Facade and window perimeter sealing in Bow, Greater London
Facade joint and window perimeter sealing on commercial buildings throughout Bow and nearby, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- New sealant peeling off old mastic
- Weathered joints at frame-to-structure perimeters
- Discoloured or dirty facade joints
Facade sealing across Bow
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Facade sealing for commercial buildings in Bow
Some clients need every window on a block resealed; others need a few leaking frames sorted. Either way, the method is the same: old sealant out, faces cleaned, depth set and a new bead tooled in. A 12-month guarantee applies to our workmanship. If you have gaps between rainscreen or cladding panels and previous reseals run over old sealant, we can help, on stone and brick facade joints, perimeter joints where frames meet the structure and window and door perimeters alike. A single leaking joint is often how a building in Bow first comes to us: we look at the rest while we’re there and tell you what we find.
Every London site, Bow included, is inside the ULEZ, which applies to deliveries and contractors’ vans alike. Add booked delivery slots and limited storage, and a London mastic package needs planning before the first bead.
Every job is signed off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.
- Place
- Bow (E3)
- Region
- Greater London
- Cover
- 12 months on our workmanship
- Quotes
- A fixed quote before we start
- Call
- 01277 525 020
- Updated
- 3 November 2026
How the quote is worked out
What shapes the price:
- Working within restricted access windows
- How accessible the joints are
- Travel to remote or island sites
- Removal of failed or old sealant
There’s no price list, because the scope varies so much from one building to the next. Call for a quote and we will price your job on its own details.
Details that help us quote
Good information means a firmer quote. When you get in touch, include:
- The postcode of the building
- Whether an asbestos survey exists
- Drawings or a marked-up plan, if available
- Any specification or named product
Send us photographs, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.
Why act early in Bow
Failed joints let in more than water: draughts around frames add to heating costs and complaints. A new seal closes the gap for both. In a London building, a failed joint rarely affects only one party: water travels through shared structures, and a small leak becomes a dispute between occupiers. Putting it right early is less disruptive than dealing with the consequences.
No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.
Why choose Mastic Doctor in Bow
- A fixed quote before work starts
- Commercial sealant work since 2005
- Colour options checked against the specified product
- CHAS accredited contractor
Take a look at what affects the cost and our accreditations and insurance.
Questions about Bow
Can you work at a site such as Old Ford Trading Estate, by Bow?
Yes, sites like Old Ford Trading Estate are within our area, along with the rest of Bow. Send details of the unit and the work through our quote form for a quick quote.
Is hospital work, at somewhere like Mile End Hospital, something you do?
Yes. Healthcare sites are among the places we work. Each area is agreed with the ward or department and the estates team in advance.
Do you take on small jobs?
Whatever the size, the process is the same: details, then a fixed price, then sealing, then a 12-month guarantee.
Do you install glazing systems?
No. Glazing, windows and glass replacement aren’t part of our work. We seal the joints around them, including perimeters where frames meet the structure.
Is old mastic on our building likely to contain asbestos?
In older non-domestic buildings, old sealant can contain asbestos. Check the asbestos register or survey before it is disturbed, and if anything is suspected, we stop until it’s tested. We don’t remove asbestos-containing materials.
Do your applicators hold CSCS cards?
Yes. We use CSCS-carded applicators, as many construction sites ask for.
Do you provide access for facade work?
That varies with the building and the access on offer. When you phone 01277 525 020 or email drawings and photos, describe the access, and we’ll agree the approach together.
Doing it in-house
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we will confirm the paperwork you need with the quote.
Diagnose, treat, sign off
Working in a building that stays open takes some planning. We sign and contain the area we are in, with routes through the building left open and work section by section so the rest of the building stays in use. In Bow, most buildings stay in use during the work, so zones and timings are agreed with whoever manages the building. Areas are handed back as each section is finished.
- We start with photos, drawings or a visit to see the joints and agree access.
- Product choice follows the joint’s movement and substrate.
- The existing bead comes out in full and both faces cleaned back.
- Primer is applied where the maker specifies it.
- Backing rod is fitted and the new sealant gunned in and tooled.
- The finished joints are checked with you.
Getting the site ready
- Point out parking and an unloading spot
- For older buildings, check the asbestos register before work
- Tell staff and tenants when we will be in
Getting a fixed quote
A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or give us a call on 01277 525 020 or use the quote form to discuss it first.
Advice
How the job changes by surface
Window and door perimeters
Frame-to-wall joints at windows and doors are the facade joints we reseal most. A low-modulus neutral-cure product, chosen for the frame and wall, goes in finished to throw water off the joint.
Perimeter joints at frames and structure
Perimeter joints at frames often show their age first. We cut them out, prepare both faces and reseal to the specification.
More services for Bow
Common problems we fix in Bow
Cohesive failure, a split through the middle of the bead, points to an over-stretched joint. The joint may be too narrow, the bead too thin or the sealant the wrong movement class.
Site and facilities staff are often the first to spot these:
- Hard, chalky sealant that no longer flexes
- New sealant peeling off old mastic
- Water coming in around window frames
- Sealant pulling away from frames or panels
For a contractor at a hotel such as City View Hotel, which lies north-west of Bow, the mastic often has to be finished before a reopening date.
Before you book anyone
- How joint depth will be controlled
- How long is the guarantee, and what does it include?
- Who will actually carry out the work
- Is the sealant right for the movement and the substrate?
Facade sealing in Bow: the local picture
The ULEZ covers the whole of Greater London, Bow included, so site vehicles need to meet its standards or pay the daily charge. Deliveries are booked and storage is tight, so mastic materials come in as needed. Bow has plenty of hotels close by, all within 2 miles. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades.
For contractors refurbishing units at places like Old Ford Trading Estate, less than half a mile to the north-east of Bow, the mastic covers cladding panels, roller-door and window perimeters. Further education sites such as Onelab College, 0.8 miles south-east of Bow, are extended and refurbished from time to time, with mastic often programmed into the summer break.
Bow is about 1 mile south-east of Hackney, in Greater London. Bow sits inside our coverage and the rest of Greater London, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Bow is one of 764 places in Greater London on our list for facade joints.
Anyone looking for facade sealing in E3 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. We cover commercial and managed buildings on Trellis Square, Sheffield Square and Bromley High Street and the roads nearby. Main routes into Bow include the B142, useful when we plan access and materials. Just outside Bow, we also work in Donnybrook Quarter (1 mile north), Old Ford (1 mile north-east), Mile End (1 mile south), Fish Island (1 mile north) and Bromley-by-Bow (1 mile south-east). Nearby towns on our patch include London (4 miles south-west), City of Westminster (6 miles west), Marylebone (5 miles west), Kensington (8 miles west), St Pancras (4 miles west) and Walthamstow (4 miles north).
What’s near Bow
In Bow, that means premises near Lord Tredegar Public House, Grove Hall Park and Mulberry UTC, among other places. The closest station to Bow is Hackney Wick station, roughly 0.9 miles north of the centre. Nearby you’ll also find V&A East (0.9 miles north-east) and St Clement's Hospital (under half a mile south). Open spaces near Bow include Hollow Pond and Old Ford Island.