Hampshire · England
Owslebury Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Owslebury and across Hampshire. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Draughts and rain around sash boxes
- Mastic worn away on windows facing the weather
- Gaps between timber frames and stone or brick
About our sand mastic in Owslebury
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant, and we’ll talk through which suits your home. We work on stone surrounds, period & listed homes and sash and case windows, and people most often call us about draughts and rain around sash boxes and mastic worn away on windows facing the weather.
Somewhere as small as Owslebury, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Place
- Owslebury (SO21)
- Region
- Hampshire
- Cover
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, do the work and tidy away. It usually takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Owslebury, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Let us know about stairs, lifts or work at height
- Mention any parking rules near the property
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, phone 0345 464 0079 or send us an email.
Related advice
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
What affects the quote in Owslebury
There’s no set price list. What we look at:
- Working hours on commercial sites
- The product the joint needs
- Access and height
- How many areas need sealing
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins.
What to tell us for a quote
Photos help, but a description is a good start. Please mention:
- Where the job is, and your postcode
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
- Any previous sealing or DIY work
For a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You will have a clear quote before we start.
Looking after it afterwards
How long the joints last depends on use and care. We suggest:
- Leave the new mastic unpainted
- Get any rot dealt with first
- Keep sills and gutters clear so water drains away
- Go gently near the mastic when preparing windows
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Owslebury homes and the weather
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Shawford station, older sash windows in a rental need their mastic kept sound to keep the weather out. Schools such as Owslebury Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Homes close to Church of St Andrew include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Owslebury is about 4 miles south-east of Winchester, in Hampshire. We provide sand mastic to homes and businesses in Owslebury and the surrounding area. Across Hampshire, we cover 683 places, and Owslebury is one of them. There’s also a page for Southampton, about 8 miles away.
Postcode districts we cover here for sand mastic: SO21. Whether your property is on Beech Grove, Main Road and Pitcot Lane or a nearby road, our applicators can take on the job. Neighbouring places we cover for sand mastic include Owslebury Bottom (1 mile north), Baybridge (1 mile south-east), Hensting (1 mile south-west), Morestead (1 mile north) and Lane End (3 miles north-east). Larger places within reach include Winchester (4 miles north-west), Gosport (15 miles south), Eastleigh (4 miles south-west), Fareham (11 miles south), Horndean (13 miles south-east) and Totton (12 miles south-west).
Around Owslebury
Typical jobs here are in homes near Ship Inn, among other places. Owslebury’s nearest station is Shawford station, about 2.8 miles west. Other landmarks nearby include Wolvesey Castle (3.9 miles north-west) and The Gurkha Museum (3.9 miles north-west). Green spaces nearby include Twyford Down and Hockley Meadows.
Questions from Owslebury
I let a flat near Shawford station. Can you help?
Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Can you do sand mastic in Owslebury?
Yes. We work across London and the South East, and Owslebury is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you don’t need to watch us work.
Can I paint the new mastic?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Talk to us before any painting near it.
Can new sealant go over the old?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Do you guarantee sand mastic work?
All our work has a 12-month guarantee.
Is sand mastic better than silicone for my windows?
Sand mastic normally suits period timber windows best. On modern frames, we’d normally use a flexible sealant.
Can I do it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Surface by surface
Stone surrounds
Old stone surrounds are often uneven, so the gap is not the same all the way round. Sand mastic is shaped by hand to suit.
Brick reveals
Gaps between frame and brick let in rain and draughts. New mastic seals the gap.
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. Older cottages and farmhouses around Owslebury 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 we quote each one individually. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Why Owslebury customers choose us
- Every job guaranteed for a year
- 4.9 on Google from 180+ five-star reviews
- More than 20 years in sealant work
- Full insurance on every job
Take a look at how sealant jobs are priced or what customers say.