Felt Roofing in Nottingham — Expert Installation, Repair & Re-Felting

If you have a felt roof that is leaking, blistering, or past its best, you are in the right place. We carry out felt roofing in Nottingham for garages, extensions, porches, outbuildings, and flat roof homes across the city and Nottinghamshire. We survey the roof, give you an honest assessment, and carry out the work to a high standard — with no deposit required.

We are Nottingham Builders, based in Long Eaton, NG10. We serve every area of Nottingham — from Beeston and West Bridgford to Arnold, Hucknall, Mapperley, and beyond. We also offer a FREE drone roof survey so you can see the exact condition of your roof before any work begins — no guesswork, no surprises.

Call us on 0115-647-3317 for a free, no-obligation quote. You pay only when the work is finished and you are satisfied.

We offer a free drone roof survey and no-obligation quotation on every job.

What Is Felt Roofing?

Felt roofing — also known as bitumen roofing or torch-on felt — is one of the most widely used flat roof systems in the UK. It has been used on garages, extensions, porches, and outbuildings for over a century. Modern felt roofing consists of layers of bitumen-modified felt, fused together to create a waterproof, weather-resistant barrier across the roof surface.

In Nottingham and across Nottinghamshire, felt roofing is found on tens of thousands of properties. It remains a reliable, cost-effective choice — particularly for garages, single-storey extensions, lean-to roofs, and outbuildings where budget matters and a proven system is needed.

How to Tell Your Felt Roof Needs Replacing

A felt roof does not always fail all at once. In Nottingham, wet winters and freeze-thaw conditions wear felt down gradually. Blistering, cracking, and lifted edges are often the first signs.

Check your roof — and the room beneath it — for these warning signs:

• Damp patches or water stains on the ceiling below the roof
• Blistering or bubbling on the felt surface
• Felt edges curling away from the fascia or parapet wall
• Visible splits or tears, especially at seams and joints
• Persistent leaks that keep returning after patching
• Ponding water sitting on the roof surface after rainfall
• Soft or spongy decking underfoot when you walk on the roof
• Moss or heavy algae growth trapping moisture against the felt
• A musty smell coming from the room directly below
• Sagging or uneven areas across the roof surface

Older felt roofs across Nottingham — particularly on garages and rear extensions in areas like Sherwood, Mapperley, and Beeston — are often 15–20 years old and approaching the end of their working life. If your roof shows more than one of these signs, have it surveyed before winter.

We offer a free roof survey, including a free drone roof assessment, so nothing is hidden and no guesswork is involved. Call 0115-647-3317 to book. No charge, no obligation.

When Felt Roof Repair Is Enough — And When It Isn't

Not every felt roof problem needs a full replacement. A proper survey tells you which option is right. We will always recommend the most cost-effective solution for your situation. We never recommend a full replacement when a repair will do the job properly.
A repair is likely the right choice when:

• The damage is localised — a single split, lifted seam, or small puncture
• The felt is under 10–12 years old and otherwise in sound condition
• The timber decking underneath is dry and structurally solid
• Flashings or upstand edges have lifted but the main surface is intact
• A small blister has formed but has not yet burst or caused a leak

A full re-felt or replacement makes more sense when:

• The felt is over 15 years old and showing widespread deterioration
• Multiple blisters, cracks, or leaks are spread across the surface
• The decking boards underneath are soft, rotted, or water damaged
• The roof has been patched repeatedly but continues to fail
• Water has been ponding on the roof surface for extended periods
• The existing felt is shrinking, pulling away from edges, or showing cracking across the cap sheet

Homeowners in Long Eaton, Carlton, and Bulwell often contact us after a previous patch repair has failed within a year or two. In those cases, the underlying felt was simply too far gone to hold a repair. A survey confirms this within minutes.

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Torch-On Felt vs Traditional Felt — Which Suits Your Nottingham Roof

There are two main types of felt roofing used on properties across Nottingham. Understanding the difference helps you make the right choice.
Traditional Felt RoofingTraditional felt is an older system using layers of bitumen-saturated felt, nailed or cold-bonded to the roof deck. It is still used on sheds, small outbuildings, and low-budget applications. It is the most affordable entry-level option but has a shorter lifespan — typically 10 to 15 years in Nottingham's climate. Traditional felt is more vulnerable to UV degradation and freeze-thaw cracking over time.
Torch-On Felt Roofing (Modified Bitumen)Torch-on felt is the modern standard for flat roof installations. It uses modified bitumen felt — either SBS (Styrene Butadiene Styrene) or APP (Atactic Polypropylene) modified — fused to the deck and to each layer above it using a gas torch. This creates a strong, fully bonded waterproof barrier with no cold joins or loose seams.
A well-installed 3-layer torch-on system with a quality mineral cap sheet will typically last 15 to 25 years. Nottinghamshire's wet winters and freeze-thaw cycles make torch-on the more reliable choice for garages, extensions, and porch roofs.
At Nottingham Builders, we use BBA approved materials on every felt roof we install. We specify quality mineral cap sheets that protect the layers below from UV damage and surface wear. If your roof is on a garage, house extension, porch, or any flat roof that needs to last, torch-on felt is almost always the right system.

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How a Felt Roof Is Installed or Re-Felted in Nottingham

Knowing what happens on the day removes the uncertainty. Here is exactly how we carry out a felt roof installation or re-felt in Nottingham.

1. Survey and assessment — We inspect the roof deck, existing felt, drainage falls, and any flashings. We check the timber for rot or movement and advise if boards need replacing before the felt is laid. Our free drone survey can be carried out at this stage.
2. Strip the old felt — All existing felt is stripped and disposed of responsibly. This gives us a clear view of the deck condition underneath — and reveals any hidden damage.
3. Replace damaged decking — Any soft, rotted, or water-damaged boards are replaced with new, solid decking. This is the stage that many cheap re-felts skip — and the reason those roofs fail again quickly.
4. Fit the base layer — A perforated underlay or vapour control layer is laid and secured to the deck. This allows the upper layers to move slightly without cracking and helps manage moisture within the roof build-up.
5. Apply the intermediate and cap layers — Each layer of torch-on felt is applied using a gas torch, melting the bitumen backing to bond it firmly to the layer below. Seams are overlapped by a minimum of 75mm and fully heat-sealed.
6. Seal edges, upstands, and flashings — All edge trims, upstand details, and any flashings around pipes, vents, or parapet walls are sealed and dressed correctly. This is where many DIY and cheap installations fail — poorly dressed edges and flashings are the most common source of felt roof leaks.
7. Final check and clean-up — We check drainage outlets are clear, inspect every seam and edge, and leave the site clean. You get a written record of the work completed.

Most domestic felt re-roofs on garages and extensions in Nottingham are completed within one day. We schedule felt work during dry weather — spring and summer deliver the best bonding conditions.

How GRP Fibreglass Roofing Is Installed — Our Step-by-Step Process

Every long-lasting GRP roof starts with correct preparation. There are no shortcuts in the process, and the quality of the installation determines how the roof performs for the next 30 years. Here is what our process looks like on a typical Nottingham flat roof job.

Step 1 — Free Drone Survey and Assessment
We start with a thorough inspection of your existing roof, including a free drone survey where needed. We check the condition of the existing covering, the deck, the joists, and the drainage. If decking boards are soft or damaged, we replace them at this stage. We will give you a written quotation before any work begins — no hidden costs.

Step 2 — Deck Preparation
New OSB3 (Oriented Strand Board) is fixed to the roof deck where required. This gives the GRP a clean, flat, dimensionally stable base to bond to. GRP must be applied to a dry, sound surface — any moisture in the substrate will affect adhesion and long-term performance.

Step 3 — Edge Trims and Upstands
Aluminium edge trims and upstand trims are fixed into position first. These define the roof edge, give the GRP something solid to bond to, and create a neat, weathertight finish at the perimeter. On larger roofs over 50m², we fit expansion joints to allow for the thermal movement that Nottingham's seasonal temperature swings produce.

Step 4 — Fibreglass Laminate Application
A coat of polyester resin is applied to the deck. Fibreglass chopped strand matting is then rolled out into the wet resin and a second coat of resin is applied over the top. The matting and resin bond together as they cure into one rigid, continuous layer.

There are no joins in the field of the roof — the fibreglass runs as a single sheet from edge to edge. The matting weight we use is matched to how the roof will be used — 450g for light access, 600g for moderate foot traffic, and double-layer for balconies and walkways.

Step 5 — UV-Stable Topcoat
Once the laminate has fully cured, a UV-stable coloured topcoat is applied across the entire surface, including the trims. This is the layer that protects the fibreglass from sunlight, weather, and general wear. It gives the roof its finished appearance and can be matched to a colour of your choice. Standard finishes are dark grey and slate, though other colours are available.

Step 6 — Final Inspection and Clean-Up
We inspect the finished roof, check all drainage points and edges, and leave the site clean and tidy. Most residential jobs in Nottingham take one to three days from start to finish, depending on the size and complexity of the roof. We will not leave until you are fully satisfied with the result.

How Felt Roofing Compares to EPDM and GRP Flat Roof Systems

How Felt Roofing Compares to EPDM and GRP Flat Roof SystemsFelt is one of three main flat roof materials used on Nottingham properties. Each has its strengths — the right choice depends on your building, your budget, and how long you need the roof to last.
Felt (Torch-On Bitumen)

• Most affordable flat roofing option
• Good waterproofing when installed correctly with quality materials
• Lifespan of 15–25 years with a quality torch-on system
• Quick to install — most jobs completed in a single day
• Best suited to garages, outbuildings, porches, and budget-conscious extensions

EPDM Rubber Roofing

• Single-sheet synthetic rubber membrane with minimal joins
• Highly flexible — performs well through Nottinghamshire's freeze-thaw winters
• Lifespan of 25–40 years with proper installation
• Excellent choice for larger flat roof areas where fewer joins mean fewer weak points
• We are Firestone licensed installers -- view our rubber roofing page

GRP Fibreglass Roofing

• Seamless, rigid, and highly durable — no joins across the roof surface
• Walkable surface — the right choice for balconies, flat roof terraces, and accessible areas
• Lifespan of 25–50 years
• Our recommended choice for most extensions in Nottingham
• View our fibreglass roofing page

Felt is a proven, reliable system. For a garage roof or small outbuilding, it is often the most practical and cost-effective choice. For a new extension where you want a long-life, low-maintenance roof, EPDM or GRP may offer better long-term value. We discuss all three options at survey stage and give you a straight recommendation based on your building and budget — not on which product carries the highest margin.

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How to Keep a Felt Roof Working Longer in Nottingham's Climate

A felt roof needs less maintenance than most people expect — but ignoring it entirely will shorten its life. In Nottingham, the biggest risks are autumn leaf fall blocking drainage, standing water, and winter frost cracking seams. A small problem left through one winter can become a major repair by spring.
Follow these steps to protect your felt roof year-round:

• Clear the roof surface and gutters every autumn. Leaf fall in tree-lined areas like Wollaton, Sherwood, and Carlton is heavy. Blocked outlets cause water to pond and sit on the felt surface, accelerating deterioration.
• Check the surface after hard frosts. Nottinghamshire's freeze-thaw cycles can crack seams or split felt at edges. Caught early, these are quick, low-cost repairs.
• Inspect flashings and upstands once a year. These are the most common failure points. Look for lifted sealant, gaps at edges, or cracked bitumen around upstands, and reseal promptly.
• Do not pressure wash the roof. High-pressure water damages the mineral surface of the cap sheet and forces water under seams — it causes more damage than it fixes.
• Book a professional inspection every one to two years. We can identify early signs of wear that are not visible from ground level. Our free drone survey makes this quick and completely non-invasive.
• Act on small leaks immediately. Water tracking inside a roof void can travel a long way before it appears as a damp patch inside. The longer it sits, the more timber damage it causes.

Ask us about UV-resistant roof coatings if you want to extend the life of an existing felt roof. Applied to a clean, sound surface, these coatings protect the cap sheet and can add several years of reliable service life.

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Frequently Asked Questions — Felt Roofing in Nottingham

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How long does a felt roof last in the UK?

A modern torch-on felt roof installed with quality materials typically lasts 15 to 25 years in the UK. Traditional cold-bonded felt on a shed or garage may last 10 to 15 years. The lifespan depends on the quality of materials used, the skill of installation, drainage design, and how well the roof is maintained. In Nottingham's climate — with regular rainfall and freeze-thaw winters — a properly installed torch-on system with a mineral cap sheet consistently outperforms cheaper alternatives.

How much does it cost to replace or re-felt a roof in the UK?

The cost of re-felting a flat roof varies based on roof size, access, deck condition, and the number of layers required. On average, a standard garage re-felt in Nottingham ranges from several hundred pounds for a small area upwards for a larger garage or extension roof. Decking replacement, flashing work, and drainage improvements add to the final cost. We provide free, written, itemised quotes — you know exactly what you are paying for before any work starts. Call 0115-647-3317 to arrange a free survey and quote.

What are the signs that my felt roof needs replacing?

The main signs are persistent leaks, widespread blistering or cracking on the surface, felt edges curling or shrinking, soft or spongy decking underfoot, and water ponding after rainfall. A musty smell from the room below is also a common sign that moisture has been entering the roof structure undetected. If your felt roof is over 15 years old and showing any of these signs, it is worth having a professional survey. Our free drone survey shows the full roof condition clearly.

Can a felt roof be repaired rather than replaced?

Yes — if the damage is localised and the timber decking is dry and structurally sound. Small splits, lifted seams, or isolated blisters can often be repaired without a full replacement. We survey every roof before advising and always recommend repair where it is the right, cost-effective solution. If the felt is widespread and deteriorated across the whole surface, a re-felt gives better long-term value than repeated patch repairs.

What is the difference between torch-on felt and traditional felt roofing?

Traditional felt is cold-bonded or nailed to the roof deck and typically lasts 10–15 years. Torch-on felt uses modified bitumen layers fused together with heat, creating fully bonded seams and a stronger waterproof barrier that lasts 15–25 years. Torch-on felt also uses SBS or APP modified bitumen, which is more flexible and more resistant to UV degradation and temperature movement than traditional bitumen felt. For any roof on a garage, extension, or porch, torch-on is the recommended system.

Is felt roofing better than EPDM or GRP fibreglass?

Felt roofing is the most affordable flat roofing option and suits garages, outbuildings, and budget-focused projects. EPDM rubber and GRP fibreglass both offer longer lifespans — typically 25 to 50 years — and lower long-term maintenance. For a new house extension or a roof that needs to last for decades with minimal upkeep, EPDM or GRP may be the better investment. We carry out all three systems and give you an honest recommendation at the survey stage based on your building, budget, and priorities.

What are the most common problems with felt roofs?

The most common felt roof problems are blistering caused by trapped moisture, cracking and splitting at seams from freeze-thaw movement, ponding water from poor drainage falls, lifted or failed edges and flashings, and moss or algae growth trapping moisture against the surface. Most of these problems can be caught early and repaired at low cost. Left unattended over a winter, they frequently lead to deck damage and more extensive work.

Do I need planning permission to re-felt a flat roof in Nottingham?

Like-for-like re-felting using the same material 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 height, form, or appearance, you may need to check with Nottingham City Council. We advise you on this at the survey stage so you are clear before any work begins.

Can I felt a roof myself, or do I need a professional?

Small shed roofs can be DIY-felted using traditional cold-bonded felt and basic hand tools. Torch-on felt requires a gas torch, trained technique, and working at height — it is not a safe or recommended DIY job. Poorly installed torch-on felt creates fire risks and usually fails at seams within a few years. For any roof on a garage, extension, or home, a trained roofing contractor will deliver a far better and safer result. We provide free quotes with no obligation so you can compare the cost of professional installation.​

How do I maintain a felt roof to extend its lifespan?

Clear the roof surface and gutters every autumn, check seams and flashings after frost, and book a professional inspection every one to two years. Avoid pressure washing — it damages the cap sheet surface. Act on small leaks immediately before they cause timber decay. A UV-resistant roof coating applied to a clean, sound surface can add several years of life to an ageing felt roof.

Does a felt roof need Building Regulations approval in the UK?

You must notify Nottingham City Council Building Control if the work covers 25% or more of the total roof area. Like-for-like repairs and small patch repairs 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 process as part of our service — you do not have to handle it alone.

Areas We Cover — Felt Roofing Across Nottingham and Nottinghamshire

We carry out felt roofing, re-felting, and flat roof repairs across all Nottingham postcodes and the wider Nottinghamshire area.

Nottingham City Centre — NG1 — Lace Market, Hockley, Castle Quarter
West Bridgford, The Meadows, Sneinton — NG2
Mapperley, Carlton, St Ann's — NG3
Carlton, Gedling, Netherfield — NG4
Sherwood, Arnold, Bestwood, Carrington — NG5
Bulwell, Old Basford, Bestwood Village — NG6
Radford, Forest Fields, Hyson Green, Lenton — NG7
Wollaton, Aspley, Bilborough — NG8
Beeston, Stapleford, Chilwell, Trowell — NG9
Long Eaton, Sawley, Sandiacre — NG10 (our home base)
Clifton, Ruddington, Gotham — NG11
Radcliffe on Trent, Cotgrave, Keyworth — NG12
Bingham, Bottesford — NG13
Calverton, Lowdham — NG14
Hucknall — NG15
Kimberley, Eastwood, Nuthall — NG16
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Not sure if we cover your area? Call 0115-647-3317 and we will confirm straight away. We also cover Mansfield, Sutton in Ashfield, Kirkby in Ashfield, Ilkeston, and parts of Derbyshire.

Ready to Book Your Free Felt Roofing Survey in Nottingham?

If your felt roof is leaking, blistering, or simply overdue for attention, do not leave it another winter. Water damage inside a roof structure gets worse quickly — and what is a straightforward re-felt today can become a decking replacement job by spring.

Here is why Nottingham homeowners choose Nottingham Builders for felt roofing:

• Free drone roof survey — see the exact condition of your roof before committing to anything
• Free, written, itemised quote — no surprises, no hidden costs
• No deposit required — you pay only when the work is complete and you are satisfied
• BBA approved materials on every installation
• Fully trained, insured team covering all of Nottingham and Nottinghamshire
• Honest advice — we recommend what your roof actually needs, not the most expensive option
• Residential and commercial felt roofing — garages, extensions, porches, outbuildings, and flat roof homes

Call us today on 0115-647-3317 or visit building-nottingham.co.uk to book your free survey. We cover every Nottingham postcode from NG1 to NG16 — and we are always happy to give friendly, straightforward advice over the phone before you commit to anything.

Don't put it off. A quick call today can save a costly repair tomorrow.

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Nottingham Builders

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