Call us: 0800 7720 992 | Free survey, no obligation

Time to Replace Your Flat Roof? We Fit 5 Systems — All Manufacturer-Backed.

EPDM rubber. GRP fibreglass. Mineral felt. Cromar HydroSil silicone. ResTec liquid-applied. We’re an approved installer for all five — your manufacturer warranty is genuinely valid.

Book Free Survey → Call 0800 7720 992
Warning Signs

5 Signs Your Flat Roof Needs Replacing, Not Repairing

Failed Felt

Bubbles, blistering, and splits across the whole roof area are not isolated defects — they mean the membrane has broken down throughout. Patching one area will just reveal the next weak point.

Repeated Leaks Despite Patches

If you’ve had two or more repairs in the past two years, the membrane itself is at end-of-life. You’re paying for temporary fixes on a roof that needs a permanent solution.

Standing Water That Won’t Drain

Persistent ponding means the fall is wrong, the deck has sagged, or the membrane is ponding-fatigued and beginning to delaminate. Drainage problems compound fast and damage the structure beneath.

Roof Is 15+ Years Old

Felt has a typical lifespan of 10–15 years. EPDM and GRP can reach 20+ years when installed correctly. Once you’re past the system’s service life, replacement is almost always cheaper than ongoing maintenance.

Asbestos Felt Board (Pre-1990s)

Older properties sometimes have asbestos-containing felt board underneath the surface layers. This requires proper identification and handling — never attempt a DIY strip on a pre-1990 flat roof without checking.

Systems

Five Systems We Fit

We’re manufacturer-approved for all five. That means the guarantee you receive is real — registered with the manufacturer, not just a letter from the fitter.

Mineral felt flat roof replacement, fresh granular surface

Felt (Mineral / Torch-On)

From £75–£150/m² plus VAT

Budget-tier 3-layer mineral or torch-on felt. Typical lifespan of 10 years. Best suited to sheds, garages, and low-specification outbuildings where budget is the overriding priority. Lowest entry price; shortest service life of the five systems.

EPDM rubber flat roof, premium-finish single-piece membrane

EPDM Rubber

From £75–£150/m² plus VAT

Single-piece rubber membrane with no joints in the field. 20-year-plus typical lifespan. UV-stable, dimensionally stable, and straightforward to repair if ever damaged. The mainstream first choice for residential and light-commercial roofs.

We’re an approved Elevate EPDM (formerly Firestone) and Flex-R installer — your 20-year manufacturer guarantee is genuine.

GRP fibreglass flat roof, glossy seamless finish, manufacturer-registered Cure It install

GRP Fibreglass

From £75–£150/m² plus VAT

Hand-laid multi-coat glass-reinforced plastic, hardening to a glossy seamless finish. 20-year-plus typical lifespan. The premium end of flat roofing. Heavier substrate preparation required; GRP doesn’t tolerate deck movement, so the deck must be solid before installation.

Approved Cure It GRP installer — manufacturer-registered warranty.

Cromar HydroSil silicone liquid applied over existing flat roof, glossy finish

Cromar HydroSil Silicone

From £75–£150/m² plus VAT

Single-component silicone liquid applied directly over your existing failing roof surface. No strip-out, no skip, no scaffold for material removal. On a structurally sound deck with a tired surface, HydroSil restores 15+ years of waterproofing life. The “save your roof without replacing it” middle option when the deck itself is still solid.

ResTec liquid-applied membrane on a flat roof, finished surface, terraced houses behind

ResTec Liquid-Applied Membrane

From £75–£150/m² plus VAT

Fully bonded liquid system. Can be used as a full replacement on a stripped deck, or as a restoration over an existing roof. Seamless and flexible, it conforms to complex detailing without joints — ideal for roofs with skylights, parapets, and multiple upstands where membrane systems are harder to seal cleanly.

Approved ResTec installer — manufacturer-backed.

What’s Included

What Every FRNW Fit Includes

  • ✓ Free on-site survey — 30 minutes, no obligation
  • ✓ All materials supplied — no markup, no surprises
  • ✓ Waste material removal and skip hire if needed
  • ✓ Scaffold or safe access provision if two-storey or higher
  • ✓ Breathable membrane underlayment where the system requires it
  • ✓ Manufacturer-backed guarantee in writing on the day of completion
  • ✓ Photo documentation pre, during, and post — yours to keep, useful for insurers and future buyers
Why It Matters

Why Approved-Installer Status Matters

Most fitters can lay an EPDM or GRP membrane. The membrane is the easy part. The hard part is getting the manufacturer to honour the guarantee — and they only honour guarantees on roofs fitted by approved installers who registered the job. A “20-year guarantee” from a non-approved fitter is worth nothing the moment you try to claim on it.

Lee at LP Roofing is approved by all five manufacturers we fit — Cure It, Elevate, Flex-R, ResTec, and Rapid Roof Pro — and is personally NVQ Level 2 qualified in Single Ply Roofing. So when you receive a “20-year manufacturer guarantee” from us, it is a real document the manufacturer has registered, not a piece of paper from a fitter who will be impossible to find in five years.

How It Works

From Survey to Sign-Off

1

Survey

30 minutes on-site. We assess the deck, drainage, and existing system — then tell you exactly what’s needed.

2

Written Quote

Fixed-price quote within 24 hours. The price you see is the price you pay — no extras on the day.

3

Schedule

Typically 2–4 weeks lead time. We’ll agree a date that works and confirm in writing.

4

We Fit

1–3 days for most residential roofs. Clean, efficient installation with full property protection throughout.

5

Handover & Paperwork

Manufacturer guarantee registered and handed to you in writing, plus your complete photo file on the same day.

Book a free survey — typically 30 min on-site, written quote within 24h

No deposit on survey day, no high-pressure sales, no obligation to proceed.

Book Survey Call 0800 7720 992
FAQ

Replacement FAQ

How much does a flat-roof replacement cost?

Costs vary by system, roof size, and access. Felt starts lowest; GRP and EPDM sit mid-range; liquid-applied systems depend on the condition of the existing deck. We provide a fixed-price written quote after a free on-site survey — no surprises on the day.

Which system should I pick?

It depends on your budget, the deck condition, and how long you want the roof to last. EPDM and GRP are the mainstream first choices for residential roofs needing 20+ years. Felt suits outbuildings on a tighter budget. We’ll recommend the right system after seeing the roof — we have no reason to upsell you to something you don’t need.

How long does the fit take?

Most residential flat roofs take 1–3 days. A straightforward garage or extension roof is usually done in a single day. Larger or more complex roofs with multiple penetrations, parapets, or skylights take longer. We’ll give you an accurate timeframe in your written quote.

What’s the warranty actually cover?

The manufacturer warranty covers defects in the membrane and system materials. The key point is that a manufacturer warranty is only valid when the job is installed and registered by an approved installer. We hold approved-installer status for all five systems we fit, so your warranty is a real registered document — not just a piece of paper.

Do you remove the old roof?

Yes, in most cases. Stripping back to the deck gives you a clean, stable surface and the best possible result. For roofs that are structurally sound but have a tired surface, Cromar HydroSil or ResTec liquid can be applied over the top — we’ll advise which approach suits your roof after the survey.

Can you fit in winter?

EPDM and liquid-applied systems can be installed in cooler temperatures, though we avoid frost and heavy rain. GRP and felt require warmer, dry conditions. If there’s an active leak we can arrange a temporary fix to protect your property while we wait for suitable weather.

Do I need building regs / approval?

Like-for-like flat roof replacements on existing domestic buildings generally do not require building regulations approval, provided the structure and insulation remain unchanged. If you are upgrading insulation — which we often recommend — building regs may apply. We’ll flag this during the survey so you’re not caught out.

What about my gutters and downpipes?

We inspect gutters and downpipes as part of the survey. If they’re in poor condition they can undermine a new roof quickly — we’ll tell you honestly whether they need attention. Replacement guttering can usually be included in the same job, quoted separately so you can decide.

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