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

Commercial sealant contractors in North Street, Medway

Commercial sealant contractors for North Street, from a contractor working since 2005. Fully insured and CHAS accredited.

  • Wall and floor joints that have lost their seal
  • Earlier reseals applied straight onto the failed bead
  • Window and door perimeter joints that have cracked open
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
CHAS accredited
£5m public liability

Commercial sealant contractors in North Street

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

Owners, agents and contractors

Main contractors use us as their sealant subcontractor, on new build and refurbishment alike. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.

When you manage a building on behalf of an owner, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.

Sealant specialists in North Street

Some sealants used before 2000 can contain asbestos, so older stock needs a check first. Before anything is cut out, we ask for the asbestos register or survey. If a material is suspected, work stops until it’s tested (removing asbestos-containing materials isn’t something we do). If you’re dealing with damp patches where an external joint has failed and greasy, split joints in a kitchen or tea point, we can help, on kitchen worktops and splashbacks, external facade joints and movement joints in walls and floors alike. For commercial sealant work in North Street, you deal with one contact from quote to sign-off, whether it’s one building or several.

If you look after more than one building near North Street, the work can be planned as one programme, so standards and paperwork match across every site.

In and around smaller places such as North Street, 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.

We sign every job off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
North Street (ME3)
Wider area
Medway
Cover
12 months on every job
Price
Quoted before any work starts
Call
01277 525 020
Last updated
3 November 2026

What we’re called out for in North Street

Plenty of failed joints were never sealed with the right product. Decorators’ caulk on a joint that moves, acetoxy silicone on stone or metal, or a stiff sealant on a facade will all fail early. BS 6213 gives guidance on choosing construction sealants.

Site and facilities staff are often the first to spot these:

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

A lasting commercial joint around North Street begins with the old bead fully out and the faces clean and dry.

What to look for in a quote

  • How they handle RAMS and site documents
  • What the guarantee covers, and for how long
  • Their plan for phasing and protecting the area
  • Whether their applicators hold CSCS cards

Our contractor checklist

How the quote is worked out

We price every job individually. The main factors are:

  • Phasing around occupants
  • The product specified
  • Removal of failed or old sealant
  • Backing rod, priming and other preparation

The specified product makes a difference, as does the preparation each joint needs. Access, phasing and site rules also count.

Before you send an enquiry

However big the job, these details speed things up:

  • Where the site is, with the postcode
  • Clear photographs of the problem areas
  • Drawings or a marked-up plan, if available
  • Specification clauses that apply

A handful of photographs and a postcode is the fastest way to a quote. Upload them with the quote form, or give us a call on 01277 525 020 or email drawings and photos to discuss it first.

North Street: questions and answers

Is North Street too small for you to travel to?

No. Places such as North Street are covered as much as the big towns. Our area covers London and the South East counties. We plan jobs in smaller places so return trips are kept to a minimum.

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

It can. Wind-driven rain and, closer to the shore, salt air are harder on external joints. We choose the product for the exposure, prime where the manufacturer requires it and size the joint for its movement.

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

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, since fresh sealant will not bond reliably to aged material.

Do you check for asbestos before removing sealant?

It’s possible in older buildings, especially those built before 2000. Before cutting anything out, we ask for the asbestos register or survey, and if something is suspected, work stops until it’s tested.

Do you hold CHAS accreditation?

Yes. We’re CHAS accredited, we are a Constructionline member and we use CSCS-carded applicators.

When is resealing likely to be due?

There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.

How long does a typical visit take?

The duration is planned around your programme and the access we’re given. You will have an expected duration with the quote.

On site: what to expect

Before any cutting starts, the area is protected: masking tape along the joint edges and sheeting over anything nearby. The work itself usually takes anything from part of a day on a short run of joints to several weeks on a large phased package, and our waste is bagged and taken away as we go. If others near North Street need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.

  1. Site photographs, drawings or a visit tell us what’s there and how it has failed.
  2. You get a fixed quote covering removal, preparation and the new sealant.
  3. Sequence, access and working times are settled before the first joint is touched.
  4. Each joint is stripped, cleaned back to sound faces and primed where the maker specifies.
  5. Backing goes in, the new sealant is laid and tooled, and the area is left neat.
  6. Completed areas are signed off with you under our 12-month guarantee.

Getting the site ready

  • Warn occupants and staff about the work
  • Clear stock, furniture or equipment away from the joints
  • Flag any permit to work we’ll need

Quotes

Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, give us a call on 01277 525 020 or email a schedule or drawings.

Get a quick quote

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Commercial sealant contractors in North Street: the local picture

North Street is within about 1 mile of the coast. Exposed frontages near the sea are hard on sealant, so the product has to suit the weather as well as the look. Sea-facing elevations are normally where failed joints show first. North Street is about 30 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. Firms with branches across the South East can use one contractor for every site.

Premises within reach of Gillingham (Kent) station (to the south-west of North Street) often have busy frontages where joints are seen by everyone passing.

North Street is about 5 miles north of Gillingham, in Medway. We cover commercial sites throughout North Street, for single jobs and planned programmes alike. Across Medway, 54 places are covered, including North Street. We also cover London, around 30 miles from North Street.

If you need commercial sealant contractors in ME3, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. If your building is just outside North Street, we cover Tunbridge Hill (1 mile south-west), Kingsnorth (1 mile south), Stoke (1 mile north-east), Fenn Street (1 mile north-west) and Sharnal Street (1 mile west). Bigger towns within reach include Gillingham (5 miles south), Chatham (7 miles south-west), Rochester (6 miles south-west), Rainham (5 miles south), Strood (6 miles south-west) and Luton (6 miles south-west).

Local landmarks in North Street

In North Street, that means premises near The White Horse pub and the streets around them. For rail, the closest station is Gillingham (Kent) station, about 4.2 miles south-west of the centre. Other landmarks nearby include Medway Maritime Hospital (4.9 miles south-west) and Upnor Castle (4 miles south-west). The countryside around North Street includes Bishop Saltings.

Map of North Street © OpenStreetMap contributors

What sealant work can’t fix

Honesty saves time and money. Fresh joints won’t solve:

  • Walls or slabs moving more than any sealant can take
  • Leaks from pipework, wastes or valves (that’s plumbing)
  • Suspect materials that need testing and specialist removal

Not sure which it is? You can phone 01277 525 020 or email a schedule or drawings and we will tell you honestly.

Joints and surfaces we work on

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

Maintenance after handover

Keep the joints in good shape with a few simple steps:

  • Make sure contractors see the asbestos survey before cutting out old mastic
  • Don’t let cleaning or traffic back on before the cure time is up
  • Report cracked or peeling sealant early
  • Make sure ventilation in wet areas is switched on and working

Brief your cleaning team on the joints that have been resealed. Abrasive pads, scrapers and some strong chemicals damage sealant surfaces, while a neutral cleaner and a soft cloth do no harm.

Sealant rarely fails all at once across a building. A few splits this year typically mean more next year. We can assess the lot and suggest what to do now and later.

Accreditations

Trusted. Accredited. Insured.