Hampshire · England
Sand Mastic in Vernham Street
Sand mastic across Vernham Street and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Open joints round the window box
- Silicone on a period window that looks wrong
- Cement or filler used on old window joints that has cracked
How we handle sand mastic in Vernham Street
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. 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. We work on period & listed homes, brick reveals and stone surrounds, and common reasons people get in touch are open joints round the window box and draughts and rain around sash boxes.
Mastic can only go onto a dry, clean joint, so window work in Vernham Street is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
Our work is backed for twelve months, in Vernham Street and everywhere else we cover.
- Place
- Vernham Street (SP11)
- Region
- Hampshire
- Cover
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Windows and doors in Vernham Street
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Stargroves (about 4.2 miles north-east) are a reminder that the area around Vernham Street 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 Vernham Dean Gillum's Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Vernham Street is about 7 miles north of Andover, in Hampshire. Jobs in Vernham Street get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Vernham Street is one of 683 places in Hampshire where we work for sand mastic. You can also see our page for Reading, about 24 miles away.
Jobs for sand mastic in SP11 is quoted and booked the same way as anywhere else. We also cover the places around Vernham Street: Test Valley (3 miles east), Upper Green (4 miles north), Ashmansworth (4 miles east), Lower Green (4 miles north) and Inkpen Common (4 miles north-east). Further out, we also cover Andover (7 miles south), Tidworth (9 miles south-west), Ludgershall (7 miles south-west), Whitchurch (9 miles south-east), East Anton (6 miles south) and Oakley (15 miles east).
Landmarks near Vernham Street
In Vernham Street, that means homes and buildings near The George Inn, among other places. Open spaces near Vernham Street include Combe Hill.
Vernham Street questions
Do you cover smaller places like Vernham Street?
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.
Is sand mastic in Vernham Street guaranteed?
All our work, in Vernham Street and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Do I need to be at home?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Do you have insurance?
Yes. We are fully insured.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
How long does sand mastic take?
As a guide, most jobs take anything from a few hours to a full day, depending on how many windows. Bigger jobs take longer.
When will the new mastic be hard?
Not right away. It skins first and hardens fully later and we’ll give you an idea for your job.
Should I use sand mastic or silicone?
For period timber windows in stone or brick, sand mastic is often the better fit. Modern frames normally suit a flexible sealant, and we will explain why.
How to look after the new joints
To keep the joints looking good and working properly:
- Make sure water runs off the sill
- Check with your local planning authority if your home is listed
- Inspect the joints round the windows every year or so
- Have rotten timber repaired before new mastic goes in
Look at the mastic when you look over the windows. Small cracks are easier to deal with early.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
What we are called out for in Vernham Street
Some old mastic was never deep enough. Mastic that’s too thin cracks and drops out so we make sure the new mastic is the right thickness.
If you can see any of these, it’s time to have the joints looked at:
- Cracked mastic round a front door frame
- Crumbling sand mastic round a window
- Draughty sash windows at the surround
- Old cement repairs round a window that have failed
For an older house near a landmark such as Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Questions to ask before booking
- How long to leave it before use
- Whether they seal over old material or remove it
- How the surfaces are prepared before sealing
- Whether VAT is included
Different surfaces, different methods
Stone surrounds
Old stone surrounds are often uneven, so the joint varies in width. Sand mastic is shaped by hand to suit.
Sash and case windows
Sash windows are where we do most sand mastic work. Each joint round the box is raked out and renewed.
How we quote for sand mastic
You’ll get a clear quote before any work starts. It takes into account:
- How much there is to do
- How much old sealant there is and how hard it is to remove
- How many rooms, windows or areas are involved
- When we can work, for business premises
Doing several joints on one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Helping us quote
Photos help, but a description is a good start. Please mention:
- How many joints, rooms or windows are involved
- How we’d reach the joints
- What’s wrong with the joints now
- If it’s domestic, commercial or a hotel
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we’ll take it from there.
Also near Vernham Street
Also in Vernham Street
What sealant work cannot fix
New sealant cannot fix everything, and we’d rather say so up front. Sealant will not put right:
- Whether work needs listed building consent
- Broken panes
- Masonry that needs repairing
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer.
Where we work in Vernham Street
- Sash and case windows
- Period & listed homes
- Stone surrounds
- Brick reveals
- Tenement windows
- Timber door frames
The process
At the end, we look at the finished work together and explain the cure time. The visit itself generally takes a few hours per window, depending on the condition of the joints, depending on the size of the job. Somewhere as small as Vernham Street, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- 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.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Move anything stored near the joints
- Keep children and pets away from the work area
Ask for a quote
We do not publish a price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.