Facade and window perimeter sealing in Smithfield, City of London
Facade joint and window perimeter sealing on commercial buildings in Smithfield. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Old perimeter mastic that has dried out
- Failed seals around shopfront and entrance frames
- Discoloured or dirty facade joints
Need facade sealing in Smithfield?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Work for main contractors and building owners
If you look after buildings for someone else, you need clear quotes and clear reporting. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.
Hotels, schools, healthcare sites, offices and retail units come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.
How we handle facade sealing in Smithfield
A good facade joint depends on design as much as product. The width has to suit the expected movement and the sealant’s movement capability, while rod fixes the depth and stops the bead sticking to the rear with the ratio the sealant maker recommends, often around 2:1. If you are dealing with cold air coming in at window perimeters and leaks at window and door perimeters, we can put it right, on shopfront frames, cladding panel joints and coping and flashing joints alike. Searching for sealant specialists in Smithfield? We have been sealing commercial buildings since 2005, with CSCS-carded applicators.
Every London site, Smithfield included, is inside the ULEZ, which applies to deliveries and contractors’ vans alike. Alongside that, sites normally need booked deliveries and a plan for where materials go.
Whoever the client is, the cover is the same: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Where
- Smithfield (EC1V, EC1P, EC1R)
- Region
- City of London
- Cover
- 12 months on our workmanship
- Quotes
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
New build and refits around Smithfield
As part of Greater London, Smithfield is inside the ULEZ, which applies to every van on site. Add booked deliveries and tight storage, and the mastic package needs planning with the site team. There are plenty of hotels within about 2 miles of Smithfield. Hotel extensions and refits normally have to fit around bookings, so mastic dates are tight.
On a campus such as Queen Mary's University West Smithfield Campus (under half a mile south-east of Smithfield), new teaching buildings and residences are usually built and refurbished around the academic year. When units on a site such as Grand Vitesse Industrial Estate (to the south of Smithfield) are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.
Smithfield is about 1 mile north of London, in City of London. Businesses, contractors and managing agents in Smithfield use us for work on facade joints. 7 places across City of London fall within our area, Smithfield among them.
Anyone looking for facade sealing in EC1V, EC1P and EC1R gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include Oat Lane, Shoe Lane and Long Lane. Being close to the A1 and A4, Smithfield is easy to get to with materials and equipment. Just outside Smithfield, we also work in Farringdon (1 mile north), Blackfriars (1 mile south), Holborn (1 mile west), Temple Bar (1 mile south-west) and Clerkenwell (1 mile north).
What’s near Smithfield
Around Smithfield, our work takes us to commercial buildings near Oriole pub, London Nautical School and St Alban's Church of England Primary School and the streets around them. Other local landmarks include St Mary-at-Hill (1 mile south-east), Barts Health Archives (less than half a mile south-east) and Postman's Park (under half a mile south-east). There’s a railway station in Smithfield itself: Farringdon station. Nearby you’ll also find Finsbury Health Centre (0.5 miles north-west) and Postal Museum (under half a mile south-east). For a walk, there’s St. James's Park Lake and Ludgate Hill.
Signs you need facade sealing in Smithfield
Three-sided adhesion is a classic installation fault. With no backing, the sealant is restrained and tears as the joint moves.
Any of the following is a good reason to get the joints checked over:
- Old perimeter mastic that has dried out
- Failed seals around shopfront and entrance frames
- Patch repairs that keep failing
- Water coming in around window frames
Work at a hotel such as Zetter Hotel, under half a mile north of Smithfield, tends to be programmed around bookings, mastic included.
Before you book anyone
- Are they CHAS accredited or on Constructionline?
- Whether old or failed sealant will be cut out, not overlaid
- Will CSCS-carded applicators be on site?
- What level of public liability insurance do they hold?
What sets the cost
We price every job individually. The things that drive the figure:
- Quantities, in metres or numbers
- The size and state of each joint
- Specialist products, such as fire-rated or hygienic sealants
- Induction, permit and paperwork requirements
Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.
Sending details for a quote
For an accurate fixed quote, we need to understand the site. Useful things to include:
- Where the site is, with the postcode
- Asbestos survey details if the building is older
- Clear photos of the problem areas
- Your programme or deadline
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to speak to us on 01277 525 020 or email drawings and photos with what you know.
When it isn’t the sealant
Being straight saves everyone time. Fresh joints won’t solve:
- Water getting in through cracked render or porous masonry
- Installing or repairing glazing systems
- Joints whose design needs changing by the specifier
Not sure which it is? You can give us a call on 01277 525 020 or use the quote form and we will tell you honestly.
Joints and surfaces we work on
- Coping and flashing joints
- Stone and brick facade joints
- Shopfront frames
- Cladding panel joints
- Perimeter joints where frames meet the structure
- Window and door perimeters
Our process
On arrival, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before any cutting starts, with the work itself usually taking anything from a single day to several weeks, depending on joint lengths, access and the weather. 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.
- Access, site rules and timing are settled with the client up front.
- Weather and temperature are checked against the product’s limits.
- Each joint is cut out and the edges inspected.
- Faces are cleaned, primed where needed and backed.
- Facade-grade sealant goes in and is tooled to a tidy concave profile.
- Once signed off, the work carries our 12-month guarantee.
Getting the site ready
- Point out any areas we must not close
- Arrange parking or a loading space
- Tell staff and tenants when we’ll be in
Request a quote
Photos, drawings or a schedule of the joints are often enough for a fixed quote. If the job needs a look first, we’ll arrange a site visit.
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Places near Smithfield
What else we do in Smithfield
Common questions from Smithfield clients
Can you work around term dates at a campus such as Queen Mary's University West Smithfield Campus?
Yes, holiday working periods are the norm on campus jobs. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Can you work at a site such as Grand Vitesse Industrial Estate, by Smithfield?
Yes. Estates, retail parks and business parks around Smithfield, Grand Vitesse Industrial Estate among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.
Can you just add new sealant on top?
No. New sealant won’t hold on old sealant, so the old bead is cut away and the faces are cleaned before resealing. That is what makes the new joint last.
What’s the quickest route to a quote?
You can use the quote form on this site; alternatively, ring 01277 525 020 or send photos by email. Photos, drawings or a joint schedule help us quote quickly.
Do you take on multi-site work?
Yes. Several buildings can share a single quote, with one point of contact.
Will you come and look before quoting?
Many jobs can be quoted from photographs, drawings or a joint schedule. Where they aren’t, we arrange a site visit.
Can you work in cold or wet weather?
Year-round work is possible as long as joints are dry and temperatures suit the product. Cold, damp mornings can delay a start.
Maintenance after handover
To get the most from the new sealant:
- Investigate damp beside windows promptly
- Keep the sealant details on the building file
- Check the asbestos register before old mastic is disturbed
- Keep sills, gutters and drainage paths clear
Let the new sealant cure before washing the facade or windows near it. Keep high-pressure jets and strong chemicals away from new sealant, so brief your window cleaners.
Tie resealing in with redecoration, cladding repairs or other access. One set-up for several trades saves money.