Roof felt acts as a protective barrier, shielding your property from wind, rain, snow, and even pests such as insects, bats, and birds. If you’re planning to refelt your roof, understanding the costs involved is essential for budgeting your project effectively.
Here’s a detailed guide to help you navigate the process and make informed decisions about roof refelting.
What is the Cost of Refelting a Roof?
The total cost of refelting a roof depends on several factors, including the size of the roof, its condition, and the materials used. Below is a general overview of the costs:
| Item | Range – Low | Range – High | Average Cost |
|---|---|---|---|
| Felt cost (per m²) | – | – | £50 |
| Medium-sized shed (£30 – £45 per m²) | £250 | £450 | £350 |
| Average flat roof garage | £1,000 | £2,000 | £1,500 |
| Full roof under tiles | £2,300 | £7,300 | £4,800 |
| Replacement roof (felt, ply deck, joists) | – | – | £200 per m² |
| Replacement roof (incl. fascias & guttering) | – | – | £300 per m² |
| Labour (per day) | £150 | £250 | £200 |
These are ballpark averages. It’s recommended to get quotes from local tradespeople for more accurate pricing.
Factors That Affect Roof Refelting Costs
Several factors can influence the final cost of your roof refelting project, including:
- Roof Size: Larger roofs require more materials and labour.
- Roof Age and Condition: Older roofs may need repairs before refelting.
- Material Quality: Higher-quality materials cost more but last longer.
- Accessibility: Roofs requiring scaffolding or special access can add to the cost.
- Location: Labour rates and material prices vary by region.
- Additional Repairs: Damaged joists or roof decks increase costs.
- Guttering and Fascias: Replacements for these add-ons will raise the price.
What Does Roof Felt Do?
Roof felt serves as a waterproof layer that protects your property from external elements. Its primary functions include:
- Acting as a moisture barrier to prevent water damage.
- Shielding the roof structure and underlying materials.
- Providing insulation and reducing heat loss.
- Offering temporary protection during roof construction.
Benefits of Replacing Roof Felt
Replacing worn or damaged roof felt is essential for maintaining the structural integrity of your roof. Key benefits include:
- Improved water resistance, reducing the risk of leaks.
- Enhanced protection for roof tiles and other materials.
- Increased insulation for better energy efficiency.
- Extended roof lifespan and reduced repair costs over time.
What Does Roof Felt Replacement Involve?
Roof felt replacement generally includes:
- Removing Old Roof Tiles: If applicable, tiles are removed to access the damaged felt.
- Inspecting the Roof Deck: Any structural issues are repaired.
- Replacing the Felt: A new layer of felt is applied and secured.
- Reapplying Roof Tiles: The roof is finished with tiles or shingles.
Minor damage can often be patched, but extensive issues may require a full replacement.
How Much Does it Cost to Replace Roof Felt?
- Under Tiles: Replacing felt under tiles costs an average of £4,800, depending on the roof size and tile type.
- Flat Roof Garage: Refelting a flat roof garage costs around £1,500.
- Small Repairs: Replacing a small patch of felt (about 4m²) can cost as little as £200.
Additional Costs to Consider
- Structural Repairs: Damaged joists or decks require additional labour and materials.
- Scaffolding: May be necessary for high or hard-to-access roofs.
- Labour: Tradespeople charge daily rates, averaging £200 per day.
Why Do I Need to Replace Roof Felt?
Roof felt deteriorates over time, becoming brittle and less effective. Reasons to replace include:
- Leaks: Water infiltration leads to damp patches and structural damage.
- Aging: Old felt loses its flexibility and waterproofing abilities.
- Energy Efficiency: New felt improves insulation and reduces energy loss.
Useful Roof Felting Checklist
- Inspect your roof for damage or leaks.
- Determine whether a patch repair or full replacement is needed.
- Obtain quotes from experienced roofing professionals.
- Choose high-quality materials for long-lasting results.
- Hire certified tradespeople with relevant qualifications.
Conclusion
Keeping your roof felt in good condition is crucial for protecting your property and avoiding costly repairs. Whether you’re patching a small section or replacing the entire roof, understanding the costs and processes involved will help you plan effectively.
For more information and advice, visit Checkatrade and find trusted tradespeople in your area.
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