Hampshire · England
Sand mastic for sash & case windows in St Mary Bourne, Hampshire
Sand mastic in St Mary Bourne from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Cement or filler used on old window joints that has cracked
- Old sand mastic that has cracked, crumbled or fallen out
- Mastic worn away on windows facing the weather
Different surfaces, different methods
Sash and case windows
Sash windows are where we do most sand mastic work. Each joint round the box is raked out and renewed.
Tenement and terrace windows
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.
Sand mastic in St Mary Bourne, done properly
Sand mastic doesn’t last for ever, leaving gaps round the window. We rake it out and renew it and tidies the surround. If you’re dealing with tired mastic found when preparing windows for paint and weathered mastic on the most exposed windows, we can help, on period & listed homes, timber door frames and stone surrounds alike.
Outdoor sealant needs dry, clean surfaces, so work on frames around St Mary Bourne is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Big or small, it’s backed by our 12-month guarantee in St Mary Bourne and across Hampshire.
- Where
- St Mary Bourne (SP11)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
When to call us in St Mary Bourne
Scraping and sanding before painting can loosen old mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
People normally contact us when they notice one of these:
- Wind and rain getting in round a sash window
- Mastic dropping out of the joint
- Open joints round the window box
- Mastic round period door frames that has failed
Homes close to Church of St Peter include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Questions to ask before you book
- What product goes in the joint
- Whether they seal over old material or remove it
- What the cure time is
- Who turns up on the day
Landlord and commercial work in St Mary Bourne
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
We work for landlords and agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
DIY versus a professional finish
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Your questions about sand mastic in St Mary Bourne
Is St Mary Bourne in your area for sand mastic?
Yes, St Mary Bourne is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
Is St Mary Bourne within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
When will the new mastic be hard?
A skin forms quite soon, but full hardening takes longer. We’ll explain what to expect before we leave.
How long does sand mastic take?
That depends on the amount of work, but most jobs take a few hours per window, depending on the condition of the joints. We will give you a better idea when we quote.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Why it’s worth doing now in St Mary Bourne
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic will not stop the gaps and traditional guidance is to leave the new mastic unpainted. Where a wall is exposed, as many are in small places like St Mary Bourne, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Why choose Mr Mastic in St Mary Bourne
- Rated 4.9 stars on Google
- A 12-month guarantee on all work
- Quality sealants from Arbo and Everbuild
- Anti-fungal silicone where joints get wet
See what affects the cost or our reviews.
What affects the quote in St Mary Bourne
Call for a quick quote. What matters most is:
- Whether old sealant or filler has to be cut out
- Working hours on commercial sites
- The product the joint needs
- Mould in or behind the old joints
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts.
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 previous sealing or DIY work
- How many joints, rooms or windows are involved
- How we’d reach the joints
- Photos by email, if that’s easy
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job, and we’ll come back to you with a quote.
St Mary Bourne homes and the weather
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Managing a site like St Mary Bourne Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages. If you let a flat or house near Whitchurch (Hampshire) station, older sash windows in a rental need their mastic kept sound to keep the weather out.
St Mary Bourne is about 5 miles north-east of Andover, in Hampshire. Wherever you are in the SP11 postcode area, we cover sand mastic for homes and businesses. Our Hampshire coverage runs to 683 places, St Mary Bourne among them. For nearby work, see our Southampton page (23 miles or so).
Work in SP11 works the same way as everywhere else we cover. Whether your property is on Spring Hill Lane, Springhill and Bells Meadow or a nearby road, we can help. Neighbouring places we cover for sand mastic include Binley (2 miles north), Wadwick (2 miles north-east), Hurstbourne Priors (3 miles south), Cole Henley (3 miles east) and Whitchurch (3 miles south-east). Within a short drive, we also cover Basingstoke (13 miles east), Winchester (14 miles south), Andover (5 miles south-west), Tadley (13 miles north-east), Hyde (13 miles south) and Popley (14 miles east).
What’s near St Mary Bourne
Around St Mary Bourne, our work takes us to homes and buildings near Coronation Arms, among other places. For rail, the closest station is Whitchurch (Hampshire) station, about 2.9 miles south-east of the centre. Nearby you will also find Finkley Down Farm Museum (3.2 miles south-west) and Andover War Memorial Hospital (4.9 miles south-west). The countryside around St Mary Bourne includes Sidown Hill and Anton Lakes.
The process
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. It normally takes a few hours for a single window, longer for several. Somewhere like St Mary Bourne needs a little journey planning: 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.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
How to prepare
- Let us know about earlier repairs to the joints
- Where the joints are inside, avoid wetting them before we arrive
- On commercial sites, let us know about site rules
Getting a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.