Hampshire · England
Sand Mastic in Old Alresford
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Old Alresford, backed by a 12-month guarantee. Ask us for a quote.
- A silicone bead on a sash window that spoils the look
- Patchy fillers round a sash window
- Mastic dropping out of the joint
About our sand mastic in Old Alresford
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditional guidance is not to paint over it and we’ll advise if you are redecorating. We work on period & listed homes, brick reveals and tenement windows, and people most often call us about cement or filler used on old window joints that has cracked and mastic that needs renewing before redecorating.
Around Old Alresford, 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.
There’s a 12-month guarantee on every job, large or small.
- Place
- Old Alresford (SO24)
- Region
- Hampshire
- Cover
- 12 months on all our work
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What we do, step by step
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours for a single window, longer for several. Somewhere like Old Alresford needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
How to prepare
- Tell us if parking is tricky
- Try not to wet indoor joints just before the visit
- Let us know about earlier repairs to the joints
Get a quote
Every job is quoted individually. Just ring 0345 464 0079 or email us with the details.
Advice
Places near Old Alresford
What else we do in Old Alresford
Looking after it afterwards
After the cure time, these simple habits help:
- Avoid patching sand mastic with silicone
- Ask a joiner to look at soft timber first
- Clear gutters so water doesn’t pour onto the windows
- Avoid heavy scraping on the mastic joint
Leave the new mastic unpainted, as traditional guidance advises. Ask us before any decorating around it.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
Common problems we fix in Old Alresford
Decorating can disturb tired mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
The problems people generally mention when they call are:
- Silicone on a period window that looks wrong
- Failed mastic on an exposed elevation
- Cracked mastic round a front door frame
- Draughty sash windows at the surround
If you live in an older home near Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- Is VAT in the price?
- Which sealant they’ll use, and why
- What the cure time is
- How the colour is chosen
Old Alresford homes and the weather
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. Historic houses like Hinton Ampner House (about 4.1 miles south) are a reminder that the area around Old Alresford 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.
For site and facilities teams at buildings such as Perins School, the mastic around its windows and doors needs looking after like any other building’s.
Old Alresford is about 7 miles north-east of Winchester, in Hampshire. Every kind of property in Old Alresford can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Across Hampshire, we cover 683 places, Old Alresford among them. Southampton is on our list too, about 16 miles from Old Alresford.
We work across the SO24 postcode area for sand mastic and the streets around it. Streets in the area include Kiln Lane, Colden Lane and The Brook. If you are just outside Old Alresford, we cover Bighton (1 mile east), Northington (2 miles north-west), Totford (3 miles north-west), Brown Candover (3 miles north) and Upper Wield (4 miles north-east). Larger places within reach include Basingstoke (11 miles north), Winchester (7 miles south-west), Eastleigh (12 miles south-west), Horndean (15 miles south-east), Chandler's Ford (13 miles south-west) and Alton (9 miles east).
Near you in Old Alresford
Around Old Alresford, our work takes us to homes and buildings near The Globe Inn and the streets around them. Well-known places in the area include Barton Castle (3.1 miles north-east).
Questions from Old Alresford
Is sand mastic in Old Alresford guaranteed?
All our work, in Old Alresford and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Is Old Alresford within the area you cover?
Yes, Old Alresford is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
Is it possible to take out silicone and use sand mastic instead?
Yes, it’s a common request. The old silicone has to come out completely so the mastic beds in well.
Where is Mr Mastic based?
We’re based in Crawley, and we work across South East England, London and Scotland.
Will it make a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Do you have insurance?
Yes. We are fully insured, with over 20 years’ experience in sealant work.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Different surfaces, different methods
Stone surrounds
Stone surrounds suit sand mastic well. The finish blends with the masonry.
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
How we quote for sand mastic
Call for a quick quote. The main things that affect it are:
- When we can work, for business premises
- Mould in or behind the old joints
- The product the joint needs
- How many rooms, windows or areas are involved
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
Helping us quote
When you call or email, these details help:
- If someone has resealed it before
- The type of property
- Roughly how big the job is
- The problem you’ve noticed
If you’re in Old Alresford and need sand mastic, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Landlord and commercial work in Old Alresford
If you manage several properties in or around Old Alresford, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and photos by email help.
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.