Greater London · England
External & façade joints in Hainault, Greater London
Sealing brickwork movement joints, render, cladding and façade joints in Hainault, with a one-year guarantee on every job. Ask us for a quote.
- Failed sealant between panels on a façade
- Weeds or debris growing in open joints
- Rain getting behind render or cladding at a joint
External mastic in Hainault, done properly
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two. We work on copings & trims, joints between brick and frames and façade panels, and people most often call us about failed seals between different materials and plants rooting in failed movement joints. Whether you’re looking for a local mastic man, a silicone specialist or a sealant company in Hainault, Mr Mastic can help.
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 Hainault, check the lease for who looks after the outside.
Big or small, you get the same one-year guarantee.
- Place
- Hainault (IG6, IG7, IG8)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 07833 053749
- Page updated
- 26 October 2026
What happens if it’s left?
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That protects surfaces like brick, render and concrete. A stiffer product can damage the joint edge as it fails. In London conversions, one flat’s bathroom is often above another flat’s ceiling, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Dealing with it early is far simpler.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.
Why choose Mr Mastic in Hainault
- A choice of colours where the product allows
- We leave the area clean and tidy
- Anti-fungal sanitary silicone in wet areas
- Over 20 years’ experience
See our cost guide and what customers say.
FAQs for Hainault
Is parking an issue for external mastic in Hainault?
Parking in Hainault, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Can you do external mastic in Hainault?
Yes, Hainault is within the area we cover. Our work covers London and the South East. Just call 07833 053749 or drop us an email with a few details of the job, and we’ll give you a clear quote.
Can landlords and businesses book you?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels.
How long does the job take?
As a guide, most jobs take anything from a few hours to several days, depending on the building. Bigger jobs take longer, and we will tell you how long to expect.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
How much does external mastic cost in Hainault?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before work begins.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you do not need to watch us work.
For landlords 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.
We work for letting agents and landlords as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Honest limits
We will not take on work that will not last, so here’s what sealant cannot put right:
- Loose or hollow render, which needs re-rendering
- Cracking across the wall rather than at a joint
- Adding movement joints to masonry that has none
If in doubt, call 07833 053749 or drop us an email and we’ll say what we think before booking.
Joints and surfaces we work on
- Brickwork movement joints
- Joints between brick and frames
- Render & cladding joints
- Concrete & block
- Façade panels
- Copings & trims
What affects the cost of external mastic
For a quick quote, just ask. The main things that affect it are:
- Which sealant suits the joint
- The size of the job
- Whether the work is at height
- The number of rooms or windows
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What to tell us for a quote
To help us quote quickly, let us know:
- Where the job is, and your postcode
- Whether it’s a home or a business
- The rough size of the job
- What’s wrong with the joints now
We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, call 07833 053749 or drop us an email.
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Towns and villages near Hainault
More services for Hainault
Walls and rooflines in Hainault
With historic houses such as Valentines Mansion (about 2.4 miles south-west) nearby, there’s older building stock in the area around Hainault as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as St Francis of Assisi, the joints between older walls, newer extensions and the roofline need a sealant that can move. If you look after a building such as Limes Farm Junior School, larger buildings have long runs of movement joint that eventually need resealing.
Hainault is about 2 miles east of Woodford, in Greater London. Whether you are in the middle of Hainault or further out, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Our Greater London coverage runs to 786 places, Hainault among them.
Postcode districts we cover here for external mastic: IG6, IG7 and IG8. If you need external mastic at a property on Hughes Road, Neville Road and Addison Road or a nearby road, our applicators can take on the job. Neighbouring places we cover for external mastic include Chigwell (1 mile north-west), Woodford Bridge (1 mile west), Woodford Wells (2 miles west), Woodford (2 miles west) and Buckhurst Hill (3 miles north-west). Larger places within reach include London (11 miles south-west), City of Westminster (12 miles south-west), Marylebone (12 miles south-west), Kensington (14 miles south-west), St Pancras (10 miles south-west) and Shoreditch (9 miles south-west).
Near you in Hainault
Around Hainault, our work takes us to homes and buildings near Fairlop Waters, Kantor King Solomon High School and The New Fairlop Oak pub and the streets around them. For rail, the closest station is Seven Kings station, roughly 2.8 miles south of the centre. A little further out are Claybury Hospital (0.8 miles west) and Redbridge Museum (3.2 miles south). The countryside around Hainault includes Hainault Lodge and Highams Park Lake.
Common problems we fix in Hainault
UV, rain and frost all age exterior sealant. In time it goes hard, crazes on the surface and stops stretching, so the next time the wall moves, it splits or pulls away.
Keep an eye out for these signs:
- Joints pointed up with cement by mistake
- Failed sealant between panels on a façade
- Gaps where render, brick and frames meet
- Hard, crazed mastic that has stopped moving
If you let a flat or house near Seven Kings station, split movement joints are easy to miss on a rental until damp shows inside.
What your quote should include
- What happens if they find a problem under the old sealant
- Which sealant they’ll use, and why
- Whether they’re fully insured
- Which colour the sealant will be
The process
There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the job takes a few hours for a handful of joints, longer for a whole elevation for a typical job. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Hainault. A visitor permit or a nearby bay makes the visit run more smoothly.
- 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.
Preparing for the visit
- Clear items away from the joints we are working on
- Keep children and pets away from the work area
- Mention any parking rules near the property
Getting a quote
For a quote, ring 07833 053749 or send us an email with the location and a short description of the problem. We will give you a clear quote before any work starts.