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

Construction Mastic in Sharnal Street

Our CSCS-carded applicators take on mastic packages for new-build and refurbishment projects in Sharnal Street. Send details for a fixed quote.

  • Mastic snags holding up handover
  • Different trades sealing to different standards
  • Missed perimeter joints on a new elevation
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS & Constructionline
£5m public liability

Construction mastic near Sharnal 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

Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Sites in Sharnal Street can sit alongside others in a wider programme.

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. Keys, access and contacts can be agreed in advance.

Construction mastic in Sharnal Street, done properly

Refurbishment work needs a slightly different approach from new build. Old beads come out completely, as fresh silicone can’t grip old. New and existing joints then get the same preparation. If you have perimeter gaps outside the sealant’s range and early adhesion failures on new external joints, we can help, whatever the surface. A specialist sealant contractor works differently from a general builder: on jobs in Sharnal Street, preparation and product choice get the time they need.

Construction in and around smaller places such as Sharnal Street is often barn conversions, small groups of houses or extensions to halls and schools. Perimeters, facade joints and internal sealant all need doing properly, however small the scheme.

The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.

Place
Sharnal Street (ME3)
Region
Medway
Cover
A 12-month guarantee
Quote
Quoted before any work starts
Telephone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

What we can’t put right

A few problems need another trade or a different fix, and we say so rather than covering them up:

  • Rework caused by others damaging completed areas
  • Deciding which fire-stopping product a penetration needs
  • Specifying the product where the designer hasn’t

If you’re not sure, just give us a call on 01277 525 020 or email us and we’ll give you a straight answer.

What we seal

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

What sets the cost

Sealant work doesn’t have a standard rate, since sites vary so much. What we take into account:

  • How much there is to seal
  • Specialist products, such as fire-rated or hygienic sealants
  • Induction, permit and paperwork requirements
  • Travel to remote or island sites

The specified product makes a difference, as does the preparation each joint needs. Access, phasing and site requirements come into it too.

Before you send an enquiry

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

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

If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photographs and a few notes.

Keeping the joints sound

After handover, these steps help:

  • Ask for joint and product checks before the package is urgent
  • Flag uneven or tapered frame gaps early
  • Don’t schedule sealing before decorators and flooring are done
  • Ask cleaners to use soft cloths around fresh sealant

Any damage after we’ve finished should go on the snag list right away. We can return to clear snags before handover as agreed in the quote.

External joints sealed in poor weather are a common cause of early failure. Holding off until conditions suit avoids callbacks so external sequencing builds in some flexibility.

Why deal with it now?

Sealing over damaged or contaminated new joints might save a day. Sealant can’t grip a contaminated or existing bead. Damaged joints are removed and resealed from clean faces. Converted and older buildings near places like Sharnal Street 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. Site requirements like inductions and permits play a part as well.

Why us?

  • One phone line for London, the South East and Scotland
  • Colours chosen to suit frames, cladding or finishes where possible
  • 12 months’ guarantee on every job
  • Our applicators hold CSCS cards

See our cost guide or our accreditations and insurance.

Questions about Sharnal Street

Our building in Sharnal Street is near the coast: does that change the sealant?

It can. Coastal exposure works external joints harder than inland weather. Product choice and preparation matter more, and sea-facing elevations are worth inspecting more often.

Could you schedule work at a campus like University of Greenwich - Medway for the vacation?

Yes. We plan campus work around teaching, exams and residence turnarounds. We’re CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

Do you do fire-rated sealing on new builds?

Fire-rated sealant can be included where it’s specified, installed to the product’s tested detail. The design and sign-off belong to the designer, fire engineer or building control.

What site paperwork can you supply?

Each site asks for different documents, so tell us what you need and we’ll confirm it when we quote.

Do you take on small jobs?

Single areas, one-off repairs and whole buildings are all quoted the same way: send details, get a fixed quote, we seal, guaranteed.

How do we ask for a quote?

It works in four steps: send details, get a quote, we seal, guaranteed. The first step only needs photos and a postcode.

Do you take on mastic snagging only?

Yes. We can work through a mastic snag list area by area before handover and damaged joints are redone properly.

Contractors’ notes for Sharnal Street

Sharnal Street sits close to the coast, within about 2 miles. On a coastal site, facade and perimeter joints face driven rain and, closer to the beach, salt, so we check the specified product suits the exposure before the first bead. Sharnal Street lies roughly 29 miles out from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, and main contractors there need mastic that keeps to the programme.

For a contractor working at a hospital such as Medway Maritime Hospital, which lies south of Sharnal Street, perimeter and facade sealing is planned around patients and deliveries. On a campus such as University of Greenwich - Medway (3.4 miles south-west of Sharnal Street), new teaching buildings and residences are normally built and refurbished around the academic year. When a school such as High Halstow Primary Academy is extended or refurbished, the mastic package is often squeezed into the holidays.

Sharnal Street is about 5 miles north of Gillingham, in Medway. Across the ME3 postcode area, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. We work across 54 places in Medway, large and small. For work in that direction, see our London page (29 miles or so).

Work on mastic packages is covered throughout ME3, whatever the building. If your building is just outside Sharnal Street, we cover Fenn Street (1 mile north-east), High Halstow (1 mile north-west), Tunbridge Hill (1 mile south-east), Kingsnorth (1 mile south-east) and Hoo St Werburgh (1 mile south-west). Further afield, our area takes in Gillingham (5 miles south), Chatham (6 miles south), Rochester (5 miles south-west), Rainham (6 miles south), Strood (5 miles south-west) and Luton (5 miles south).

Around Sharnal Street

In Sharnal Street, that means premises near The Hundred of Hoo Academy and The Red Dog Public House, among other places. The closest station to Sharnal Street is Gillingham (Kent) station, roughly 3.9 miles south. Other landmarks nearby include Upnor Castle (3.2 miles south-west) and Medway Maritime Hospital (4.5 miles south). Open spaces near Sharnal Street include Bishop Saltings.

Map of Sharnal Street © OpenStreetMap contributors

From enquiry to sign-off

On arrival, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before any cutting starts, with the work itself normally taking as long as the agreed sequence needs, which comes down to joint lengths, access and handover dates. Rural sites near Sharnal Street may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.

  1. We price from the drawings, specification and programme you send.
  2. You receive a fixed quote listing scope, products and phasing.
  3. Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
  4. Areas are sealed plot by plot or floor by floor as the trades hand them over.
  5. Every joint is prepared, set to depth and sealed with the specified product.
  6. We close out snagging and hand over with a 12-month guarantee.

Before we start on site

  • Share the asbestos register for older buildings
  • Tell us your opening times and when work is allowed
  • Tell us which areas need to stay in use

Getting a fixed quote

Every quote starts with the facts: the joints involved, quantities, access and the product called for. Share whatever details you have and we will fill any gaps with a visit.

Get a quick quote

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Accreditations

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