Felt Roofing Nottingham — Properly Installed, Built to Last
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If you have a felt roof on your garage, extension, porch, or outbuilding in Nottingham, this page is for you. Felt roofing remains one of the most common flat roof systems across the city — and one of the most misunderstood.
Some homeowners patch a roof that needs replacing. Others replace a roof that could have been repaired. We help you avoid both mistakes. At Nottingham House Extensions, we install, repair, and re-felt roofs across Nottingham and Nottinghamshire. We have over 20 years of hands-on experience working on local roofs and properties — from post-war semis in Bulwell to Victorian terraces in Mapperley and new-build extensions in Beeston. We also cover commercial felt roofing in the local area. Every job starts with a FREE drone roof survey, and you receive a written quote before any work begins. Call 0115-647-0560 to book your free drone roof survey and assessment today. |
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Why Nottingham Homes Have So Many Felt Roofs
Nottingham has one of the largest stocks of post-war housing in the East Midlands. Thousands of properties built between the 1950s and 1980s — across Clifton, Sherwood, Wollaton, Arnold, and Hucknall — were fitted with flat-roofed garages, rear kitchen extensions, lean-to porches, and bay window roofs as standard.
Felt was the go-to system for all of these structures. It still is — when it is specified and installed correctly.
Many of those original roofs are now at or near the end of their working life. A felt roof that was laid 15 to 20 years ago without regular maintenance is unlikely to see another winter without problems. Water that sits inside a roof structure through one cold Nottinghamshire winter can cause timber decay that costs far more to put right than the roof itself.
We work on felt roofs across Nottingham every week. We know exactly what the common failure points are on local housing types, and we will give you a straight, honest assessment — not a sales pitch. If you have any other type of roof that needs attending to or replacing then please go to our main roofing page at https://www.nottinghamhouseextensions.co.uk/new-roofs.html
Felt was the go-to system for all of these structures. It still is — when it is specified and installed correctly.
Many of those original roofs are now at or near the end of their working life. A felt roof that was laid 15 to 20 years ago without regular maintenance is unlikely to see another winter without problems. Water that sits inside a roof structure through one cold Nottinghamshire winter can cause timber decay that costs far more to put right than the roof itself.
We work on felt roofs across Nottingham every week. We know exactly what the common failure points are on local housing types, and we will give you a straight, honest assessment — not a sales pitch. If you have any other type of roof that needs attending to or replacing then please go to our main roofing page at https://www.nottinghamhouseextensions.co.uk/new-roofs.html
What Is Felt Roofing? A Plain-Language Explanation
Felt roofing — also called bitumen roofing or torch-on felt — is a layered flat roof system made from bitumen-modified membranes reinforced with polyester or fibreglass matting. The layers are bonded together and fused to the roof deck to create a continuous, waterproof surface.
It is used on:
Modern torch-on felt systems are a significant step forward from the older single-layer felt that many people picture. They use modified bitumen — either SBS or APP modified — which is more flexible, more resistant to UV breakdown, and better suited to the freeze-thaw conditions of a Nottinghamshire winter.
It is used on:
- Flat and low-pitch garage roofs
- Single-storey rear and side extensions
- Porch and lean-to roofs
- Bay window roofs
- Outbuildings and garden rooms
Modern torch-on felt systems are a significant step forward from the older single-layer felt that many people picture. They use modified bitumen — either SBS or APP modified — which is more flexible, more resistant to UV breakdown, and better suited to the freeze-thaw conditions of a Nottinghamshire winter.
Torch-On Felt vs Standard Felt — What the Difference Actually Means
Not all felt roofing performs the same way. This is one of the most important things to understand before agreeing to any roofing work.
Standard (Traditional) Felt
Traditional felt is bitumen-saturated material that is cold-bonded or nailed to the roof deck. It is still used on garden sheds and small outbuildings where budget is the only consideration. On a garage, porch, or house extension, it is not what we recommend. It has a shorter lifespan, degrades faster under UV exposure, and is more likely to crack at seams during Nottingham's freeze-thaw winters.
Torch-On Felt (Modified Bitumen)
Torch-on felt is the current industry standard for flat roof installations. Modified bitumen membranes are fused to the deck and to each other using a gas torch, creating a fully bonded, seamless waterproof barrier with no cold joins or loose edges.
A correctly installed three-layer torch-on system with a quality mineral cap sheet will typically last 15 to 25 years in Nottinghamshire's climate — and significantly longer with basic annual maintenance.
We specify quality materials on every job. You get a proper roof, built to last — not a quick fix that fails within a few years.
A correctly installed three-layer torch-on system with a quality mineral cap sheet will typically last 15 to 25 years in Nottinghamshire's climate — and significantly longer with basic annual maintenance.
We specify quality materials on every job. You get a proper roof, built to last — not a quick fix that fails within a few years.
The 10 Warning Signs Your Felt Roof Needs Attention
Felt roofs rarely fail all at once. The signs develop gradually — and catching them early saves you money.
Here is what to look for on the roof surface and inside the room below:
On the roof surface:
Inside the building:
Older properties in Sherwood, Bulwell, Clifton, and Mapperley often have felt roofs that are well past their original service life. If your roof is showing more than one of these signs, have it surveyed before autumn.
We offer a FREE drone roof survey so you can see exactly what is happening before committing to any work.
Here is what to look for on the roof surface and inside the room below:
On the roof surface:
- Blistering or bubbling in the felt
- Visible splits or cracks, particularly along seams and at edges
- Felt lifting, shrinking, or pulling away from the fascia or parapet wall
- Mineral granules washing off the cap sheet into the gutters
- Heavy moss or algae growth sitting against the felt
- Water pooling and sitting on the roof after rainfall
Inside the building:
- Damp patches or water stains on the ceiling directly below
- A musty smell from the room beneath the roof
- Soft or spongy timber when you walk on the roof surface
- Timber decay visible at the roof edge or fascia boards
Older properties in Sherwood, Bulwell, Clifton, and Mapperley often have felt roofs that are well past their original service life. If your roof is showing more than one of these signs, have it surveyed before autumn.
We offer a FREE drone roof survey so you can see exactly what is happening before committing to any work.
When a Repair Is Enough — And When Your Roof Needs Re-Felting
This is the question we hear most often — and the honest answer depends entirely on what we find during the survey.
A Repair Is the Right Call When:
A Full Re-Felt Makes More Sense When:
We never recommend a full replacement when a repair will genuinely hold. We survey the roof, show you what we find, and give you a straight recommendation. Homeowners across Nottingham — from Carlton to West Bridgford — regularly contact us after a previous patch repair has failed within a season. When we survey those roofs, the answer is nearly always the same: the felt was too far deteriorated for a patch to hold long-term.
A Repair Is the Right Call When:
- The damage is in one specific area — a split seam, small puncture, or lifted edge
- The felt is under 12 years old and otherwise in sound condition
- The timber decking beneath is dry and structurally solid
- Flashings have lifted but the main roof surface remains intact
A Full Re-Felt Makes More Sense When:
- The felt shows widespread cracking, blistering, or surface breakdown
- The roof has been patched more than once and keeps failing
- Water has been sitting on the surface for extended periods
- The decking boards beneath are soft, rotted, or saturated
- The felt is shrinking and pulling away from edges across the full perimeter
- The roof is over 15 years old and showing multiple failure signs
We never recommend a full replacement when a repair will genuinely hold. We survey the roof, show you what we find, and give you a straight recommendation. Homeowners across Nottingham — from Carlton to West Bridgford — regularly contact us after a previous patch repair has failed within a season. When we survey those roofs, the answer is nearly always the same: the felt was too far deteriorated for a patch to hold long-term.
How We Install or Re-Felt a Roof in Nottingham — Step by Step
Knowing exactly what happens on the day removes the uncertainty. Here is our standard process for every felt roof installation or re-roof in Nottingham.
Step 1 — Free Drone Roof Survey We inspect the roof deck, existing felt layers, drainage falls, and flashings. Our free drone survey lets you see the full picture clearly before any decision is made. No guesswork. No hidden surprises.
Step 2 — Strip the Old Felt All existing felt is removed and disposed of responsibly. Stripping back to the deck is the only way to fully assess the timber beneath — and it reveals hidden damage that a patch repair would simply cover over.
Step 3 — Replace Any Damaged Decking Any soft, rotted, or water-damaged boards are replaced with solid new decking. This is the step that many cheap re-felts skip — and the reason those roofs fail again quickly. We do not skip it.
Step 4 — Lay the Base Layer A perforated underlay or vapour control layer is secured to the deck. This allows upper felt layers to flex without cracking and helps manage moisture within the roof structure.
Step 5 — Apply Torch-On Layers Each layer of torch-on felt is applied using a gas torch, melting the bitumen backing and bonding each layer firmly to the one below. Seams are overlapped and fully heat-sealed. No cold joins.
Step 6 — Dress Edges, Upstands, and Flashings Edge trims, upstand details, and all flashings around pipes, vents, and parapet walls are sealed and dressed correctly. This is where many cheaper installations fail — and where we pay close attention on every single job.
Step 7 — Final Inspection and Clean-Up We clear drainage outlets, inspect every seam and edge, and leave the site clean. Most domestic felt jobs on garages and extensions across Nottingham are completed within one day.
Step 1 — Free Drone Roof Survey We inspect the roof deck, existing felt layers, drainage falls, and flashings. Our free drone survey lets you see the full picture clearly before any decision is made. No guesswork. No hidden surprises.
Step 2 — Strip the Old Felt All existing felt is removed and disposed of responsibly. Stripping back to the deck is the only way to fully assess the timber beneath — and it reveals hidden damage that a patch repair would simply cover over.
Step 3 — Replace Any Damaged Decking Any soft, rotted, or water-damaged boards are replaced with solid new decking. This is the step that many cheap re-felts skip — and the reason those roofs fail again quickly. We do not skip it.
Step 4 — Lay the Base Layer A perforated underlay or vapour control layer is secured to the deck. This allows upper felt layers to flex without cracking and helps manage moisture within the roof structure.
Step 5 — Apply Torch-On Layers Each layer of torch-on felt is applied using a gas torch, melting the bitumen backing and bonding each layer firmly to the one below. Seams are overlapped and fully heat-sealed. No cold joins.
Step 6 — Dress Edges, Upstands, and Flashings Edge trims, upstand details, and all flashings around pipes, vents, and parapet walls are sealed and dressed correctly. This is where many cheaper installations fail — and where we pay close attention on every single job.
Step 7 — Final Inspection and Clean-Up We clear drainage outlets, inspect every seam and edge, and leave the site clean. Most domestic felt jobs on garages and extensions across Nottingham are completed within one day.
Felt Roofing Compared to EPDM Rubber and GRP Fibreglass
Felt is one of three main flat roofing systems we install on Nottingham properties. Each one suits a different situation. We give you an honest recommendation based on your building and budget — not on which product carries the highest margin.
Torch-On Felt Best for garages, outbuildings, porches, and budget-focused projects. A correctly installed torch-on felt system typically lasts 15 to 25 years. It is the most affordable flat roofing option and suits the vast majority of smaller flat roofs across Nottingham.
EPDM Rubber Roofing Best for larger flat roofs and house extensions. EPDM is a single-sheet rubber membrane with minimal joins, which means fewer weak points and a longer lifespan of 25 to 40 years. It handles Nottinghamshire's freeze-thaw winters particularly well and requires very little ongoing maintenance.
GRP Fibreglass Roofing Best for extensions, walkable roof areas, and long-term installs. GRP forms a seamless, rigid surface with no joins across the roof at all. It is trafficable, highly durable, and typically lasts 25 to 50 years. It is our recommended system for most new house extensions in Nottingham.
If felt roofing suits your garage or outbuilding, it remains a proven and practical choice. If you are planning a new extension and want a roof that lasts for decades with minimal upkeep, EPDM or GRP may offer better long-term value. We carry out all three systems and discuss the right fit with you at survey stage — with no pressure to choose the most expensive option.
Torch-On Felt Best for garages, outbuildings, porches, and budget-focused projects. A correctly installed torch-on felt system typically lasts 15 to 25 years. It is the most affordable flat roofing option and suits the vast majority of smaller flat roofs across Nottingham.
EPDM Rubber Roofing Best for larger flat roofs and house extensions. EPDM is a single-sheet rubber membrane with minimal joins, which means fewer weak points and a longer lifespan of 25 to 40 years. It handles Nottinghamshire's freeze-thaw winters particularly well and requires very little ongoing maintenance.
GRP Fibreglass Roofing Best for extensions, walkable roof areas, and long-term installs. GRP forms a seamless, rigid surface with no joins across the roof at all. It is trafficable, highly durable, and typically lasts 25 to 50 years. It is our recommended system for most new house extensions in Nottingham.
If felt roofing suits your garage or outbuilding, it remains a proven and practical choice. If you are planning a new extension and want a roof that lasts for decades with minimal upkeep, EPDM or GRP may offer better long-term value. We carry out all three systems and discuss the right fit with you at survey stage — with no pressure to choose the most expensive option.
Keeping Your Felt Roof in Good Condition — A Practical Maintenance Guide
A felt roof does not need constant attention — but ignoring it entirely will shorten its life significantly. Nottinghamshire's combination of heavy autumn leaf fall, wet winters, and freeze-thaw cycles puts real pressure on flat roofs. Small problems caught early cost very little to fix.
Follow these steps to protect your felt roof year-round:
Ask us about UV-resistant roof coatings if your felt roof is sound but starting to age. Applied to a clean, dry surface, these coatings protect the cap sheet and can extend the working life of an existing roof by several years — at a fraction of the cost of a full re-felt.
Follow these steps to protect your felt roof year-round:
- Clear the surface and gutters every autumn. Leaf fall in tree-lined areas like Wollaton, Sherwood, and Carlton blocks drainage outlets and causes water to pond on the felt surface — accelerating deterioration.
- Check seams and edges after hard frosts. Nottinghamshire's freeze-thaw cycles crack seams and lift felt at edges. Caught in spring, these are quick, low-cost repairs.
- Inspect flashings and upstands once a year. Lifted sealant, gaps at edge trims, and cracked bitumen around upstands are the most common early failure points.
- Do not pressure wash the roof. High-pressure water damages the mineral cap sheet and forces water under seams. It causes more damage than it fixes.
- Act on small leaks immediately. Water inside a roof void travels before it appears as a damp patch on the ceiling. The longer it sits, the more timber it damages.
- Book a professional check every two years. We can identify early signs of wear that are not visible from ground level — including via our free drone survey.
Ask us about UV-resistant roof coatings if your felt roof is sound but starting to age. Applied to a clean, dry surface, these coatings protect the cap sheet and can extend the working life of an existing roof by several years — at a fraction of the cost of a full re-felt.
Areas We Work — Felt Roofing Across Nottingham and Nottinghamshire
We carry out felt roofing, re-felting, flat roof repairs, and flat roof surveys across every part of Nottingham and the wider Nottinghamshire area. Below are the main towns, neighbourhoods, and postcodes we regularly work in:
Nottingham City and Inner Areas
South and West Nottingham
East and North Nottingham
Surrounding Areas
Not sure if we cover your postcode? Call 0115-647-0560 and we will confirm straight away.
Nottingham City and Inner Areas
- Nottingham City Centre — NG1
- Radford, Forest Fields, Hyson Green, Lenton — NG7
- Mapperley, Carlton, St Ann's — NG3
- Sherwood, Arnold, Bestwood, Carrington — NG5
- Bulwell, Old Basford, Bestwood Village — NG6
South and West Nottingham
- West Bridgford, The Meadows, Sneinton — NG2
- Wollaton, Aspley, Bilborough — NG8
- Beeston, Stapleford, Chilwell, Trowell — NG9
- Clifton, Ruddington, Gotham — NG11
East and North Nottingham
- Carlton, Gedling, Netherfield — NG4
- Radcliffe on Trent, Cotgrave, Keyworth — NG12
- Calverton, Lowdham — NG14
- Hucknall — NG15
- Kimberley, Eastwood, Nuthall — NG16
- Bingham — NG13
Surrounding Areas
- Long Eaton, Sawley, Sandiacre — NG10
- Derby and Derbyshire
- Mansfield, Sutton in Ashfield, Kirkby in Ashfield
- Ilkeston, Eastwood, Heanor
Not sure if we cover your postcode? Call 0115-647-0560 and we will confirm straight away.
Frequently Asked Questions — Felt Roofing in Nottingham
What is the difference between standard felt roofing and a torch-on felt system?
Standard felt is cold-bonded or nailed to the deck and typically lasts 10–15 years. Torch-on felt uses modified bitumen layers fused together with heat, creating a fully bonded waterproof barrier with stronger seams, better UV resistance, and improved flexibility in cold weather. For any garage, extension, or porch roof in Nottingham, torch-on is the system we recommend and install.
How do I know if my felt roof needs repairing or replacing completely?
If the damage is in one localised area and the decking beneath is dry and solid, a repair is usually the right option. If the felt is cracked across the surface, the roof has been patched multiple times without success, or the decking is water-damaged, a full re-felt gives far better long-term value. We survey every roof before advising — we never guess.
Why is my felt roof blistering, and what should I do?
Blisters form when moisture or air becomes trapped beneath the felt layers — either during installation or as the felt deteriorates over time. Small blisters on an otherwise sound roof can sometimes be repaired. Widespread blistering across the surface usually means the roof needs re-felting. Do not ignore blisters — if they burst, water enters the roof structure directly and timber damage follows quickly.
How long will a felt flat roof last on a garage or house extension?
A torch-on felt system installed with quality materials typically lasts 15 to 25 years on a garage or extension in Nottingham. The lifespan depends on installation quality, drainage fall design, material grade, and whether the roof receives basic annual maintenance. Traditional single-layer felt on a small shed may last 10 to 15 years.
Is felt roofing still worth choosing, or are EPDM and GRP better now?
Felt remains a proven, practical option for garages, outbuildings, and smaller flat roofs where budget matters. For a new house extension where longevity and minimal maintenance are the priority, EPDM rubber or GRP fibreglass may offer better long-term value. We install all three systems and give you an honest comparison at survey stage — there is no pressure to choose the most expensive option.
What maintenance does a felt roof need to make it last longer?
Clear the surface and gutters every autumn, check seams and flashings after winter frosts, and have a professional inspection every two years. Avoid pressure washing. Act on small leaks immediately rather than leaving them. A UV-resistant coating applied to a clean, sound surface can also extend the working life of an ageing felt roof by several years.
Can a felt roof be walked on without causing damage?
Light foot traffic on a torch-on felt roof with a solid deck is generally manageable, but felt is not designed as a regular walking surface. Avoid putting weight on areas where the deck may be soft or the felt is near end of life. If you need regular access to a flat roof — for maintenance, for example — a GRP fibreglass surface is the more appropriate system.
What are the most common reasons a felt roof fails early?
Poor installation is the leading cause — specifically cold joins, inadequate seam bonding, and incorrect drainage falls that allow water to sit on the surface. Using low-grade materials, skipping deck checks before re-felting, and poor edge detailing at upstands and flashings are also frequent causes of early failure. Regular maintenance significantly reduces the risk of premature failure.
How quickly can a felt roof be installed, and will it disrupt my day?
Most domestic felt roof installations on garages and extensions in Nottingham are completed within one day. Larger or more complex roofs may take two days. Disruption is minimal — we work on the roof externally and leave the site clean at the end of every day. We also schedule felt work during dry weather conditions for the best possible bond.
Do I need planning permission to re-felt a flat roof in Nottingham?
Like-for-like re-felting is generally permitted development and does not require planning permission. If your property is in a conservation area — such as parts of West Bridgford, The Park Estate, or Mapperley Park — or if you are changing the roof's form or height, you may need to check with Nottingham City Council Building Control. We advise you on this as part of the survey process.
Is felt roofing waterproof?
Yes — a correctly installed felt roof is fully waterproof. Modern torch-on systems use multiple bonded layers of bitumen-modified membrane to create a continuous waterproof barrier. The cap sheet — the top layer — is mineral-surfaced to protect the layers beneath from UV exposure, foot traffic, and weather. A felt roof that is leaking has either failed at a seam, an edge detail, or a flashing — not across the whole surface. That is why a proper survey always identifies the root cause before any repair work begins.
Does building regulations approval apply to felt roofing work in Nottingham?
If re-felting work covers 25% or more of the total roof area, you may need to notify Nottingham City Council Building Control. Like-for-like patch repairs on a small area generally do not require notification. Changing insulation specification, roof structure, or material type may also trigger a Building Regulations requirement. We guide you through this as part of our service — you do not need to handle it alone.
Ready to Book? Here Is Why Nottingham Homeowners Choose Us
If your felt roof is leaking, blistering, cracking, or simply overdue for a proper check — do not leave it another season. Water damage inside a roof structure gets worse quickly. What is a straightforward re-felt today can become a full decking replacement job by spring.
Here is what you get when you work with Nottingham House Extensions:
Your roof protects everything underneath it. Getting it right matters — and it starts with an honest survey from a team that knows Nottingham's housing stock inside out.
Call us today on 0115-647-0560 or visit nottinghamhouseextensions.co.uk to arrange your free felt roofing survey. No obligation. No deposit. Just a straight answer about what your roof needs.
Here is what you get when you work with Nottingham House Extensions:
- FREE drone roof survey — see the exact condition of your roof before committing to anything
- Free, written, itemised quotation — no hidden costs, no nasty surprises
- Over 20 years of experience on Nottingham and Nottinghamshire properties
- Torch-on felt, EPDM, and GRP systems — we install all three and recommend the right one for your roof
- Honest advice — we recommend what your roof actually needs, not the most expensive option
- Residential and commercial — garages, extensions, porches, outbuildings, and flat-roof homes
Your roof protects everything underneath it. Getting it right matters — and it starts with an honest survey from a team that knows Nottingham's housing stock inside out.
Call us today on 0115-647-0560 or visit nottinghamhouseextensions.co.uk to arrange your free felt roofing survey. No obligation. No deposit. Just a straight answer about what your roof needs.
Nottingham House Extensions
Professional Building & Roofing Services
FREE Design Consultation and FREE Quotation
Call Now on
0115-647-0560
Professional Building & Roofing Services
FREE Design Consultation and FREE Quotation
Call Now on
0115-647-0560