Hampshire · England
Sand Mastic in Nashes Green
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Nashes Green. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Crumbling sand mastic round a window
- Mastic round period door frames that has failed
- Gaps between timber frames and stone or brick
Sand mastic for homes and businesses in Nashes Green
We work across Nashes Green renewing sand mastic on sash windows and doors. Every joint is cleaned out and filled by hand for a neat, traditional finish. Typical jobs include silicone on a period window that looks wrong and old cement repairs round a window that have failed, across period & listed homes, stone surrounds and tenement windows.
Somewhere as small as Nashes Green, 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.
We guarantee the work for a year. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Nashes Green (RG25)
- Region
- Hampshire
- Cover
- One year on every job
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
When it is not the sealant
We will always be straight with you, so here’s what sealant can’t fix:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
- Sashes that need overhauling
If in doubt, call 0345 464 0079 or email us and we will say what we think.
What we seal
- Timber door frames
- Sash and case windows
- Stone surrounds
- Period & listed homes
- Brick reveals
- Tenement windows
DIY sealant or a professional job?
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Common questions in Nashes Green
Is Nashes Green within the area you cover?
Yes, Nashes Green is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you cover Nashes Green for sand mastic?
Yes. We work across London and the South East, and Nashes Green is part of that. Just call 0345 464 0079 or email us with a few details of the job.
Is it OK to seal over old sealant?
No, and we never do. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Is it possible to paint over sand mastic?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we will talk you through it.
Can you do several jobs on one visit?
Yes. More than one area can go on one quote.
Is the work guaranteed?
There’s a 12-month guarantee on every job.
How long will you be here?
Most jobs take a few hours per window, depending on the condition of the joints, including preparation and clearing up. Your quote will say how long we expect yours to take.
Can you match the sealant colour?
Generally, yes. Sealants come in white, clear, grey and other colours, and we will agree it with you first.
Towns and villages near Nashes Green
What else we do in Nashes Green
What happens if it’s left?
Filling over old, loose mastic doesn’t last. We remove the loose material first so the new mastic stays put. Where a wall is exposed, as many are in small places like Nashes Green, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
Why us?
- Neat joints and a tidy finish
- One-year guarantee on every job
- Homes, businesses and hotels
- We’re fully insured
When to call us in Nashes Green
Some old mastic was never deep enough. A thin layer does not hold well so we make sure the new mastic is the right thickness.
These are the problems we’re asked about most:
- Mastic worn away on windows facing the weather
- Wind and rain getting in round a sash window
- Tired mastic found when preparing windows for paint
- A silicone bead on a sash window that spoils the look
For an older house near a landmark such as Church of St. Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- What product goes in the joint
- When the joint can take water or movement
- Whether they seal over old material or remove it
- Whether they’re fully insured
How the visit works
Most of a good job is in the preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it usually takes a few hours per window, depending on the condition of the joints. In a small place like Nashes Green, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- 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.
How to prepare
- Move anything stored near the joints
- Tell us if parking is tricky
- Try not to wet indoor joints just before the visit
Getting a quote
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved and send you a clear quote.
Read more
How the job changes by surface
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. On listed buildings, check with your planning authority first.
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.
Keeping the joints in good condition
Good habits help new joints last longer. Our tips:
- Make sure water runs off the sill
- Avoid patching sand mastic with silicone
- Look over the window mastic once a year
- Plan mastic work ahead of painting
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
What sand mastic looks like in Nashes Green
With historic houses such as Hall Place (about 3.3 miles south) nearby, there’s older building stock in the area around Nashes Green 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 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.
For landlords with property near Alton station, any sash windows need sound mastic to keep draughts and rain out.
Nashes Green is about 5 miles north-west of Alton, in Hampshire. We provide sand mastic to homes and businesses in Nashes Green and the surrounding area, as part of our work across Hampshire. Our area takes in 683 places across Hampshire, large and small. There’s also a page for Reading, about 17 miles away.
We cover every part of RG25 for sand mastic and the streets around it. If you are just outside Nashes Green, we cover Ellisfield (2 miles west), Upton Grey (2 miles north-east), Upper Common (3 miles west), Cliddesden (3 miles north-west) and Viables (4 miles north-west). Within a short drive, we also cover Basingstoke (5 miles north-west), Farnborough (13 miles north-east), Fleet (10 miles north-east), Aldershot (12 miles east), Alton (5 miles south-east) and Petersfield (14 miles south).
Near you in Nashes Green
The closest station to Nashes Green is Alton station, about 4.7 miles south-east of the centre. Other landmarks nearby include Gliding Heritage Centre (1.4 miles south-east) and Basing House (4.6 miles north). For a walk, there’s Holybourne Hill.