Roofing services in Crawley
Flat roofing in Crawley
Looking for flat roofing in Crawley? Whether it is a leaking garage roof in Langley Green, a porch in Pound Hill or a kitchen extension in Maidenbower, we replace and repair flat roofs across RH10 and RH11 in EPDM rubber, GRP fibreglass and modern felt. Our roofers work out of Crawley, so surveys are easy to arrange. Free survey, fixed written price and a twenty year workmanship guarantee. Call 01342 445004.
Why Crawley has so many flat roofs
As a New Town, Crawley was built quickly from the late 1940s onwards, with whole neighbourhoods of similar houses. Many came with flat roofed porches, canopies and garages, often in blocks behind the houses. Later, thousands of homeowners added single storey rear extensions with flat roofs. A large share of those original roofs were felt laid on timber or chipboard decks with very little insulation, and many are now well past their working life.
The newer neighbourhoods such as Maidenbower, Forge Wood and Kilnwood Vale have fewer original flat roofs, but plenty of extensions and dormers have been added since.
Typical flat roof problems we see in Crawley
- Ponding on garage and porch roofs that were laid nearly level
- Chipboard decks that have swollen and gone soft after years of small leaks
- Felt splitting at the edges and around the outlet
- Water tracking into the house where an extension roof meets the original wall
- Old corrugated garage roofs that may contain asbestos
Need a new flat roof in Crawley? Call 01342 445004 or WhatsApp 07939 862 818. Priced after a free survey.
Choosing the right system
EPDM rubber is our usual choice for Crawley garages and simple extensions. It can be laid in one sheet on most domestic roofs, so there are no joints across the main area.
GRP fibreglass suits porches and canopies with lots of edges, dormers, and anywhere you need a hard wearing surface or a particular colour.
Modern felt suits larger roofs and those with complicated details.
You can compare them in our guide to EPDM vs GRP vs felt.
Garage blocks and shared roofs
If your garage is part of a block, the roof may be shared or managed by a housing association or residents’ group. We are happy to quote for a single garage or the whole block, and we will check where the boundaries of each roof lie before work starts. If a garage roof may contain asbestos, it must be tested and dealt with safely before any new roof goes on, and we will explain how that works.
The replacement process
- Free survey, with photographs and a look at the ceiling below
- Fixed written quote listing every item
- Old covering and damaged deck removed
- New deck where needed, vapour control layer and insulation with falls
- New EPDM, GRP or felt with trims, upstands and outlets
- Site cleared and finished roof photographed
Insulation rules
When more than half of a flat roof is replaced, Building Regulations normally require the insulation to be brought up to standard where practical. On an extension or porch this is usually done with a warm deck. For an unheated garage, the rules are different, and we will explain what applies.
Nearby
We also cover Copthorne, Horley, Lowfield Heath, Rusper, Faygate and Three Bridges. See also flat roofing in East Grinstead.
Other services in Crawley
- Roofers in Crawley
- Roof replacement in Crawley
- Emergency roofer in Crawley
- Flat roofing across Sussex and Surrey
Which flat roof suits your Crawley home?
| Your roof | Typical issue | Our usual recommendation |
|---|---|---|
| Garage in a block | Old felt, ponding, joins with neighbours | Felt or EPDM, careful detailing at joins |
| Front porch canopy | Small roof, many edges | GRP |
| Rear kitchen extension | Heat loss and condensation | Warm roof in EPDM or GRP |
| Flat roof dormer | Exposure and edges | EPDM or GRP |
Warning signs on Crawley flat roofs
- Felt cracked like crazy paving, often on older garages
- Edges lifting on porch and garage roofs
- Ponding over most of the roof
- Water staining on garage walls or ceilings
- Moss and weeds growing on the roof
Asbestos garage roofs
Some older garages in Crawley have corrugated asbestos cement roofs. These must be identified before work, and removal must be carried out safely and legally. We will advise if we think your garage roof may contain asbestos, and we will not cut or break suspect sheets.
Step by step: replacing a Crawley garage roof
- Survey and check for asbestos or rotten timbers
- Fixed written quote
- Old covering removed and disposed of properly
- Deck and timbers repaired or replaced
- Falls corrected so water drains to the gutter
- New membrane and trims fitted
- Gutter and downpipe checked or replaced
Working with neighbours on shared garage blocks
Rows of garages often share walls and roof edges. We detail your roof so that it meets your neighbours’ roofs cleanly and does not throw water onto them. If several owners want their roofs done together, we can quote for each separately.
Materials and guides
Read EPDM vs GRP vs felt and flat roof replacement cost, or see roof replacement in Crawley.
What affects the price?
As a guide, a new flat roof in the South East usually costs between £50 and £140 per square metre depending on the system, with a single garage roof typically from £1,200 and an insulated extension roof of around 25 square metres usually between £3,500 and £6,000. Size, system, insulation, deck condition, asbestos and access. Priced after a free survey. Your exact price is confirmed in writing after a free survey.
Frequently asked questions
As a guide, a new flat roof in the South East usually costs between £50 and £140 per square metre depending on the system, with a single garage roof typically from £1,200 and an insulated extension roof of around 25 square metres usually between £3,500 and £6,000. Your exact price is confirmed in writing after a free survey.
Often yes, provided the edges can be detailed properly against the neighbouring roofs. We check this at the survey.
For heated rooms where more than half of the roof is replaced, insulation upgrades normally apply. We will explain what is needed for your roof.
A warm deck raises the roof level slightly. We check door and window heights before recommending it.
Yes. Our twenty year workmanship guarantee applies.
Often one or two days.
Yes. Doing several small roofs together usually saves on setup and access.
Yes, if you are using the garage as a room or want to reduce condensation.
Get a flat roof quote in Crawley
Call 01342 445004, WhatsApp photos to 07939 862 818, or book your free survey.
Free roof survey in Crawley
Leave your name and number and we will call you back to arrange a free survey. Photos help us quote faster and spot anything urgent.
Free survey & fixed quote
Get a fixed price in writing
Every job starts with a free survey: we inspect the roof, photograph what we find and give you one fixed written quote. You decide what happens next.