Hampshire · England
Sand mastic for sash & case windows in North Street, Hampshire
Our applicators work in North Street on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly.
- Window mastic to renew ahead of painting
- Gaps where the frame meets the masonry
- Weathered mastic on the most exposed windows
When to call us in North Street
Timber swells and shrinks with the weather. The movement cracks the mastic over time.
Most people get in touch after spotting one of these:
- Gaps where the frame meets the masonry
- Cracked mastic round a front door frame
- Wind and rain getting in round a sash window
- Failed mastic on an exposed elevation
Managing a site like Ropley Church of England Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
What to look for in a quote
- How hidden problems are handled
- Whether they seal over old material or remove it
- Whether the sealant suits the joint
- Who does the work, and how experienced they are
How we handle sand mastic in North Street
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It suits period and listed homes, where modern sealant can look out of place. Typical jobs include gaps between timber frames and stone or brick and gaps round a timber door in stone or brick, across timber door frames, tenement windows and brick reveals.
Somewhere as small as North Street, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
Whatever the size of the job, it’s backed by our 12-month guarantee in North Street and across Hampshire.
- Location
- North Street (SO24)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Places near North Street
What else we do in North Street
What we do, step by step
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, we protect the area and start. It normally takes a few hours for a single window, longer for several. Somewhere like North Street needs a little journey planning: 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 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.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Try not to wet indoor joints just before the visit
- Clear items away from the joints we’re working on
How to get a quote
We quote each job on its own, so start by telling us what you need. Just phone 0345 464 0079 or email us with the details and send photos if you have them.
Related advice
What happens if it’s left?
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. Where a wall is exposed, as many are in small places like North Street, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and give you a clear price before work begins.
Why book with us
- Tidy, careful work
- Experience in homes, commercial sites and hotels
- Anti-fungal sanitary silicone in wet areas
- One-year guarantee on every job
Surface by surface
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.
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.
Should I try it myself first?
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.
Sealing over old silicone is the commonest DIY error. 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.
Work for landlords, hotels and businesses
For anyone letting property in or around North Street, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and photos by email help.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
Windows and doors in North Street
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Bentworth Hall (about 3.9 miles north) are a reminder that the area around North Street has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
For an older house near a landmark such as Church of St Peter, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
North Street is about 6 miles south-west of Alton, in Hampshire. For sand mastic in and around North Street, please phone 0345 464 0079 or send us an email for a quick quote. We are based in Crawley and cover Hampshire. We cover 683 towns and villages across Hampshire, large and small. Southampton is on our list too, about 18 miles from North Street.
Our applicators cover all of SO24 for sand mastic. If you’re just outside North Street, we cover Gilbert Street (1 mile south-east), Ropley (1 mile south), Ropley Dean (1 mile south-west), Kitwood (1 mile east) and Charlwood (2 miles south-east). Further out, we also cover Basingstoke (12 miles north), Winchester (10 miles west), Eastleigh (14 miles south-west), Horndean (13 miles south), Chandler's Ford (15 miles south-west) and Alton (6 miles north-east).
Around North Street
Other landmarks nearby include Barton Castle (3.3 miles north-west) and Alton Community Hospital (5.1 miles north-east). Green spaces nearby include Shutts Copse and Red Hill.
Quotes for sand mastic in North Street
Some jobs are bigger than they look, and some smaller. The main factors:
- Whether old sealant or filler has to be cut out
- Whether the work is at height
- Whether there’s mould to deal with
- The amount of work
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or drop us an email and we will talk you through it.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- The address or postcode of the job
- Whether it has been sealed before
- Pictures of the joints, sent by email
- What’s wrong with the joints now
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job.
Common questions in North Street
Is North Street in your area for sand mastic?
Yes, North Street is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job.
Is North Street within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Where do you work from?
We work from Crawley. Our applicators cover North Street.
Do you do commercial work?
Yes. We can plan bigger jobs in stages.
What is sand mastic?
Sand plus a binder based on linseed oil. It’s built up in the joint by hand and shaped to suit the surround.
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 will give you an idea for your job.
Can you do several jobs on one visit?
Yes. Just list everything you need and you’ll get one quote.
Do you guarantee sand mastic work?
There’s a 12-month guarantee on every job, sand mastic included.