt usually comes in at £300–£700, and a shed roof at £150–£350. The final price depends on roof area, felt grade, condition of the timber deck, and whether scaffolding is needed. Getting the right felt and fixing method matters more than finding the lowest quote.
Call 07852 940350 or email photos to ajrroofing17@gmail.com and we’ll advise the next step.
What Does Refelting a Roof Mean?
Roofing felt (also called sarking felt or underlay) is the layer installed beneath roof tiles or slates. It sits over the timber rafters and battens, acting as a secondary barrier that catches any water that gets past the tiles above.
Over time, felt degrades. It becomes brittle, splits, sags between rafters, or develops holes — especially in older properties. When this happens, even a small gap in the tiles can lead to water getting into the roof space, soaking insulation, and eventually causing ceiling damage or rot in the timber structure.
Refelting means stripping back the tiles or slates, removing the old felt, and installing new underlay before re-laying the tiles. It’s a significant job but a necessary one when the felt has reached the end of its life.
Cost to Refelt a Pitched Roof in Sheffield
For a typical semi-detached or terraced house in Sheffield, refelting the pitched roof is a substantial job that involves stripping the tiles, removing old felt, and re-laying everything correctly.
| Property Type | Approximate Roof Area | Estimated Cost |
|---|---|---|
| Small terraced house | 50–70m² | £800–£1,400 |
| Semi-detached house | 70–100m² | £1,200–£2,000 |
| Detached house | 100–150m² | £1,800–£2,800 |
| Large detached / complex roof | 150m²+ | £2,500–£4,000+ |
These are guide prices for Sheffield in 2026. They include stripping tiles, removing old felt, fitting new breathable membrane, and re-laying existing tiles. Scaffolding and tile replacements are additional.
Important: If your tiles are in poor condition, refelting is often done alongside a partial or full re-tile. We’ll always assess the tile condition when we quote, so you get a clear picture of the full scope before any work starts.
Cost to Refelt a Garage Roof in Sheffield
Garage roofs are one of the most common refelting jobs we carry out in Sheffield. Most domestic garages have a flat or low-pitch roof with a felt surface, and felt roofs typically last 10–20 years depending on the grade and exposure.
Estimated cost: £300–£500
Includes strip, dispose, and new 3-layer felt.
Estimated cost: £500–£800
Price rises with size and fascia/edging condition.
If the garage roof deck (the boards underneath) has rotted or become waterlogged, this adds to the cost. New deck boarding typically costs £15–£30 per m² on top of the refelting price. We always check the deck condition before quoting, so there are no surprises mid-job.
3-layer torch-on felt for garage roofs
Most garage roofs in Sheffield use a 3-layer torch-on felt system. This involves three layers of bitumen felt bonded together with heat, creating a durable, waterproof surface. The cost per m² for 3-layer felt is typically £25–£40 installed.
Alternatives include EPDM rubber (longer lifespan, slightly higher upfront cost) and GRP fibreglass (very durable, seamless). We can advise which system suits your garage best.
Cost to Refelt a Shed Roof in Sheffield
Shed refelting is a smaller, more straightforward job. Most sheds use a basic mineral felt that can be replaced without removing the cladding or structure underneath.
| Shed Size | Approximate Area | Estimated Cost |
|---|---|---|
| Small shed (6×4 ft) | 2–3m² | £150–£250 |
| Medium shed (8×6 ft) | 4–6m² | £200–£350 |
| Large shed or workshop (10×8 ft+) | 7–12m² | £300–£500 |
If you’re having a garage roof done at the same time, combining the jobs can reduce the overall labour cost. It’s worth asking us about bundling if you have multiple felt roofs on the property.
What Affects the Cost of Refelting a Roof?
The size of the roof is the biggest factor, but it’s not the only one. Here’s what moves the price:
Roof size and pitch
More area means more felt, more battens, and more labour time. Steeper pitches are harder to work on safely and take longer. A high-pitch Victorian terrace costs more to refelt than a shallow-pitch modern bungalow of the same footprint.
Condition of the existing timber deck
If the timber rafters or roof deck have rotted from prolonged water exposure, they need repairing or replacing before new felt goes on. This is common in older Sheffield properties where the felt has been failing for years without being addressed. Deck repairs add to both material and labour costs.
Type of felt used
Basic mineral felt is the least expensive option. Breathable membranes (also called roofing underlay) cost more but are a significant upgrade — they allow moisture vapour to escape from the roof space, reducing condensation problems. Most roofers now use breathable membrane as standard.
Scaffolding
Two-storey properties or houses with restricted access will need scaffolding. This adds £400–£900 to the project cost depending on the setup required. Single-storey garages can usually be reached from a ladder or low platform.
Tile condition and replacement
If tiles are cracked, missing, or nearing the end of their life, replacing them as part of the refelting job is more cost-effective than doing two separate jobs. We’ll give you a clear breakdown of which tiles need replacing and what that adds to the quote.
Access and location within Sheffield
Properties in tight terraced streets can be harder to access with equipment, particularly in the older parts of Sheffield such as Sharrow, Heeley, and Hillsborough. This can add a small amount to the labour cost, though it’s rarely significant.
One thing to be aware of: Very low quotes often mean basic felt grade, no scaffolding where it’s needed, or corners cut on timber repairs. We’ll always tell you what’s included in our quote — and what isn’t.
Signs Your Roof Felt Needs Replacing
You can’t see the felt from the outside without lifting tiles, but there are signs it may be failing:
- Water stains or damp patches on the ceiling or inside the loft after rain — especially if the tiles look intact from outside
- Light visible in the loft during the day — if light gets in, water can too
- Sagging or torn felt visible when you inspect from inside the loft with a torch
- Dust or debris falling from the felt — old bitumen felt becomes very brittle and starts to break apart
- Condensation in the loft — failed or non-breathable felt can contribute to moisture build-up
- Rot in the roof timbers — a sign water has been getting past the felt for some time
If you’re not sure, we can do a roof inspection and check the felt condition from inside the loft. This takes around 20–30 minutes and gives you a clear answer before committing to any work.
Types of Roofing Felt Explained
There are three main types of felt used in Sheffield residential roofing:
Traditional bitumen felt
The classic roofing underlay, used in most UK homes built before the 1990s. It’s non-breathable, meaning any moisture trapped in the roof space has to escape through the ridge or soffit vents. When it fails, it typically splits or tears. Lifespan: 15–25 years.
Breathable roofing membrane
The modern standard. Allows water vapour to pass through from inside the roof space outward, reducing condensation and improving ventilation. More durable than traditional bitumen felt and lighter to handle. Lifespan: 40+ years. This is what we recommend for pitched roofs in Sheffield.
3-layer torch-on felt (flat roofs)
Used on flat and very low-pitch roofs such as garages and extensions. Three layers of bitumen-based felt are bonded together using a gas torch. Creates a watertight, robust surface. Lifespan: 15–20 years depending on exposure.
Call 07852 940350 and we’ll give you a straight answer — no sales pressure.
Common Questions About Refelting a Roof
Can I refelt a roof without removing the tiles?
Not properly. To replace the felt on a pitched roof, the tiles or slates need to be lifted so the old felt can be stripped and new felt laid. The tiles are then re-laid on new battens. Some temporary repair patches exist, but they’re not a long-term solution.
How long does refelting a roof take?
A standard semi-detached house in Sheffield typically takes 3–5 days for a full strip and refelt. A garage roof is usually done in a day. Weather conditions affect timelines — we won’t rush the job if rain is forecast during a critical stage.
Does refelting a roof add value?
A sound, dry roof is expected by buyers and surveyors. If a surveyor notes failed felt as a defect, it can trigger a price reduction or cause buyers to pull out. Refelting resolves this issue and protects the rest of the roof structure from ongoing water damage.
Is refelting covered by home insurance?
General wear and tear is not covered by most home insurance policies. However, if felt has failed as a direct result of storm damage, a claim may be possible. We can provide a written report of the condition if you need one for an insurance claim.
What’s the difference between refelting and re-roofing?
Refelting focuses on replacing the underlay beneath the tiles. Re-roofing typically means replacing the tiles or slates as well. If the tiles are in good condition, refelting alone is sufficient. We’ll tell you honestly whether you need one or both when we inspect.
Do I need planning permission to refelt a roof in Sheffield?
No — refelting an existing roof is maintenance work and doesn’t require planning permission. If you’re changing the profile or material of the roof significantly, different rules may apply. We’ll flag anything relevant when we assess the job.
Send us a few photos and your postcode. We’ll advise the next step — no obligation.
For garages specifically, our guide to garage roof replacement costs and timescales in Sheffield covers the refelt-vs-replace decision in full.