Southampton · England
Sand mastic for sash & case windows in Upton, Southampton
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Upton, backed by a 12-month guarantee. Ask us for a quote.
- Failed mastic on an exposed elevation
- Open joints round the window box
- Modern sealant on a period surround
Sand mastic in Upton, done properly
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. We work on timber door frames, period & listed homes and tenement windows, and the jobs we see most are mastic worn away on windows facing the weather and gaps between timber frames and stone or brick.
Mastic can only go onto a dry, clean joint, so window work in Upton is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
All our work comes with a 12-month guarantee, wherever you are in Southampton.
- Location
- Upton (SO16)
- Wider area
- Southampton
- Guarantee
- One year on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Upton: your questions answered
Does living near the coast affect sand mastic in Upton?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Is Upton within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Will it make a mess?
Tidy work is part of the job. Nearby surfaces are protected, and the area is left clean when we finish.
Can you replace silicone on a period window with sand mastic?
Yes, we do this often. All the old silicone is removed first so the mastic can sit properly.
How do I get a quote for sand mastic in Upton?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Do you work for hotels and businesses?
Yes. We’ve worked for hotels, offices and other businesses and we’re fully insured.
Is it possible to paint over sand mastic?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll advise.
Honest limits
It helps to know what we cannot do too:
- Sashes that rattle, stick or won’t open
- Putty and glazing repairs
- Whether work needs listed building consent
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think.
Joints and surfaces we work on
- Brick reveals
- Timber door frames
- Tenement windows
- Sash and case windows
- Stone surrounds
- Period & listed homes
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What happens if it’s left?
Cement-based fillers and modern sealants do not always suit a period surround. Sand mastic matches what was there and that can be important for listed homes. Older cottages and farmhouses around Upton can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Why choose Mr Mastic in Upton
- Experience in homes, commercial sites and hotels
- Tidy, careful work
- Arbo and Everbuild products
- 4.9 on Google from 180+ five-star reviews
See how sealant jobs are priced and our reviews.
Windows and doors in Upton
Upton is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. 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.
In the older streets around Church of St John, the joint between an old wall and a newer frame is generally the first place rain gets in. If you let a flat or house near Redbridge station, older sash windows in a rental need their mastic kept sound to keep the weather out. Schools such as Nursling Church of England Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Upton is about 2 miles north-west of Regents Park, in Southampton. We provide sand mastic to homes and businesses in Upton and nearby. Across Southampton, we cover 40 places, and Upton is one of them.
Jobs for sand mastic in SO16 is quoted and booked the same way as anywhere else. Sand mastic is available to properties on Upton Lane, Romsey Road and Greenwood Avenue. Nearby, we also carry out sand mastic in Nursling (1 mile south), Rownhams (1 mile east), Ashfield (1 mile north-west), Toothill (1 mile north) and Hillyfields (1 mile south). We also work in nearby towns such as Southampton (4 miles south-east), Shirley (3 miles south-east), Townhill Park (5 miles east), Midanbury (5 miles east), Thornhill (6 miles south-east) and Chartwell Green (5 miles east).
What’s near Upton
Locally, jobs take us to homes and businesses close to Oaklands Community School and Oasis Academy Lord's Hill. Upton’s nearest station is Redbridge station, about 2.1 miles south of the centre. A little further out are Princess Anne Hospital (1.8 miles south-east) and Eling Experience (2.2 miles south). Not far away are Testwood Lakes.
Also near Upton
More services for Upton
How it works
We bring everything the job needs with us, so there’s nothing for you to buy. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take anything from a few hours to a full day, depending on how many windows. Somewhere as small as Upton, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Mention any sign-in or site rules at work premises
- Keep children and pets away from the work area
- Mention any parking rules near the property
Ask for a quote
For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We will send you a clear quote before any work starts.
Related advice
What affects the quote in Upton
We do not publish a price list. The quote depends on:
- When we can work, for business premises
- How many areas need sealing
- Access and height
- How much there is to do
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
Helping us quote
What to tell us when you ask for a quote:
- A few pictures by email, if you can
- Whether it’s a home or a business
- Where the property is
- The rough size of the job
Getting a quote is simple: let us know the job and the location. A few photos by email make the job easier to understand, and we’ll come back to you with a quote.
How the job changes by surface
Tenement and terrace windows
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.
Stone surrounds
We take care not to mark the stone while raking out the old mastic.
Landlord and commercial work in Upton
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
For anyone letting property in or around Upton, several properties can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.