The Mastic Doctor team standing beside their branded vans outside an office building
West Sussex · England

Sealant specialists in Clayton

Sealant work in Clayton for main contractors, managing agents and facilities managers: sealant work for offices, shops, hotels and other commercial buildings, quoted at a fixed price.

  • Frame sealant that has cracked, shrunk or pulled away
  • Gaps behind commercial kitchen worktops and sinks
  • Mouldy silicone around WCs, urinals and vanity tops
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS accredited
£5m PL insurance

Need commercial sealant contractors in Clayton?

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Questions about Clayton

Is a smaller place like Clayton outside your area?

No. Places such as Clayton are covered as much as the big towns. London and every South East county are within our area. Good photographs up front let us bring everything on the first visit.

Do you offer colour-matched sealant for buildings in Clayton?

Yes, we can normally get close to most finishes from the product’s colour range. Available colours for the product are confirmed with the quote.

How do we get a quote?

Price depends on joint lengths and widths, how much removal is involved, the product, access and phasing. For a fixed quote, send details through our quote form.

Do you work for facilities managers and managing agents?

Yes. FMs, managing agents and landlords are among our regular clients as well as contractors. We can work to your instruction process and site rules.

Who decides which product is used?

If the job is specified, we follow the specification. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.

Will the building have to shut during the work?

Most of the buildings we work in stay occupied. We agree the order of areas, protect what’s nearby and close off only the section we are sealing, until its cure time has passed.

How long does a job like this take?

That varies with the scale of the job, but the work typically takes a few hours to several days on most single sites, depending on joint lengths and access. For bigger or phased jobs, we will set out a timescale with the quote.

Commercial sealant contractors in Clayton

On a commercial site, sealant turns up in more places than people expect: around sanitaryware, along worktops and splashbacks, at window boards, partition heads and floor junctions. Outside, it closes facade joints, frame perimeters and movement joints against the weather. We deal with internal and external sealant joints alike. We work on floor and threshold joints, window and door perimeters and washrooms and tea points, and the usual reasons a site gets in touch are a top-up bead over failed sealant, now lifting and sanitary sealant that has gone black and patchy. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Clayton is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

If you look after more than one building near Clayton, the work can be planned as one programme, with one quote format and one point of contact.

Business units in the countryside around places like Clayton are often converted barns, stables or farmyards. Their mix of old walls with new frames, partitions and floors means many joints between unlike materials, and a sealant colour that suits the building’s character is often part of the brief.

The 12-month guarantee covers our workmanship: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Clayton (BN6)
Region
West Sussex
Guarantee
12 months on every job
Quote
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026

Doing it in-house

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.

The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.

Commercial sealant contractors around Clayton: what changes locally

Two named trading, business or retail sites lie within about 3 miles of Clayton. Tenant changes on such sites bring fit-outs, and fit-outs bring new joints. Rainfall across the South East, Clayton included, is lower than in many parts of the UK. That helps, but frost and condensation on glass and coated frames still stop outside sealing on some winter mornings.

In hotels such as The White Horse Hotel, 1.5 miles north-east of Clayton, refurbishments normally mean bathroom, bar and reception joints where a matched sealant colour has to sit with the finishes. Sites a few miles apart, such as Aviation Trading Estate and Victoria Business Park, can share one programme and one point of contact.

Clayton is about 3 miles south of Burgess Hill, in West Sussex. We cover commercial sites throughout Clayton. Our West Sussex coverage takes in 373 places, large and small.

Work on sealant joints is covered throughout BN6. Buildings on Spring Lane, Underhill Lane and Brighton Road are within our area for sealant joints. Close to Clayton, our area also takes in Keymer (1 mile north-east), Hassocks (1 mile north), Ditchling (2 miles north-east), Westmeston (2 miles east) and Hurst Wickham (2 miles north-west). Further afield, our area takes in Crawley (14 miles north), Horsham (13 miles north-west), Worthing (13 miles south-west), Haywards Heath (6 miles north), Burgess Hill (3 miles north) and Shoreham-by-Sea (7 miles south-west).

Near you in Clayton

We work on buildings around Downlands Community School and The Greyhound Public House, among other places. Clayton’s nearest station is Hassocks station, about 1 mile north of the centre. Other landmarks nearby include Clayton Castle (less than half a mile south-west) and The Budding Foundation Museum of Gardening (0.9 miles north-west). Open spaces near Clayton include Wolstonbury Hill and Ladies Mile.

Map of Clayton © OpenStreetMap contributors

Diagnose, treat, sign off

Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. Smaller jobs around Clayton can be grouped with others nearby. You will have a fixed quote before work starts.

  1. We start with the evidence: photos, drawings or a look on site.
  2. You get a fixed quote covering removal, preparation and the new sealant.
  3. Sequence, access and working times are settled before the first joint is touched.
  4. Each joint is stripped, cleaned back to sound faces and primed where the maker specifies.
  5. Backing goes in, the new sealant is laid and tooled, and the area is left neat.
  6. We hand back each area with its cure time and our 12-month guarantee.

What we need from you

  • Send asbestos survey details if the building is pre-2000
  • Warn occupants and staff about the work
  • Have the specification and drawings to hand

Quotes

The quickest route to a quote is a few photos and the site postcode. Send them through the quote form, or phone 01277 525 020 or send details through our quote form to discuss it first.

Ask for a quote

Advice

What we can’t put right

We check first that sealant really is the fix. It isn’t the answer for:

  • Faulty windows rather than failed perimeter sealant
  • Structural cracks or movement the joints weren’t designed for
  • Removing asbestos-containing materials (a licensed or specialist contractor’s job)

If you’re not sure, just ring 01277 525 020 or send details through our quote form and we’ll give you a straight answer before you book.

What we seal

  • Floor and threshold joints
  • Movement joints in walls and floors
  • External facade joints
  • Window and door perimeters
  • Washrooms and tea points
  • Kitchen worktops and splashbacks

What the job involves on each surface

Washrooms and toilets

Black sealant in a toilet block is normally beyond cleaning. The lasting answer is removal, preparation and a new sanitary bead, planned so the building keeps enough facilities in use.

Fire-rated seals where specified

Fire-rated sealant is only one type of fire-stopping product. Collars, wraps, batts and boards are specified for other services and gaps, so we will flag it if the detail needs a different product.

Cost factors for sealant joints

Each job is priced on its own details. The main factors are:

  • Access and working height
  • The total length or number of joints
  • Specialist products, such as fire-rated or hygienic sealants
  • Joint width, depth and condition

Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. Send the details and a fixed figure follows.

What we need to price the job

To price the job accurately, we need a clear picture of the site. Send us:

  • Anything awkward about access or site hours
  • Asbestos survey details if the building is older
  • The type of building and who uses it
  • A wide shot and a close-up of the area

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we will return a fixed quote you can plan around. For a chat about it beforehand, call 01277 525 020 or email drawings and photos.

Common problems we fix in Clayton

Plenty of failed joints were never sealed with the right product. Decorators’ caulk on a joint that moves, acetoxy silicone on stone or metal, or a stiff sealant on a facade will all fail early. BS 6213 gives guidance on choosing construction sealants, and many specifications refer to it.

What tends to prompt an enquiry:

  • Movement joints packed with grit and debris
  • Earlier reseals applied straight onto the failed bead
  • Frame mastic that has hardened and come away from the wall
  • Hardened, chalky sealant on south-facing or exposed elevations

Shops and cafés around stations like Hassocks station (1 mile north of Clayton) trade from early, so work is timed around them.

Comparing quotes

  • What site paperwork they can supply
  • What the guarantee covers, and for how long
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • How they’ll work around occupants

Questions to ask before you appoint anyone

Accreditations

Trusted. Accredited. Insured.