Hampshire · England
Sand mastic for sash & case windows in Borden, Hampshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Borden and across Hampshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Tired mastic found when preparing windows for paint
- Mastic worn away on windows facing the weather
- Old cement repairs round a window that have failed
Sand mastic in Borden
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On period homes, it looks right where silicone wouldn’t. Common call-outs are for open joints round the window box and mastic that needs renewing before redecorating, across brick reveals, stone surrounds and sash and case windows.
Somewhere as small as Borden, 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 ring 0345 464 0079 or send us an email.
- Where
- Borden (GU30)
- Wider area
- Hampshire
- Cover
- One year on every job
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What sand mastic looks like in Borden
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. With historic houses such as Cowdray House (about 4.4 miles south-east) nearby, there’s older building stock in the area around Borden as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
For an older house near a landmark such as Church of St Peter, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Borden is about 5 miles east of Petersfield, in Hampshire. We provide sand mastic to homes and businesses in Borden and the surrounding area, as part of our work across Hampshire. Borden is one of 683 towns and villages in Hampshire where we work for sand mastic. For nearby work, see our Portsmouth page, about 18 miles away.
Work in GU30 is quoted and booked the same way as anywhere else. We also cover the places around Borden: Trotton Marsh (1 mile east), Rogate (1 mile south-west), Chithurst (1 mile south-east), Milland (2 miles north-east) and Rake (2 miles north-west). We also work in nearby towns such as Havant (13 miles south-west), Horndean (11 miles south-west), Alton (11 miles north-west), Waterlooville (13 miles south-west), Petersfield (5 miles west) and Purbrook (14 miles south-west).
Near you in Borden
The closest station to Borden is Liss station, roughly 3.6 miles north-west of the centre. Other landmarks nearby include Midhurst Community Hospital (4.1 miles south-east). The countryside around Borden includes Wheeler's Down and Iping and Stedham Commons.
Different surfaces, different methods
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
Brick reveals
Loose mastic comes out and deep gaps are packed before the new mastic goes in.
Landlords, agents and businesses in Borden
Letting agents and landlords in Borden can book us as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
Leave it or put it right?
Cement-based fillers and modern sealants don’t always suit a period surround. Sand mastic is the like-for-like choice, which can matter on listed and conservation-area homes. Where a wall is exposed, as many are in small places like Borden, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why Borden clients choose us
- Full insurance on every job
- Every job guaranteed for a year
- ARBOMaster approved applicator
- 20+ years of sealant experience
Common questions in Borden
Will you come out to Borden?
Yes. Borden is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Borden for sand mastic?
Yes. Our work covers London and the South East, and Borden is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear price.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
How do I get a quote for sand mastic in Borden?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or send us an email with a short description of the job.
Can you seal over the old sealant?
No. The old sealant always comes out first.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Is sand mastic better than silicone for my windows?
It depends on the window. Period windows in stone or brick normally suit sand mastic, while modern frames normally get a flexible sealant.
The process
There isn’t much for you to do on the day. Show us the job and we will take it from there. The work itself takes a few hours for a single window, longer for several. Somewhere like Borden needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Clear the area around the work
- Tell us about any water getting in
- Keep pets and children clear of the area while we work
Get 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 come back to you with a quote.
Read more
Signs you need sand mastic in Borden
Over the years, sand mastic weathers. It dries out, cracks and loses its grip from the frame or the masonry.
It’s worth asking for a quote if you see:
- Mastic that needs renewing before redecorating
- Old sand mastic that has cracked, crumbled or fallen out
- Cracked mastic round a front door frame
- Cement or filler used on old window joints that has cracked
For landlords with property near Liss station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
What to look for in a quote
- Whether all the old sealant comes out first
- Whether you can choose the colour
- How the joint is cleaned and prepared
- Who does the work, and how experienced they are
Also near Borden
What else we do in Borden
What sealant work cannot fix
To be straight with you, some problems need a different trade:
- Decisions on consent for listed homes
- Sashes that rattle, stick or will not open
- Broken panes
If you are not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
What we seal
- Tenement windows
- Sash and case windows
- Period & listed homes
- Timber door frames
- Brick reveals
- Stone surrounds
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Check the mastic when you check the paintwork
- Clear gutters so water does not pour onto the windows
- Do not run silicone over sand mastic
- Sort the mastic before the decorators arrive
Make sure water drains away from the window surround. Constant wetting wears the mastic faster.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry so early renewal protects both.