Mastic Sealing in Deptford
Our CSCS-carded applicators take on mastic sealing for building owners, managing agents and housing associations in Deptford. Send details for a fixed quote.
- A mix of products and colours from past repairs
- Water getting in round frames after rain
- Failed external movement joints
Mastic sealing near Deptford
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Mastic sealing in Deptford
In buildings from before 2000, some old mastics contain asbestos. Before we disturb it, we ask to see the asbestos register or survey, and work stops for testing if there’s any doubt. We don’t remove asbestos-containing materials. If you have old repairs sealed over failed mastic and communal area joints that look neglected, we can help, on shopfronts below residential blocks, balcony and threshold joints and communal entrances and stairwells alike. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Deptford, that means joint design, primers and backing rod as standard.
London’s ULEZ covers every borough, and parking and loading rules vary street by street. For a block or estate, it helps to know where we can park and stage materials.
We sign every job off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.
- Location
- Deptford (SE8, SE10, SE14)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Price
- A fixed quote before we start
- Call
- 01277 525 020
- Page updated
- 3 November 2026
For managing agents and facilities managers
Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, with each stage agreed with your site contact.
Whether you are a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.
Why act early in Deptford
Reacting to every complaint means sending someone out block by block. A planned programme treats each building once and is simpler to manage and budget. In a London building, a failed joint rarely affects only one party. Putting it right early is less disruptive than dealing with the consequences.
Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.
Why appoint us
- RAL and finish matching where the product range allows
- Fully insured, including public liability cover
- Colour agreed before work starts
- Products installed to the manufacturer’s instructions
See how commercial sealant jobs are priced and how we’re accredited.
Should maintenance staff do it?
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
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.
From enquiry to sign-off
Site rules come first: sign-in, induction and whatever permit system the building uses. With the paperwork done, the joints are worked through in the order agreed with your site contact, and each area is checked before we leave it. All of Greater London is in the ULEZ, and kerbside space in Deptford can be scarce. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- First we look at the mastic on each building and note what needs replacing.
- A fixed quote follows, split by block or building if that suits you.
- Dates, areas and access are agreed so residents or tenants can be told in advance.
- Old sealant is stripped and each face prepared back to firm material.
- Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
- Each building is checked on completion and the work carries our 12-month guarantee.
What we need from you
- Make sure the joints can be reached
- Agree which areas must stay open
- Share the asbestos register for older buildings
Getting a fixed quote
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, phone 01277 525 020 or send photos by email.
Advice
Mastic sealing in Deptford: the local picture
Deptford has four care or nursing homes no more than 2 miles away. Care home owners need frame and external mastic kept sound without unsettling residents. London blocks come with residents to inform, access to agree and often a concierge or estate office to work with. We work to your notice and access plan.
If you manage student housing near a university such as University of Greenwich - Greenwich Campus, 0.9 miles to the east of Deptford, the summer turnaround is the time for mastic. Site managers at schools like Tidemill Academy can fit frame mastic into the summer works. Trustees of buildings like St. Paul's can bring frame and external mastic into a planned maintenance list.
Deptford is about 3 miles south-east of Whitechapel, in Greater London. Any commercial site in Deptford is covered, for single jobs and planned programmes alike. Across Greater London, 764 places are covered, Deptford among them.
Work on mastic joints is covered throughout SE8, SE10 and SE14. Buildings on Mill Lane, Dixon Road and Clare Road are within our area for mastic joints. Access to Deptford is via the A2209. Close to Deptford, our area also takes in 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
We work on buildings around Addey and Stanhope School, Sue Godfrey Nature Park and Deptford Arms, among other places. There’s a railway station in Deptford itself: Deptford station. A little further out are Greenwich Castle (1.1 miles east) and Lewisham Shopping Centre (1.3 miles south-east). The countryside around Deptford includes Sue Godfrey Nature Park and Tower Hill.
Deptford: questions and answers
We manage a building near Deptford station. Can you help?
Yes, and several blocks can go on one quote. Send the address, photos of the elevations and your access arrangements, and we’ll give a fixed quote.
Can you work at a site such as Brookmarsh Industrial Estate, by Deptford?
Yes. Our area takes in Deptford and its surroundings, with estates and business parks such as Brookmarsh Industrial Estate included. A few photographs and the unit address let us price the work.
When is resealing likely to be due?
It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.
How do you handle work on occupied blocks?
Residents and tenants carry on as normal. We flag any areas that need internal access well before the dates so you can arrange it with occupiers.
Will you just go over the old sealant?
No, never. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
Does the weather affect the work?
It can, for external work. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.
How do you choose the sealant?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
Places near Deptford
Other services in Deptford
Cost factors for mastic joints
The price varies from site to site. It mainly depends on:
- Specialist products, such as fire-rated or hygienic sealants
- The site’s rules and procedures
- Phasing around occupants
- Location, for remote and island sites
There’s no price list, because the scope varies so much from one building to the next. For a fixed figure, call for a quote and we will price your job on its own details.
Sending details for a quote
The more we know, the firmer the quote. When you get in touch, include:
- The product your specification calls for
- How the joints are reached, and at what height
- Your programme or deadline
- The postcode of the building
Send us photographs, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.
What the job involves on each surface
Planned maintenance
Resealing can be scheduled alongside other planned works on a timetable you set.
Window and door perimeters on blocks
Frames vary from uPVC to aluminium and timber, so the grade we pick has to bond to frame and wall alike. We’ll confirm the colours available for the specified product.