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

Mastic contractors in Wennington

We carry out mastic packages for new-build and refurbishment projects in Wennington. Send details for a fixed quote.

  • Inconsistent sealant finishes from plot to plot
  • Perimeter gaps outside the sealant’s range
  • Snag items on joints that need redoing before handover
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Need construction mastic in Wennington?

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

On site: what to expect

We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. Then we strip out anything that has failed, prepare every joint and seal it. Most London premises stay occupied while we’re on site, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.

  1. Drawings, specification and programme come to us.
  2. Quantities are measured and a fixed price returned.
  3. We agree with the site team which areas come first.
  4. Plots or floors are sealed as they’re handed over.
  5. Joints are prepared, backed and sealed to the specification.
  6. After snagging, the work is handed over under our 12-month guarantee.

Getting the site ready

  • Point out parking and an unloading spot
  • Share the asbestos register for older buildings
  • Make sure the joints can be reached

Request a quote

Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call the office on 01277 525 020 or email a schedule or drawings.

Get a price

Advice

Construction mastic in Wennington, done properly

Perimeter sealing outside needs a dry joint and the right temperature. Each sealant has a temperature range, and damp, frost or condensation on frames stops work, so we plan elevations with the forecast and the programme in mind. Internal sealing often fills those days. The enquiries we see most involve existing joints on a refurb that need cutting out and resealing and new external sealant already peeling away, across brick and block movement joints, sanitary and kitchen joints and floor and skirting junctions. Whoever orders the work in Wennington, the brief is usually the same: a clear scope, tidy work and joints that don’t fail again.

Every London site, Wennington included, is inside the ULEZ, which applies to deliveries and contractors’ vans alike. Alongside that, sites normally need booked deliveries and a plan for where materials go.

We stand behind the joints we seal with a 12-month guarantee. That covers our preparation and application, and if something we did falls short, we return to it.

Place
Wennington (RM13)
Wider area
Greater London
Guarantee
A 12-month guarantee
Quotes
Fixed quote, scope in writing
Phone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Surface by surface

Fire-rated sealant where specified

Fire-rated sealant forms part of some packages, installed to the product’s tested detail where it is specified. The design and sign-off of fire stopping sit with the designer, principal designer or fire engineer.

Bathrooms, en suites and washrooms

On multi-unit schemes, consistency matters across hundreds of bathrooms. One applicator team gives the same finish everywhere following the programme.

Aftercare for building managers

A few simple habits keep the new joints working:

  • Don’t schedule sealing before decorators and flooring are done
  • Keep finished joints away from paint, plaster and scrapers
  • Ask installers to correct oversized gaps first
  • Note which sealant went where at handover

If a joint is damaged after sealing, flag it early. We can return to clear snags before handover.

One unsealed frame can let water into finished internal areas. On a new building that means remedial work after decorating, and a delay to handover. Checking perimeters before internal finishes go on avoids it.

When to bring in a specialist

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Redoing a failed joint typically costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.

Building and refurbishing in Wennington

Site traffic in Wennington falls within London’s ULEZ, like everywhere else in Greater London. Deliveries are booked and storage is tight, so mastic materials come in as needed. A number of hotels sit less than 2 miles from Wennington. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades.

On a healthcare site such as St George's Hospital, 2.8 miles to the north of Wennington, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully. School extensions, at buildings such as Brady Primary School, normally run to the summer holidays, mastic included. Work at a hotel such as The Manor Hotel & Restaurant (1.5 miles north of Wennington) tends to be programmed around bookings, mastic included.

Wennington is about 4 miles south of Hornchurch, in Greater London. Any commercial site in Wennington is covered. Across Greater London, 764 places are covered, Wennington among them. There’s a separate page for London, roughly 14 miles from Wennington.

Business premises anywhere in RM13 are within our area for mastic packages. Nearby places we also cover include Aveley (1 mile east), Hacton (2 miles north), South Ockendon (3 miles east), Upminster Bridge (4 miles north) and Hornchurch (4 miles north) for mastic packages. Nearby towns on our patch include London (14 miles west), St Pancras (15 miles west), Shoreditch (13 miles west), Walthamstow (12 miles north-west), Hoxton (13 miles west) and Whitechapel (12 miles west).

Local landmarks in Wennington

Recent enquiries here include premises near Lennard Arms Inn, Wildspace Conservation Park and Harris Academy Rainham and the streets around them. The closest station to Wennington is Rainham (Essex) station, roughly 1.4 miles north-west of the centre. A little further out are St George's Hospital (2.8 miles north) and Erith Museum (2.5 miles south-west). Open spaces near Wennington include Rainham Marshes Nature Reserve.

Map of Wennington © OpenStreetMap contributors

When something else is needed

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

  • Joints damaged after sign-off by following trades
  • Approving fire stopping as compliant
  • Specifying the product where the designer hasn’t

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

What we seal

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

Your questions answered

Could you schedule work at a campus like New City College for the vacation?

Yes. Tell us the term dates, vacation periods and access windows, and we will plan the work around them. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

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. Say when the building is occupied and when it’s quiet, and we will plan accordingly. All of Greater London is inside the ULEZ, and our planning allows for it

How do you deal with asbestos in old sealant?

Asbestos is possible in some older mastics, particularly in buildings from before 2000. We check the asbestos register before cutting out old sealant in an older building, and if asbestos is suspected, work stops until it’s tested. We don’t remove asbestos-containing materials.

Can fire-rated sealing at service penetrations be included?

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

Can you handle several sites?

Yes. Several buildings can share a single quote, and you deal with one contact throughout.

Will you come and look before quoting?

That depends on the size and complexity of the job. Simple work can often be priced from photographs, and bigger or more complex jobs typically get a visit.

What hours do you work?

The office is staffed Monday to Friday, from 8am until 5pm. Let us know your site hours and access windows, and the work will be planned around them.

Commercial clients in Wennington

Hotels, schools, healthcare sites, offices and retail units come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.

For main contractors, we work as the sealant subcontractor. We work to your programme, your specification and your site rules.

Accreditations

Trusted. Accredited. Insured.