Mastic sealing for building owners and managing agents in Smithfield, City of London
Looking for mastic sealing in Smithfield? It’s simple: send details, get a quote, we seal, guaranteed.
- Mastic failing across several blocks on an estate
- Cracked, hardened mastic round windows on a block
- Movement joints with sealant missing
Mastic sealing for businesses in Smithfield
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Commercial clients in Smithfield
Building owners and managing agents use us on sealant work across single buildings or whole portfolios. One quote can cover more than one site, so there’s one set of paperwork to deal with.
If you look after buildings for someone else, you need clear quotes and clear reporting. You get a fixed quote, an agreed scope and a walk round at the end.
How we handle mastic sealing in Smithfield
Before work starts, most agents and landlords want the documents in order. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We’re a Constructionline member and CHAS accredited, and we carry public liability insurance. Most enquiries involve mastic failing across several blocks on an estate and open joints in brickwork or panels, on balcony and threshold joints, external wall and movement joints and communal entrances and stairwells. For commercial sealant work in Smithfield, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.
Planning mastic work on a London block means notices to residents, access to flats and agreed working areas. Work is planned with the agent so residents get notice and access is arranged in advance.
The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we’re clear about what is covered before work starts.
- Location
- Smithfield (EC1V, EC1P, EC1R)
- Region
- City of London
- Guarantee
- A 12-month guarantee
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
When it isn’t the sealant
We check first that sealant really is the fix. It won’t put right:
- Substrate edges that need repairing first
- Leaks from above rather than through a joint
- Materials that need asbestos testing before work
If you are not sure, just call 01277 525 020 or email the details over and we’ll give you a straight answer.
What we seal
- Shopfronts below residential blocks
- Balcony and threshold joints
- External wall and movement joints
- Communal kitchens and washrooms
- Window and door perimeters on blocks
- Communal entrances and stairwells
Looking after the joints
Once the work is signed off, a little attention goes a long way:
- Plan resealing building by building rather than complaint by complaint
- Check sealant joints during planned building inspections
- Track which buildings were done and when
- Have the asbestos survey to hand for older buildings
Ask residents or tenants to report draughts or leaks round windows early. Early reports catch failures before damage spreads.
The longer failed joints are left, the more likely the substrate edges break up. Then the edges may need repairing first.
Your questions answered
Can you work in a care home near Smithfield with residents in?
Yes. We agree rooms and times with the manager and work a few areas at a time. Any site rules, from signing in to infection control, are agreed before we start.
Is Grand Vitesse Industrial Estate, near Smithfield, within your area?
Yes. We cover Smithfield and the area around it, including industrial estates, business parks and retail parks such as Grand Vitesse Industrial Estate. Send details of the unit and the work through our quote form for a quick quote.
How long before the joints can be used?
Curing time varies by product, and we confirm it on the day, and flag anything to keep off until it has cured.
Do you seal on top of existing sealant?
No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.
Can you take on resealing for a block portfolio?
Yes, that’s exactly who this service is for. We work through buildings in a planned order with dates agreed in advance.
What paperwork can you provide?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We hold CHAS accreditation and Constructionline membership.
How long does a typical visit take?
The duration is planned around your programme and the access we are given. You will have an expected duration with the quote.
What sets the cost
A fixed quote reflects the actual work. It allows for:
- Quantities, in metres or numbers
- How accessible the joints are
- Phasing around occupants
- The size and state of each joint
The specified product makes a difference, and so does the preparation. Access, phasing and site requirements come into it too.
Sending details for a quote
A few photos plus some basic facts will normally do. It helps to include:
- Clear photographs of the problem areas
- Approximate linear metres or a joint schedule
- Asbestos survey details if the building is older
- The product your specification calls for
Send us photos, 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.
Common problems we fix in Smithfield
Poor preparation explains many failed joints. Where the faces weren’t cleaned or primed as specified it comes away from one face.
Most enquiries start with one or more of the following:
- Worn sealant at communal door frames
- Mastic failing across several blocks on an estate
- A mix of products and colours from past repairs
- Cracked, hardened mastic round windows on a block
Trustees of buildings like St Bartholomew-the-Less can bring frame and external mastic into a planned maintenance list.
What your quote should include
- How they’ll work around occupants
- Whether their applicators hold CSCS cards
- Health and safety accreditation such as CHAS
- How joint depth will be controlled
How a job runs
Occupied buildings need a little choreography. The work area is signed and kept contained, keep walkways clear and work section by section so the rest of the building stays in use. In Smithfield, 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 check the asbestos register for older buildings and look at the joints.
- The products and programme are set out in a fixed quote.
- We strip out the old sealant.
- The joints are prepared and resealed with the right product.
- Buildings are completed in turn.
What we need from you
- Send your site hours and access windows
- Point out any areas we must not close
- Share the asbestos register for older buildings
Getting a fixed quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to phone 01277 525 020 or send details through our quote form with what you know.
Advice
Looking after buildings in and around Smithfield
The 2 miles around Smithfield include three care or nursing homes. Care home owners need frame and external mastic kept sound without unsettling residents. Blocks in London are usually run by managing agents, landlords or housing associations, with residents to notify and access to arrange. We plan around the notices and access you arrange.
For owners of several units at places like Grand Vitesse Industrial Estate, 1 mile to the south of Smithfield, one programme can deal with frame and external mastic across the lot. Student blocks close to universities like Queen Mary's University West Smithfield Campus, under half a mile south-east of Smithfield, are easiest to work on between tenancies.
Smithfield is about 1 mile north of London, in City of London. Commercial clients in Smithfield use us for work on mastic joints. Smithfield is one of 7 places we cover in City of London.
We take on mastic joints across the EC1V, EC1P and EC1R postcode area. Among the streets we cover are Oat Lane, Shoe Lane and Long Lane. Smithfield sits on or close to the A1 and A4. If your building is just outside Smithfield, we cover Farringdon (1 mile north), Blackfriars (1 mile south), Holborn (1 mile west), Temple Bar (1 mile south-west) and Clerkenwell (1 mile north).
Around Smithfield
Recent enquiries here include premises near Oriole pub, London Nautical School and St Alban's Church of England Primary School. Also close by are St Mary-at-Hill (1 mile south-east), Barts Health Archives (under half a mile south-east) and Postman's Park (under half a mile south-east). Smithfield has its own railway station: Farringdon station. Nearby you will also find Finsbury Health Centre (0.5 miles north-west) and Postal Museum (less than half a mile south-east). Open spaces near Smithfield include St. James's Park Lake and Ludgate Hill.