Greater London · England
External Mastic in Enfield Highway
Problem with your movement joints in Enfield Highway? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Movement joints filled with mortar instead of sealant
- Joints with sealant missing in places
- Gaps where render, brick and frames meet
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Walk round the building once a year and look at the joints
- Fix overflowing gutters above sealed joints
- Check the sealant is paintable before painting near it
- Keep soil, plants and ivy away from the joints
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Act while the splits are small. At that stage it’s a simple cut out and reseal.
External mastic in Enfield Highway
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a colour to suit. If you’re dealing with weathered mastic that no longer stretches and leaking joints around cladding and façade panels, we can help, whatever the surface.
In London terraces and converted houses, gutters and walls are often shared with the house next door, so a leaking gutter joint or failed wall joint can affect more than one home. For a flat in Enfield Highway, check the lease for who looks after the outside.
The work is covered for a year after we finish. If anything isn’t right with it, ring 0345 464 0079 or email us.
- Where
- Enfield Highway (EN3, EN1)
- Region
- Greater London
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Enfield Highway
More services for Enfield Highway
Enfield Highway: your questions answered
Do you cover Enfield Highway for external mastic?
Yes, Enfield Highway is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing.
Do you work for landlords with property near Brimsdown station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear price.
When will the joints need doing again?
That depends on the wall, the weather and the movement. Look for splits, hardening or edges coming away and have them redone then.
What is a movement joint?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.
Can I add another job to the visit?
Yes, we can. More than one area can go on one quote.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we are using and why.
What is backing rod for?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Do you take out the old sealant first?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Signs you need external mastic in Enfield Highway
Poor preparation causes many early failures: dusty or wet faces, no primer where one was needed, or old sealant left in. The sealant never bonds properly.
Signs it’s time to call us include:
- Movement joints filled with mortar instead of sealant
- Movement joints with cracked, split or missing sealant
- Leaking joints around cladding and façade panels
- Damp patches traced to an open external joint
As a London address, Enfield Highway can be tricky for parking: let us know about parking bays, permits or a driveway.
Questions to ask before you book
- Who does the work, and how experienced they are
- How the joint is cleaned and prepared
- Which colour the sealant will be
- Is VAT in the price?
What we can’t put right
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Subsidence or other structural problems
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Surfaces we seal
- Brickwork movement joints
- Render & cladding joints
- Joints between brick and frames
- Copings & trims
- Façade panels
- Concrete & block
How we quote for external mastic
The quote reflects the job in front of us. We look at:
- Access and height
- The old material and how stubborn it is
- The number and length of the joints
- Working hours on commercial sites
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we will go through it with you.
What to tell us for a quote
What to tell us when you ask for a quote:
- The address or postcode of the job
- A few photos by email, if you can
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
We don’t publish a price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, ring 0345 464 0079 or email us.
Walls and rooflines in Enfield Highway
In terraces and conversions, gutters and walls are often shared with the neighbours, so it’s worth agreeing who is responsible before work starts. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Brimsdown station, outside joints that have cracked can let damp into a rental, so check them between lets. For site and facilities teams at buildings such as Enfield Heights Academy, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Enfield Highway is about 2 miles east of Enfield, in Greater London. From the centre of Enfield Highway to the outskirts, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Enfield Highway is one of 764 towns and villages in Greater London where we work for external mastic. There’s also a page for London, about 11 miles away.
Work in EN3 and EN1 works the same way as everywhere else we cover. External mastic is available to properties on Hoe Lane, Old Road and East Road and the roads around them. Close by, we work in Enfield Wash (1 mile north), Brimsdown (1 mile east), Enfield Lock (1 mile north-east), Bullsmoor (1 mile north) and Freezywater (1 mile north-east). Larger places within reach include London (11 miles south), City of Westminster (11 miles south-west), Marylebone (11 miles south-west), Kensington (13 miles south-west), St Pancras (10 miles south) and Shoreditch (10 miles south).
Local landmarks in Enfield Highway
Locally, jobs take us to homes and businesses close to Russet House School, Gunpowder Park and Aylward Academy. For rail, the closest station is Brimsdown station, roughly 0.6 miles south-east of the centre. Nearby you will also find St Michaels Hospital (1.9 miles west) and Museum of Enfield (1.9 miles south-west). The countryside around Enfield Highway includes Ainslie Wood and Pole Hill.
For landlords and businesses
Housing providers, facilities teams and property managers book us too in Enfield Highway and across Greater London. We can quote a run of properties together, and we are fully insured.
For anyone letting property in or around Enfield Highway, several properties can be quoted together. Send us the addresses and the work at each.
How it works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours for a handful of joints, longer for a whole elevation. In Enfield Highway, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about earlier repairs to the joints
- Mention any tricky access
How to get a quote
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we will talk you through the work.
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Should I try it myself first?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.