Cost of Felt Roofing Per Square Metre
A complete UK guide to felt roofing prices, labour charges, regional variations, and money-saving tips.
In the UK, the cost of felt roofing per square metre typically ranges from £25 to £80 per m² including labour and materials. Budget torch-on felt starts around £25–£35/m², standard systems average £35–£55/m², and premium 3-layer high-performance felt roofing costs £50–£80/m². For a typical 25 m² garage roof, expect to pay between £875 and £2,000 depending on the system chosen.
- Average Cost of Felt Roofing Per Square Metre
- Labour Costs for Felt Roofing
- Material Costs Breakdown
- Factors That Affect the Price
- Regional Pricing Across the UK
- Full Cost Breakdown Table
- Real Project Cost Examples
- Cost Estimation Guide & Formula
- Common Mistakes That Increase Costs
- Hiring Checklist for Roofing Contractors
- Money-Saving Tips
- Frequently Asked Questions
Felt roofing remains one of the most popular flat-roof solutions for garages, extensions, sheds, and dormer windows across the UK. It offers a practical balance of affordability, durability, and ease of installation. Whether you are replacing a worn-out felt roof or installing one on a new build, understanding the true cost of felt roofing per square metre helps you budget accurately and avoid unexpected expenses. This guide breaks down every component—from material grades and labour rates to regional price differences and VAT considerations—so you can make an informed decision before hiring a contractor.
Average Cost of Felt Roofing Per Square Metre
The table below summarises the typical UK market rates for different grades of felt roofing systems. These figures are estimated market averages based on contractor quotations, supplier pricing, and industry research. Actual quotes will vary depending on your location, roof condition, and project complexity.
| Felt Roofing Grade | Material Cost (per m²) | Labour Cost (per m²) | Total Cost (per m²) | Typical Lifespan |
|---|---|---|---|---|
| Budget Basic Torch-On | £8 – £15 | £15 – £20 | £25 – £35 | 10–15 years |
| Standard 2-Layer System | £15 – £25 | £18 – £28 | £35 – £55 | 15–20 years |
| Premium 3-Layer High-Performance | £25 – £40 | £25 – £38 | £50 – £80 | 20–30 years |
| Felt Roof Repair (patch) | £5 – £12 | £20 – £35 (per hour) | £60 – £180 (per repair) | N/A |
*Prices are estimated market averages for the UK. VAT may or may not be included—always confirm with your contractor.
Labour Costs for Felt Roofing
Labour is a significant portion of the total felt roofing cost. Most UK roofing contractors charge either a day rate or a per-square-metre rate. The table below shows the typical labour pricing structures you are likely to encounter.
| Labour Pricing Model | Typical Rate | Best For |
|---|---|---|
| Per Square Metre | £15 – £38 per m² | Full roof replacements & new installations |
| Day Rate (per roofer) | £180 – £280 per day | Smaller jobs, repairs, or complex roofs |
| Hourly Rate | £25 – £40 per hour | Emergency repairs & minor patching |
| Fixed Project Quote | Varies by roof size | Complete felt roof installations |
A typical two-person roofing team can install approximately 20–35 m² of felt roofing per day, depending on the roof's complexity and the number of penetrations such as vents or skylights.
Material Costs Breakdown
Felt roofing materials vary significantly in quality. Understanding what each grade offers helps you choose the right system for your budget and durability requirements.
| Material Type | Cost per m² (Supply Only) | Key Features |
|---|---|---|
| Basic Torch-On Felt (Underlay) | £4 – £7 | Entry-level, suitable for sheds & outbuildings |
| Standard Torch-On Cap Sheet | £7 – £14 | Mineral-finished, UV-resistant surface layer |
| Reinforced Base Layer (3-Layer System) | £8 – £16 | Adds structural strength & tear resistance |
| Premium SBS-Modified Felt | £15 – £28 | Superior flexibility, ideal for temperature extremes |
| Adhesive, Primer & Sealants | £2 – £5 per m² (combined) | Essential ancillaries for proper installation |
Factors That Affect the Price
Several variables influence the final cost of felt roofing per square metre. Being aware of these helps you understand why quotes differ between contractors.
- Roof Size: Larger roofs benefit from economies of scale, reducing the per-m² rate slightly.
- Roof Accessibility: Difficult access requiring scaffolding or safety equipment adds to labour costs.
- Existing Roof Condition: If the old roof needs stripping and disposal, expect additional charges of £8–£15 per m².
- Roof Complexity: Multiple penetrations (chimneys, skylights, vents) increase labour time.
- Insulation Requirements: Adding or upgrading insulation beneath the felt adds material and labour costs.
- Waste Removal: Disposal of old roofing materials may be charged separately or included in the quote.
- Seasonality: Roofing contractors may charge premium rates during peak demand in late spring and summer.
Regional Pricing Across the UK
Where you live significantly impacts the cost. London and the South East consistently command higher prices due to elevated labour rates and operating costs. The table below compares regional variations for a standard 2-layer felt system.
| Region | Average Cost per m² (Standard System) | Compared to UK Average |
|---|---|---|
| London | £48 – £68 | +15% to +25% |
| South East | £42 – £60 | +10% to +15% |
| Midlands | £35 – £52 | Near average |
| North England | £30 – £48 | -5% to -10% |
| Scotland | £32 – £50 | -5% to -8% |
| Wales | £30 – £47 | -5% to -10% |
| Northern Ireland | £28 – £45 | -8% to -12% |
Full Cost Breakdown Table
For a typical 25 m² garage roof using a standard 2-layer felt system in the Midlands, here is how the total project cost breaks down:
| Cost Component | Estimated Cost | Notes |
|---|---|---|
| Felt Underlay (25 m² × £6) | £150 | Base layer material |
| Cap Sheet (25 m² × £11) | £275 | Mineral-finished top layer |
| Adhesive, Primer & Sealants | £80 | Ancillary materials |
| Labour (2 days × 2 roofers at £220/day) | £880 | Professional installation |
| Waste Removal & Disposal | £120 | Old roof strip & skip hire |
| Scaffolding (if required) | £0 – £350 | Only for elevated or difficult access |
| Estimated Total (excl. VAT) | £1,505 – £1,855 | ~£60–£74 per m² all-in |
| VAT at 20% (if applicable) | £301 – £371 | Confirm with contractor |
| Estimated Total (incl. VAT) | £1,806 – £2,226 | Final out-of-pocket cost |
Real Project Cost Examples
🛠️ Small Shed Roof — 8 m² (Budget)
System: Basic torch-on 2-layer felt
Labour Rate: £180/day (1 roofer, 1 day)
Estimated Labour Cost: £180
Estimated Materials: £100
Estimated Total: £280 – £350 (approx. £35–£44 per m²)
🏠 Garage Roof — 25 m² (Standard)
System: Standard 2-layer torch-on felt
Labour Rate: £220/day (2 roofers, 1.5 days)
Estimated Labour Cost: £660
Estimated Materials: £450
Estimated Total: £1,110 – £1,500 (approx. £44–£60 per m²)
🏢 Extension Flat Roof — 40 m² (Premium)
System: Premium 3-layer high-performance felt
Labour Rate: £250/day (2 roofers, 2.5 days)
Estimated Labour Cost: £1,250
Estimated Materials: £1,100
Estimated Total: £2,350 – £3,200 (approx. £59–£80 per m²)
Cost Estimation Guide & Formula
Use this simple formula to estimate your felt roofing project cost:
Total Cost = (Roof Area in m² × Material Cost per m²) + (Roof Area in m² × Labour Cost per m²) + Additional Costs (scaffolding, waste removal, VAT)
Example Calculation: For a 30 m² roof using a standard system at £45/m² all-in: 30 × £45 = £1,350 (excl. VAT). Add £120 for waste removal and £270 VAT (20%) = £1,740 total.
Common Mistakes That Increase Project Costs
- Choosing the cheapest felt system for a roof over living space—premium 3-layer systems save money long-term by avoiding early replacement.
- Ignoring preparation work: Failing to replace rotten decking before laying new felt leads to premature failure.
- Hiring solely on price: The lowest quote often excludes essentials like waste removal, primer, or proper sealing.
- Forgetting VAT: Many homeowners budget based on pre-VAT quotes and face a 20% surprise.
- Ordering insufficient materials: Always order 5–10% extra felt to account for overlaps and offcuts.
- Not requesting written quotations: Verbal estimates leave room for disputes and unexpected charges.
Hiring Checklist for Roofing Contractors
- Get at least three written quotations from different contractors.
- Check previous work—ask for photos or references from recent felt roofing jobs.
- Confirm the contractor has public liability insurance.
- Confirm whether VAT is included in the quoted price.
- Ask exactly what is included: materials, labour, waste removal, scaffolding, and any guarantees.
- Request a written estimate with a breakdown of all costs.
- Confirm the project timeline and start date in writing.
- Confirm waste removal and who is responsible for skip hire.
- Check if the contractor offers a workmanship guarantee (typically 5–10 years).
Money-Saving Tips for Felt Roofing
- Schedule work in autumn or early spring when demand is lower and contractors may offer better rates.
- Bundle projects: If you have multiple roofing needs, negotiate a combined price.
- Supply materials yourself only if you are confident in specifying the correct products—incorrect materials can void contractor guarantees.
- Maintain your existing roof: Regular inspections and minor repairs can extend the life of a felt roof by several years, delaying full replacement costs.
Frequently Asked Questions
For a typical UK property, felt roofing costs between £25 and £80 per square metre, including labour and materials. Budget torch-on felt starts around £25–£35/m², standard systems range from £35–£55/m², and premium 3-layer high-performance felt roofs cost £50–£80/m². The final price depends on your location, roof accessibility, and the grade of materials selected.
2-layer felt roofing uses an underlay and a cap sheet, making it suitable for sheds and outbuildings with a lifespan of 10–15 years. 3-layer felt roofing adds a reinforced base layer beneath the underlay and cap sheet, providing superior waterproofing, a 20–30 year lifespan, and better resistance to ponding water and UV exposure. For any roof over living space, a 3-layer system is strongly recommended.
A properly installed felt roof typically lasts between 10 and 30 years depending on the system. Basic 2-layer felt lasts 10–15 years, standard torch-on felt lasts 15–20 years, and premium 3-layer high-performance systems can last 20–30 years with regular maintenance and inspection.
While DIY felt roofing is possible for small, flat structures like shed roofs, hiring a professional is strongly recommended for any roof over living space. Professional installation ensures correct sealing, proper torch-on application, and compliance with building regulations. DIY mistakes can lead to costly water damage that far exceeds the savings on labour.
Most UK contractor quotations for felt roofing exclude VAT, which is added at the standard rate of 20%. However, some contractors include VAT in their quoted price. Always confirm with your contractor whether VAT is included before accepting a quotation to avoid a 20% surprise on your final bill.
Common signs include visible cracks, blisters, or splits in the felt surface, persistent leaks or water stains on ceilings, sagging areas that hold standing water, and felt that has lost its granular surface coating. If your roof is over 15 years old and showing multiple signs of wear, replacement is usually more cost-effective than repeated patching.
Key factors include the type of felt system (2-layer vs 3-layer), roof accessibility and height, existing roof condition and whether the old roof needs stripping, regional labour rates, roof complexity with penetrations like skylights or vents, and waste disposal requirements. Seasonal demand can also influence contractor pricing.
How We Estimated These Prices
Our pricing estimates are compiled using a combination of UK contractor quotations, supplier material pricing, industry market averages, and regional pricing comparisons. We consider average labour rates, material costs, regional differences, project complexity, and historical market trends. Where official government figures are unavailable, we clearly state that the values represent estimated market averages rather than fixed prices.
Sources & Methodology
The pricing information in this article has been compiled using:
- UK roofing contractor quotations from multiple regions
- Supplier pricing from major UK roofing material distributors
- Industry averages published by construction trade bodies
- Market research across England, Scotland, Wales, and Northern Ireland
- Government guidance on building regulations where applicable
All figures are estimated market averages intended to provide a realistic guide for budgeting purposes. Individual quotes will vary based on specific project requirements and local market conditions.