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

Construction and new-build mastic in Claygate, Kent

Mastic packages for new-build and refurbishment projects across Claygate, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Cracks opening in caulked internal joints
  • Frame gaps too wide for sealant alone
  • Inconsistent sealant finishes from plot to plot
1
Send details
Photos, drawings or a schedule, or we visit.
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
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS accredited
Fully insured: £5m PL

Construction mastic near Claygate

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Why it’s worth doing now in Claygate

A cheaper sealant can look like an easy saving on a large package. The saving is small next to the cost of callbacks and defects. We price the specified product and will tell you plainly where an alternative would or wouldn’t work. Around Claygate, it’s better to renew all the failing joints at once, rather than one at a time. Send photos of each area and we’ll quote for the lot.

Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote.

What you get with us

  • Our applicators hold CSCS cards
  • Colour agreed before work starts
  • Health and safety: CHAS accredited
  • Constructionline member

Read what affects the cost or our accreditations and insurance.

How we handle construction mastic in Claygate

Getting a subcontractor through site induction should be simple. We’re a Constructionline member and CHAS accredited, and every applicator holds a CSCS card, and we’re fully insured. RAMS, an insurance certificate and CSCS details can be confirmed with the quote if you tell us what you need. We work on window and door perimeters, cladding and panel joints and sanitary and kitchen joints, and the failures we’re asked to look at most are window and door perimeters that won’t pass inspection and old sealant on a refurbishment that needs stripping before new work. A specialist sealant contractor works differently from a general builder: on jobs in Claygate, preparation and product choice get the time they need.

In the countryside around places like Claygate, conversion schemes put new frames into old stone, flint, brick or timber. Those joints need a sealant that suits an uneven, sometimes porous surface, and often a colour chosen for the building.

Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we are clear about what is covered before work starts.

Where
Claygate (TN12)
Wider area
Kent
Cover
A 12-month guarantee
Quote
Fixed quote, scope in writing
Call
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Aftercare for building managers

For the best life from the joints:

  • Keep scrapers and abrasive pads off new beads
  • Release areas for mastic once other trades have finished in them
  • Record the products used in the O&M file
  • Check frame gaps are within the sealant’s range before sealing

After we have sealed an area, it helps to keep other trades from damaging the joints. Fresh sealant needs its cure time before it’s cleaned, painted near or knocked, and that time depends on the product, temperature and joint depth.

Frames with gaps too wide for sealant need sorting before the mastic goes on. Filling a wide gap with sealant alone sets up a failure so packing or adjustment by the installer comes first. We raise them during our first walk of the area.

Quoting for work in Claygate

We price every job individually. The main factors are:

  • Whether the work must be split into stages
  • Specialist products, such as fire-rated or hygienic sealants
  • Induction, permit and paperwork requirements
  • Whether old sealant has to be cut out first

What a job costs comes down to how many linear metres there are, what has to come out first and how the joints are reached. Call for a fixed quote when you’re ready.

Sending details for a quote

To price the job accurately, we need a clear picture of the site. Send us:

  • Access details, including height
  • Specification clauses that apply
  • The postcode of the building
  • Any dates the work must fit around

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, give us a call on 01277 525 020 or email drawings and photos.

Common questions from Claygate clients

Is Claygate too far out for you?

No. Places such as Claygate are covered as much as the big towns. Our area covers London and the South East counties. Good photos up front let us bring everything on the first visit.

Can the mastic package for our job in Claygate follow the site programme?

Yes. Send the programme and drawings, and we will plan the mastic to suit the stages. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Do you work to architects’ specifications?

Yes. Send it with your enquiry, and the quote will be based on it, flagging anything that needs clarifying.

Is the mastic package guaranteed?

It’s backed by our 12-month guarantee on the workmanship. Keeping other trades off finished joints prevents most problems.

Will you just go over the old sealant?

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

Does weather affect external mastic work?

External sealing goes ahead only with a dry joint inside the product’s temperature range. Sealing in poor conditions risks adhesion failure, so we wait rather than redo work.

Do you install fire-rated sealant as part of a package?

It can be part of the package where specified. Tell us what records you need and we will confirm with the quote.

How a job runs

We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. For a building around Claygate, tell us how to find it and who will meet us. Send that with the details and we will 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. We seal plot by plot or floor by floor in line with the programme.
  5. Any frame gaps or issues outside our scope are flagged to the site team.
  6. The package is closed out, snags cleared and backed by our 12-month guarantee.

Preparing the site

  • Tell staff and tenants when we’ll be in
  • Explain the parking and delivery arrangements
  • Send your site hours and access windows

Getting a fixed quote

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To start the process, call the office on 01277 525 020 or send photos by email.

Get a price

Related advice

For managing agents and facilities managers

Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Claygate can form part of a wider programme.

Whether you’re a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.

Contractors’ notes for Claygate

Central London is about 33 miles from Claygate. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, so mastic packages have to keep pace with busy programmes. The South East is one of the drier parts of the UK. Even so, frost and condensation on steel and glass are common on winter mornings, so the external programme keeps a little slack.

When units on a site such as Forstal Business Park (2.9 miles north-west of Claygate) are refurbished or reclad, the panel joints and window perimeters are part of the mastic package. On any site in or around Claygate, the mastic follows the specification and the programme.

Claygate is about 7 miles south-west of Maidstone, in Kent. If you’re looking for construction mastic in Claygate, we can help, as we do across Kent. 931 places across Kent fall within our area, Claygate among them. For work in that direction, see our London page (33 miles or so).

We cover the TN12 postcode districts for mastic packages. Streets here include Sheephurst Lane, Maidstone Road and Spenny Lane. Just outside Claygate, we also work in Pearson's Green (1 mile south-west), Marden Beech (2 miles south-east), Marden (2 miles east), Queen Street (2 miles north-west) and Castle Hill (2 miles south-west). A short drive away, we cover Maidstone (7 miles north-east), Sevenoaks (14 miles north-west), Royal Tunbridge Wells (8 miles west), Tonbridge (8 miles west), Kings Hill (7 miles north) and Foley Park (8 miles north-east).

Around Claygate

Recent enquiries here include premises near The White Hart pub. The closest station to Claygate is Marden station, about 1.8 miles east of the centre. A little further out are South East Romany Museum (2.7 miles east).

Map of Claygate © OpenStreetMap contributors

Honest limits

A proper diagnosis includes knowing what sealant can’t do. You will hear from us if the cause turns out to be any of the following:

  • Faulty frames rather than failed sealant
  • Specifying the product where the designer hasn’t
  • Frame gaps too wide for sealant, which the installer needs to correct

If you are not sure, just give us a call on 01277 525 020 or use the quote form and we’ll give you a straight answer before you book.

Surfaces we seal

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

Trusted. Accredited. Insured.