Hampshire · England
Sand mastic for sash & case windows in Horsebridge, Hampshire
Window and door surrounds in Horsebridge need attention? We remove the old material, prepare the joints and seal them properly.
- Draughts and rain around sash boxes
- Mastic round period door frames that has failed
- Modern sealant on a period surround
Common questions in Horsebridge
Is Horsebridge in your area for sand mastic?
Yes, Horsebridge 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 Horsebridge within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do I have to be there?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you do not need to watch us work.
What is sand mastic?
It’s a mix of sand and a linseed-oil-based binder. It’s applied by hand and shaped to suit the surround.
Is sand mastic better than silicone for my windows?
Sand mastic normally suits period timber windows best. Modern frames normally suit a flexible sealant, and we will explain why.
Should I check with the council before work on a listed or conservation-area home?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like but the decision is theirs.
Can landlords and businesses book you?
Yes. As well as householders, we work for landlords, agents, businesses and hotels across Hampshire.
How long does the job take?
Typically it takes anything from a few hours to a full day, depending on how many windows. Bigger jobs take longer, and we’ll tell you how long to expect.
Sand mastic in Horsebridge
A silicone bead around a sash window can look out of place and isn’t always the right material. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. We work on brick reveals, tenement windows and stone surrounds, and the jobs we see most are tired mastic found when preparing windows for paint and draughts and rain around sash boxes.
Somewhere as small as Horsebridge, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
You’re covered for a year from the day we finish. If anything is not right with it, ring 0345 464 0079 or email us.
- Place
- Horsebridge (SO20)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Towns and villages near Horsebridge
Also in Horsebridge
What the job involves on each surface
Stone surrounds
We take care not to mark the stone when the old mastic comes out.
Sash and case windows
The mastic round a sash window is on show, so a neat, even finish matters.
Sand mastic in Horsebridge: local notes
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Mottisfont Abbey (about 2.5 miles south-west) are a reminder that the area around Horsebridge 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 St James, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Rented homes near Mottisfont & Dunbridge station change hands often, and any sash windows need sound mastic to keep draughts and rain out.
Horsebridge is about 5 miles north of Romsey, in Hampshire. Our applicators cover sand mastic for homeowners, landlords and businesses in Horsebridge. Horsebridge is one of 683 towns and villages in Hampshire where we work for sand mastic. Southampton is on our list too, around 12 miles away.
Work in SO20 is quoted and booked the same way as anywhere else. Other places close to Horsebridge include Houghton (1 mile north-west), Stonymarsh (2 miles south), Mottisfont (3 miles south-west), Michelmersh (3 miles south) and Broughton (3 miles north-west). Further out, we also cover Winchester (8 miles east), Eastleigh (10 miles south-east), Andover (10 miles north), Totton (11 miles south), Chandler's Ford (8 miles south-east) and Hedge End (14 miles south-east).
Around Horsebridge
Around Horsebridge, our work takes us to homes and buildings near John o' Gaunt pub. The nearest railway station is Mottisfont & Dunbridge station, about 3.2 miles south-west of the centre. A little further out are Romsey Community Hospital (5.6 miles south).
Aftercare tips
Aftercare is simple:
- Go gently near the mastic when preparing windows
- Find out about consent before window work on a listed home
- Ask a joiner to look at soft timber first
- Clear gutters so water does not pour onto the windows
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
When something else is needed
In fairness, there are a few things sealant will not fix:
- Crumbling stone or brickwork round the window
- Whether work needs listed building consent
- Broken panes
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
Surfaces we seal
- Timber door frames
- Tenement windows
- Brick reveals
- Period & listed homes
- Stone surrounds
- Sash and case windows
Work for landlords, hotels and businesses
If you manage several properties in or around Horsebridge, several properties can be quoted together. Send us the addresses and the work at each.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Signs you need sand mastic in Horsebridge
Shallow joints are a common cause. Mastic that is too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
Signs it’s time to call us include:
- Wind and rain getting in round a sash window
- Weathered mastic on the most exposed windows
- Window mastic to renew ahead of painting
- Old sand mastic that has cracked, crumbled or fallen out
Managing a site like King's Somborne Church of England Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- Whether all the old sealant comes out first
- What happens if they find a problem under the old sealant
- What preparation is included
- Whether you can choose the colour
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
What we do, step by step
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for a single window, longer for several. Somewhere like Horsebridge 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.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- Large voids are packed out first, so the mastic isn’t too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Let us know about stairs, lifts or work at height
- Keep children and pets away from the work area
Getting a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you are ready, ring 0345 464 0079 or email us.