Hampshire · England
Sand Mastic in Isington
Window and door surrounds in Isington need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Gaps where the frame meets the masonry
- Silicone on a period window that looks wrong
- Old sand mastic that has cracked, crumbled or fallen out
How we handle sand mastic in Isington
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. Renewing it closes the gap and tidies the surround. Common call-outs are for patchy fillers round a sash window and mastic dropping out of the joint, across tenement windows, period & listed homes and timber door frames.
Homes in small places like Isington 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.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or drop us an email.
- Where
- Isington (GU34)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Aftercare tips
After the cure time, these simple habits help:
- Find out about consent before window work on a listed home
- Clear gutters so water doesn’t pour onto the windows
- Ask a joiner to look at soft timber first
- Keep modern sealant off the mastic
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
What sand mastic looks like in Isington
With historic houses such as Farnham Castle (about 4.6 miles north-east) nearby, there’s older building stock in the area around Isington as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Binsted Church of England Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. Rented homes near Bentley (Hampshire) station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. For an older house near a landmark such as Church of the Holy Cross, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Isington is about 4 miles north-east of Alton, in Hampshire. Homes, rented property, offices and hotels in Isington is covered for sand mastic. Every job comes with our 12-month guarantee. Across Hampshire, we cover 683 places, Isington among them. Reading is on our list too, about 19 miles from Isington.
Jobs for sand mastic in GU34 is quoted and booked the same way as anywhere else. If you are just outside Isington, we cover Binsted (1 mile south), Blacknest (1 mile east), Bentley (1 mile north-east), Bucks Horn Oak (2 miles east) and Frithend (2 miles south-east). We also work in nearby towns such as Basingstoke (11 miles north-west), Farnborough (10 miles north-east), Fleet (7 miles north), Aldershot (7 miles north-east), Alton (4 miles south-west) and Petersfield (12 miles south).
Around Isington
Typical jobs here are in homes near The Star Inn and the streets around them. The nearest railway station is Bentley (Hampshire) station, roughly 0.8 miles east. Well-known places in the area include Chase Community Hospital (5 miles south) and Barley Pound (2.8 miles north-east). Green spaces nearby include Farnham Heath and Holybourne Hill.
What we do, step by step
Before we leave, we go over the finished joints with you and explain the cure time. The visit itself generally takes anything from a few hours to a full day, depending on how many windows, depending on the amount of work. For a village or hamlet like Isington, the journey is planned in advance: 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 check each window surround and the condition of the joint.
- 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.
- The finish is dressed neatly.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Mention any leaks or damp you’ve noticed
- Mention any tricky access
Getting a quote
Want a quote for sand mastic? Please phone 0345 464 0079 or email us and tell us about the job. We will explain what we’d do and give you a clear quote before work begins.
Related advice
Your questions about sand mastic in Isington
Can you do sand mastic in Isington?
Yes, Isington 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’ll send you a clear quote.
I let a flat near Bentley (Hampshire) station. Can you help?
Yes. We work for letting agents and landlords as well as householders, and several properties can go on one quote. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
What’s sand mastic made of?
A traditional pointing material made from sand and a linseed-oil-based binder, used between timber frames and stone or brick.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
How long does sand mastic take?
It depends on the size of the job, but most jobs take anything from a few hours to a full day, depending on how many windows. We’ll give you a better idea when we quote.
Is it possible to take out silicone and use sand mastic instead?
In most cases. The silicone is cut out and the joint cleaned, then point it with sand mastic.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
Do the sealants smell?
That depends on the sealant. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Surface by surface
Tenement and terrace windows
Where a building is shared, window work may involve neighbours, so check who is responsible first.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. Sand mastic seals the joint round it.
What affects the cost of sand mastic
Every job gets its own quote. This is what makes a difference:
- How easy the joints are to reach
- How much old sealant there is and how hard it is to remove
- How much there is to do
- How many rooms, windows or areas are involved
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or drop us an email and we’ll talk you through it.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Where the property is
- How many joints, rooms or windows are involved
- The type of property
- Pictures of the joints, sent by email
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, call 0345 464 0079 or drop us an email.
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
A careful DIYer can reseal a simple joint, 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.
Towns and villages near Isington
What else we do in Isington
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
We also work for property managers and facilities teams. Several sites can be quoted together, and we are fully insured.
Leave it or put it right?
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 Isington, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why book with us
- Tidy, careful work
- Experience in homes, commercial sites and hotels
- We’re fully insured
- Anti-fungal sanitary silicone in wet areas
See our cost guide and what customers say.