Greater London · England
Tufnell Park External Mastic
Problem with your movement joints in Tufnell Park? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Weathered mastic that no longer stretches
- Rigid filler in a joint that should flex
- Brick movement joints where the sealant has split
What we do, step by step
On the day, we start by going over the job with you, so you know exactly what we are doing. Surfaces next to the work are protected before we start. Most jobs take a few hours to a few days, depending on the length of joint and the access. In Tufnell Park, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Let us know about earlier repairs to the joints
- Let us know about stairs, lifts or work at height
Ask for a quote
We quote each job on its own. Just phone 0345 464 0079 or send us an email with the details.
Advice
External mastic in Tufnell Park, done properly
For buildings in Tufnell Park, we reseal external joints of all kinds, from brick movement joints to cladding panels. The preparation is the same whatever the wall: clean joint faces and the right depth. If you have water getting into walls through failed joints and brick movement joints where the sealant has split, we can put it right, on copings & trims, brickwork movement joints and joints between brick and frames alike.
London’s terraces and conversions often share walls, gutters and downpipes with their neighbours, so a leaking gutter joint or failed wall joint can affect more than one home. In a converted house in Tufnell Park, it’s worth checking who is responsible for the outside before booking.
Every job comes with a one-year guarantee, wherever you are in Greater London.
- Where
- Tufnell Park (NW5, N19, N7)
- Region
- Greater London
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How the job changes by surface
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
Places near Tufnell Park
Other services in Tufnell Park
Honest limits
To be straight with you, some problems need a different trade:
- Movement that is more than a sealant joint can take
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracking across the wall rather than at a joint
If in doubt, call 0345 464 0079 or email us and we’ll say what we think before you book.
What we seal
- Façade panels
- Concrete & block
- Copings & trims
- Render & cladding joints
- Brickwork movement joints
- Joints between brick and frames
Tufnell Park: your questions answered
Is parking a problem for a job in Tufnell Park?
Parking in Tufnell Park, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
I let a flat near Upper Holloway station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Why is there a gap in my brick wall?
A vertical gap in a long brick wall is usually a movement joint. It lets the bricks expand without cracking.
Which products do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We will tell you what we’re using and why.
Is there any odour?
That depends on the sealant. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Do you take out the old sealant first?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
Can a movement joint be filled with mortar?
No, not if it’s a movement joint. Pointing it stops it working. A flexible sealant is the right fill.
Landlords, agents and businesses in Tufnell Park
We also work for property managers and facilities teams in Tufnell Park and across Greater London. We can quote a run of properties together, and we are fully insured.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
Tufnell Park buildings and the weather
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. London terraces and converted houses often share gutters, downpipes and walls, so it’s worth agreeing who is responsible before work starts.
As a London address, Tufnell Park can be tricky for parking: let us know about parking bays, permits or a driveway. If you let a flat or house near Upper Holloway station, split movement joints are easy to miss on a rental until damp shows inside.
Tufnell Park is about 2 miles west of Highbury, in Greater London. For external mastic in and around Tufnell Park, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We’re based in Crawley and cover Greater London. 764 places in Greater London are on our list.
Jobs for external mastic in NW5, N19 and N7 is quoted and booked the same way as anywhere else. External mastic is available to properties on Hugo Road, Ward Road and Anson Road and the roads around them. Nearby, we also carry out external mastic in Dartmouth Park (1 mile west), Upper Holloway (1 mile north), Gospel Oak (1 mile west), Lissenden Gardens (1 mile west) and Holloway (1 mile east). Further out, we also cover London (4 miles south-east), City of Westminster (3 miles south), Marylebone (3 miles south), Kensington (5 miles south-west), Shoreditch (3 miles south-east) and Walthamstow (5 miles north-east).
Landmarks near Tufnell Park
We work in homes and buildings around Musical Theatre Academy, The Boston Arms Public House and Vaughan Williams Memorial Library, among other places. You will also find Acland Burghley School (within half a mile west) and Whittington Park (within half a mile north-east). The nearest railway station is Upper Holloway station, roughly 0.5 miles north-east. Other landmarks nearby include Royal Northern Hospital (0.5 miles north-east) and Montfichet's Tower (3.3 miles south-east). For a walk, there’s St. James's Park Lake and Dartmouth Park Hill.
Common problems we fix in Tufnell Park
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
These are the problems we’re asked about most:
- Joints where the bead has come unstuck
- Water getting into walls through failed joints
- Gaps where render, brick and frames meet
- Hard, crazed mastic that has stopped moving
Homes close to Church of St Benet and All Saints include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Questions to ask before you book
- The length of the guarantee
- Whether all the old sealant comes out first
- What insurance they hold
- What the quote includes, VAT included or not
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Act on the first splits you see
- Check external joints each spring
- Tell anyone working on the walls about the movement joints
- Clear growth from the base of walls and joints
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead and let water in behind.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick, all bigger jobs than a reseal.