Greater London · England
Norbiton Window Mastic
We cover Norbiton for mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Old mastic that has gone black or come away
- Gaps between the frame and the inside reveal
- Gaps left after new windows were fitted
How we handle window mastic in Norbiton
Colour matters on a frame. We can seal in white, brown, anthracite grey, black or clear, so the bead blends with the window rather than framing it. Common call-outs are for untidy mastic left by window fitters and water coming in at the bottom corners of a door, across window sills, aluminium frames and composite doors.
London has a lot of flats and conversions, where windows are often on upper floors. Who looks after the outside of the frames can depend on the lease, so check that first.
A 12-month guarantee comes as standard, so you are covered after we have gone.
- Place
- Norbiton (KT2, KT1, KT3)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
A quick bead over the top of old mastic looks like an easy fix, but new sealant can’t bond to old, crumbling mastic. It peels before long, and water still gets in behind. Proper resealing starts with removing the old joint. In a flat in Norbiton, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or send us an email and we will talk you through it.
Why choose Mr Mastic in Norbiton
- A choice of colours where the product allows
- Sanitary silicone with an anti-fungal additive in wet areas
- Neat joints and a tidy finish
- 12-month guarantee on every job
Take a look at our cost guide and what customers say.
For landlords and businesses
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.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
Frames and glazing around Norbiton
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. In a converted house or block, who looks after the windows depends on the lease, so check that before you book.
As a London address, Norbiton can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. For landlords with property near Norbiton station, renewing tired window mastic between tenants heads off draught and damp complaints.
Norbiton is about 3 miles west of Wimbledon, in Greater London. Every kind of property in Norbiton can book us for window mastic, old or new, large or small. The work is guaranteed for a year. Across Greater London, we cover 764 places, Norbiton among them. London is on our list too, around 10 miles away.
Our applicators cover all of KT2, KT1 and KT3 for window mastic. Streets in the area include New Road, York Road and Orme Road. We also cover the places around Norbiton: 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). Further out, we also cover 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).
Local landmarks in Norbiton
Typical jobs here are in homes near Kingston Grammar School, Tiffin School and The Black Horse pub. There’s a railway station in Norbiton itself: Norbiton station. A little further out are 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.
The process
On the day, we start by going over the job with you, so you know exactly what we are doing. We protect the surfaces around the joints before work begins. Most jobs take a morning for a couple of windows and a door. In Norbiton, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
How to prepare
- Mention any parking rules near the property
- Mention any sign-in or site rules at work premises
- Let us know if you’ve seen damp or leaks
How to get a quote
For window mastic in Norbiton, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before we start.
Read more
DIY sealant or a professional job?
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.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Nearby places to Norbiton
Other services in Norbiton
Norbiton questions
Can parking be tricky for a visit in Norbiton?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
Can you help a landlord with a rental near Norbiton station?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear price.
Can you get sealant to suit coloured frames?
Yes. Grey and black frames get grey or black sealant, and wood-effect frames generally suit brown.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
When is the sealant fully cured?
Different products cure at different speeds, so please follow the time we give you.
Can new window sealant be painted?
Not usually, if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
How much does window mastic cost in Norbiton?
Size, access and the old material all affect the cost. Call for a quick quote.
Common problems we fix in Norbiton
Joint shape matters as much as the product. A thin smear across a wide gap has nothing to it, while a joint packed solid can’t stretch. That is what backing rod is for.
The problems people generally mention when they call are:
- Draughts coming in around windows and doors
- Rushed sealant from a window installation
- Mastic that’s falling out in pieces
- Rain getting in at the frame or under the sill
Schools such as St Paul's CofE Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Comparing quotes
- Who does the work, and how experienced they are
- Whether you can choose the colour
- Whether they’re fully insured
- How the surfaces are prepared before sealing
How to look after the new joints
Aftercare is simple:
- Avoid blasting the frames with a pressure washer
- Use gentle cleaners on frames and sealant
- Clear any debris from frame drain holes
- Keep solvents and bleach off the sealant
Keep the new mastic undisturbed while it cures, following the cure time we give you. Do not point a pressure washer at the joints.
Wet, windy weather is when failed mastic shows itself, but resealing works best in dry conditions. Sorting cracked mastic early means the joint is sound before the bad weather.
Quotes for window mastic in Norbiton
The quote reflects the job in front of us. We look at:
- The size of the job
- The product the joint needs
- Mould in or behind the old joints
- Any working-time requirements on site
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference.
Helping us quote
You do not need to know the technical terms. Just tell us:
- If it’s domestic, commercial or a hotel
- Where the property is
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
To get a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. We’ll give you a clear quote before any work starts.