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

Construction and new-build mastic in Breach, Kent

Mastic packages for new-build and refurbishment projects in Breach and across Kent. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Existing joints on a refurb that need cutting out and resealing
  • Internal caulk splitting as the building dries out
  • Sanitary sealant damaged by following trades
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
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
Constructionline member
Fully insured: £5m PL

Construction mastic for businesses in Breach

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

Do you need construction mastic in Breach?

A joint without backing rod or bond-breaker often fails early. Bonded to the base of the joint and both sides, sealant can’t stretch evenly.

Common reasons buildings call us in:

  • Mastic snags holding up handover
  • Missed perimeter joints on a new elevation
  • Sanitary sealant damaged by following trades
  • Perimeter gaps outside the sealant’s range

School extensions, at buildings such as Newington Church of England Primary School, usually run to the summer holidays, mastic included.

What to look for in a quote

  • How joint depth will be controlled
  • How they’ll work around occupants
  • What the guarantee covers, and for how long
  • Which product they’ll use, and why it suits the joint

Choosing a commercial sealant contractor

About our construction mastic in Breach

Refurbishment work needs a slightly different approach from new build. Old beads come out completely, as fresh silicone can’t grip old and the asbestos survey is checked first on older stock. After that, the joints are prepared and sealed to the specification. We work on brick and block movement joints, window and door perimeters and internal decorators’ caulk, and the failures we’re asked to look at most are oversized or tapered gaps around new frames and a mastic package split between trades with no clear owner. One point of contact handles commercial sealant work in Breach from the first photographs to the final walk-round, whether it’s one building or several.

Conversions of older rural buildings near smaller places such as Breach bring stone, flint, brick and timber up against new glazing. Those joints need a sealant that suits an uneven, sometimes porous surface, and often a colour chosen for the building.

Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.

Location
Breach (ME9)
Region
Kent
Guarantee
12 months on every job
Quote
Quoted before any work starts
Call
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

FAQs: Breach

Do you cover business parks and estates near Breach, such as Newington Industrial Estate?

Yes. Our area takes in Breach and its surroundings, with estates and business parks such as Newington Industrial Estate included. Send details of the unit and the work through our quote form for a quick quote.

Is Breach off your patch?

Not at all. Breach 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.

How long does a job like this take?

It depends on the scope, but the work normally takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes. For bigger or phased jobs, we will set out a timescale with the quote.

Can the sealant be colour-matched?

In many cases, yes. Sealants are made in a wide range of standard colours, and matching to RAL references or nearby finishes is commonly requested. We will confirm the colours available for the specified product.

How long before the joints can be used?

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

Can you handle several sites?

Yes. We take on portfolio and planned maintenance work, with each site phased to suit its occupants.

How do you deal with asbestos in old sealant?

Asbestos is possible in some older mastics, particularly in buildings from before 2000. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and work stops until any suspect material has been tested. We don’t remove asbestos-containing materials.

From enquiry to sign-off

Diagnose, treat, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. Smaller jobs around Breach can be grouped with others nearby, which keeps travel down. A fixed quote is given before anything starts.

  1. Drawings, specification and programme come to us.
  2. We take off quantities and return a fixed quote.
  3. The sequence is agreed with the site manager.
  4. Plots or floors are sealed as they’re handed over.
  5. Joints are prepared, backed and sealed to the specification.
  6. After snagging, the work is handed over under our 12-month guarantee.

Before we start on site

  • Point out parking and an unloading spot
  • Make sure the joints can be reached
  • Tell us which areas need to stay in use

Request a quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. For smaller jobs, photos and a description will do.

Ask for a quote

Read more

General trades versus a specialist

A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

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. For that reason, many FMs and contractors use a sealant specialist from the outset.

After the work

A few simple habits keep the new joints working:

  • Ask installers to correct oversized gaps first
  • Get the mastic subcontractor involved early in the programme
  • Release areas for mastic once other trades have finished in them
  • Protect sealed areas from following trades

Any damage after we have finished should go on the snag list straight away. We can return to clear snags before handover.

Sanitary joints that fail early become defects soon after occupation. Leaks behind showers and basins damage finishes and floors, and the repair falls into the defects period. Getting the product and preparation right first time avoids that.

What the job involves on each surface

Snagging before handover

Damaged, missed or untidy joints make up most snag lists. We price snagging as part of the package or as a separate visit.

Fire-rated sealant where specified

Fire-rated sealant is one type of fire-stopping product. Collars, wraps, batts and boards are specified for other services so we’ll flag where the detail needs something different. Tell us what records you need and we will confirm with the quote.

Construction mastic in Breach: the local picture

Breach sits close to the coast, within about 3 miles. Schemes this close to the sea see their facade joints tested by wind and rain from the day they’re sealed, so we check the specified product suits the exposure before the first bead. Breach sits in one of the drier corners of the country, the South East. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, so we time external mastic for dry faces and agree it with the site team.

New units and refits on sites such as Newington Industrial Estate, 0.6 miles to the south of Breach, need their panel and perimeter joints sealed to the specification. For a contractor working at a hospital such as Medway Maritime Hospital, 5 miles west of Breach, perimeter and facade sealing is planned around patients and deliveries.

Breach is about 3 miles east of Gillingham, in Kent. We cover commercial sites throughout Breach, for single jobs and planned programmes alike. Our Kent coverage takes in 931 places, large and small. London is covered too, around 34 miles from Breach.

Anyone looking for construction mastic in ME9 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Sites close to Breach are covered too, including Newington (1 mile south-east), Lower Hartlip (1 mile south-west), Lower Halstow (1 mile north-east), Upchurch (1 mile north) and Moor Street (1 mile west). Further afield, our area takes in Maidstone (9 miles south-west), Sittingbourne (4 miles east), Gravesend (13 miles west), Faversham (11 miles east), Northfleet (14 miles west) and Minster (8 miles north-east).

Around Breach

Recent enquiries here include premises near Berengrave Chalk Pit, The Wheatsheaf pub and Leigh Academy Rainham, among other places. Breach’s nearest station is Newington station, about 0.8 miles south-east of the centre. Nearby you’ll also find Court Hall Museum (3.5 miles east) and Medway Maritime Hospital (5 miles west). For a walk, there’s Bishop Saltings.

Map of Breach © OpenStreetMap contributors

Honest limits

Some faults sit outside our scope, and we point that out rather than sealing over them:

  • Rework caused by others damaging completed areas
  • Deciding which fire-stopping product a penetration needs
  • Glazing units that are cracked or misted

If in doubt, ring 01277 525 020 or send details through our quote form and we will say what we think before you book.

Surfaces we seal

  • Internal decorators’ caulk
  • Floor and skirting junctions
  • Cladding and panel joints
  • Window and door perimeters
  • Sanitary and kitchen joints
  • Brick and block movement joints
Accreditations

Trusted. Accredited. Insured.