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

Deptford facade sealing

Looking for facade sealing in Deptford? It’s simple: send details, get a quote, we seal, guaranteed.

  • Leaks at window and door perimeters
  • Hard, chalky sealant that no longer flexes
  • Sealant pulling away from frames or panels
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
London, the South East & Scotland
CHAS & Constructionline
£5m PL insurance

Need facade sealing in Deptford?

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Facade sealing for commercial buildings in Deptford

Some clients need every window on a block resealed; others need a few leaking frames sorted. The approach doesn’t change with the size: cut out, clean, back, prime where needed and seal. A 12-month guarantee applies to our workmanship. Most enquiries involve failed seals around shopfront and entrance frames and new sealant peeling off old mastic, on stone and brick facade joints, shopfront frames and perimeter joints where frames meet the structure. Whoever orders the work in Deptford, the brief is normally the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

The ULEZ covers the whole of Greater London, so contractors’ vehicles on a job in Deptford must meet its standards or pay the daily charge. Add booked delivery slots and limited storage, and a London mastic package needs planning before the first bead.

We stand behind the joints we seal: 12 months, guaranteed. It covers how we prepared and applied the sealant, and if something we did falls short, we return to it.

Where
Deptford (SE8, SE10, SE14)
Region
Greater London
Guarantee
12 months on every job
Price
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

Perimeter joints at frames and structure

These frame-to-structure joints take a lot of movement and weather. They are cut out, cleaned, backed and resealed with a product suited to glazing perimeters.

Coping and flashing joints

Not every coping or flashing leak is a sealant problem. We tell you if the fix is a roofing or metalwork job rather than a reseal.

Contractors’ notes for Deptford

Site traffic in Deptford falls within London’s ULEZ, like everywhere else in Greater London. London sites also mean booked deliveries and limited storage, which the mastic programme has to allow for. The area within 2 miles of Deptford holds a good number of hotels. Hotel extensions and refits usually have to fit around bookings, so mastic dates are tight.

For contractors on a campus like University of Greenwich - Greenwich Campus, 0.9 miles east of Deptford, facade and perimeter sealing has to fit around students and term dates. For contractors at a college like Bellerbys College London, under half a mile to the north-east of Deptford, perimeters and internal sealant are timed for the holidays. Work at a hotel such as King William Hotel (to the east of Deptford) tends to be programmed around bookings, mastic included.

Deptford is about 3 miles south-east of Whitechapel, in Greater London. We cover commercial sites throughout Deptford, whether it’s a single job or part of a planned programme. Deptford is one of 764 places in Greater London on our list for facade joints.

If you need facade sealing in SE8, SE10 and SE14, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Among the streets we cover are Mill Lane, Dixon Road and Clare Road. Deptford sits on or close to the A2209. We also cover New Cross (1 mile south-west), St Johns (1 mile south), Millwall (1 mile north), Isle of Dogs (1 mile north-east) and North Greenwich (1 mile north-east). A short drive away, we cover London (3 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (8 miles west), St Pancras (5 miles north-west) and Shoreditch (4 miles north-west).

What’s near Deptford

Around Deptford, our work takes us to commercial buildings near Addey and Stanhope School, Sue Godfrey Nature Park and Deptford Arms, among other places. There’s a railway station in Deptford itself: Deptford station. Well-known places in the area include Greenwich Castle (1.1 miles east) and Lewisham Shopping Centre (1.3 miles south-east). Green spaces nearby include Sue Godfrey Nature Park and Tower Hill.

Map of Deptford © OpenStreetMap contributors

After the work

Cleaning and maintenance staff play a part too. Share these points with them:

  • Brief window cleaners about newly sealed joints
  • Plan facade sealing alongside redecoration
  • Investigate damp beside windows promptly
  • Keep the sealant details on the building file

After heavy weather, check vulnerable elevations for signs of water inside. Catching a new leak early keeps the repair small.

Check older buildings for asbestos before disturbing old mastic. Some older mastics contain it.

How a job runs

Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. All of Greater London is in the ULEZ, and kerbside space in Deptford can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.

  1. Access, site rules and timing are settled with the client up front.
  2. We only seal when joints are dry and within the product’s temperature range.
  3. Each joint is cut out and the edges inspected.
  4. Joints are cleaned, primed if required and fitted with backing rod.
  5. Facade-grade sealant goes in and is tooled to a tidy concave profile.
  6. Once signed off, the work carries our 12-month guarantee.

What we need from you

  • Explain the parking and delivery arrangements
  • Point out any areas we must not close
  • Have the specification and drawings to hand

Ask for a 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 the details over.

Get a price

Related advice

When to bring in a specialist

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.

A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

Honest limits

A proper diagnosis includes knowing what sealant can’t do. We will tell you if the real problem is one of these:

  • Providing access systems for the work
  • Movement beyond what any sealant can handle
  • Replacing glass or failed glazing units

If you’re not sure, just call 01277 525 020 or email us and we will give you a straight answer.

What we seal

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

What sets the cost

There’s no standard rate for sealant work, because every site is different. What we look at:

  • The site’s rules and procedures
  • Backing rod, priming and other preparation
  • Distance, for remote addresses
  • How much there is to seal

The product called for affects the cost, as does the preparation each joint needs. Access, phasing and site rules also count.

What we need to price the job

To price the job accurately, we need a clear picture of the site. Send us:

  • Drawings or a marked-up plan, if available
  • Access details, including height
  • The postcode of the building
  • Any specification or named product

Pricing a project or setting a maintenance budget? We will quote against your scope and drawings that you can work with. For a chat about it beforehand, phone 01277 525 020 or email the details over.

Deptford: questions and answers

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. Share the building’s contractor rules and we’ll work to them. We allow for the ULEZ, which covers every borough

Could you schedule work at a campus like University of Greenwich - Greenwich Campus for the vacation?

Yes. Tell us the term dates, vacation periods and access windows, and we’ll plan the work around them. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Can weather delay the job?

It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.

Do you provide access for facade work?

We agree access with the client at the start. Tell us about access: existing scaffold, what you are arranging and any site restrictions, and the quote will reflect it.

When is resealing likely to be due?

Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.

Can the sealant be colour-matched?

It depends on the product. Some ranges offer many colours, others very few, so we will confirm the colours available for the specified product with the quote.

Is old mastic on our building likely to contain asbestos?

Some older mastics, especially in pre-2000 buildings, can contain asbestos. Check the asbestos register or survey before it is disturbed. We don’t remove asbestos-containing materials.

Accreditations

Trusted. Accredited. Insured.