Hampshire · England
Sand Mastic in Southington
Sand mastic for Southington and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Gaps between timber frames and stone or brick
- Mastic that needs renewing before redecorating
- Cement or filler used on old window joints that has cracked
Sand mastic in Southington, done properly
On many period windows, sand mastic looks right and suits the building. On modern frames we’d normally use a flexible sealant, and we’ll talk through which suits your home. We work on sash and case windows, period & listed homes and tenement windows, and the jobs we see most are gaps between timber frames and stone or brick and patchy fillers round a sash window.
Somewhere as small as Southington, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Where
- Southington (RG25)
- Region
- Hampshire
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Surface by surface
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It gives a traditional finish.
Period and listed homes
Many older homes were built with sand mastic round the windows. On listed buildings, check with your planning authority first.
The process
A visit follows a simple pattern: we look at the joints together, protect the area around them, carry out the job and clear up. Most jobs take a few hours per window, depending on the condition of the joints. For a village or hamlet like Southington, the journey is planned in advance: 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 check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Tell us about any water getting in
- Let us know about stairs, lifts or work at height
- Clear the area around the work
Ask for a quote
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job, and we will come back to you with a quote.
Read more
Leave it or put it right?
Not every filler suits an old window surround. Sand mastic is the like-for-like choice, which can matter on listed and conservation-area homes. In a small place like Southington, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
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. You’ll have a clear quote before any work starts.
Why Southington customers choose us
- We’re fully insured
- An ARBOMaster approved applicator
- 180+ five-star Google reviews
- Anti-fungal sanitary silicone in wet areas
Read our cost guide or what customers say.
Questions from Southington
Do you cover smaller places like Southington?
Yes. Southington is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Overton station. Can you help?
Yes, we work for landlords and agents. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and we’ll quote it together.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Where do you work from?
Our base is Crawley. We work across South East England, London and Scotland.
Are you ARBOMaster approved?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Is it possible to take out silicone and use sand mastic instead?
Yes. The silicone is cut out and the joint cleaned before the sand mastic goes in.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. If you are redecorating the window, ask us first and we will advise.
How we quote for sand mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Which sealant suits the joint
- Working hours on commercial sites
- Any mould that needs treating
- Whether old sealant or filler has to be cut out
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or email us.
Asking for a quote
You do not need to know the technical terms. Just tell us:
- Pictures of the joints, sent by email
- Any previous sealing or DIY work
- Any access issues, like height or stairs
- Whether it’s a home or a business
Every job is quoted individually. Just phone 0345 464 0079 or email us with the details.
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Inspect the joints round the windows every year or so
- Ask the planning authority about consent for listed or conservation-area homes
- Avoid heavy scraping on the mastic joint
- Have rotten timber repaired before new mastic goes in
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber, which can lead to rot.
Towns and villages near Southington
Also in Southington
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
Southington homes and the weather
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Overton Church of England Primary School? Then 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 Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For landlords with property near Overton station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Southington is about 8 miles west of Basingstoke, in Hampshire. From the centre of Southington to the outskirts, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Across Hampshire, we cover 683 places, and Southington is one of them. Our Reading page covers work nearby (19 miles or so).
Our applicators cover all of RG25 for sand mastic. You’ll find streets such as Vinns Lane, London Road and Dellands Lane, all of which we cover. Other places close to Southington include Overton (1 mile east), Quidhampton (1 mile north-east), Laverstoke (1 mile south-west), Freefolk (1 mile west) and Wells-in-the-Field (2 miles west). Larger places within reach include Basingstoke (8 miles east), Winchester (13 miles south), Andover (9 miles west), Alton (14 miles south-east), Tadley (10 miles north-east) and Hook (14 miles east).
Landmarks near Southington
In Southington, that means homes and buildings near The Greyhound pub, among other places. Southington’s nearest station is Overton station, roughly 1.1 miles north-east. Green spaces nearby include Ladle Hill.
Landlords, agents and businesses in Southington
Housing providers, facilities teams and property managers book us too in Southington and across Hampshire. We can quote a run of properties together, and we’re fully insured.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.