Greater London · England
External Mastic in Norbiton
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Norbiton. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Brick movement joints where the sealant has split
- Movement joints filled with mortar instead of sealant
- Leaking joints around cladding and façade panels
Landlord and commercial work in Norbiton
We work for letting agents and landlords as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
External mastic for homes and businesses in Norbiton
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 where a rigid filler would soon crack. We work on render & cladding joints, concrete & block and copings & trims, and people most often call us about movement joints filled with mortar instead of sealant and damp patches traced to an open external joint.
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. For a flat in Norbiton, check the lease for who looks after the outside.
We stand behind the work with a one-year guarantee, so you are covered after we have gone.
- Location
- Norbiton (KT2, KT1, KT3)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The work itself takes a few hours to a few days, depending on the length of joint and the access. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Norbiton. A visitor permit or a nearby bay makes the visit run more smoothly.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- Both sides are cleaned back to sound material and primed if needed.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Keep children and pets away from the work area
- For indoor joints, keep the area dry beforehand if you can
- Clear items away from the joints we’re working on
How to get a quote
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we’ll talk you through the work.
Related advice
Outside joints around Norbiton
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. Historic houses like Pembroke Lodge (about 2.2 miles north) are a reminder that the area around Norbiton has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
Norbiton is in London, so parking needs planning: let us know about parking bays, permits or a driveway. For an older house near a landmark such as Church of St Peter, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Norbiton is about 3 miles west of Wimbledon, in Greater London. Whether you’re in the middle of Norbiton or further out, external mastic is available for homes and businesses alike. 764 places in Greater London are on our list, large and small. There’s also a page for London, roughly 10 miles from Norbiton.
We work across KT2, KT1 and KT3 for external mastic. That includes homes and businesses on New Road, York Road and Orme Road. Neighbouring places we cover for external mastic include Kingston upon Thames (1 mile west), Coombe (1 mile north-east), New Malden (1 mile south-east), Motspur Park (1 mile east) and Coombe Hill (2 miles north-east). We also work in nearby towns such as London (10 miles north-east), City of Westminster (9 miles north-east), Marylebone (9 miles north-east), Kensington (7 miles north-east), St Pancras (11 miles north-east) and Shoreditch (12 miles north-east).
Around Norbiton
In Norbiton, that means homes and buildings near Kingston Grammar School, Tiffin School and The Black Horse pub. There’s a railway station in Norbiton itself: Norbiton station. Other landmarks nearby include Kingston Hospital (under half a mile north) and Bentall Centre (0.9 miles west). Open spaces near Norbiton include Rose Walk and Kingston Hill Road area.
Places near Norbiton
Other services in Norbiton
When it isn’t the sealant
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Rising or penetrating damp from elsewhere in the wall
- Render that’s blown, hollow or coming away
- Movement that’s more than a sealant joint can take
If you are not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer.
Joints and surfaces we work on
- Joints between brick and frames
- Façade panels
- Concrete & block
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
What the job involves on each surface
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant.
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap.
Common problems we fix in Norbiton
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
Signs it’s time to call us include:
- Weeds or debris growing in open joints
- Joints pointed up with cement by mistake
- Gaps where render, brick and frames meet
- Failed sealant between panels on a façade
For landlords with property near Norbiton station, outside joints that have cracked can let damp into a rental, so check them between lets.
Questions to ask before you book
- What the quote includes, VAT included or not
- Who turns up on the day
- What guarantee comes with the work
- When the joint can take water or movement
Questions from Norbiton
Can you help a landlord with a rental near Norbiton station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear price.
Is parking an issue for external mastic in Norbiton?
Parking in Norbiton, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
Is it worth trying it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
How often do external joints need resealing?
That varies with the weather the wall faces, how much it moves and the sealant used. Treat it as a maintenance item and look at it yearly and renew it when it starts to fail.
Can you reach joints on upper floors?
It depends on the building. We work on joints that can be reached safely. Give us some details and we will confirm the access.
Why do you put foam in the joint first?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides so it can flex with the joint.
Do you seal joints where cladding meets other materials?
Yes. Different materials move at different rates, so the joint between them must be flexible. We choose one that suits both surfaces.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator.
How we quote for external mastic
There’s no set price list. The quote depends on:
- Whether old sealant or filler has to be cut out
- Working hours on commercial sites
- Which sealant suits the joint
- Whether the work is at height
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
What we need to know
Photos by email are helpful but not essential. Try to tell us:
- The address or postcode of the job
- A few photos by email, if you can
- How we’d reach the joints
- The problem you’ve noticed
We do not publish a price list. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or email us.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Check the sealant is paintable before painting near it
- Never let anyone fill a movement joint with mortar
- Show decorators and builders where the movement joints are
- Wash walls gently around the sealant
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead and let water in behind.
Small splits are the time to act. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.