Mastic Sealing in St Luke's
Mastic sealing for building owners, managing agents and housing associations across St Luke's, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Open joints in brickwork or panels
- No planned programme for sealant
- Old repairs sealed over failed mastic
Need mastic sealing in St Luke's?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
How the job changes by surface
Estate-wide resealing programmes
A programme can start with the worst buildings and work down. Quotes can be per block or for the full programme.
Commercial and mixed-use buildings
Tenants in commercial buildings need to keep trading, so we plan around them.
About our mastic sealing in St Luke's
Older blocks and commercial buildings can have mastic that contains asbestos. We check the asbestos register or survey before any old sealant is cut out, and work stops for testing if there’s any doubt. Removing asbestos-containing material isn’t something we do. We work on window and door perimeters on blocks, communal entrances and stairwells and shopfronts below residential blocks, and the failures we’re asked to look at most are brittle perimeter mastic across a building and repeated reactive repairs to the same buildings. Looking for mastic applicators who cover St Luke's? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.
London has a large stock of purpose-built blocks, mansion flats and converted buildings managed by agents and housing associations. Mastic around windows, doors and balconies tends to fail across a whole block at a similar time.
We sign every job off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.
- Location
- St Luke's (N1, EC1V, EC2A)
- Wider area
- Greater London
- Cover
- 12 months on our workmanship
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
When to call us in St Luke's
Occasionally the substrate fails, not the sealant for instance where render or brick edges crumble. We’ll tell you if the joint edges need repairing before resealing.
Clients normally get in touch after noticing something like this:
- A mix of products and colours from past repairs
- Failed external movement joints
- Repeated reactive repairs to the same buildings
- Draught complaints from residents or tenants
Landlords with units on estates such as Southwark Bridge Business Centre (to the south of St Luke's) can bring frame, door and external mastic across several units into one programme.
Before you book anyone
- Their plan for phasing and protecting the area
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- The named product and why it was chosen
- Proof of insurance
Mastic sealing in St Luke's: the local picture
In London, mastic work on a block goes through the managing agent or landlord, with notice to residents. We work to your notice and access plan. There are six care or nursing homes within about 2 miles of St Luke's. Frame mastic on care buildings is best renewed elevation by elevation, with the manager deciding timings.
If your remit includes a building such as St Luke's CofE Primary School, frame and door mastic can be programmed for the holidays. Trustees of buildings like Jewin Welsh Presbyterian Chapel can bring frame and external mastic into a planned maintenance list.
St Luke's is about 2 miles north of London, in Greater London. Looking for mastic sealing in St Luke's? We can help, as we do across Greater London. Our Greater London coverage takes in 764 places, from busy centres to rural villages.
Anyone looking for mastic sealing in N1, EC1V and EC2A gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. If your site is on Long Lane, City Road and Moor Lane or close by, send details and we will quote for mastic joints. St Luke's sits on or close to the A1 and A501, useful when we plan access and materials. Just outside St Luke's, we also work in Finsbury (1 mile south), Barbican Estate (1 mile south), Shoreditch (1 mile east), Hoxton (1 mile north-east) and City of London (1 mile south). Further afield, our area takes in City of Westminster (3 miles west), Kensington (5 miles west), Walthamstow (5 miles north-east), Hampstead (4 miles north-west), Ruislip (14 miles west) and Brompton (4 miles south-west).
Local landmarks in St Luke's
In St Luke's, that means premises near Barts Health Archives, Charterhouse Square School and The Masque Haunt pub, among other places. Also close by are St Mary-at-Hill (1.1 miles south), Central Foundation Boys' School (less than half a mile east) and Artillery Ground (less than half a mile south-east). There’s a railway station in St Luke's itself: Old Street station. Nearby you’ll also find Gabriel's Wharf (1.3 miles south-west) and Montfichet's Tower (0.9 miles south-west). Not far away are St. James's Park Lake and Barnsbury Wood.
On site: what to expect
Site rules come first: sign-in, induction and whatever permit system the building uses. Once we’re cleared to begin, we take the joints in the sequence agreed with you. In St Luke's, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Phased work keeps the rest of the building in use.
- We inspect each building and record the joints that have failed.
- You get a fixed quote, per block or for the whole programme.
- We agree the programme and dates with you.
- Old mastic is removed and the joint faces prepared.
- New sealant goes in with backing rod and primer where needed.
- Each building is checked and signed off with the 12-month guarantee.
What we need from you
- Make sure the joints can be reached
- Tell us which areas need to stay in use
- Point out parking and an unloading spot
Quotes
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 send details through our quote form if you’d rather talk the job through.
Advice
For managing agents and facilities managers
Hotels, schools, healthcare sites, offices and retail units come to us directly as well. The work is planned around how the building runs, so the building keeps working while we do.
We work for building owners and managing agents on everything from one building to a spread of sites. One quote can cover more than one site, which keeps the paperwork simple.
Cost factors for mastic joints
There’s no standard rate for sealant work, since sites vary so much. What we take into account:
- How accessible the joints are
- Working within restricted access windows
- Site requirements such as inductions and permits
- Removal of failed or old sealant
A quote for mastic joints depends on how many there are, their condition and the access, plus any specification you are working to. Call for a quote.
Before you send an enquiry
Diagnosis starts before we arrive. Tell us:
- The product your specification calls for
- The type of building and who uses it
- How the joints are reached, and at what height
- Rough lengths or quantities, or drawings if you have them
Need a figure for a tender or a budget? Send the scope and any drawings, and we will return a fixed quote that you can work with. For a chat about it beforehand, ring 01277 525 020 or use the quote form.
Towns and villages near St Luke's
Also in St Luke's
Common questions from St Luke's clients
Can you work in a care home near St Luke's with residents in?
Yes, with the manager deciding the order and timing of rooms. Tell us about any infection-control or safeguarding requirements and we’ll work to them.
Will you take on a block within reach of Old Street station?
Yes, and several blocks can go on one quote. Photos of each elevation help us quote accurately.
Can you work to our specification?
Yes. Send it with your enquiry, and the quote will be based on it, flagging anything that needs clarifying.
Can you take on resealing for a block portfolio?
Yes, block and estate work is a core part of what we do. We work through buildings in a planned order with dates agreed in advance.
Do you work in St Luke's?
Yes. St Luke's falls within our area, and you can call 01277 525 020 or email drawings and photos to get started.
Is asbestos a concern with old mastic?
Some mastics in pre-2000 buildings contain asbestos. We check the asbestos register or survey before disturbing it and suspect material is tested first.
When can the area be used after sealing?
We will confirm how long the chosen product needs to cure, and sign any area that should be left alone.
Site staff or a sealant specialist?
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.
For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.