Hampshire · England
Sand Mastic in Bentworth
Sand mastic for Bentworth and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Wind and rain getting in round a sash window
- Gaps round a timber door in stone or brick
- Modern sealant on a period surround
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Sort the mastic before the decorators arrive
- Find out about consent before window work on a listed home
- Ask a joiner to look at soft timber first
- Leave the new mastic unpainted
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens.
Sand mastic in Bentworth, done properly
Sand mastic doesn’t last for ever, leaving gaps round the window. We rake it out and renew it so the surround looks right again. We work on timber door frames, period & listed homes and sash and case windows, and the jobs we see most are old cement repairs round a window that have failed and modern sealant on a period surround.
Around Bentworth, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
We stand behind the work with a 12-month guarantee, so you are covered after we have gone.
- Location
- Bentworth (GU34)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What else we do in Bentworth
Questions from Bentworth
Can you do sand mastic in Bentworth?
Yes, Bentworth is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll send you a clear quote.
Can you help a landlord with a rental near Alton station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in.
Should I use sand mastic or silicone?
It depends on the window. Period windows in stone or brick generally suit sand mastic, while modern frames normally get a flexible sealant.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Do the sealants smell?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
Will you leave a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Are you insured?
Yes. We are fully insured, and we’ve been doing sealant work for more than 20 years.
Windows and doors in Bentworth
With historic houses such as Hall Place (about 0.2 miles south-west) nearby, there’s older building stock in the area around Bentworth as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as St Mary's Bentworth Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s. If you live in an older home near St. Mary's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Bentworth is about 3 miles west of Alton, in Hampshire. Bentworth gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our area takes in 683 places across Hampshire, from the larger towns to small villages. Our Reading page covers work nearby, about 20 miles away.
We work across GU34 for sand mastic and the streets around it. Streets in the area include Village Street, Church Street and Drury Lane, and we cover them all. Neighbouring places we cover for sand mastic include Holt End (1 mile south-west), Thedden (1 mile south-east), Wivelrod (1 mile south-east), New Copse (1 mile south-west) and Beech (2 miles south-east). Larger places within reach include Basingstoke (8 miles north), Winchester (13 miles south-west), Farnborough (15 miles north-east), Fleet (12 miles north-east), Aldershot (14 miles north-east) and Alton (3 miles east).
Landmarks near Bentworth
Typical jobs here are in homes near The Star Inn. For rail, the closest station is Alton station, about 3.5 miles east of the centre. Nearby you’ll also find Barton Castle (3.2 miles south-west) and Gliding Heritage Centre (2.2 miles north-east). Open spaces near Bentworth include King's Hill.
What we are called out for in Bentworth
Decorating can disturb tired mastic. Many people find it crumbling when they prepare the windows.
Most people get in touch when they notice something like this:
- Mastic round period door frames that has failed
- Crumbling sand mastic round a window
- Window mastic to renew ahead of painting
- Draughts and rain around sash boxes
Letting a property close to Alton station? Then any sash windows need sound mastic to keep draughts and rain out.
Before booking anyone
- Which colour the sealant will be
- Who does the work, and how experienced they are
- How long to leave it before use
- Which sealant they’ll use, and why
How we quote for sand mastic
Jobs vary more than people expect. What affects the quote:
- Which sealant suits the joint
- When we can work, for business premises
- The old material and how stubborn it is
- Mould in or behind the old joints
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first.
Asking for a quote
To make quoting easier, let us know:
- Pictures of the joints, sent by email
- How we’d reach the joints
- Whether it has been sealed before
- Roughly how big the job is
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we will talk you through the work and send you a clear quote.
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
What the job involves on each surface
Stone surrounds
Old stone surrounds are often uneven, so the joint varies in width. We shape it by hand to follow the stone.
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair, so check who is responsible first.
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Sashes that rattle, stick or won’t open
- Decisions on consent for listed homes
- Decayed frames that need repair
If you’re not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer before you book.
Joints and surfaces we work on
- Brick reveals
- Sash and case windows
- Stone surrounds
- Timber door frames
- Period & listed homes
- Tenement windows
How the visit works
There’s no need to move everything out before we come, only the area right around the joints. Everything nearby is protected, and the job takes a few hours per window, depending on the condition of the joints in most cases. Somewhere like Bentworth needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Tell us if parking is tricky
- Keep children and pets away from the work area
Ask for a quote
Getting a quote is simple: let us know what needs doing and where. A few photos by email make the job easier to understand.