Facade and window perimeter sealing in Plumstead, Greater London
Facade joint and window perimeter sealing on commercial buildings in Plumstead and across Greater London. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Draughts around frames and panels
- Failed sealant on precast panel joints
- Failed seals around shopfront and entrance frames
Facade sealing across Plumstead
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
How the quote is worked out
To price the job, we consider:
- Quantities, in metres or numbers
- Whether old sealant has to be cut out first
- The product specified
- Travel to remote or island sites
Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a fixed quote.
Sending details for a quote
A good diagnosis starts with the right details. Tell us:
- Access details, including height
- The site address and postcode
- Specification clauses that apply
- A wide shot and a close-up of the area
Let us know the site, the scope and your timescale, and a fixed quote will follow. The easiest way is to phone 01277 525 020 or send details through our quote form.
Facade sealing for commercial buildings in Plumstead
A good facade joint depends on design as much as product. Joint width needs to match how far the joint moves and how far the sealant can stretch, and closed-cell rod sets the depth, keeping the bond to two faces with the ratio the sealant maker recommends, often around 2:1. We work on coping and flashing joints, window and door perimeters and shopfront frames, and the failures we are asked to look at most are facade joints cracked through the middle and old perimeter mastic that has dried out. Most enquiries from Plumstead start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Building sites in London tend to be tight: small compounds, delivery slots and shared hoists and scaffold. Mastic is normally one of the last trades on each elevation or floor, so we keep to the programme and the order of trades the site sets.
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
- Plumstead (SE18, SE28, E16)
- Wider area
- Greater London
- Cover
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Places near Plumstead
Other services in Plumstead
When to bring in a specialist
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
Plumstead: questions and answers
Can you cope with the access rules in a London building?
Yes, we plan every London job around the building’s own access rules. Share the building’s contractor rules and we will work to them. The ULEZ covers the whole of Greater London, which we allow for
Can you work at a site such as Gateway Business Centre, by Plumstead?
Yes. Our area takes in Plumstead and its surroundings, with estates and business parks such as Gateway Business Centre included. Send details of the unit and the work through our quote form for a quick quote.
How is access to upper-level joints handled?
That comes down to the access arranged for the job. Share what access exists or is planned when you send details, and we’ll agree the approach together.
Is old mastic on our building likely to contain asbestos?
For older buildings, yes, check before work starts. The duty to manage asbestos sits with the dutyholder. If asbestos is suspected, work stops until it is tested.
Do you have public liability insurance?
Yes. We’re fully insured, and the certificate can go with your quote.
Can you work in cold or wet weather?
Year-round work is possible as long as joints are dry and temperatures suit the product. Frost and condensation on glass and steel are common on winter mornings, so we plan around the forecast.
Which sealant do you use on facades?
Most facade and window perimeter joints take a low-modulus neutral-cure silicone. Hybrid or MS polymer, polyurethane and polysulphide sealants suit others, as the specification or substrate requires.
What we can’t put right
Before quoting, we check that sealant is the right answer. It won’t put right:
- Cracked or spalling substrates that need repair before sealing
- Work on the window or framing system itself
- Arranging specialist high-level access, which is planned with the client
If you’re not sure, just ring 01277 525 020 or email the details over and we’ll give you a straight answer.
Where we work in Plumstead
- Shopfront frames
- Window and door perimeters
- Stone and brick facade joints
- Coping and flashing joints
- Perimeter joints where frames meet the structure
- Cladding panel joints
Mastic packages on Plumstead sites
Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Plumstead. Deliveries are booked and storage is tight, so mastic materials come in as needed. A 2-mile radius around Plumstead takes in a number of hotels. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades.
For contractors on a campus like University of East London, 1.6 miles north-west of Plumstead, facade and perimeter sealing has to fit around students and term dates. Projects at colleges like Shooters Hill Sixth Form College, 1.1 miles to the south-west of Plumstead, tend to run to term dates, so the mastic is planned tightly.
Plumstead is about 8 miles east of London, in Greater London. We cover commercial sites throughout Plumstead, whether it’s a single job or part of a planned programme. Plumstead is one of 764 places we cover in Greater London. There’s a separate page for London, roughly 8 miles from Plumstead.
We take on facade joints across the SE18, SE28 and E16 postcode area. For a building on Moy Lane, Love Lane and Tuam Road or nearby, we can quote for facade joints. Being close to the A206, Plumstead is easy to get to with materials and equipment. If your building is just outside Plumstead, we cover Woolwich (1 mile west), Shooter's Hill (1 mile south-west), East Wickham (1 mile south-east), Charlton (2 miles west) and New Charlton (2 miles west). A short drive away, we cover London (8 miles west), City of Westminster (10 miles west), Marylebone (10 miles west), Kensington (12 miles west), St Pancras (9 miles west) and Shoreditch (7 miles west).
Landmarks near Plumstead
Around Plumstead, our work takes us to commercial buildings near Shooters Hill Sixth Form College, Plumstead Manor School and Plumstead Common and the streets around them. Plumstead has its own railway station: Plumstead station. Other landmarks nearby include British Hospital for Mothers and Babies (1.3 miles west) and Greenwich Castle (3.6 miles west). Not far away are Gilbert's Pit.
After the work
Once the work is signed off, a little attention goes a long way:
- Avoid patch repairs on failed facade joints
- Check that rainwater leaves the facade the way it was designed to
- Inspect facade joints on a regular cycle
- Check the asbestos register before old mastic is disturbed
Include facade joints in your planned maintenance inspections. Watch for splits, gaps at the edges, hardening and discolouration.
Get the joint design right when resealing: correct depth, proper backing and a sealant that can take the movement. A well-designed joint lasts longer than a like-for-like copy of a failed one.
Our process
We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. All of Greater London is in the ULEZ, and kerbside space in Plumstead can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.
- First we review photographs, drawings or what we saw on a visit, and agree how each joint will be reached.
- The old bead is cut away completely, not overlaid.
- Both faces are cleaned and, where the product needs it, primed.
- Closed-cell rod fixes the depth, and the sealant grips two sides only.
- The new sealant goes in and is tooled firmly onto both faces.
- The completed runs are checked with you, then the 12-month guarantee applies.
Before we start on site
- Send your site hours and access windows
- Send any specification or drawings in advance
- Arrange parking or a loading space
Getting a fixed quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price against exactly what is specified. For smaller jobs, photos and a description will do.
Related advice
When to call us in Plumstead
A frequent fault is a bead stuck to the joint’s rear face as well as its sides. Without rod or bond-breaker tape, the bead is held back and rips when the facade moves.
Any of the following is a good reason to get the joints checked over:
- Weathered facade joints that have lost their grip
- Failed seals around shopfront and entrance frames
- Sealant pulling away from frames or panels
- Discoloured or dirty facade joints
Work at a hotel such as Gallions Hotel (to the north of Plumstead) tends to be programmed around bookings, mastic included.
Questions to ask before you book
- Are they CHAS accredited or on Constructionline?
- Will RAMS and insurance details be available?
- Do they follow the manufacturer’s priming guidance?
- Their approach to joint depth and backing