Crawley · Sussex · Surrey · Kent

Roofs done properly, from ridge to gutter.

Bonwycks is a family-run roofing company based in Crawley. We repair, replace and look after roofs across the South East — with honest advice, tidy sites and a guarantee we actually stand behind.

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4.9 from local reviews 10-year workmanship guarantee Fully insured
45° 11.2 m
25+Years on the tools
3,100+Roofs repaired & replaced
22Towns covered, 50-mile radius
10yrWritten workmanship guarantee

What we do

Every roofing job, one trusted team

From a single slipped tile to a complete slate re-roof — if it keeps the rain out, it's our department.

How it works

No mystery, no pressure

Say hello on chat

Tell us what's going on — a photo from the garden helps. A real person replies, not a bot reading a script.

We look properly

Ground, ladder or drone — we inspect the roof and photograph everything we find, good and bad.

Fixed written quote

Itemised, honest, valid for 60 days. Scaffolding and waste included. Compare us with anyone.

Tidy work, guaranteed

We turn up when we said, protect your garden, and hand over a photographed, guaranteed job.

Free roof tools

Answers before you talk to anyone

We built these little tools so you can get honest numbers and a straight steer in two minutes — no email address, no phone call, no catch.

Where we work

Crawley and 50 miles around it

Our vans leave Crawley every morning and cover West Sussex, East Sussex, Surrey, Kent and South London. Every town below has its own page, with local knowledge to prove we've actually been there.

Word of mouth

What the neighbours say about us

"Found the leak two other firms missed, fixed it the same week, and charged less than either had quoted. Photos of everything."
Sarah M. Roof repair · Pound Hill, Crawley
"Full re-roof in clay tile. The scaffold was up Monday, down the next Friday, and the garden was cleaner than they found it."
David & Anne P. Re-roof · Horsham
"Honest to a fault — told us the roof had ten years left and to save our money. We'll never use anyone else."
Raj K. Roof survey · Reigate

Good to know

Questions we hear every week

How much does a new roof cost in 2026?

For a typical three-bed semi in the South East, a full re-roof in concrete tile usually lands between £7,000 and £10,500, with clay and natural slate costing more. The honest answer is that size, material, access and what we find under the old tiles all move the number — which is why our written quotes are fixed, itemised and free. For a quick ballpark before you talk to anyone, try our roof cost calculator.

How long does a re-roof take?

Most full roof replacements take five to ten working days: a day or two to scaffold, three to six on the roof itself, then snagging and a thorough tidy-up. Weather can stretch that — we never strip more roof than we can make watertight the same day, so your home is protected even if the heavens open mid-job.

Should I repair my roof or replace it?

Our rule of thumb: if less than about a quarter of the roof has problems and the timbers are sound, repair it. If the underlay has perished, tiles are failing across every slope, or you're paying for repairs every winter, replacement is usually cheaper over ten years. We'll always price the repair honestly first and show you photos of exactly what we've found, so the decision is yours with the facts in front of you.

Do you help with insurance claims for storm damage?

Yes — it's a big part of what we do every winter. We make the roof safe first, then provide a dated photo report and written scope of damage in the format insurers want, and we're happy to speak directly with your insurer or loss adjuster. One tip: photograph any damage from the ground as soon as it's safe to, and note the date of the storm.

How long do flat roofs last?

It depends entirely on the system. Modern GRP fibreglass and EPDM rubber, properly installed, last 25–30 years and often longer; high-performance felt around 15–20. The old-fashioned pour-and-roll felt that gave flat roofs a bad name managed about ten — if your flat roof dates from the 80s or 90s, it owes you nothing.

Is moss actually bad for my roof, or just ugly?

Genuinely bad, unfortunately. Moss holds water against the tiles, which freezes and cracks them in winter; it lifts tile edges enough for wind-driven rain to get underneath; and it slides off in clumps that block gutters. We remove it by hand with a soft biocide treatment — never a pressure washer, which does more damage than the moss ever could.

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Something dripping? Let's sort it.

Send us a message and a photo — we'll tell you what it likely is, what it likely costs, and how fast we can be there.

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