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

Sealant specialists in Malden Rushett

Sealant work for offices, shops, hotels and other commercial buildings across Malden Rushett, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Leaks that seem to come through a sealant line
  • Movement joints packed with grit and debris
  • Frame mastic that has hardened and come away from the wall
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
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
Constructionline member
£5m public liability

Commercial sealant contractors for Malden Rushett sites

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

Commercial sealant contractors in Malden Rushett, done properly

Most commercial buildings carry hundreds of metres of sealant that nobody thinks about until it fails, and on a working site that typically surfaces as a leak, a stain or a complaint from occupiers. Mastic Doctor works as a commercial sealant contractor for facilities managers, managing agents and main contractors looking after property in Malden Rushett. We find out why the sealant joints failed, take them out and seal again using a sealant that suits the joint. If you have window and door perimeter joints that have cracked open and expansion joints with the sealant torn out, we can put it right, whatever the surface. Whether you call it commercial sealant work, mastic application or joint sealing, in Malden Rushett it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.

In an occupied building in Malden Rushett, the job is planned so areas stay in use: we agree the order with you and hand back each area with its cure time.

For managing agents and FMs looking after premises in Malden Rushett, access is typically the first question: loading bay slots, goods lifts, permits to work and somewhere to keep materials. Once that’s settled, the sealant joints are resealed in sections so tenants are disturbed as little as possible.

The 12-month guarantee covers our workmanship: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.

The Mastic Doctor team beside their liveried vans in front of an office building
Location
Malden Rushett (KT9)
Wider area
Greater London
Guarantee
A 12-month guarantee
Quote
Fixed quote, scope in writing
Telephone
01277 525 020
Updated
3 November 2026

Should maintenance staff do it?

Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Common problems we fix in Malden Rushett

If only one face has lost its grip, that’s an adhesion failure. The usual causes are poor preparation, a missed primer, contamination on the joint face or sealant bonded to the base of the joint. It’s one of the commonest faults we find on earlier work.

Most enquiries start with one or more of the following:

  • Weathered facade sealant that no longer flexes
  • Frame sealant that has cracked, shrunk or pulled away
  • Sanitary sealant that has gone black and patchy
  • Leaks that seem to come through a sealant line

Offices and shops close to stations such as Chessington South station (to the north of Malden Rushett) tend to be busy all day, so sealant work is planned around opening hours.

Questions to ask before you book

  • Can the work be phased to keep areas open?
  • Whether old or failed sealant will be cut out, not overlaid
  • Is the sealant right for the movement and the substrate?
  • How joint depth will be controlled

Our contractor checklist

Why deal with it now?

Leaving a failed joint rarely saves money. Water past a frame perimeter or a washroom joint can reach plasterboard, insulation, floor coverings and the ceiling below, and the bill then involves other trades. Dealing with it while the damage stops at the bead is the cheaper route. Getting scaffold, permits or access booked in Malden Rushett takes effort, so it makes sense to deal with every failing joint while access is in place.

Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.

Why choose Mastic Doctor in Malden Rushett

  • Colour agreed before work starts
  • Products installed to the manufacturer’s instructions
  • One contact handling all your sites
  • Sealing commercial buildings since 2005

Read how commercial sealant jobs are priced or how we’re accredited.

Your questions answered

Can you work at a site such as Silverglade Business Park, by Malden Rushett?

Yes, sites like Silverglade Business Park are within our area, along with the rest of Malden Rushett. A few photographs and the unit address let us price the work.

Can you work in a London building with booked loading and goods-lift slots?

Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. Say when the building is occupied and when it’s quiet, and we’ll plan accordingly. All of Greater London is inside the ULEZ, and our planning allows for it

How many days will you need on site?

It depends on the scope, though a typical visit typically takes a few hours to several days on most single sites, depending on joint lengths and access. Larger or phased jobs take longer, and we will give you a timescale with the quote.

How long do sealant joints last?

There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.

How do you keep disruption to occupiers down?

It’s mostly about sequence: areas are phased, access windows agreed and enough washrooms or entrances left in use. Let us know what can’t close and we’ll work around it.

Which site documents can you send us?

We confirm documents at quote stage: RAMS, an insurance certificate and CSCS details are the usual requests. Our applicators are CSCS-carded.

Which sealant will you use?

Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.

What we can’t put right

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

  • Broken glass or blown double-glazed units
  • Walls or slabs moving more than any sealant can take
  • Leaking roofs, gutters or flat-roof membranes (those need a roofer)

Not sure which it is? You can ring 01277 525 020 or email drawings and photos and we’ll tell you honestly before you book.

Where we work in Malden Rushett

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

From enquiry to sign-off

Where the site stays busy, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed before the next one starts. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.

  1. You send photos, drawings or a list of the joints and areas involved.
  2. Next comes a diagnosis and a fixed quote.
  3. Before anything is cut out, we agree access, timings and sequence.
  4. We strip the failed bead and prepare both faces of the joint.
  5. We fit backing to the right depth, prime where specified and lay the new bead.
  6. Finished joints are checked with you and handed over with our 12-month guarantee.

Before we start on site

  • Arrange parking or a loading space
  • Let building users know which areas are affected
  • Tell us which areas need to stay in use

Get a fixed quote

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

Get a quick quote

Advice

Different surfaces, different methods

Window and door perimeters

The perimeter joint between a frame and the structure keeps rain out of the reveal. Failed perimeters are cut out and cleaned, backing goes into deeper gaps, and the joint is resealed with a low-modulus neutral-cure silicone or another suitable product.

Commercial kitchens and tea points

Kitchen joints along worktops, sinks, splashbacks and wall cladding collect grease and moisture. They’re degreased thoroughly before resealing.

Frontages, fit-outs and joints in Malden Rushett

The 3 miles around Malden Rushett take in at least three named trading estates, business parks or retail parks. Each new occupier on a park like these tends to refit, from reception to staff kitchen. Contractor rules in London buildings can be strict, with inductions, permits and timed loading all normal. We fit into those systems and phase the work so the building keeps operating.

Occupiers with premises at both Silverglade Business Park and Barwell Business Park could have the sealant at each handled under one quote. In hotels such as Chessington Azteca Hotel, which lies north of Malden Rushett, refurbishments normally mean bathroom, bar and reception joints where a matched sealant colour has to sit with the finishes.

Malden Rushett is about 2 miles north of Ashtead, in Greater London. We send applicators to Malden Rushett for sealant joints, handled exactly as we handle every other area. Across Greater London, 764 places are covered, Malden Rushett among them. We also cover London, some 15 miles away.

We cover the KT9 postcode districts for sealant joints. Buildings on Silverglade, Leatherhead Road and West Road are within our area for sealant joints. Just outside Malden Rushett, we also work in Barwell (1 mile north), Pachesham Park (1 mile south-west), Claygate (2 miles north-west), Oxshott (2 miles west) and Ashtead (2 miles south). Bigger towns within reach include London (15 miles north-east), City of Westminster (14 miles north-east), Marylebone (14 miles north-east), Kensington (12 miles north-east), Brompton (13 miles north-east) and Stockwell (12 miles north-east).

Near you in Malden Rushett

Recent enquiries here include premises near Claygate Common, among other places. The nearest railway station is Chessington South station, about 1.3 miles north. A little further out are Epsom Cottage Hospital (0.8 miles east) and The Ashley Centre (2.2 miles east). The countryside around Malden Rushett includes The Lake and Jubilee Wood.

Map of Malden Rushett © OpenStreetMap contributors
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