Hampshire · England
Sand Mastic in Stonehills
Sand mastic across Stonehills and nearby, with every bit of old sealant taken out first and a one-year guarantee.
- Gaps where the frame meets the masonry
- Modern sealant on a period surround
- Mastic dropping out of the joint
FAQs for Stonehills
Can you help a landlord with a rental near Hamble station?
Yes, we work for landlords and letting agents. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Will you come out to Stonehills?
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.
How long will you be here?
Typically it takes anything from a few hours to a full day, depending on how many windows. Larger jobs naturally take longer, and we will tell you how long to expect.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll advise.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and we’ll quote it together.
Is sand mastic better than silicone for my windows?
For period timber windows in stone or brick, sand mastic is often the better fit. On modern frames, we’d normally use a flexible sealant.
How we handle sand mastic in Stonehills
Traditional burnt sand mastic blends with stone and brick surrounds. It suits period and listed homes, where modern sealant can look out of place. If you have old sand mastic that has cracked, crumbled or fallen out and window mastic to renew ahead of painting, we can put it right, on tenement windows, timber door frames and sash and case windows alike.
Mastic can only go onto a dry, clean joint, so window work in Stonehills is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Stonehills (SO45)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When to call us in Stonehills
Previous repairs in cement or silicone often trap water or crack away. They do not suit the joint and we normally remove them.
The problems people generally mention when they call include:
- Modern sealant on a period surround
- Draughty sash windows at the surround
- Gaps where the frame meets the masonry
- Cement or filler used on old window joints that has cracked
For landlords with property near Hamble station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Comparing quotes
- What insurance they hold
- How the colour is chosen
- How hidden problems are handled
- Whether VAT is included
When it isn’t the sealant
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Sashes that need overhauling
- Decisions on consent for listed homes
If in doubt, call 0345 464 0079 or email us and we’ll say what we think.
Where we work in Stonehills
- Brick reveals
- Stone surrounds
- Tenement windows
- Period & listed homes
- Sash and case windows
- Timber door frames
How it works
All our tools and materials come with us in the van. After a quick look at the joints together, the area is protected and the work begins. It normally takes anything from a few hours to a full day, depending on how many windows. In a small place like Stonehills, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- The finish is dressed neatly.
How to prepare
- Mention any leaks or damp you’ve noticed
- Plan for the work area to be out of bounds to pets and children
- Let us know about stairs, lifts or work at height
Ask for a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. Photos by email help us understand the job, and we’ll take it from there.
Related advice
Landlords, agents and businesses in Stonehills
We work for landlords and agents as well as householders. Resealing between tenancies keeps a property looking cared for.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Why deal with it now?
Filling over old, loose mastic does not last. We remove the loose material first so the new mastic stays put. In a small place like Stonehills, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Ask us for a quote and we’ll explain what it covers.
Why us?
- 180+ five-star Google reviews
- Anti-fungal silicone where joints get wet
- ARBOMaster approved applicator
- We never seal over old sealant
Read our cost guide or customer reviews.
Different surfaces, different methods
Sash and case windows
Most of our sand mastic work is on sash windows. We renew the mastic round each box.
Tenement and terrace windows
Where a building is shared, window work may involve neighbours, so check who is responsible first.
Should I try it myself first?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
Sand mastic in Stonehills: local notes
Stonehills is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. Historic houses like Beaulieu Palace House (about 4.6 miles west) are a reminder that the area around Stonehills 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.
In the older streets around Church of All Saints, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you look after a building such as Fawley Infant School, larger buildings have plenty of frames, and the mastic around each one ages.
Stonehills is about 4 miles south-east of Hythe, in Hampshire. For sand mastic in and around Stonehills, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We’re based in Crawley and cover Hampshire. Across Hampshire, we cover 683 places, and Stonehills is one of them. We also work in Southampton, around 7 miles away.
We work across the SO45 postcode area for sand mastic. You will find streets such as Stonehills and Fawley Bypass, all of which we cover. Neighbouring places we cover for sand mastic include Ashlett (1 mile north-east), Fawley (1 mile north-west), Sprat's Down (1 mile south), Calshot (1 mile south-east) and Blackfield (1 mile south-west). Larger places within reach include Gosport (8 miles east), Eastleigh (10 miles north), Fareham (7 miles east), Totton (10 miles north-west), Chandler's Ford (11 miles north) and Hedge End (7 miles north).
Landmarks near Stonehills
Around Stonehills, our work takes us to homes and buildings near Falcon Hotel and The New Forest Academy, among other places. The closest station to Stonehills is Hamble station, roughly 3.3 miles north. Nearby you’ll also find Calshot Castle (1.6 miles east) and Coldeast (4.1 miles north-east). For a walk, there’s Mercury Marshes.