Hampshire · England
Sand mastic for sash & case windows in Ashford, Hampshire
Sand mastic for Ashford and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Mastic round period door frames that has failed
- Modern sealant on a period surround
- Weathered mastic on the most exposed windows
How we handle sand mastic in Ashford
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. If you’re dealing with gaps where the frame meets the masonry and failed mastic on an exposed elevation, we can put it right, on sash and case windows, period & listed homes and brick reveals alike.
Around Ashford, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
Your job is guaranteed for a year, as with all our work.
- Location
- Ashford (SP6)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When to call us in Ashford
Previous repairs in cement or silicone often trap water or crack away. They do not suit the joint, and they normally need raking out.
The most common problems we see are:
- Modern sealant on a period surround
- Cement or filler used on old window joints that has cracked
- Cracked mastic round a front door frame
- Gaps where the frame meets the masonry
Historic houses such as Breamore House, about 3 miles north, show how far back building around Ashford goes.
Comparing quotes
- What happens if they find a problem under the old sealant
- What the cure time is
- Is the old sealant removed completely?
- How much experience the applicator has
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
The biggest DIY mistake is sealing over old sealant. 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.
How we quote for sand mastic
We don’t publish a price list. What we look at:
- How many rooms, windows or areas are involved
- The size of the job
- Whether the work is at height
- The old material and how stubborn it is
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 to tell us for a quote
You do not need to know the technical terms. It helps if you can tell us:
- If it’s domestic, commercial or a hotel
- Photos by email, if that is easy
- Any access issues, like height or stairs
- How many joints, rooms or windows are involved
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or drop us an email.
Ashford questions
Will you come out to Ashford?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you cover Ashford for sand mastic?
Yes. Our work covers London and the South East, and Ashford 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 give you a clear price.
What should I tell you?
The location, the problem and the rough size of the job. If you can, email a few photos.
Do you work for landlords and businesses?
Yes. We work for householders, landlords, letting agents, businesses and hotels in Ashford.
Can I do it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
How long does sand mastic take to go off?
It takes a while. The skin forms first, and the full set comes later, and we’ll tell you what to expect.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Where is Mr Mastic based?
Our base is Crawley. We work across South East England, London and Scotland.
Ashford homes and the weather
Historic houses like Breamore House (about 3 miles north) are a reminder that the area around Ashford has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like Fordingbridge Junior School? Then the mastic around its windows and doors needs looking after like any other building’s.
Ashford is in Hampshire. Wherever you are in the SP6 postcode area, our applicators can take on sand mastic. Across Hampshire, we cover 683 places, Ashford among them. Our Southampton page covers work nearby, about 18 miles away.
Postcode districts we cover here for sand mastic: SP6. Streets in the area include Station Road, Rookwood Gardens and Ashford Close, all of which we cover. Neighbouring places we cover for sand mastic include Sandleheath (1 mile west), Alderholt (2 miles south-west), Damerham (2 miles north-west), Rockbourne (3 miles north-west) and Broxhill (3 miles west). We also work in nearby towns such as Totton (13 miles east), Romsey (15 miles east), New Milton (14 miles south-east), Ringwood (6 miles south), Barton on Sea (14 miles south-east) and Ashley (14 miles south-east).
Landmarks near Ashford
Around Ashford, our work takes us to homes and buildings near The Burgate School and Sixth Form and The Ship Inn. Well-known places in the area include Godshill Castle Hill (2.1 miles north-east) and Fordingbridge Museum (0.7 miles east). The countryside around Ashford includes Linbrook Lake and Blashford Lakes.
Why act early in Ashford
Filling over old, loose mastic doesn’t last. We remove the loose material first so the new mastic stays put. Older cottages and farmhouses around Ashford can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Doing several joints on one visit normally makes better use of the time than several visits. You’ll get one clear quote for the whole job.
Why choose Mr Mastic in Ashford
- An ARBOMaster approved applicator
- More than 20 years in sealant work
- Homes, businesses and hotels
- Arbo and Everbuild products
See our cost guide and customer reviews.
Also near Ashford
Other services in Ashford
The process
All our tools and materials come with us in the van. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours per window, depending on the condition of the joints. For a village or hamlet like Ashford, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Mention any parking rules near the property
- Tell us about any water getting in
How to get a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we will come back to you with a quote.
Related advice
How the job changes by surface
Timber door frames
Round a period front door, sand mastic gives the right look.
Brick reveals
Sand mastic is also used where timber frames meet brick. It suits older brickwork.
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Do not run silicone over sand mastic
- Clear gutters so water doesn’t pour onto the windows
- Inspect the joints round the windows every year or so
- Plan mastic work ahead of painting
Leave the new mastic alone while it firms up. It forms a skin fairly soon but needs longer to fully harden.
Sound mastic protects the frame. Once it fails, water can sit against the timber, which can lead to rot.