Hampshire · England
Sand mastic for sash & case windows in Upper Clatford, Hampshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Upper Clatford, backed by a 12-month guarantee. Call for a quick quote.
- Mastic round period door frames that has failed
- Modern sealant on a period surround
- Mastic worn away on windows facing the weather
Leave it or put it right?
Not every filler suits an old window surround. Sand mastic is the like-for-like choice, which can matter on listed and conservation-area homes. Older cottages and farmhouses around Upper Clatford can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, call 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
What you get with us
- A 12-month guarantee on all work
- Fully insured
- 20+ years of sealant experience
- Anti-fungal sanitary silicone in wet areas
See what affects the cost and what customers say.
How we handle sand mastic in Upper Clatford
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. If you have wind and rain getting in round a sash window and modern sealant on a period surround, we can help, on period & listed homes, timber door frames and brick reveals alike.
Outdoor sealant needs dry, clean surfaces, so work on frames around Upper Clatford is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Place
- Upper Clatford (SP11)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Putty and glazing repairs
- Timber that has rotted
- Decisions on consent for listed homes
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think before booking.
Joints and surfaces we work on
- Tenement windows
- Brick reveals
- Sash and case windows
- Stone surrounds
- Period & listed homes
- Timber door frames
Looking after it afterwards
So the new joints stay in good condition:
- Check the mastic when you check the paintwork
- Go gently near the mastic when preparing windows
- Do not paint over the new mastic
- Keep sills and gutters clear so water drains away
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.
What affects the quote in Upper Clatford
The price is agreed before any work begins. It takes into account:
- Whether there’s mould to deal with
- How many areas need sealing
- Which sealant suits the joint
- How much old sealant there is and how hard it is to remove
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’ll go through it with you.
Asking for a quote
To help us quote quickly, please include:
- The address or postcode of the job
- Any access issues, like height or stairs
- The rough size of the job
- Photos by email, if that is easy
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
Towns and villages near Upper Clatford
More services for Upper Clatford
What happens on the day
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it generally takes anything from a few hours to a full day, depending on how many windows. In a small place like Upper Clatford, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- On commercial sites, let us know about site rules
- Tell us if parking is tricky
Ask for a quote
We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or send us an email.
Read more
When to call us in Upper Clatford
Some old mastic was never deep enough. A thin layer doesn’t hold well, which is why we pack deep voids first and get the depth right.
Look out for any of the following:
- Gaps where the frame meets the masonry
- Old cement repairs round a window that have failed
- Silicone on a period window that looks wrong
- Mastic dropping out of the joint
For landlords with property near Andover station, any sash windows need sound mastic to keep draughts and rain out.
Questions to ask before you book
- What preparation is included
- Are they insured?
- What happens if the job turns out different
- How long to leave it before use
Sand mastic in Upper Clatford: local notes
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as Church of All Saints, frames set in older brick or stone need a sealant that suits the wall as well as the frame. For site and facilities teams at buildings such as Balksbury Junior School, larger buildings have plenty of frames, and the mastic around each one ages.
Upper Clatford is about 1 mile south-west of Andover, in Hampshire. Upper Clatford gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our Hampshire coverage runs to 683 places, and Upper Clatford is one of them. Our Southampton page covers work nearby, about 20 miles away.
Here we cover the SP11 postcode area for sand mastic. If you need sand mastic at a property on Sam Whites Hill, Valley Rise and Above Town or a nearby road, we can help. Nearby, we also carry out sand mastic in Goodworth Clatford (1 mile south), Wherwell Wood (2 miles south-east), Wherwell (3 miles south-east), Cottonworth (3 miles south-east) and Fullerton (3 miles south-east). Within a short drive, we also cover Winchester (12 miles south-east), Chandler's Ford (15 miles south), Romsey (14 miles south), Hyde (12 miles south-east), Tidworth (8 miles north-west) and Weeke (11 miles south-east).
What’s near Upper Clatford
Locally, jobs take us to homes and businesses close to John Hanson Community School, among other places. The nearest railway station is Andover station, about 1.3 miles north. A little further out are Andover Museum (1.5 miles north-east) and Andover War Memorial Hospital (1.6 miles north). Green spaces nearby include Mill Lake and Anton Lakes.
Questions from Upper Clatford
Is Upper Clatford in your area for sand mastic?
Yes. We work across London and the South East, and Upper Clatford is part of that. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll send you a clear quote.
Can you help a landlord with a rental near Andover station?
Yes, we work for landlords and letting agents. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before we start.
Can new sealant go over the old?
No, because it fails. The old sealant always comes out first.
Do you take out the old sealant first?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Upper Clatford.
What exactly is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.
Should I use sand mastic or silicone?
We’ll help you decide. Sand mastic suits many period homes, and modern sealants suit newer frames.
Surface by surface
Stone surrounds
The stone is treated with care while raking out the old mastic.
Timber door frames
Round a period front door, sand mastic gives the right look.