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

Kingston upon Thames mastic sealing

Mastic sealing for building owners, managing agents and housing associations in Kingston upon Thames and across Greater London. CHAS accredited and fully insured, with a 12-month guarantee.

  • Patchy repairs in mismatched sealant
  • Failed external movement joints
  • Occupiers reporting cold air round windows
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
Constructionline member
£5m public liability

Mastic sealing near Kingston upon Thames

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Common problems we fix in Kingston upon Thames

Sunlight and weather break mastic down over time. The surface chalks, the body stiffens and cracks appear most of all on the sunniest and most exposed elevations.

What tends to prompt an enquiry:

  • Draught complaints from residents or tenants
  • Worn sealant at communal door frames
  • Repeated reactive repairs to the same buildings
  • Open joints in brickwork or panels

For owners of several units at places like Fairfield Trade Park (0.8 miles south-east of Kingston upon Thames), one programme can deal with frame and external mastic across the lot.

Before you book anyone

  • What level of public liability insurance do they hold?
  • Is depth set with backing rod, or bond-breaker tape in shallow joints?
  • How long is the guarantee, and what does it include?
  • Will CSCS-carded applicators be on site?

Our contractor checklist

How we handle mastic sealing in Kingston upon Thames

On a residential block, the work happens around people’s lives. The sequence, the areas and the dates are settled with you, giving you what you need to notify residents. Communal entrances and stairs stay usable while we work. Most enquiries involve brittle perimeter mastic across a building and open joints in brickwork or panels, on external wall and movement joints, shopfronts below residential blocks and balcony and threshold joints. One point of contact handles commercial sealant work in Kingston upon Thames from the first photos to the final walk-round, for single jobs and planned programmes alike.

Across Greater London, Kingston upon Thames included, the ULEZ applies, and parking and loading rules differ from street to street. For block-wide work, a place to park and store materials saves time on every visit.

We sign every job off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.

Where
Kingston upon Thames (KT2, KT1, TW10)
Region
Greater London
Cover
A 12-month guarantee
Price
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

How the job changes by surface

Commercial and mixed-use buildings

Landlords with commercial portfolios have shopfronts, office entrances and external joints to look after. A planned programme suits multi-building portfolios.

Communal areas

Communal entrances, stairwells and corridors have joints at door frames, screens, skirting and floor edges. Tidy, sound joints keep them looking cared for.

Maintenance after handover

After handover, these steps help:

  • Keep bins and bikes away from communal door frames
  • Prioritise elevations facing the weather
  • Have the asbestos survey to hand for older buildings
  • Plan resealing building by building rather than complaint by complaint

Protect entrance and corridor joints from knocks where possible. Damage at low level is the most common reason communal joints fail early.

Left open, joint edges in render, brick or frames can deteriorate. Once that happens, repairs come before resealing and the job grows.

Work for main contractors and building owners

Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.

We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Kingston upon Thames can form part of a wider programme.

When it isn’t the sealant

Honesty saves time and money. New sealant won’t cure:

  • Roof leaks, gutters or failed flashings that aren’t sealant joints
  • Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
  • Glazing that needs replacing

If you are not sure, just phone 01277 525 020 or send photos by email and we will give you a straight answer.

Surfaces we seal

  • Shopfronts below residential blocks
  • Window and door perimeters on blocks
  • Communal entrances and stairwells
  • External wall and movement joints
  • Communal kitchens and washrooms
  • Balcony and threshold joints

Diagnose, treat, sign off

The first thing on site is a walk round with your contact, agreeing which joints are in scope, where to start and what must stay open. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. In Kingston upon Thames, most buildings stay in use during the work, so zones and timings are agreed with whoever manages the building. Areas are handed back as each section is finished.

  1. We inspect each building and record the joints that have failed.
  2. The quote is fixed and split as suits you.
  3. Dates and areas are agreed so occupiers can be told.
  4. Old mastic is removed and the joint faces prepared.
  5. Joints are resealed and tooled.
  6. We check the finished work and confirm the guarantee.

Preparing the site

  • For older buildings, check the asbestos register before work
  • Tell us what induction or permit system the site runs
  • Make sure the joints can be reached

Quotes

Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. For smaller jobs, photographs and a description will do.

Ask for a quote

Related advice

Frames, entrances and external joints in Kingston upon Thames

There are seven care or nursing homes within about 2 miles of Kingston upon Thames. For owners and operators of care buildings, window perimeters and external joints are best renewed in planned phases around residents. In London, mastic work on a block goes through the managing agent or landlord, with notice to residents. We fit the programme to your notice periods.

Student blocks close to universities like Kingston University Knight's Park Campus (0.7 miles south of Kingston upon Thames) are easiest to work on between tenancies. For a school such as St Luke's CofE Primary School, perimeter mastic on windows and doors is a holiday job.

Kingston upon Thames is about 7 miles south-west of Kensington, in Greater London. Our applicators travel to Kingston upon Thames for work on mastic joints. Our Greater London coverage takes in 764 places, large and small. We also cover London, around 11 miles from Kingston upon Thames.

Commercial sites across KT2, KT1 and TW10 are covered for mastic joints. Streets here include Sigrist Square, Old London Road and London Road, and sites on any of them can send details for a fixed quote. You will find Kingston upon Thames on or near the B3365, so getting applicators and materials to site is simple. Close to Kingston upon Thames, our area also takes in Norbiton (1 mile east), Coombe (2 miles east), New Malden (2 miles south-east), Coombe Hill (2 miles north-east) and Motspur Park (2 miles east). Further afield, our area takes in London (11 miles north-east), City of Westminster (9 miles north-east), Marylebone (10 miles north-east), Kensington (7 miles north-east), St Pancras (11 miles north-east) and Shoreditch (12 miles north-east).

Around Kingston upon Thames

Recent enquiries here include premises near Canbury Gardens, The Grey Horse pub and Kingston Grammar School and the streets around them. Kingston upon Thames has its own railway station: Kingston station. Nearby you will also find Eel Pie Island Museum (2.6 miles north-west) and Kingston Hospital (0.7 miles east). The countryside around Kingston upon Thames includes Rose Walk and Kingston Hill Road area.

Map of Kingston upon Thames © OpenStreetMap contributors

Questions about Kingston upon Thames

Do you work in occupied care homes around Kingston upon Thames?

Yes, with the manager deciding the order and timing of rooms. Tell us about any infection-control or safeguarding requirements and we will work to them.

We manage a building near Kingston station. Can you help?

Yes, we work for agents, landlords and housing associations with blocks of every size. Send the address, photographs of the elevations and your access arrangements, and we will give a fixed quote.

Will you just go over the old sealant?

No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.

What if the old mastic contains asbestos?

We don’t remove asbestos-containing materials. If old sealant is suspected, work stops until it’s tested, and the duty to manage asbestos sits with the dutyholder.

Do you cover Kingston upon Thames?

Yes. We take on work across Kingston upon Thames, and the same phone number covers every area.

Can you follow the specification on our project?

Yes. We follow the specification, along with the manufacturer’s installation guidance.

What guarantee do you give on resealing?

Every building we reseal has a 12-month guarantee. It covers our workmanship, not later building movement, damage or frame failures.

Accreditations

Trusted. Accredited. Insured.