Hampshire · England
South Harewood Sand Mastic
Sand mastic in South Harewood from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Mastic round period door frames that has failed
- Old cement repairs round a window that have failed
- Crumbling sand mastic round a window
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Inspect the joints round the windows every year or so
- Avoid patching sand mastic with silicone
- Go gently near the mastic when preparing windows
- Renew mastic before redecorating the windows
Don’t touch or press the mastic while it hardens. It skins over quickly, but takes longer to harden fully.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.
Sand mastic in South Harewood
For a listed home or one in a conservation area, ask your local planning authority if consent is needed before window work. Like-for-like sand mastic is often the preferred finish. Common call-outs are for silicone on a period window that looks wrong and mastic worn away on windows facing the weather, on stone surrounds, brick reveals and period & listed homes.
Outdoor sealant needs dry, clean surfaces, so work on frames around South Harewood is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
All of our work is guaranteed for twelve months.
- Where
- South Harewood (SP11)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Questions from South Harewood
Is South Harewood in your area for sand mastic?
Yes, South Harewood is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we will give you a clear quote.
Will you come out to South Harewood?
Yes. South Harewood is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is it possible to take out silicone and use sand mastic instead?
Often, yes. With the silicone removed and the joint cleaned we point it with sand mastic.
Is it possible to paint over sand mastic?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll talk you through it.
What do you need from me for a quote?
Let us know what needs doing and where. We will ask anything else we need to know.
What is sand mastic?
Sand plus a binder based on linseed oil. It’s built up in the joint by hand and shaped to suit the surround.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Is sand mastic better than silicone for my windows?
It depends on the window. On many period windows, sand mastic looks right and suits the building, while modern frames normally get a flexible sealant.
Nearby places to South Harewood
What else we do in South Harewood
When something else is needed
New sealant can’t fix everything, and we’d rather say so up front. Sealant won’t put right:
- Planning or listed building consent (your local planning authority decides)
- Broken panes
- Masonry that needs repairing
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think.
What we seal
- Timber door frames
- Sash and case windows
- Tenement windows
- Brick reveals
- Period & listed homes
- Stone surrounds
Common problems we fix in South Harewood
Water gets into small cracks in the mastic and pushes it out. Exposed elevations usually fail first.
Any of these means the joints need attention:
- Weathered mastic on the most exposed windows
- Draughts and rain around sash boxes
- Old cement repairs round a window that have failed
- Cracked mastic round a front door frame
If you let a flat or house near Andover station, any sash windows need sound mastic to keep draughts and rain out.
Comparing quotes
- How much experience the applicator has
- What the quote includes, VAT included or not
- How the surfaces are prepared before sealing
- Whether the sealant suits the joint
How the job changes by surface
Period and listed homes
Materials matter on listed and conservation-area homes. Sand mastic is often the preferred finish.
Brick reveals
Gaps between frame and brick let in rain and draughts. Renewing the mastic closes it.
Leave it or put it right?
Not every draught comes from the sashes themselves. Gaps between the frame and the wall can be just as bad and new mastic seals them. In a small place like South Harewood, 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: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we’ll go through it with you.
Why book with us
- Arbo and Everbuild products
- 12-month guarantee on every job
- Neat joints and a tidy finish
- ARBOMaster approved applicator
Take a look at our cost guide or our reviews.
What happens on the day
Every visit runs the same way: we look at the joints together, protect the area around them, do the work and clear up. Most jobs take a few hours for a single window, longer for several. For a village or hamlet like South Harewood, 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.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
How to prepare
- Keep children and pets away from the work area
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we’re working on
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or send us an email.
Read more
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
What sand mastic looks like in South Harewood
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Wherwell Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
South Harewood is about 4 miles south-east of Andover, in Hampshire. We provide sand mastic to householders, landlords and businesses in South Harewood and the surrounding area, as part of our work across Hampshire. We cover 683 towns and villages across Hampshire, from the larger towns to small villages. For nearby work, see our Southampton page, about 18 miles away.
Here we cover the SP11 postcode area for sand mastic. Neighbouring places we cover for sand mastic include Wherwell (1 mile south-west), Wherwell Wood (2 miles west), Chilbolton (2 miles south-west), Cottonworth (2 miles south-west) and Fullerton (3 miles south-west). We also work in nearby towns such as Basingstoke (15 miles north-east), Winchester (9 miles south-east), Eastleigh (15 miles south), Andover (4 miles north-west), Chandler's Ford (13 miles south) and Romsey (13 miles south).
Local landmarks in South Harewood
The closest station to South Harewood is Andover station, roughly 4 miles north-west of the centre. Nearby you will also find Andover War Memorial Hospital (4.3 miles north-west) and Finkley Down Farm Museum (3.5 miles north-west). Open spaces near South Harewood include Mill Lake and Anton Lakes.