Hampshire · England
Sand mastic for sash & case windows in Easton, Hampshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Easton, with a one-year guarantee on every job. Ask us for a quote.
- Cement or filler used on old window joints that has cracked
- Silicone on a period window that looks wrong
- Weathered mastic on the most exposed windows
Sand mastic for homes and businesses in Easton
Across Easton, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand, finished to suit the masonry. Common call-outs are for weathered mastic on the most exposed windows and tired mastic found when preparing windows for paint, on timber door frames, period & listed homes and brick reveals.
Outdoor sealant needs dry, clean surfaces, so work on frames around Easton is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
There’s a 12-month guarantee on every job.
- Where
- Easton (SO21)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Can I do it myself?
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.
What the job involves on each surface
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.
Brick reveals
Sand mastic is also used where timber frames meet brick. It suits older brickwork.
What we are called out for in Easton
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.
The problems people normally mention when they call include:
- Mastic worn away on windows facing the weather
- Wind and rain getting in round a sash window
- A silicone bead on a sash window that spoils the look
- Mastic dropping out of the joint
If you let a flat or house near Winchester station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Comparing quotes
- Who turns up on the day
- When the joint can take water or movement
- Whether VAT is included
- Which sealant they’ll use, and why
Other services in Easton
What happens on the day
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and tidy away. It generally takes a few hours per window, depending on the condition of the joints. In a small place like Easton, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Let us know about earlier repairs to the joints
- Plan for the work area to be out of bounds to pets and children
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, call 0345 464 0079 or email us.
Related advice
What sand mastic looks like in Easton
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 Peter Symonds College, its window and door frames need their mastic kept sound, just like a home’s. For an older house near a landmark such as Church of St Mary, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Easton is about 3 miles north-east of Winchester, in Hampshire. Across the SO21 area, we can carry out sand mastic at your property. Across Hampshire, we cover 683 places, and Easton is one of them. Southampton is on our list too, about 13 miles from Easton.
Postcode districts we cover here for sand mastic: SO21. Local streets include Easton Lane, Malthouse Close and Chapel Lane. Other places close to Easton include Abbots Worthy (1 mile north-west), Martyr Worthy (1 mile north-east), Kings Worthy (1 mile west), Itchen Abbas (2 miles east) and Winnall (2 miles south-west). We also work in nearby towns such as Basingstoke (14 miles north-east), Winchester (3 miles south-west), Eastleigh (9 miles south), Andover (13 miles north-west), Totton (15 miles south-west) and Chandler's Ford (9 miles south-west).
Local landmarks in Easton
We work in homes and buildings around The Cricketers Inn. The closest station to Easton is Winchester station, about 2.4 miles south-west. Other landmarks nearby include Wolvesey Castle (2.4 miles south-west) and St John's Rooms And Chapel (2.3 miles south-west). Green spaces nearby include Twyford Down and Winnall Moors.
How to look after the new joints
A little care helps the new joints last. Our advice:
- Do not paint over the new mastic
- Avoid heavy scraping on the mastic joint
- Sort the mastic before the decorators arrive
- Do not run silicone over sand mastic
Leave the new mastic alone while it firms up. It forms a skin fairly soon but needs longer to fully harden.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.
Landlords, agents and businesses in Easton
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Honest limits
In fairness, there are a few things sealant will not fix:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Sashes that need overhauling
- Cracked or broken glass
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly.
What we seal
- Sash and case windows
- Timber door frames
- Period & listed homes
- Brick reveals
- Stone surrounds
- Tenement windows
Easton: your questions answered
Is Easton in your area for sand mastic?
Yes. Our work covers London and the South East, and Easton is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing, and we will send you a clear quote.
Will you come out to Easton?
Yes, Easton is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Will it make a mess?
We keep the work tidy. We protect what’s around the joints, and we clear up when we are done.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. The silicone is cut out and the joint cleaned, then point it with sand mastic.
Can I add another job to the visit?
Yes, we can. More than one area can go on one quote.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Will the old sealant be removed?
Yes, every time. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
What do you need from me for a quote?
Just the basics: the address or postcode, what’s wrong and any access issues. Then phone 0345 464 0079 or drop us an email.