Hampshire · England
Sand Mastic in South Ham
We cover South Ham for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Crumbling sand mastic round a window
- A silicone bead on a sash window that spoils the look
- Draughts and rain around sash boxes
When it isn’t the sealant
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant will not put right:
- Damaged stone surrounds
- Cracked or broken glass
- Sashes that rattle, stick or won’t open
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Timber door frames
- Brick reveals
- Sash and case windows
- Tenement windows
- Period & listed homes
- Stone surrounds
Sand mastic for homes and businesses in South Ham
We renew sand mastic around sash windows and doors in stone and brick. The old mastic is raked out, and new mastic is applied and shaped by hand. We work on timber door frames, tenement windows and sash and case windows, and the jobs we see most are draughty sash windows at the surround and window mastic to renew ahead of painting.
In a smaller place like South Ham, some walls face open ground and catch the full force of the weather. That is hard on the mastic around frames and sills.
All our work is covered by our 12-month guarantee.
- Place
- South Ham (RG22, RG21, RG23)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Sand mastic in South Ham: local notes
Historic houses like The Vyne (about 3.5 miles north) are a reminder that the area around South Ham has older buildings as well as new. 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. 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.
Rented homes near Basingstoke station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out. If you live in an older home near Saint Peter's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
South Ham is about 1 mile south-west of Basingstoke, in Hampshire. Homes, rented property, offices and hotels in South Ham can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Our area takes in 683 places across Hampshire, large and small. Our Reading page covers work nearby.
Work in RG22, RG21 and RG23 works the same way as everywhere else we cover. Whether your property is on Pheby Road, Wella Road and Lennox Road or a nearby road, our applicators can take on the job. If you’re just outside South Ham, we cover Brighton Hill (1 mile south), Basingstoke (1 mile north-east), Winklebury (1 mile north-west), Buckskin (1 mile west) and Worting (1 mile west). Larger places within reach include Farnborough (15 miles east), Fleet (12 miles east), Aldershot (15 miles east), Alton (10 miles south-east), Yateley (13 miles north-east) and Tadley (7 miles north).
Near you in South Ham
We work in homes and buildings around Aldworth School, Coppice Spring School and Eastrop Park. For rail, the closest station is Basingstoke station, about 1.2 miles north-east. A little further out are Basingstoke and North Hampshire Hospital (1.5 miles north) and Basing House (2.7 miles east). Green spaces nearby include Farleigh Hill and Daneshill Park Woods.
Leave it or put it right?
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in, and renewing the mastic closes them. Around South Ham, water from a failed joint in an older home can soak into timber and plaster, and that’s a much bigger job than renewing the sealant.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Why South Ham customers choose us
- Sanitary silicone with an anti-fungal additive in wet areas
- Trusted Arbo and Everbuild sealants
- 20+ years of sealant experience
- Approved under the ARBOMaster scheme
Read what affects the cost or what customers say.
Signs you need sand mastic in South Ham
Over the years, sand mastic weathers. It hardens, cracks and starts to come away from the frame or the masonry.
Keep an eye out for any of the following:
- A silicone bead on a sash window that spoils the look
- Draughty sash windows at the surround
- Crumbling sand mastic round a window
- Gaps round a timber door in stone or brick
Schools such as St Anne's Catholic Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Comparing quotes
- How long the guarantee is
- Are they insured?
- How the surfaces are prepared before sealing
- How the colour is chosen
Towns and villages near South Ham
Also in South Ham
What the job involves on each surface
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It gives a traditional finish.
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We work on single windows or whole elevations.
Quotes for sand mastic in South Ham
You’ll get a clear quote before any work starts. It takes into account:
- The size of the job
- The type of sealant required
- Whether old sealant or filler has to be cut out
- Any mould that needs treating
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Helping us quote
Before you ask for a quote, have a think about:
- Whether it has been sealed before
- The problem you’ve noticed
- A few pictures by email, if you can
- The rough size of the job
Want a quote for sand mastic? Please ring 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
South Ham questions
Can you help a landlord with a rental near Basingstoke station?
Yes. We work for landlords and agents as well as householders. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear price.
Is South Ham in your area for sand mastic?
Yes, South Ham is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear price.
Can you replace silicone on a period window with sand mastic?
Yes. We remove the silicone and clean the joint before the sand mastic goes in.
Is there any odour?
It depends on the product. Some smell for a while, some hardly at all.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses.
Do I need to be at home?
It depends on the job. For work indoors, someone needs to let us in, and for outside work we will agree access with you when we book.
How do I get a quote for sand mastic in South Ham?
Every job is different, so each one gets its own quote. For a quick quote, ring 0345 464 0079 or email us and tell us what needs doing and where.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we’ll advise.
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes anything from a few hours to a full day, depending on how many windows. For a job in South Ham, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- Mention any tricky access
- Where the joints are inside, avoid wetting them before we arrive
- Mention if the joints have been sealed before
Get a quote
We don’t publish a price list. Instead, we give you a clear quote for your job. To arrange one, call 0345 464 0079 or send us an email.