Hampshire · England
Sand mastic for sash & case windows in Finkley, Hampshire
Sand mastic for Finkley, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Modern sealant on a period surround
- Window mastic to renew ahead of painting
- Failed mastic on an exposed elevation
Sand mastic in Finkley, done properly
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. If you have patchy fillers round a sash window and failed mastic on an exposed elevation, we can put it right.
Mastic can only go onto a dry, clean joint, so window work in Finkley is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
The work is covered for a year after we finish. If anything is not right with it, call 0345 464 0079 or email us.
- Where
- Finkley (SP11)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What affects the quote in Finkley
Every job gets its own quote. This is what makes a difference:
- Any mould that needs treating
- The old material and how stubborn it is
- Working hours on commercial sites
- Access and height
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.
What we need to know
When you contact us, these details help:
- What the problem is, such as mould, gaps, leaks or cracking
- Roughly how big the job is
- Photos by email, if that’s easy
- Whether it’s a home or a business
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, call 0345 464 0079 or send us an email.
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Check the mastic when you check the paintwork
- Have rotten timber repaired before new mastic goes in
- Clear gutters so water does not pour onto the windows
- Ask us before painting near the mastic
When preparing windows for paint, take care around the mastic. Hard scraping can loosen it.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
Sand mastic in Finkley: local notes
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For an older house near a landmark such as Christ Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Schools such as Smannell and Enham Church of England (Aided) Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Finkley is about 2 miles north-east of Andover, in Hampshire. If you need sand mastic in Finkley, please phone 0345 464 0079 or send us an email for a quick quote. We cover Hampshire from our Crawley base, Finkley included. 683 places in Hampshire are on our list, large and small. Our Southampton page covers work nearby (22 miles or so).
Jobs for sand mastic in SP11 works the same way as everywhere else we cover. If you are just outside Finkley, we cover Smannell (1 mile north-west), Finkley Down (1 mile south), Picket Piece (1 mile south-east), East Anton (1 mile south-west) and Little London (1 mile north-west). We also work in nearby towns such as Basingstoke (15 miles east), Winchester (13 miles south-east), Hyde (13 miles south-east), Tidworth (9 miles west), Weeke (12 miles south-east) and Kempshott (13 miles east).
Local landmarks in Finkley
Typical jobs here are in homes near The Oak pub and Winton Community Academy and the streets around them. The closest station to Finkley is Andover station, roughly 2.4 miles south-west of the centre. A little further out are Finkley Down Farm Museum (0.8 miles south) and Andover War Memorial Hospital (2.4 miles south-west). Open spaces near Finkley include Mill Lake and Anton Lakes.
Common problems we fix in Finkley
Sand mastic slowly weathers. It hardens, cracks and starts to come away from the frame or the masonry.
Look out for these signs:
- Window mastic to renew ahead of painting
- Gaps round a timber door in stone or brick
- Failed mastic on an exposed elevation
- Gaps where the frame meets the masonry
For landlords with property near Andover station, older sash windows in a rental need their mastic kept sound to keep the weather out.
What to look for in a quote
- The length of the guarantee
- Which colour the sealant will be
- Who turns up on the day
- Is VAT in the price?
Places near Finkley
Also in Finkley
Common questions in Finkley
Is Finkley within the area you cover?
Yes, Finkley 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.
I let a flat near Andover station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
What information do you need?
Only a few details: the address or postcode, what’s wrong and any access issues. Then phone 0345 464 0079 or drop us an email.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we will explain our choice.
How long does the job take?
Typically it takes anything from a few hours to a full day, depending on how many windows. Bigger jobs take longer, and we will tell you how long to expect.
How long does sand mastic take to harden?
A skin forms quite soon, but full hardening takes longer. We will tell you what to expect for your job.
Is it OK to seal over old sealant?
No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Can you quote for more than one area?
Yes. Just list everything you need.
How it works
There isn’t much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes a few hours per window, depending on the condition of the joints from start to finish. Somewhere like Finkley needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
- Let us know about stairs, lifts or work at height
How to get a quote
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or send us an email.
Advice
Surface by surface
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
Stone surrounds
Stone surrounds suit sand mastic well. It finishes to look like part of the surround.
When it isn’t the sealant
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Putty and glazing repairs
- Decisions on consent for listed homes
- Sash cords, weights and draught-proofing of the sashes
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly before booking.
Surfaces we seal
- Period & listed homes
- Sash and case windows
- Timber door frames
- Tenement windows
- Stone surrounds
- Brick reveals