Hampshire · England
Andover Down Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Andover Down, backed by a one-year guarantee. Call for a quick quote.
- Modern sealant on a period surround
- Mastic dropping out of the joint
- Mastic worn away on windows facing the weather
Sand mastic in Andover Down, done properly
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, the joint is prepared and new mastic is shaped by hand. We work on stone surrounds, sash and case windows and period & listed homes, and the jobs we see most are modern sealant on a period surround and old cement repairs round a window that have failed.
Homes in small places like Andover Down often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
Each job carries a 12-month guarantee.
- Where
- Andover Down (SP11)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What we do, step by step
Good joint work is mostly preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it generally takes anything from a few hours to a full day, depending on how many windows. Somewhere like Andover Down needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided 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 earlier repairs to the joints
- Tell us if parking is tricky
- Keep children and pets away from the work area
How to get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To get started, ring 0345 464 0079 or email us.
Read more
Towns and villages near Andover Down
What else we do in Andover Down
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Surface by surface
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. We renew it the same way as on windows.
What affects the quote in Andover Down
Call for a quick quote. The main things that affect it are:
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
- The amount of work
- Mould in or behind the old joints
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts.
What we need to know
To make quoting easier, let us know:
- The address or postcode of the job
- Whether it’s a home or a business
- A few pictures by email, if you can
- What the problem is, such as mould, gaps, leaks or cracking
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you’re ready, phone 0345 464 0079 or drop us an email.
Windows and doors in Andover Down
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.
For site and facilities teams at buildings such as Pilgrims' Cross CofE Aided Primary School, larger buildings have plenty of frames, and the mastic around each one ages. Rented homes near Andover station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Andover Down is about 2 miles east of Andover, in Hampshire. We carry out sand mastic for homes and businesses in Andover Down, as part of our work across Hampshire. Andover Down is one of 683 towns and villages in Hampshire where we work. Our Southampton page covers work nearby.
Postcode districts we cover here for sand mastic: SP11. If you need sand mastic at a property on London Road and The Middleway or a nearby road, our applicators can take on the job. We also cover the places around Andover Down: Picket Piece (1 mile north), Finkley Down (1 mile north-west), Picket Twenty (1 mile south-west), Finkley (1 mile north-west) and East Anton (2 miles north-west). Within a short drive, we also cover Basingstoke (15 miles east), Winchester (12 miles south-east), Romsey (15 miles south), Hyde (11 miles south-east), Tidworth (10 miles west) and Weeke (11 miles south-east).
Near you in Andover Down
Typical jobs here are in homes near Winton Community Academy and Winton Community Academy and the streets around them. Andover Down’s nearest station is Andover station, roughly 2.6 miles west of the centre. Well-known places in the area include Andover War Memorial Hospital (2.6 miles west) and Finkley Down Farm Museum (1 mile north-west). Open spaces near Andover Down include Mill Lake and Anton Lakes.
Aftercare tips
Looking after new joints is easy:
- Make sure water runs off the sill
- Plan mastic work ahead of painting
- Have rotten timber repaired before new mastic goes in
- Ask the planning authority about consent for listed or conservation-area homes
Do not run silicone over the new mastic. If anything cracks, get it looked at before trying a quick fix.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
We work for letting agents and landlords as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
What we can’t put right
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Sashes that need overhauling
- Broken panes
If you’re not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Surfaces we seal
- Stone surrounds
- Brick reveals
- Sash and case windows
- Period & listed homes
- Tenement windows
- Timber door frames
Common questions in Andover Down
Is Andover Down in your area for sand mastic?
Yes, Andover Down is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or email us with a few details of the job.
I let a flat near Andover station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners. Just ring 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear quote.
Do you guarantee sand mastic work?
All our work has a 12-month guarantee, and we are fully insured.
Can new sealant go over the old?
No. We remove every bit of old sealant first, so the new sealant bonds properly.
Is it messy?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is generally more efficient.
Do I need to be at home?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Where are you based?
We are based in Crawley, and we cover South East England, London and all of Scotland.