Flat Roofing in Chesterfield
Felt flat roofing across Chesterfield and north Derbyshire — high-performance torch-on felt for extensions, garages, dormers and porches, quoted free and done properly.
- Free, no-obligation written quotes
- Every job finished properly before we move on
- Small repairs through to full re-roofs
- Local to Chesterfield and north Derbyshire
- Straight answers and a fixed written price
Flat roofing across Chesterfield and north Derbyshire covers everything from a rear extension and a garage to a dormer, a porch, a bay window roof or a garden outbuilding. They're common, they're useful, and they've got an unfair reputation — mostly because so many of them were laid badly the first time around.
Why Old Felt Flat Roofs Fail
The classic flat roof problem is an old felt covering that's reached the end of its life. UV from the sun bakes the bitumen until it cracks, seams split with thermal movement, and water starts ponding where the falls weren't right. A felt flat roof typically does 10 to 15 years before it's past its best — and once it's split, it's on borrowed time.
The good news is that a modern high-performance felt system, laid properly with the falls sorted so water drains rather than sits, is a far better roof than the old mineral felt it replaces. Across the extensions and garages of Clay Cross and Dronfield, we lay felt flat roofs that are built to last, not to leak.
Signs You Need This
- Blisters, bubbles or cracks visible in the felt surface
- Water ponding on the roof hours or days after rain
- Damp patches or brown stains on the ceiling below
- The felt has split at a seam or pulled away from an upstand
- The covering is more than 10–15 years old and looks brittle and tired
- Moss and debris gathering because water isn't draining off
Our Process
- 1
Look at what's there
We inspect the existing roof — the covering, the deck underneath, the falls and the upstands. We tell you whether it needs stripping or can be overlaid, and why.
- 2
Sort the falls
Water has to run off, not sit. We set the falls so the roof drains properly to the outlet — this is the single biggest difference between a flat roof that lasts and one that doesn't.
- 3
Lay the felt
We lay high-performance torch-on felt to the manufacturer's spec, in two or three properly bonded layers with proper upstands, trims and edge details. No shortcuts at the joints.
- 4
Finish and test
Edges are dressed, outlets connected, and the finished roof is checked for drainage and weather-tightness before we leave.
Materials & Methods
The system we use is high-performance torch-on felt — the workhorse of flat roofing, proven and a big step up from the old mineral felt it replaces. Two or three layers, properly bonded with heat, gives a solid, weather-tight roof at a sensible price. It's the right material for extensions, garages, dormers, porches and outbuildings across north Derbyshire.
Then there's the build-up. A warm roof puts the insulation above the deck, keeping the deck warm and the condensation out — usually the right call on a new extension. A cold roof puts insulation below, with a vented void, and is only right where the build-up allows ventilation. Getting this wrong is how flat roofs sweat and rot from underneath. We also size guttering and outlets for Derbyshire rainfall so the roof doesn't drown in a downpour.
What It Costs
Flat roofing is priced per square metre. As a rough guide across north Derbyshire, high-performance torch-on felt typically runs £60–£90 per square metre. A typical single garage flat roof therefore falls somewhere between £600 and £1,500 depending on the condition of the deck underneath.
If the timber deck is sound we can sometimes overlay rather than strip, which saves money — but we won't overlay a rotten deck to save a short-term cost, because you'll be paying for it again in two years. The deck, the falls, the upstands and the outlets all affect the final number, and you get all of that in a written quote before we start. Call 07949 348947 for a free, no-obligation quote.
Why Chesterfield Homeowners Choose Dickens Roofing
We Finish What We Start
We don't start your roof and disappear onto another job. Your job runs from start to finish before we move on, and you'll know where you stand every day we're there.
A Written Price, Not a Guess
You get a proper written quote before anything begins. No day-rate creep, no surprise extras, no "we found something else while we were up there".
Every Part of the Trade
Slating, tiling, flat roofs, pointing, leadwork, chimneys, guttering. One firm for the whole job rather than three trades and three invoices.
Local to North Derbyshire
Chesterfield, Clay Cross, the villages in between. We're ten minutes away, not an hour up the M1, and we come back if something isn't right.
What Our Customers Say
Frequently Asked Questions
Roughly £60–£90 per square metre for high-performance torch-on felt. A single garage roof typically falls between £600 and £1,500. The deck condition and the falls affect the final price, all given in a written quote.
Related Services
New Roofs & Re-Roofing
Stripped back to the rafters and rebuilt with new membrane, treated battens and fresh tiles or slate.
Learn MoreGuttering & Downpipes
New guttering, downpipes, repairs and clearing, sized for Derbyshire rainfall.
Learn MoreLead Work
Stepped flashings, valleys, soakers and box gutters in proper code lead.
Learn MoreGet Your Free Quote
Tell us what's happening and where you are. Lewis picks up, comes to look properly, and puts a written price in front of you — no obligation.
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Based near Clay Cross — covering Chesterfield, the pit villages and most of north Derbyshire.