Mastic sealing for building owners and managing agents in Crawley, West Sussex
Planning work on a mastic joint in Crawley? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Estate-wide sealant that is simply worn out
- A mix of products and colours from past repairs
- Brittle perimeter mastic across a building
Mastic sealing across Crawley
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Maintenance after handover
Problems stay small when the joints are checked regularly. In particular:
- Make it easy for occupiers to report draughts
- Share the asbestos register when you send details
- Log resealing dates block by block
- Check sealant joints during planned building inspections
Our workmanship is covered for 12 months, so report any failure in that time. After that, regular inspection keeps the programme on track.
Water getting in round frames can damage plaster, decoration and the frames themselves. Early resealing is far simpler than repairs inside.
How we handle mastic sealing in Crawley
Owners and agents typically inherit a building’s mastic rather than choose it and it slowly wears out: window perimeters, door frames, external joints and communal junctions all rely on it. When it hardens, splits or pulls away, water and draughts follow, and occupiers start reporting it. We work on window and door perimeters on blocks, communal entrances and stairwells and communal kitchens and washrooms, and the failures we are asked to look at most are repeated reactive repairs to the same buildings and cracked, hardened mastic round windows on a block. Searching for sealant specialists in Crawley? We have been sealing commercial buildings since 2005, with CSCS-carded applicators.
Mixed-use buildings in big towns such as Crawley have flats above, shops below and shared areas in between. Water getting past a failed perimeter joint can reach a neighbour’s flat or a shop below, so it’s worth acting before complaints start.
Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.
- Location
- Crawley (RH10, RH11, RH12, RH6)
- Region
- West Sussex
- Guarantee
- 12 months on every job
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
What happens if it’s left?
Mixed repairs by different contractors leave a patchwork of products and colours. Resealing a whole building gives a consistent finish. If one joint has failed on your building in Crawley, others of the same age may be close behind. Renewing them in one programme saves time later.
There’s no price list, because the scope varies so much from one building to the next. Call for a quote and we will price your job on its own details.
Why clients in Crawley choose us
- Specification-led, product-correct work
- One phone line for London, the South East and Scotland
- Workmanship guaranteed for 12 months
- Matching to RAL references, product permitting
Should maintenance staff do it?
For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
How a job runs
In a busy building, the work is phased so only one area is out of use at a time. Each section is protected, cleaned back and sealed before the next one starts. Town-centre jobs in Crawley can mean limited parking and loading, whereas edge-of-town units normally have yard space. Either way, tell us what’s available.
- First comes a look at the joints and, for older buildings, the asbestos records.
- A fixed quote covers the joints, products and order of work.
- Failed mastic is removed completely.
- Joint faces are cleaned, backed and resealed.
- Buildings are completed in turn.
Preparing the site
- Flag any permit to work we’ll need
- Clear stock, furniture or equipment away from the joints
- Point out any areas we must not close
Get a fixed quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, speak to us on 01277 525 020 or use the quote form.
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Nearby places to Crawley
What else we do in Crawley
FAQs: Crawley
Do you work for managing agents with blocks near Crawley station?
Yes, we work for agents, landlords and housing associations with blocks of every size. Give us the building’s details and say how residents are notified, and we’ll quote and plan to suit.
Do you work in occupied care homes around Crawley?
Yes, with the manager deciding the order and timing of rooms. Any site rules, from signing in to infection control, are agreed before we start.
How long before the joints can be used?
Curing time varies by product, and we confirm it on the day.
Can you plan resealing across several buildings?
Block-wide and estate programmes are common. You get a fixed quote per building or for the whole job.
What paperwork can you provide?
Our credentials include CHAS, Constructionline and public liability insurance. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.
Is asbestos a concern with old mastic?
Some mastics in pre-2000 buildings contain asbestos. We ask for the asbestos register or survey before work starts and suspect material is tested first.
Can weather delay the job?
It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.
Do you need mastic sealing in Crawley?
Buildings move with temperature and moisture, and every joint has to stretch and squeeze with them. A joint that was too narrow, too thin or the wrong product can’t cope and fails early.
These are often picked up first by site or facilities staff:
- No planned programme for sealant
- Mastic failing across several blocks on an estate
- Movement joints with sealant missing
- Old repairs sealed over failed mastic
Older community buildings, Friary Church of St Francis and St Anthony among them, often have frames of mixed ages whose mastic varies.
What your quote should include
- The terms of the workmanship guarantee
- How the existing material will be dealt with
- Will RAMS and insurance details be available?
- Their approach to joint depth and backing
Mastic sealing in Crawley: the local picture
There are three care or nursing homes within about 2 miles of Crawley. Owners of care premises can bring window and door mastic into a phased programme planned around the home. As a twentieth-century planned town, Crawley was designed rather than grown. Phased building means whole estates with frames of a similar vintage, ideal for a planned mastic programme.
If you own or manage units on a site such as Denvale Trade Park, under half a mile north-east of Crawley, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit. If your remit includes a building such as Three Bridges Junior School, frame and door mastic can be programmed for the holidays.
Crawley is about 27 miles south of London, in West Sussex. Anywhere in RH10, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Crawley is one of 373 places we cover in West Sussex for mastic joints. Sites around Brighton have their own page, roughly 19 miles from Crawley.
Business premises anywhere in RH10, RH11, RH12 and RH6 are within our area. If your site is on Station Road, Queens Square and High Street or close by, we can quote for mastic joints. Being close to the A23 and A264, Crawley is easy to get to with materials and equipment. Just outside Crawley, we also work in Southgate (1 mile south-west), Tilgate (1 mile south-east), West Green (1 mile north), Three Bridges (1 mile east) and Langley Green (1 mile north). A short drive away, we cover Horsham (7 miles south-west), Haywards Heath (9 miles south-east), Burgess Hill (11 miles south), East Grinstead (8 miles east), Billingshurst (13 miles south-west) and Roffey (5 miles south-west). Among the larger centres in West Sussex is Crawley, and its commercial and public buildings are all within our area.
Landmarks near Crawley
Recent enquiries here include premises near Tilgate Park, St Wilfrid's Catholic School and St Francis of Assisi Catholic Primary School, among other places. There’s a railway station in Crawley itself: Crawley station. Other landmarks nearby include Crawley Hospital (0.5 miles north-west) and County Mall (under half a mile north-east). Green spaces nearby include Tilgate Lake.
Cost factors for mastic joints
These are the things that shape the price:
- Joint width, depth and condition
- Any access equipment needed
- The total length or number of joints
- Specialist products, such as fire-rated or hygienic sealants
A quote for mastic joints depends on quantities, condition and access, and any specification that applies. Call for a quote.
Before you send an enquiry
For an accurate fixed quote, we need to understand the site. Send us:
- A wide shot and a close-up of the area
- Asbestos survey details if the building is older
- The type of building and who uses it
- Anything awkward about access or site hours
Specifications, drawings and tender packages are welcome with any enquiry, and we will price the work to it. For smaller jobs, photos and a description will do.