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

Sealant specialists in West Street

Looking for commercial sealant contractors in West Street? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • Damp patches where an external joint has failed
  • Weathered facade sealant that no longer flexes
  • Untidy joints in a reception, shop floor or lobby
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
South East, London & Scotland
Constructionline member
Fully insured: £5m PL

Commercial sealant contractors across West Street

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

Work for main contractors and building owners

Housing associations and managing agents often need work done across blocks and communal areas. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.

FMs need a contractor who is easy to get on site. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm with the quote.

Commercial sealant contractors in West Street, done properly

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. Externally it keeps rain out of frame perimeters, panel joints and movement joints. We deal with internal and external sealant joints alike. We work on movement joints in walls and floors, floor and threshold joints and window and door perimeters, and the usual reasons a site gets in touch are greasy, split joints in a kitchen or tea point and layers of sealant, all of them failing. A specialist sealant contractor works differently from a general builder: on jobs in West Street, preparation and product choice get the time they need.

Occupied buildings in West Street need the work phased: washrooms in turn, floors in sections and entrances kept open.

Work in smaller places such as West Street tends to come one building at a time: a pub kitchen, a hall, a small office. We plan the visit so everything on the list is done in one go, with the right products and colours on hand.

Every job we finish is backed by a 12-month workmanship guarantee. If a joint we sealed fails because of how it was installed, we come back and put it right.

Mastic Doctor team members lined up next to their branded vans outside an office building
Location
West Street (ME17)
Region
Kent
Guarantee
12 months on our workmanship
Quotes
Quoted before any work starts
Call
01277 525 020
Updated
3 November 2026

What we’re called out for in West Street

Outside, sunlight and rain wear sealant down year after year. UV hardens the surface while wind and rain work at the edges; in time the surface chalks, hardens and cracks. Once it stiffens, the joint opens up at the next big temperature swing.

Most enquiries start with something like this:

  • Frame mastic that has hardened and come away from the wall
  • Wall and floor joints that have lost their seal
  • Layers of sealant, all of them failing
  • Hardened, chalky sealant on south-facing or exposed elevations

For premises near Lenham station, 1.6 miles south-west of West Street, footfall is part of the plan: work is phased so shops and offices keep trading.

Before you book anyone

  • Who will actually carry out the work
  • Do they follow the manufacturer’s priming guidance?
  • Is the sealant right for the movement and the substrate?
  • What level of public liability insurance do they hold?

How to choose a sealant contractor

What happens if it’s left?

Spot repairs have their place. Where the remaining sealant is just as old, it tends to fail soon after, so access and set-up end up being paid for twice. Where it helps, we quote a patch and a full reseal side by side. Older rural buildings around West Street move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.

We don’t publish prices, since every building and every scope is different. Call for a quote and we’ll price your job on its own details.

Why us?

  • One number for every site we cover
  • Fully insured, including public liability cover
  • Work carried out by CSCS-carded applicators
  • Commercial sealant work since 2005

Take a look at our cost guide and our accreditations.

Common questions from West Street clients

Can you supply sealant in our brand colour for a site in West Street?

Yes, sealants come in a wide range of standard colours, and matching to RAL references, cladding, stone or frames is a common request. Send colour references or photos and we’ll confirm what’s available for the product.

Is a smaller place like West Street outside your area?

Not at all. West Street is within our area. Our area covers London and the South East counties. Send photos and a list of what needs doing, and we’ll plan the job to need as few trips as possible.

How long will the new sealant last?

There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.

Do you hold CHAS accreditation?

Yes. We’re CHAS accredited and a Constructionline member.

How soon can the area be used again?

That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.

Does commercial sealant work come with a guarantee?

The work is guaranteed for 12 months. Should a joint we sealed give trouble during those 12 months, let us know and we’ll look at it.

Do you work for facilities managers and managing agents?

Yes. Use our quote form to send the site details, or phone or email us, and we will confirm any paperwork you need with the quote.

Honest limits

We seal joints; we don’t mend everything behind them. On its own, sealant can’t deal with:

  • Faulty windows rather than failed perimeter sealant
  • Suspect materials that need testing and specialist removal
  • Structural cracks or movement the joints weren’t designed for

If you are not sure, just speak to us on 01277 525 020 or email a schedule or drawings and we will give you a straight answer before you book.

Joints and surfaces we work on

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

Diagnose, treat, sign off

Before any cutting starts, the area is protected: masking tape along the joint edges and sheeting over anything nearby. On site, the work normally takes anything from part of a day on a short run of joints to several weeks on a large phased package, and we clear our waste as we work. Smaller jobs around West Street can be grouped with others nearby. A fixed quote is given before anything starts.

  1. First, details reach us through the quote form or a site visit.
  2. The cause is diagnosed and the scope priced as a fixed quote.
  3. Where parts of the building must stay open, the work is phased.
  4. Old sealant is cut out completely, never sealed over.
  5. Each joint gets a suitable sealant, laid to depth and tooled.
  6. A final walk-round, then the 12-month guarantee applies.

Preparing the site

  • Explain the parking and delivery arrangements
  • Confirm the product named in the specification
  • Let us know about inductions and permits

Quotes

Let us know the site, the scope and your timescale, and a fixed quote will follow. The easiest way is to speak to us on 01277 525 020 or email us.

Get a price

Advice

What West Street’s businesses ask us to seal

West Street sits in one of the drier corners of the country, the South East. That helps, but frost and condensation on glass and coated frames still stop outside sealing on some winter mornings. West Street lies roughly 39 miles out from central London. The commuter belt holds a great many offices, retail parks and business parks. Multi-site occupiers here often want one sealant contractor across all their buildings.

Parks like Roebuck Business Park (to the west of West Street) see tenants come and go, and every move-in brings joints to seal.

West Street is about 6 miles south of Sittingbourne, in Kent. Our applicators travel to West Street for work on sealant joints. We work across 931 places in Kent, from busy centres to rural villages. For work in that direction, see our London page (39 miles or so).

We cover the ME17 postcode districts. Nearby places we also cover include Woodside Green (1 mile south-east), Payden Street (1 mile east), Lenham (1 mile south-west), Warren Street (2 miles east) and Wichling (2 miles north-east) for sealant joints. Nearby towns on our patch include Maidstone (9 miles west), Ashford (10 miles south-east), Canterbury (15 miles east), Sittingbourne (6 miles north), Whitstable (15 miles north-east) and Faversham (8 miles north-east).

Around West Street

In West Street, that means premises near Kiln Wood, among other places. West Street’s nearest station is Lenham station, roughly 1.6 miles south-west of the centre. Well-known places in the area include Newnham Castle (3.9 miles north-east).

Map of West Street © OpenStreetMap contributors

Different surfaces, different methods

Window and door perimeters

The perimeter joint between a frame and the structure keeps rain out of the reveal. Failed perimeters are cut out and cleaned, backing goes into deeper gaps, and the joint is resealed with a low-modulus neutral-cure silicone or another suitable product.

Washrooms and toilets

Washroom joints take water, cleaning chemicals and constant use. Old sealant comes out and a sanitary silicone with anti-mould additives goes in, with phased work so some facilities stay open.

Accreditations

Trusted. Accredited. Insured.