Hampshire · England
Sand Mastic in Stonymarsh
Sand mastic for Stonymarsh, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps where the frame meets the masonry
- Patchy fillers round a sash window
- Mastic that needs renewing before redecorating
Sand mastic in Stonymarsh, done properly
Sand mastic doesn’t last for ever and gaps open up round the frame. Renewing it closes the gap so the surround looks right again. We work on timber door frames, period & listed homes and stone surrounds, and common reasons people get in touch are old cement repairs round a window that have failed and tired mastic found when preparing windows for paint.
Homes in small places like Stonymarsh often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
All our work is covered by a 12-month guarantee.
- Location
- Stonymarsh (SO51)
- Region
- Hampshire
- Cover
- One year on every job
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Signs you need sand mastic in Stonymarsh
Previous repairs in cement or silicone often trap water or crack away. They don’t move with the timber and we normally remove them.
Keep an eye out for these signs:
- Wind and rain getting in round a sash window
- Gaps round a timber door in stone or brick
- Tired mastic found when preparing windows for paint
- Crumbling sand mastic round a window
Letting a property close to Mottisfont & Dunbridge station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Before booking anyone
- How long to leave it before use
- Who does the work, and how experienced they are
- How hidden problems are handled
- Are they insured?
When it is not the sealant
We will always be straight with you, so here’s what sealant cannot fix:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
- Planning or listed building consent (your local planning authority decides)
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly before you book.
Surfaces we seal
- Sash and case windows
- Brick reveals
- Tenement windows
- Stone surrounds
- Period & listed homes
- Timber door frames
Why deal with it now?
An open joint round the frame lets weather in. Water can get to the frame and the masonry, so dealing with it now protects both. Older cottages and farmhouses around Stonymarsh can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
What you get with us
- Quality sealants from Arbo and Everbuild
- Rated 4.9 stars on Google
- 12-month guarantee on every job
- We leave the area clean and tidy
Read what affects the cost and what customers say.
What affects the cost of sand mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Mould in or behind the old joints
- The type of sealant required
- When we can work, for business premises
- How many areas need sealing
What you pay reflects the work, not guesswork. That is why we ask about the job first.
What to tell us for a quote
To make quoting easier, let us know:
- Photos by email, if that’s easy
- The type of property
- Where the property is
- What’s wrong with the joints now
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved and send you a clear quote.
Can I do it myself?
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.
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.
Questions from Stonymarsh
Can you help a landlord with a rental near Mottisfont & Dunbridge station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. You can ring 0345 464 0079 or email us with the details for a clear quote.
Do you cover smaller places like Stonymarsh?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Where are you based?
We work from Crawley. Our applicators cover Stonymarsh.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we’re done.
Do the sealants smell?
Possibly a little. It fades as the sealant cures.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Is it possible to take out silicone and use sand mastic instead?
Yes, we do this often. The old silicone has to come out completely so the mastic can sit properly.
Windows and doors in Stonymarsh
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. Historic houses like Mottisfont Abbey (about 0.5 miles west) are a reminder that the area around Stonymarsh has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
For an older house near a landmark such as Church of St Andrew, the joint between an old wall and a newer frame is generally the first place rain gets in.
Stonymarsh is about 4 miles north-west of Romsey, in Hampshire. Whether you’re in the middle of Stonymarsh or further out, we cover sand mastic for every kind of property. 683 places in Hampshire are on our list, large and small. There’s also a page for Southampton, about 10 miles away.
All of SO51 is covered for sand mastic, from the main roads to the quietest streets. Neighbouring places we cover for sand mastic include Mottisfont (1 mile west), Michelmersh (1 mile south-east), Kimbridge (1 mile south-west), Dunbridge (1 mile south-west) and Timsbury (1 mile south-east). Within a short drive, we also cover Winchester (9 miles east), Eastleigh (9 miles south-east), Andover (12 miles north), Totton (8 miles south), Chandler's Ford (7 miles south-east) and Hedge End (13 miles south-east).
What’s near Stonymarsh
Around Stonymarsh, our work takes us to homes and buildings near The Bear And Ragged Staff Public House, among other places. For rail, the closest station is Mottisfont & Dunbridge station, roughly 1.1 miles west of the centre. Nearby you will also find Romsey Community Hospital (3.7 miles south-east) and King Johns House (3.5 miles south). Open spaces near Stonymarsh include Emer Bog and Baddesley Common.
Nearby places to Stonymarsh
More services for Stonymarsh
How the job changes by surface
Stone surrounds
Stone openings are rarely perfectly straight, so the gap isn’t the same all the way round. Sand mastic is shaped by hand to suit.
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we will confirm access.
What we do, step by step
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The work itself takes a few hours per window, depending on the condition of the joints, including the tidy-up. Somewhere like Stonymarsh needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Before we arrive
- Let us know about earlier repairs to the joints
- Keep pets and children clear of the area while we work
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, call 0345 464 0079 or email us.