Greater London · England
External Mastic in Ilford
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Ilford and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Joints where the bead has come unstuck
- Water getting into walls through failed joints
- Failed sealant between panels on a façade
Leave it or put it right?
Done well, a resealed joint is a neat, straight line that suits the wall. A rushed bead with no backing looks untidy and does not last, so it pays to do it properly once. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Ilford, the repair is bigger than a sealant job.
The cost depends on the amount of work, how much old material has to come out and how easy the joints are to reach. We give a clear quote before any work starts, so you know where you stand.
Why choose Mr Mastic in Ilford
- Old sealant always removed completely
- Sanitary silicone with an anti-fungal additive in wet areas
- Tidy, careful work
- Trusted Arbo and Everbuild sealants
Read our cost guide or our reviews.
External mastic in Ilford
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement. Typical jobs include sealant pulling away from one side of the joint and movement joints filled with mortar instead of sealant, across joints between brick and frames, concrete & block and copings & trims.
London’s terraces and conversions often share walls, gutters and downpipes with their neighbours, so one failed joint can cause damp for more than one household. In a converted house in Ilford, it’s worth checking who is responsible for the outside before booking.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Place
- Ilford (IG1, IG3, IG2, E12)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
Hotels need rooms back in use, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
DIY versus a professional finish
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Your questions about external mastic in Ilford
Can you help a landlord with a rental near Ilford station?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.
Can parking be tricky for a visit in Ilford?
Parking in Ilford, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
How long should I leave it?
Different products cure at different speeds, so follow the cure time we give you when we finish.
Do you seal joints where cladding meets other materials?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. The colour is chosen to suit.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Is it worth trying it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned.
Do you use backing rod?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. Then the sealant bonds to two faces and can move.
What the job involves on each surface
Copings and trims
Coping joints that leak let water straight down into the wall. Sealing them early saves the wall below.
Render joints
Cracks along render joints let water in behind the coat. Resealing the joints early keeps water out and helps it last.
The process
We bring everything the job needs with us, so you don’t need to buy or prepare anything. After a quick look at the joints together, the area is protected and the work begins. Most jobs take anything from a few hours to several days, depending on the building. In Ilford, 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 walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Mention any tricky access
- Keep pets and children clear of the area while we work
Get a quote
If you are in Ilford and need external mastic, ring 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
Read more
Ilford buildings and the weather
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. In terraces and conversions, gutters and walls are often shared with the neighbours, so it’s worth agreeing who is responsible before work starts.
For landlords with property near Ilford station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. For site and facilities teams at buildings such as Winston Way Academy, larger buildings have long runs of movement joint that eventually need resealing. As a London address, Ilford can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Ilford is about 4 miles east of Leyton, in Greater London. For external mastic in and around Ilford, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We cover Greater London from our Crawley base. Ilford is one of 764 towns and villages in Greater London we cover. For nearby work, see our London page, about 8 miles away.
We cover every part of IG1, IG3, IG2 and E12 for external mastic. External mastic is available to properties on Station Road, Axon Place and Hainault Street. With the A118 close by, Ilford is easy for our applicators to reach. If you are just outside Ilford, we cover Cranbrook (1 mile north-west), Loxford (1 mile south), Seven Kings (1 mile north-east), Manor Park (1 mile south-west) and Little Ilford (1 mile south-west). Within a short drive, we also cover London (8 miles south-west), City of Westminster (10 miles west), Marylebone (10 miles west), Kensington (13 miles west), St Pancras (9 miles west) and Shoreditch (7 miles west).
Local landmarks in Ilford
Typical jobs here are in homes near Great Spoon of Ilford pub, The Ursuline Academy Ilford and South Park, among other places. Ilford has its own railway station: Ilford station. Well-known places in the area include Gallions Reach Shopping Park (3.5 miles south) and Redbridge Museum (within half a mile south-west). The countryside around Ilford includes Hollow Pond and Ripple Nature Reserve.
Keeping the joints in good condition
So the new joints stay in good condition:
- Deal with leaking gutters that soak the joints below
- Look over the joints every year, ideally after winter
- Keep high-pressure jets off the joints
- Get split or bare joints resealed while the damage is small
Do not paint over the new sealant unless we have said the product is paintable. Paint can crack on a flexible joint.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years.
What affects the quote in Ilford
Some jobs are bigger than they look, and some smaller. The main factors:
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
- How much there is to do
- How many areas need sealing
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.
What to tell us for a quote
To make quoting easier, please include:
- Whether it’s a home or a business
- Photos by email, if that is easy
- Whether it has been sealed before
- What’s wrong with the joints now
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work.