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

Commercial sealant contractors in Colwood, West Sussex

Sealant work for offices, shops, hotels and other commercial buildings across Colwood, by CSCS-carded applicators. CHAS accredited and fully insured.

  • Hardened, chalky sealant on south-facing or exposed elevations
  • Window and door perimeter joints that have cracked open
  • Mouldy silicone around WCs, urinals and vanity tops
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Commercial sealant contractors near Colwood

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

About our commercial sealant contractors in Colwood

Most of the buildings we seal stay open while we are there. Tell us your site hours and access windows and we will plan around them; phasing keeps some washrooms, kitchens or entrances available while others are done. It’s the same approach in offices, retail units, hotels, schools and healthcare buildings. We work on external facade joints, window and door perimeters and washrooms and tea points, and the usual reasons a site gets in touch are window and door perimeter joints that have cracked open and layers of sealant, all of them failing. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Colwood is the same: the right product in a properly prepared joint.

The most common commercial job in Colwood is resealing joints that have simply reached the end of their life: split, chalky or peeling, with leaks or mould starting behind it.

In and around smaller places such as Colwood, the commercial buildings we are asked about are often pubs, shops, village halls and barns converted to offices. Each has kitchens, washrooms and frames whose joints need renewing in time.

What our 12-month guarantee covers is the way we did the job: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

The Mastic Doctor team standing beside their branded vans outside an office building
Place
Colwood (RH17)
Region
West Sussex
Guarantee
12 months on every job
Quote
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026

What happens if it’s left?

Leaving a failed joint rarely saves money. Water past a frame perimeter or a washroom joint can reach plasterboard, insulation, floor coverings and the ceiling below. Dealing with it while the damage stops at the bead is the cheaper route. Converted and older buildings near places like Colwood tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.

Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

Why clients in Colwood choose us

  • Products installed to the manufacturer’s instructions
  • 12-month guarantee on workmanship
  • Public liability insurance in place
  • Health and safety: CHAS accredited

Read how commercial sealant jobs are priced and our accreditations and insurance.

Diagnose, treat, sign off

We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. Jobs in and around smaller places like Colwood are usually planned as a single visit, so we ask for photographs and rough sizes first. That way the right products come on the day.

  1. Send details through our quote form, or ask for a site visit.
  2. The cause is diagnosed and the scope priced as a fixed quote.
  3. Work is phased around your occupiers where areas need to stay in use.
  4. Old sealant is cut out completely, never sealed over.
  5. Each joint gets a suitable sealant, laid to depth and tooled.
  6. We check the work with you, and the 12-month guarantee starts.

Getting the site ready

  • Tell us what induction or permit system the site runs
  • Tell us which areas need to stay in use
  • Warn occupants and staff about the work

Quotes

To get a fixed quote, call 01277 525 020 or email a schedule or drawings. Our quote form is another easy route.

Ask for a quote

Related advice

What the job involves on each surface

Facade and cladding joints

Facade sealant failures can be hard to spot from the ground. Photos from a closer viewpoint help us price, and we’ll confirm the colours available for the specified product.

Window and door perimeters

Inside, cracked sealant around frames and window boards is common. The product depends on whether the joint will be painted.

Questions about Colwood

Can you work at a site such as Crosspot Industrial Estate, by Colwood?

Yes, sites like Crosspot Industrial Estate are within our area, along with the rest of Colwood. Photos and a short description are enough for a first look.

Do hotels near Colwood have to close for sealant work?

Rarely. Rooms or floors are done in turn, so the rest of the hotel keeps trading. Housekeeping and our team agree each day’s rooms.

Are you CHAS accredited and on Constructionline?

Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.

Are your applicators CSCS-carded?

Yes. Our applicators hold CSCS cards.

When can the area be used after sealing?

We will confirm how long the chosen product needs to cure, and sign any area that should be left alone.

What do you need from us to quote?

Send what you have, even a few photographs and rough lengths. We follow up with questions or a visit where needed.

Is Colwood in your area?

Yes. Colwood falls within our area, and you can speak to us on 01277 525 020 or email drawings and photos to get started.

Keeping the joints sound

To get the most from the new sealant:

  • Act on the first lifting edges rather than waiting
  • Check sealant as part of routine building inspections
  • Keep washroom and kitchen extraction working
  • Keep barriers up until the new sealant has cured

In washrooms and kitchens, extraction makes a real difference to sealant life. Extraction that isn’t working keeps the joints wet, and mould follows damp. It’s worth having fans checked while the sealant is fresh.

Occupiers often notice failing sealant before the facilities team does, and in a hotel, office or shop it makes the whole space look neglected. Replacing it on a planned cycle keeps complaints down.

Signs you need commercial sealant contractors in Colwood

Washrooms and kitchens wear sealant out in their own way. Damp, harsh cleaning products and poor ventilation let mould take hold inside the bead, and once established it rarely cleans out. Replacement with a sanitary anti-mould silicone is the lasting answer.

It’s worth sending us details if you spot any of the following:

  • Weathered facade sealant that no longer flexes
  • Earlier reseals applied straight onto the failed bead
  • Mouldy silicone around WCs, urinals and vanity tops
  • Shrunken sealant along kitchen worktops and splashbacks

Trade counters and showrooms on estates such as Crosspot Industrial Estate (1.5 miles south-east of Colwood) need neat joints where customers see them.

Comparing quotes

  • What the guarantee covers, and for how long
  • Health and safety accreditation such as CHAS
  • How the joint faces will be prepared and primed
  • Will RAMS and insurance details be available?

Questions to ask before you appoint anyone

Sealant on show in Colwood’s commercial buildings

A number of hotels sit less than 2 miles from Colwood. Refits in hotels bring joints at vanity tops, bar counters and reception desks where the colour has to suit the scheme. Less than 3 miles from Colwood there are at least three named estates and business parks. Tenant changes on such sites bring fit-outs, and fit-outs bring new joints, often in a colour the occupier specifies.

Sites a few miles apart, such as Crosspot Industrial Estate and Oakendene Industrial Estate, can share one programme and one point of contact.

Colwood is about 5 miles north-west of Burgess Hill, in West Sussex. Looking for commercial sealant contractors in Colwood? We can help. Colwood is one of 373 places we cover in West Sussex. Our Brighton page has more on work in that area, about 13 miles away.

Anyone looking for commercial sealant contractors in RH17 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Among the streets we cover are Earwig Lane and Cross Colwood Lane, and sites on any of them can send details for a fixed quote. Close to Colwood, our area also takes in Crabtree (1 mile north-west), Lower Beeding (2 miles north-west), Slaugham (3 miles north), Plummers Plain (3 miles north) and Monk's Gate (3 miles north-west). Bigger towns within reach include Crawley (8 miles north), Horsham (6 miles north-west), Worthing (15 miles south-west), Haywards Heath (6 miles east), Burgess Hill (5 miles south-east) and East Grinstead (13 miles north-east).

What’s near Colwood

Around Colwood, our work takes us to commercial buildings near Leonardslee. Nearby you will also find The Dene Hospital (3.8 miles south-east) and Cuckfield Museum (3.7 miles east). For a walk, there’s Blunts Wood and Paiges Meadow.

Map of Colwood © OpenStreetMap contributors

What affects the price in Colwood

The price varies from site to site. It mainly depends on:

  • Whether old sealant has to be cut out first
  • How accessible the joints are
  • Working within restricted access windows
  • How much there is to seal

Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you’ll have a fixed figure to work with.

What to include in your enquiry

Whether it’s one area or a whole building, these details speed things up:

  • Drawings or a marked-up plan, if available
  • The product your specification calls for
  • The site address and postcode
  • Whether an asbestos survey exists

Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we will arrange a site visit.

Accreditations

Trusted. Accredited. Insured.