Hampshire · England
Sand Mastic in Sarisbury
Sand mastic across Sarisbury and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Old cement repairs round a window that have failed
- Crumbling sand mastic round a window
- A silicone bead on a sash window that spoils the look
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Check with your local planning authority if your home is listed
- Avoid heavy scraping on the mastic joint
- Get any rot dealt with first
- Avoid patching sand mastic with silicone
Do not run silicone over the new mastic. If you see a crack, ask us to take a look before trying a quick fix.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
Sand mastic for homes and businesses in Sarisbury
Sand mastic skins over fairly quickly, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted, so ask us before you decorate. If you have mastic that needs renewing before redecorating and mastic worn away on windows facing the weather, we can help.
Homes around Sarisbury range from older properties to newer houses, and their windows range just as widely. Each frame material needs the right sealant against the right wall.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Sarisbury (SO31)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Windows and doors in Sarisbury
Sarisbury is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For site and facilities teams at buildings such as Sarisbury Church of England Junior School, larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as Church of St Paul, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Sarisbury is about 3 miles south of Hedge End, in Hampshire. Whether you are in the middle of Sarisbury or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Our Hampshire coverage runs to 683 places, and Sarisbury is one of them. You can also see our page for Southampton, roughly 6 miles from Sarisbury.
Work in SO31 is quoted and booked the same way as anywhere else. We cover properties on Woodlands Close, Bridge Road and Painswick Close and the roads around them. Other places close to Sarisbury include Swanwick (1 mile north-west), Park Gate (1 mile east), Sarisbury Green (1 mile south-west), Locks Heath (1 mile south-east) and Lower Swanwick (1 mile north-west). Larger places within reach include Winchester (13 miles north), Gosport (7 miles south-east), Havant (13 miles east), Eastleigh (7 miles north-west), Fareham (4 miles east) and Horndean (12 miles east).
Near you in Sarisbury
We work in homes and buildings around Brookfield Community School and Language College and The Old Ship Inn, among other places. The nearest railway station is Swanwick station, roughly 0.7 miles east of the centre. Well-known places in the area include Coldeast (under half a mile south) and Bursledon Brickworks Industrial Museum (1 mile north). For a walk, there’s Swanwick Lakes.
Why deal with it now?
Before painting the windows, it pays to renew the mastic. Painting over failed mastic doesn’t seal it and traditional guidance is to leave the new mastic unpainted. Around Sarisbury, water from a failed joint in an older home can soak into timber and plaster, and that is a much bigger job than renewing the sealant.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
Why choose Mr Mastic in Sarisbury
- Fully insured
- Domestic, commercial and hotel work
- Quality sealants from Arbo and Everbuild
- Neat joints and a tidy finish
Read our cost guide or our reviews.
Common problems we fix in Sarisbury
Water gets into small cracks in the mastic and loosens it further. Windows facing the weather tend to go first.
The problems people generally mention when they call are:
- Old cement repairs round a window that have failed
- Mastic worn away on windows facing the weather
- Cracked mastic round a front door frame
- Open joints round the window box
Letting a property close to Swanwick station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Comparing quotes
- How long to leave it before use
- Which colour the sealant will be
- What product goes in the joint
- The length of the guarantee
How the job changes by surface
Period and listed homes
Materials matter on listed and conservation-area homes. Like-for-like sand mastic is generally favoured.
Stone surrounds
Stone openings are rarely perfectly straight, so the joint varies in width. Sand mastic is shaped by hand to suit.
Questions from Sarisbury
Does the coastal weather in Sarisbury affect outside sealant?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
I let a flat near Swanwick station. Can you help?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will send you a clear quote.
Can I choose the sealant colour?
We help you choose a colour that suits. The choice depends on the product the joint needs.
Can you replace silicone on a period window with sand mastic?
Yes, we do this often. The old silicone has to come out completely so the mastic beds in well.
Should I check with the council before work on a listed or conservation-area home?
Your local planning authority is the one to ask. They’ll tell you if consent is needed.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
What do you put in the joint?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference.
Is it messy?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
How we quote for sand mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The size of the job
- The product the joint needs
- Any working-time requirements on site
- The number of rooms or windows
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you’re unsure, call 0345 464 0079 or send us an email for an honest opinion and a quote.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Any access issues, like height or stairs
- Roughly how big the job is
- Any previous sealing or DIY work
- Where the job is, and your postcode
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job.
Nearby places to Sarisbury
More services for Sarisbury
What sealant work can’t fix
A few problems are outside what sealant work can do:
- Broken panes
- Masonry that needs repairing
- Timber that has rotted
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
Joints and surfaces we work on
- Period & listed homes
- Stone surrounds
- Brick reveals
- Tenement windows
- Sash and case windows
- Timber door frames
The process
All our tools and materials come with us in the van, so you don’t need to buy or prepare anything. Once we’ve agreed what’s being done, the area is protected and the work begins. Most jobs take anything from a few hours to a full day, depending on how many windows. For a job in Sarisbury, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Tell us about any water getting in
- Tell us about access, such as stairs, a lift or high-level joints
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or drop us an email and describe the job and send pictures if you have them.