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

Commercial Sealant Contractors in East Wickham

Planning work on a sealant joint in East Wickham? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • A top-up bead over failed sealant, now lifting
  • Hardened, chalky sealant on south-facing or exposed elevations
  • Frame sealant that has cracked, shrunk or pulled away
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
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
CHAS & Constructionline
£5m public liability

Commercial sealant contractors for East Wickham sites

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

Commercial sealant contractors for commercial buildings in East Wickham

Pricing a commercial reseal is a short process. Our quote form takes photos, drawings or a schedule of the areas and you can also phone 01277 525 020 or email drawings and photos to talk it through. If the joints need seeing in person, a site visit comes first. We work on external facade joints, kitchen worktops and splashbacks and floor and threshold joints, and what we are called in for most is expansion joints with the sealant torn out and black mould through washroom sealant that won’t clean off. For commercial sealant work in East Wickham, you deal with one contact from quote to sign-off, whether it’s one building or several.

Quotes for commercial sealant in East Wickham can come from photographs and a joint schedule, or from a walk-round, and the scope is set out in writing.

Much of the planning for a London commercial job is about getting in and out: loading bay slots, goods lifts, permits to work and somewhere to keep materials. With access agreed, we work through the sealant joints a section at a time, keeping disruption to tenants low.

Every job we finish is backed by a 12-month workmanship guarantee, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.

Where
East Wickham (DA16, SE18, SE2)
Wider area
Greater London
Guarantee
A 12-month guarantee
Quote
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

For managing agents and facilities managers

Hotels, schools, healthcare sites, offices and retail units book us directly too. The work is planned around how the building runs, so the building keeps working while we do.

FMs need a contractor who is easy to get on site. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.

East Wickham: questions and answers

Does your area include sites such as Gateway Business Centre, near East Wickham?

Yes. Our area takes in East Wickham and its surroundings, with estates and business parks such as Gateway Business Centre included. A few photos and the unit address let us price the work.

Can the sealant on our East Wickham premises match the finishes?

Yes. Colour matching to frames, cladding, stone and shop-fit finishes is a regular part of the work. The quote lists the colours the product is made in.

Do you check for asbestos before removing sealant?

It can, on some older buildings. That’s why we ask for the asbestos information first, and stop if a material is suspect until it’s tested. HSE guidance on asbestos is a useful reference.

Can areas stay open during the work?

Most of the buildings we work in stay occupied. We agree the order of areas, protect what’s nearby and close off only the section we are sealing, until its cure time has passed.

Is East Wickham in your area?

Yes. We take on work across East Wickham, and the same phone number covers every area.

Are you CHAS accredited?

Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.

Does the weather affect the work?

It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.

Commercial sealant contractors around East Wickham: how the place shapes the job

Most London commercial buildings run contractors through a reception, a permit system and booked goods-lift slots. We plan around them and agree phasing so tenants and customers aren’t disrupted. There are two care or nursing homes within about 2 miles of East Wickham. Kitchens and communal rooms in care settings are cleaned constantly, so their joints need to be smooth and sound; colours can be chosen to suit the interior.

East Wickham is inside London’s ULEZ, as is the rest of Greater London; tell us about loading bays, goods lifts and parking when you send details. If you have premises on more than one site, say at Gateway Business Centre and Woolwich Dockyard Industrial Estate, one contractor and one quote can cover both. For tenants and agents on sites such as Gateway Business Centre, 1.7 miles north of East Wickham, office fit-outs, reception joints and window perimeters are the usual sealant work.

East Wickham is about 1 mile north-west of Welling, in Greater London. We cover commercial sites throughout East Wickham, whether it’s a single job or part of a planned programme. We work across 764 places in Greater London, large and small. We also cover London, some 8 miles away.

We take on sealant joints across the DA16, SE18 and SE2 postcode area, whatever the building. Among the streets we cover are Keats Road, Darwin Road and Edison Road, and sites on any of them can send details for a fixed quote. If your building is just outside East Wickham, we cover Falconwood (1 mile south), Shooter's Hill (1 mile west), Blackfen (1 mile south), Plumstead (1 mile north-west) and Avery Hill (1 mile south-west). Bigger towns within reach include London (8 miles west), City of Westminster (11 miles west), Marylebone (11 miles west), Kensington (13 miles west), St Pancras (10 miles north-west) and Shoreditch (8 miles north-west).

Local landmarks in East Wickham

Locally, jobs take us to sites close to Shooters Hill Sixth Form College, Welling School and Shoulder of Mutton Green. East Wickham has its own railway station: Welling station. A little further out are Broadway Shopping Centre (2.3 miles south-east) and Greenwich Castle (4.3 miles west). Not far away are The Tarn and Summer Hill.

Map of East Wickham © OpenStreetMap contributors

Diagnose, treat, sign off

Occupied buildings need a little choreography. We sign and contain the area we are in, with routes through the building left open and work section by section so the rest of the building stays in use. Planning a London job such as one in East Wickham starts with access: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Give us the hours we can be on site and we will schedule to suit.

  1. We start with the evidence: photos, drawings or a look on site.
  2. You get a fixed quote covering removal, preparation and the new sealant.
  3. Sequence, access and working times are settled before the first joint is touched.
  4. The failed sealant comes out and the faces are prepared, with primer where required.
  5. Depth is set with backing, then the sealant is applied, tooled and the area tidied.
  6. Completed areas are signed off with you under our 12-month guarantee.

Before we start on site

  • Flag any permit to work we’ll need
  • Share the asbestos register for older buildings
  • Arrange parking or a loading space

Request a quote

Every quote starts with the facts: the joints involved, quantities, access and the product called for. Send what you have, and we’ll arrange a site visit if anything is unclear.

Get a quick quote

Related advice

What we can’t put right

Part of a good diagnosis is knowing where sealant stops. We’ll tell you if the real problem is any of the following:

  • A dripping trap, valve or pipe behind a fitting
  • Faulty windows rather than failed perimeter sealant
  • Walls or slabs moving more than any sealant can take

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

Surfaces we seal

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

Cost factors for sealant joints

Each job is priced on its own details. The main factors are:

  • Access and working height
  • Distance, for remote addresses
  • Specialist products, such as fire-rated or hygienic sealants
  • Quantities, in metres or numbers

Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.

Before you send an enquiry

However big the job, the same details help:

  • The product your specification calls for
  • The postcode of the building
  • The type of building and who uses it
  • Rough lengths or quantities, or drawings if you have them

For a fixed quote, speak to us 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.

Surface by surface

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.

Fire-rated seals where specified

Where the specification calls for fire-rated or intumescent sealant around service penetrations or linear gaps, we install it to the product’s tested detail. Fire-stopping design and sign-off sit with the designer, fire engineer or building control; we install what’s specified.

After the work

To get the most from the new sealant:

  • Ask cleaners to use a soft cloth and mild cleaner on sealant
  • Add sealant to the planned maintenance inspection list
  • Keep a record of which joints were resealed and when
  • Report cracked or peeling sealant early

We stand behind the workmanship with a 12-month guarantee. File the handover note with the building records, and tell us if a joint we sealed gives trouble within that time.

A failed external joint lets water in every time it rains. Behind a panel or frame, that water can sit unseen for a long time. Resealing early keeps the problem in the sealant and out of the building.

Accreditations

Trusted. Accredited. Insured.