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

Construction Mastic in Kemsley Street

Mastic packages for new-build and refurbishment projects in Kemsley Street. CHAS accredited and fully insured, with a 12-month guarantee.

  • Caulk cracking where joints are moving more than expected
  • A long mastic snag list close to completion
  • Different trades sealing to different standards
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
Constructionline member
Fully insured: £5m PL

Need construction mastic in Kemsley Street?

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

Questions about Kemsley Street

Can you work around term dates at a campus such as University for the Creative Arts - Rochester?

Yes, holiday working periods are the norm on campus jobs. We are CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.

Is a smaller place like Kemsley Street outside your area?

No. Small places get the same service as large ones. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.

Can you work to our specification?

Specification first, then the maker’s instructions. Preparation, backing and depth follow the product guidance.

Can one quote cover more than one building?

Yes. A group of buildings can go on one quote, with one point of contact across South East England, Greater London and Scotland.

Can you work plot by plot or floor by floor?

Working to your programme, we seal each area as it’s handed over. The sequence is agreed with the site manager at the start and updated as the programme moves.

Can you quote from photographs?

It depends on the job. Simple work can often be priced from photographs, while larger or less clear jobs get a site visit first.

Do you offer coloured sealant?

It depends on the product. Some ranges are wide, others limited, so the available colours are confirmed with the quote.

Construction mastic in Kemsley Street, done properly

Getting a subcontractor through site induction should be simple. We’re a Constructionline member and CHAS accredited, and every applicator holds a CSCS card, with public liability insurance in place. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. If you are dealing with old sealant on a refurbishment that needs stripping before new work and frame perimeters left unsealed or poorly sealed, we can put it right. Searching for sealant specialists in Kemsley Street? Mastic Doctor has worked for contractors, FMs and building owners since 2005.

Around smaller places like Kemsley Street, building work typically means conversions of farm buildings, a few new houses or an extension to a hall or school. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.

Every job we finish is backed by a 12-month workmanship guarantee, wherever the site is. If our installation lets you down in that time, we return and fix it.

The Mastic Doctor team standing beside their branded vans outside an office building
Location
Kemsley Street (ME7)
Wider area
Kent
Cover
A 12-month guarantee
Quotes
Quoted before any work starts
Call
01277 525 020
Page updated
3 November 2026

Doing it in-house

Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.

How the job changes by surface

Kitchens and utility areas

Kitchen joints are sealed after fitting and before final clean. A kitchen-suitable sealant is used and hygienic or food-safe grades wherever food contact is possible.

External facade and movement joints

Brickwork, blockwork and panel movement joints need a sealant with the right movement capability. Depth is controlled with backing rod so the bead bonds to two sides only.

Mastic packages on Kemsley Street sites

Kemsley Street lies roughly 32 miles out from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, so mastic packages have to keep pace with busy programmes. Kemsley Street is in the South East, one of the UK’s drier regions. Winter mornings still bring frost and condensation on frames and panels, which is why external dates are agreed with the site manager.

For contractors refurbishing units at places like Hempstead Valley Shopping Centre (0.9 miles north-west of Kemsley Street), the mastic covers cladding panels, roller-door and window perimeters. For contractors on a campus like University for the Creative Arts - Rochester, 4.5 miles north-west of Kemsley Street, facade and perimeter sealing has to fit around students and term dates.

Kemsley Street is about 3 miles south of Gillingham, in Kent. Across the ME7 postcode area, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Our Kent coverage takes in 931 places, from busy centres to rural villages. We also cover London, around 32 miles from Kemsley Street.

Postcode districts covered here: ME7. Close to Kemsley Street, our area also takes in Bredhurst (1 mile west), Scragged Oak (1 mile south), Dunn Street (1 mile south-west), Park Wood (1 mile north-east) and Lower Cox Street (1 mile south-east). A short drive away, we cover Maidstone (5 miles south-west), Sittingbourne (6 miles east), Gravesend (11 miles north-west), Faversham (13 miles east), Northfleet (12 miles north-west) and Minster (11 miles north-east).

Local landmarks in Kemsley Street

Recent enquiries here include premises near Levan Strice and Rainham School for Girls. The closest station to Kemsley Street is Rainham (Kent) station, about 2.5 miles north-east. Other landmarks nearby include Medway megaliths (4 miles west) and Allington Castle (4.3 miles south-west). The countryside around Kemsley Street includes Detling Hill and Burham Down.

Map of Kemsley Street © OpenStreetMap contributors

Owners, agents and contractors

Hospitality, education, healthcare, office and retail clients book us directly too. We plan around the way the building is used, so the building keeps working while we do.

FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.

From enquiry to sign-off

We bring the products specified for the job, along with primers and backing rod. Joint faces are cleaned back to sound, dry surfaces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. For a building around Kemsley Street, 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. First we look at the scope on site or from drawings.
  2. You receive a fixed quote covering scope, products and sequence.
  3. Paperwork is agreed and applicators are inducted on site.
  4. Sealing follows the programme as areas are released.
  5. Problems we find, such as oversized gaps, are raised straight away.
  6. The package is closed out, snags cleared and backed by our 12-month guarantee.

Before we start on site

  • Clear stock, furniture or equipment away from the joints
  • Point out any areas we must not close
  • Explain the parking and delivery arrangements

Ask for a quote

To get a fixed quote, give us a call on 01277 525 020 or send photos by email, telling us the site location and the nature of the job. You can also send details through our quote form.

Get a price

Related advice

When it isn’t the sealant

A few problems need another trade or a different fix, and we point that out rather than sealing over them:

  • Approving fire stopping as compliant
  • Defective windows, doors or glazing units (the supplier or installer’s job)
  • Frames fitted out of tolerance

If you are not sure, just call 01277 525 020 or email drawings and photos and we’ll give you a straight answer before you book.

Where we work in Kemsley Street

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

Common problems we fix in Kemsley Street

A new building moves while it dries and settles. Plaster, screeds, timber and blockwork all shrink as they lose moisture, which opens up internal joints, particularly where caulk has been used in a joint that moves. Picking a flexible sealant where there’s movement keeps snags down.

Any of the following is a good reason to get the joints checked over:

  • External joints sealed in damp or cold conditions that are now failing
  • Failed sealant in an existing building being refurbished
  • Frame gaps too wide for sealant alone
  • Cracks opening in caulked internal joints

School extensions, at buildings such as Deanwood Primary School, normally run to the summer holidays, mastic included.

Questions to ask before you book

  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • Proof of insurance
  • What the guarantee covers, and for how long
  • The named product and why it was chosen

Questions to ask before you appoint anyone

Accreditations

Trusted. Accredited. Insured.