Hampshire · England
Sand mastic for sash & case windows in Newbridge, Hampshire
Specialist sand mastic for Newbridge: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Patchy fillers round a sash window
- Cracked mastic round a front door frame
- Draughty sash windows at the surround
How we handle sand mastic in Newbridge
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s made from sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. Common call-outs are for wind and rain getting in round a sash window and a silicone bead on a sash window that spoils the look, across period & listed homes, stone surrounds and brick reveals.
Homes in small places like Newbridge often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
You are covered for a year from the day we finish. If anything isn’t right with it, phone 0345 464 0079 or send us an email.
- Place
- Newbridge (SO40)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Common questions in Newbridge
Can you do sand mastic in Newbridge?
Yes, Newbridge is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
I let a flat near Ashurst New Forest station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can ring 0345 464 0079 or email us with the details for a clear quote.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Do you work for hotels and businesses?
Yes. We can plan bigger jobs in stages.
Is sand mastic better than silicone for my windows?
For period timber windows in stone or brick, sand mastic is often the better fit. On modern frames, we’d normally use a flexible sealant, and we will explain why.
How long does sand mastic take to harden?
It skins over fairly quickly but takes longer to harden fully. We will tell you what to expect for your job.
Which products do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we’ll tell you what we’re using.
What exactly is sand mastic?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
Signs you need sand mastic in Newbridge
Shallow joints are a common cause. Mastic that is too thin cracks and drops out so we make sure the new mastic is the right thickness.
Keep an eye out for any of the following:
- Wind and rain getting in round a sash window
- Modern sealant on a period surround
- Gaps where the frame meets the masonry
- Failed mastic on an exposed elevation
If you let a flat or house near Ashurst New Forest station, any sash windows need sound mastic to keep draughts and rain out.
Before you book anyone
- When the joint can take water or movement
- What preparation is included
- Whether they seal over old material or remove it
- Which colour the sealant will be
What we do, step by step
When we arrive, we look over the joints with you first, so you know exactly what we’re doing. We protect the surfaces around the joints before work begins. The work generally takes a few hours for a single window, longer for several. Somewhere like Newbridge 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.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Tell us about any previous sealing or DIY attempts
- On commercial sites, let us know about site rules
How to get a quote
Want a quote for sand mastic? Please call 0345 464 0079 or send us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
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Surface by surface
Stone surrounds
Old stone surrounds are often uneven, so the joint varies in width. We shape it by hand to follow the stone.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
When it is not the sealant
We’d rather tell you now than do work that won’t last, so these are the limits:
- Cracked or broken glass
- Rotten sashes, sills or window boxes (a joiner’s job)
- Crumbling stone or brickwork round the window
If you’re not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer.
Joints and surfaces we work on
- Timber door frames
- Stone surrounds
- Tenement windows
- Sash and case windows
- Period & listed homes
- Brick reveals
How to look after the new joints
So the new joints stay in good condition:
- Keep sills and gutters clear so water drains away
- Inspect the joints round the windows every year or so
- Find out about consent before window work on a listed home
- Avoid heavy scraping on the mastic joint
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger.
What sand mastic looks like in Newbridge
London and the South East are among 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 Landford Manor (about 3.8 miles north-west) are a reminder that the area around Newbridge has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Managing a site like Copythorne CofE Infant School? Then larger buildings have plenty of frames, and the mastic around each one ages. Homes close to Church of St Mary include some older properties, and the joint between an old wall and a newer frame is normally the first place rain gets in.
Newbridge is about 3 miles west of Totton, in Hampshire. Anywhere in SO40, we can carry out sand mastic at your property. Newbridge is one of 683 places in Hampshire we cover. You can also see our page for Southampton, roughly 8 miles from Newbridge.
We cover every part of the SO40 postcode area for sand mastic and the streets around it. We also cover the places around Newbridge: Copythorne (1 mile south-east), Cadnam (1 mile south), Wittensford (1 mile south-west), Winsor (1 mile south-east) and Bartley (2 miles south-east). Larger places within reach include Winchester (14 miles north-east), Eastleigh (10 miles east), Totton (3 miles east), Chandler's Ford (9 miles east), Hedge End (12 miles east) and Lymington (12 miles south).
Local landmarks in Newbridge
For rail, the closest station is Ashurst New Forest station, about 3.9 miles south-east of the centre. Nearby you will also find Tatchbury Mount Hospital (2.1 miles east). For a walk, there’s Copythorne Common.
Also near Newbridge
More services for Newbridge
Landlord and commercial work in Newbridge
Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
What happens if it’s left?
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic suits the building and blends with the stone or brick. Around Newbridge, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and agree the price before starting.
Why us?
- Homes, businesses and hotels
- A 12-month guarantee on all work
- Sanitary silicone with an anti-fungal additive in wet areas
- Any old sealant cut out fully, not covered over
Read how sealant jobs are priced or our reviews.