Greater London · England
External & façade joints in Hanworth, Greater London
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Hanworth. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Cracked joints where brick meets render or frames
- Movement joints filled with mortar instead of sealant
- Movement joints with cracked, split or missing sealant
Do you need external mastic in Hanworth?
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint and speed up the damage.
Any of these means the joints need attention:
- Old sealant gone brittle and cracked
- Leaking joints around cladding and façade panels
- Failed seals between different materials
- Joints pointed up with cement by mistake
As a London address, Hanworth can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
What your quote should include
- How hidden problems are handled
- How the colour is chosen
- Is the old sealant removed completely?
- When the joint can take water or movement
External mastic in Hanworth, done properly
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we will confirm what access is needed. If you are dealing with rain getting behind render or cladding at a joint and sealant pulling away from one side of the joint, we can put it right, on brickwork movement joints, concrete & block and copings & trims alike.
Working on the outside of a London home means planning access: shared paths, upper floors and parking. For a home in Hanworth, tell us how high the joints are and how to reach the back of the building.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Hanworth (TW13, TW12, TW2)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
How we quote for external mastic
Your quote is based on your job. We look at:
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
- The type of sealant required
- Access and height
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What we need to know
To make quoting easier, please include:
- Whether it’s a home or a business
- What’s wrong with the joints now
- Roughly how big the job is
- Photos by email, if that is easy
Getting a quote is simple: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand, and we will take it from there.
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Structural movement, which needs a surveyor or engineer
- Cracking across the wall rather than at a joint
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before you book.
Surfaces we seal
- Render & cladding joints
- Concrete & block
- Façade panels
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
Leave it or put it right?
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and does not last so it’s worth doing right. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Hanworth, the repair is bigger than the sealant job would have been.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, phone 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why us?
- Arbo and Everbuild products
- Every job guaranteed for a year
- Experience in homes, commercial sites and hotels
- Full insurance on every job
Take a look at what affects the cost or customer reviews.
FAQs for Hanworth
Do you cover Hanworth for external mastic?
Yes, Hanworth is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.
Is parking a problem for a job in Hanworth?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Do you guarantee your work?
Yes. There’s a 12-month guarantee on every job, large or small.
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 you seal joints between two different materials?
Yes. Materials like render, brick, metal and uPVC all move differently, so a flexible sealant is needed where they meet. The sealant is matched to both sides.
What do you put in the joint?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we are using and why.
I’m a tenant. Can you help?
Of course. Check with your landlord; we can send the quote to them too.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Outside joints around Hanworth
With historic houses such as Strawberry Hill House (about 2 miles east) nearby, there’s older building stock in the area around Hanworth as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. In terraces and conversions, gutters and walls are often shared with the neighbours, so check who is responsible for the outside before booking.
If you look after a building such as Buckingham Primary School, larger buildings have long runs of movement joint that eventually need resealing. For landlords with property near Hampton station, split movement joints are easy to miss on a rental until damp shows inside.
Hanworth is about 6 miles south of Hayes, in Greater London. We carry out external mastic for homes and businesses in Hanworth. Across Greater London, we cover 764 places, and Hanworth is one of them. Our London page covers work nearby (13 miles or so).
Our applicators cover all of the TW13, TW12 and TW2 postcode area for external mastic. That includes homes and businesses on Fir Road, New Road and Bel Lane. We also cover Hampton (1 mile south-east), Hampton Hill (1 mile east), Fulwell (1 mile east), Whitton (2 miles north-east) and West Molesey (2 miles south). Larger places within reach include London (13 miles east), City of Westminster (11 miles north-east), Marylebone (12 miles north-east), Kensington (9 miles north-east), St Pancras (13 miles north-east) and Shoreditch (15 miles north-east).
Landmarks near Hanworth
In Hanworth, that means homes and buildings near Hampton School, Hampton Academy and Crane Park. The closest station to Hanworth is Hampton station, about 1.1 miles south of the centre. Nearby you will also find Teddington Memorial Hospital (1.8 miles east) and Kempton Steam Museum (1.1 miles west). Green spaces nearby include Garden Lake and Oak Avenue Local Nature Reserve.
What the job involves on each surface
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. If that is happened, we rake it out and reseal it properly.
Joints between dissimilar materials
Each side of the joint may need its own preparation. Both surfaces are cleaned and primed as the product requires.
What we do, step by step
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours for a handful of joints, longer for a whole elevation. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- First we look over the joints with you, agree which to renew and talk through access.
- We cut out the failed sealant and rake out any dirt or growth.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Mention any leaks or damp you’ve noticed
- Try not to wet indoor joints just before the visit
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or drop us an email with the details and send photos if you have them.