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

Boarshead commercial sealant contractors

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

  • Movement joints packed with grit and debris
  • A top-up bead over failed sealant, now lifting
  • Sanitary sealant that has gone black and patchy
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Commercial sealant contractors near Boarshead

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Sealant applicators in Boarshead

Getting a price for commercial sealant contractors in Boarshead doesn’t need to be drawn out. Send photos, drawings or a schedule of the joints through our quote form. If the joints need seeing in person, a site visit comes first, and a fixed quote for the agreed scope follows. Site teams most often ask us about frame mastic that has hardened and come away from the wall and expansion joints with the sealant torn out, across floor and threshold joints, washrooms and tea points and kitchen worktops and splashbacks. Searching for sealant specialists in Boarshead? Mastic Doctor has worked for contractors, FMs and building owners since 2005.

A lot of what we do in Boarshead is replacing sealant that has done its years: hardened, cracked or shrunk away from the faces, and letting water or dirt in.

Work in smaller places such as Boarshead 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.

Our workmanship is guaranteed for 12 months, wherever the site is. If our installation lets you down in that time, we return and fix it.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Boarshead (TN6)
Region
East Sussex
Guarantee
A 12-month guarantee
Quotes
A fixed quote before we start
Phone
01277 525 020
Updated
3 November 2026

Do you need commercial sealant contractors in Boarshead?

External sealant takes a steady beating from the weather. Sunny elevations dry the surface out and exposed ones take driving rain; in time the surface chalks, hardens and cracks. Once it stiffens, the joint opens up at the next big temperature swing.

If one of these sounds familiar, it’s time for a closer look:

  • Leaks that seem to come through a sealant line
  • Black mould through washroom sealant that won’t clean off
  • Gaps behind commercial kitchen worktops and sinks
  • Layers of sealant, all of them failing

A business with units at Crowborough Business Park and Lexden Lodge Industrial Estate needn’t use two contractors for its sealant.

What to look for in a quote

  • Health and safety accreditation such as CHAS
  • What the guarantee covers, and for how long
  • Can the work be phased to keep areas open?
  • Their approach to joint depth and backing

Our contractor checklist

How the job changes by surface

Washrooms and toilets

Mould that has grown into washroom sealant can’t typically be cleaned out. The lasting answer is removal, preparation and a new sanitary bead, room by room if that suits the building.

Window and door perimeters

Where frames meet the surrounding wall, sealant is the weather line. 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.

Honest limits

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

  • Broken glass or blown double-glazed units
  • Water from a services leak rather than a joint
  • Roof leaks that only look like a joint problem

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

What we seal

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

From enquiry to sign-off

We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. For a building around Boarshead, tell us how to find it and who will meet us. Send that with the details and we’ll confirm the plan with the quote.

  1. Send details through our quote form, or ask for a site visit.
  2. We diagnose the cause of failure and price a fixed scope.
  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. A suitable product for each joint goes in at the right depth and is tooled.
  6. A final walk-round, then the 12-month guarantee applies.

What we need from you

  • Send asbestos survey details if the building is pre-2000
  • Tell staff and tenants when we will be in
  • Explain the parking and delivery arrangements

Quotes

Photos, drawings or a schedule of the joints and a fixed quote comes back to you. Where a site visit makes more sense, we’ll arrange one.

Get a quick quote

Related advice

Doing it in-house

For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.

Frontages, fit-outs and joints in Boarshead

The South East is one of the drier parts of the UK. That helps, but frost and condensation on glass and coated frames still stop outside sealing on some winter mornings. Boarshead is about 32 miles from central London. The South East around the capital has large numbers of business parks, offices and retail centres, especially around the motorway corridors. If you have premises across the region, one contractor can cover them all.

Offices at parks like Crowborough Business Park, 1.1 miles south-west of Boarshead, have receptions, kitchens and glazed partitions where a tidy joint matters. Offices and shops close to stations such as Eridge station, 1.4 miles north-east of Boarshead, tend to be busy all day, so sealant work is planned around opening hours.

Boarshead is about 2 miles north-east of Crowborough, in East Sussex. Anywhere in TN6, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Boarshead is one of 308 places in East Sussex on our list. For work in that direction, see our Brighton page (21 miles or so).

If you need commercial sealant contractors in TN6, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Being close to the A26, Boarshead is easy to get to with materials and equipment. Close to Boarshead, our area also takes in Steel Cross (1 mile south), Jarvis Brook (1 mile south), Crowborough (2 miles south-west), Mott's Mill (2 miles north) and Marden's Hill (2 miles west). A short drive away, we cover Hailsham (15 miles south), Uckfield (8 miles south-west), South Malling (15 miles south-west), Heathfield (8 miles south), Upper Horsebridge (14 miles south) and Cliffe (15 miles south-west).

Local landmarks in Boarshead

Around Boarshead, our work takes us to commercial buildings near The Boars Head Inn. Boarshead’s nearest station is Eridge station, roughly 1.4 miles north-east. Nearby you’ll also find Crowborough War Memorial Hospital (1.8 miles south-west) and Bolebroke Castle (4.9 miles north-west). For a walk, there’s Crowborough Country Park.

Map of Boarshead © OpenStreetMap contributors

For managing agents and facilities managers

Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.

We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Boarshead can sit alongside others in a wider programme.

Questions about Boarshead

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

Yes, sealants come in a wide range of standard colours, and matching to RAL references, cladding, stone or frames is a common request. Available colours for the product are confirmed with the quote.

Is Boarshead too small for you to travel to?

Not at all. Boarshead is within our area. Our area covers London and the South East counties. We plan jobs in smaller places so return trips are kept to a minimum.

Does the weather affect the work?

It can, for external work. 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.

How long before the joints can be used?

The product and site conditions decide that. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.

Is it fine to apply new sealant on top of old?

No. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.

Do you work for facilities managers and managing agents?

Yes. Use our quote form to send the site details, or phone or email us.

Are you CHAS accredited and on Constructionline?

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

Accreditations

Trusted. Accredited. Insured.