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

Facade Sealing contractors in New Charlton

Sealant work in New Charlton for main contractors, managing agents and facilities managers: facade joint and window perimeter sealing on commercial buildings, with a fixed quote first.

  • Draughts around frames and panels
  • Cladding panel joints that have opened up
  • Perimeter joints where frames meet the structure
1
Send details
Photos, drawings or a schedule, or we 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
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Facade sealing for New Charlton sites

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

About our facade sealing in New Charlton

Installing framed glazing systems isn’t part of our work. What we seal are the joints around them: the frame-to-structure perimeter, panel-to-panel joints and window and door surrounds with products suited to facade or glazing perimeter joints. Site teams most often ask us about gaps between rainscreen or cladding panels and weathered joints at frame-to-structure perimeters, across stone and brick facade joints, perimeter joints where frames meet the structure and window and door perimeters. Facilities teams, main contractors and managing agents in New Charlton tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Around New Charlton, as across London, much of the work is refurbishing existing buildings as well as building new ones. Replacement windows, recladding and fit-outs leave perimeter and facade joints to seal, often next to people still using the building.

Whoever the client is, the cover is the same: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we’re upfront about that.

Location
New Charlton (SE7, SE18, E16)
Region
Greater London
Guarantee
A 12-month guarantee
Price
A fixed quote before we start
Call
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

What we’re called out for in New Charlton

Product choice matters: acetoxy-cure silicone may mark stone or corrode certain metals, and an interior product won’t last outdoors. Most external joints call for a neutral-cure, facade-grade sealant.

It’s worth sending us details if you spot any of the following:

  • Draughts around frames and panels
  • Staining on stone next to old sealant
  • Damp patches beside frames after rain
  • Hard, chalky sealant that no longer flexes

Building work at universities like Ravensbourne University London (1.5 miles north-west of New Charlton) is often timed for the summer, mastic included.

Questions to ask before you book

  • Can the work be phased to keep areas open?
  • Whether primer will be used where the manufacturer specifies it
  • Which product they’ll use, and why it suits the joint
  • The terms of the workmanship guarantee

Our contractor checklist

Facade sealing around New Charlton: points for this area

A 2-mile radius around New Charlton takes in a good number of hotels. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up. Site traffic in New Charlton falls within London’s ULEZ, like everywhere else in Greater London. Add booked deliveries and tight storage, and the mastic package needs planning with the site team.

Further education sites such as Shooters Hill Sixth Form College (1.6 miles south-east of New Charlton) are extended and refurbished from time to time, with mastic often programmed into the summer break. Hospital estates such as Queen Elizabeth Hospital, 1.1 miles to the south-east of New Charlton, tend to grow and change in phases, often next to occupied wards, so facade and perimeter sealing has to fit the estates team’s plan.

New Charlton is about 2 miles north-east of Greenwich, in Greater London. Any commercial site in New Charlton is covered, whether it’s a single job or part of a planned programme. New Charlton is one of 764 places in Greater London on our list for facade joints. There’s a separate page for London, roughly 6 miles from New Charlton.

Anyone looking for facade sealing in SE7, SE18 and E16 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. If your site is on Floyd Road, Priolo Road and Hasted Road or close by, we can quote for facade joints. Close to New Charlton, our area also takes in Charlton (1 mile south-east), Westcombe Park (1 mile south-west), Woolwich (1 mile east), Vanbrugh Park Estate (1 mile south-west) and Maze Hill (2 miles south-west). A short drive away, we cover London (6 miles west), City of Westminster (8 miles west), Marylebone (8 miles west), Kensington (10 miles west), St Pancras (7 miles west) and Shoreditch (5 miles north-west).

What’s near New Charlton

Locally, jobs take us to sites close to Thames Barrier Park, Thorntree Primary School and The Victoria pub. There’s a railway station in New Charlton itself: Charlton station. Well-known places in the area include Charlton Athletic Museum (less than half a mile south) and Greenwich Castle (1.9 miles south-west). Not far away are Gilbert's Pit.

Map of New Charlton © OpenStreetMap contributors

Diagnose, treat, sign off

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. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. All of Greater London is in the ULEZ, and kerbside space in New Charlton can be scarce. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.

  1. We look at the joints, the drawings and the access before pricing.
  2. The old bead is cut away completely, not overlaid.
  3. Both faces are cleaned and, where the product needs it, primed.
  4. Closed-cell rod fixes the depth, and the sealant grips two sides only.
  5. The new sealant goes in and is tooled firmly onto both faces.
  6. We walk the finished joints with you before handing over.

Getting the site ready

  • Clear stock, furniture or equipment away from the joints
  • Tell us your opening times and when work is allowed
  • Send asbestos survey details if the building is pre-2000

Getting a fixed quote

Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. To get it moving, give us a call on 01277 525 020 or email a schedule or drawings.

Ask for a quote

Read more

Different surfaces, different methods

Brick and stone facades

On masonry, the sealant has to suit a porous, textured surface. Neutral-cure products are used because acetoxy types can mark some stone, and primers go on where specified.

Precast concrete panels

Precast arrises sometimes crumble or carry old residue. Faces are cleaned to sound concrete, and damaged edges are reported.

Quoting for work in New Charlton

What shapes the price:

  • Location, for remote and island sites
  • Quantities, in metres or numbers
  • Backing rod, priming and other preparation
  • How accessible the joints are

The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a quote.

Before you send an enquiry

There’s no need for a formal survey. These details are enough to start:

  • The type of building and who uses it
  • When you need the work done
  • Specification clauses that apply
  • Rough lengths or quantities, or drawings if you have them

Photos, drawings or a schedule of the joints and a fixed quote comes back to you. If the job needs a look first, we will arrange a site visit.

Commercial clients in New Charlton

FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.

If you look after buildings for someone else, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.

When it isn’t the sealant

We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:

  • Water getting in through cracked render or porous masonry
  • Specialist high-level access methods
  • Render or concrete edges that have broken away

Not sure which it is? You can speak to us on 01277 525 020 or email a schedule or drawings and we’ll tell you honestly before you book.

Surfaces we seal

  • Cladding panel joints
  • Window and door perimeters
  • Coping and flashing joints
  • Stone and brick facade joints
  • Perimeter joints where frames meet the structure
  • Shopfront frames

Your questions answered

Could you schedule work at a campus like Ravensbourne University London for the vacation?

Yes. Education sites normally want the work in vacations or in phases during term, and we plan to suit. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Do you cover business parks and estates near New Charlton, such as Stone Lake Retail Park?

Yes. Our area takes in New Charlton and its surroundings, with estates and business parks such as Stone Lake Retail Park included. Send details of the unit and the work through our quote form for a quick quote.

Does weather matter for sealant work?

It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Internal work is far less affected.

How long before the joints can be used?

Curing time varies by product, and we confirm it on the day, and flag anything to keep off until it has cured.

How do we ask for a quote?

The quote form is the simplest route, though you can also call 01277 525 020 or email the details over. Include photographs or drawings if you have them.

Are you CHAS accredited?

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

Can you fit around our working hours?

Give us your site hours and any access windows in your enquiry, and we’ll schedule the work to suit. Our office runs Monday to Friday, 8am until 5pm.

Accreditations

Trusted. Accredited. Insured.