Expansion Joint Sealing in Keston
Expansion and movement joint sealing in walls, decks and floors in Keston and across Greater London. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Rain penetration at brick or block movement joints
- Hardened, cracked sealant on exposed facades
- Layers of sealant in a movement joint
Expansion joint sealing across Keston
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Common questions from Keston clients
Is Glebe Farm Business Park, near Keston, within your area?
Yes, sites like Glebe Farm Business Park are within our area, along with the rest of Keston. To start, just speak to us on 01277 525 020 or email a schedule or drawings with the unit, the joints involved and your access times.
Can you work in a London building with booked loading and goods-lift slots?
Yes, most London buildings have access rules of some kind, and we plan around them. The building manager’s rules go straight into our method.
How do I request a quote?
It works in four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photographs and a postcode.
Can the building stay open while you work?
Yes, with some planning. Tell us your site hours and access windows and we will plan around them.
Can you quote from photos?
It depends on the job. Straightforward work can often be priced from photos and measurements, and bigger or more complex jobs usually get a visit.
What hours do you work?
The office is staffed Monday to Friday, from 8am until 5pm. Tell us your site hours and access windows and the work will be fitted around them.
Will you quote for a small job?
Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.
Expansion joint sealing in Keston, done properly
Floor movement joints in warehouses, retail and public buildings carry wheeled traffic. Without a sound filler, joint edges chip and spall under load so the product has to suit both the traffic and the movement. We’ll tell you if the edges need repairing before sealing and phasing can keep areas working. We work on precast concrete panel joints, blockwork control joints and podiums and floor movement joints, and the failures we’re asked to look at most are weathered movement joint sealant that no longer flexes and previous reseals laid over old sealant. For commercial sealant work in Keston, you deal with one contact from quote to sign-off, whether it’s one building or several.
Floor and movement joints in London take heavy use: car park decks, loading bays, shopping centre malls and podiums over occupied space. When a joint fails, grit and water get in and the arrises start to break up.
Our workmanship is guaranteed for 12 months, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Place
- Keston (BR2)
- Region
- Greater London
- Cover
- 12 months on every job
- Quote
- Quoted before any work starts
- Call
- 01277 525 020
- Updated
- 3 November 2026
Maintenance after handover
Cleaning and maintenance staff play a part too. Pass these on to them:
- Reopen bays and walkways only after the stated cure time
- Clear dirt from joint lines during routine cleaning
- Inspect exposed joints once the cold weather has passed
- Keep product details with the building records for the next reseal
On car parks, winter clearance can damage deck joint sealant. Lifting the blade at each joint avoids tearing the bead and a look at the joints after winter catches any damage.
Rain gets into walls through torn brick and block movement joints. The first sign is often a damp patch indoors by which time the joint has been open for a while. Catching it early keeps the water outside.
Floors, slabs and movement joints in Keston
In London, decks, bays and service yards normally have to keep running, so the work is broken into short sections agreed with the building manager. At least three named trading, business or retail sites lie within about 3 miles of Keston. Their warehouses, yards and car parks are exactly where joints take the most punishment.
Across sites such as Vulcan Way Industrial Estate (1.9 miles south-west of Keston), floor and movement joints can be sealed in phases so units keep working. Like every part of Greater London, Keston is covered by the ULEZ, so vehicle access, loading and parking are planned before the first visit. Parks like Glebe Farm Business Park, 0.8 miles south of Keston, combine paved areas, car parks and building elevations, each with joints that move.
Keston is about 3 miles south of Bromley, in Greater London. Across the BR2 postcode area, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Our Greater London coverage takes in 764 places, from busy centres to rural villages. We also cover London, some 11 miles away.
We cover the BR2 postcode districts. If your site is on Church Road, Greys Park Close and Heathfield Road or close by, we can quote for movement joints. Just outside Keston, we also work in Nash (1 mile west), Farthing Street (1 mile south-east), Locksbottom (1 mile north-east), Leaves Green (2 miles south) and Hayes (2 miles north-west). A short drive away, we cover London (11 miles north-west), City of Westminster (13 miles north-west), Marylebone (13 miles north-west), Kensington (14 miles north-west), St Pancras (13 miles north-west) and Shoreditch (12 miles north).
Near you in Keston
Locally, jobs take us to sites close to South Park, Ravens Wood School and The Greyhound pub. For rail, the closest station is Hayes (Kent) station, about 1.5 miles north-west of the centre. A little further out are Princess Royal University Hospital (1.1 miles east) and Bethlem Museum of the Mind (1.5 miles north). Not far away are West Kent Golf Course nature reserve and Summer Hill.
What sets the cost
Each job is priced on its own details. The main factors are:
- Location, for remote and island sites
- How much there is to seal
- The product specified
- The size and state of each joint
Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote, and you will have a fixed figure to work with.
What we need to price the job
It doesn’t need to be a full survey. A few details are enough to get going:
- The type of building and who uses it
- Your programme or deadline
- The site address and postcode
- Whether an asbestos survey exists
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, phone 01277 525 020 or send details through our quote form.
From enquiry to sign-off
A typical day starts with protection: tape along each joint edge and covers over finishes, stock and equipment close by. The work itself typically takes a few hours to several weeks, depending on how many metres of joint there are and how much old sealant or filler needs removing, and our waste is bagged and taken away as we go. Most London premises stay occupied while we are on site, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.
- Photos, joint lengths and drawings come to us, or we visit.
- We compare each joint’s width with the movement and the sealant’s capability.
- Every joint is cleared of the failed seal and any grit packed into it.
- Edges are checked, and we tell you if any need repairing before sealing.
- The right sealant goes in at the right depth, bonded to the two sides only.
- Each area is handed back after its cure time, under our 12-month guarantee.
What we need from you
- Have the specification and drawings to hand
- Flag any permit to work we’ll need
- Share the asbestos register for older buildings
Get a fixed quote
The quickest route to a quote is a few photos and the site postcode. Send them through the quote form, or speak to us on 01277 525 020 or send details through our quote form if you’d rather talk the job through.
Advice
Why it’s worth doing now in Keston
Closing a car park for a reseal is rarely an option. Work can be planned so parts of the deck stay open, compared with a full closure. We agree phasing with you before work starts. In a London building, a failed joint rarely affects only one party. Putting it right early is less disruptive than dealing with the consequences.
Every site prices differently: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.
Why choose Mastic Doctor in Keston
- Joints cleaned back to sound surfaces
- Constructionline member for supplier checks
- Coloured sealants to suit the setting, where available
- RAL and finish matching where the product range allows
Read what affects the cost and our accreditations.
Owners, agents and contractors
Planned maintenance programmes are welcome: resealing failed joints building by building, on a schedule that suits your budget. Sites in Keston can sit alongside others in a wider programme.
We work for building owners and managing agents on everything from one building to a spread of sites around Keston. Several sites can go on one quote, so there’s one set of paperwork to deal with.
Towns and villages near Keston
More services for Keston
Site staff or a sealant specialist?
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.