Hampshire · England
Sand Mastic in Old Netley
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Old Netley, backed by a 12-month guarantee. Call for a quick quote.
- Patchy fillers round a sash window
- Tired mastic found when preparing windows for paint
- Mastic round period door frames that has failed
What we’re called out for in Old Netley
Most of it is simply age. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
These are the problems we’re asked about most:
- Patchy fillers round a sash window
- Mastic round period door frames that has failed
- Wind and rain getting in round a sash window
- Mastic dropping out of the joint
Rented homes near Bursledon station change hands often, and any sash windows need sound mastic to keep draughts and rain out.
Before you book anyone
- How the surfaces are prepared before sealing
- How much experience the applicator has
- What the cure time is
- How hidden problems are handled
Sand mastic in Old Netley
Our applicators renew the sand mastic around sash and case windows and doors in stone and brick. Out comes the old, loose mastic, the joint is prepared and new mastic is shaped by hand. We work on sash and case windows, period & listed homes and brick reveals, and the jobs we see most are mastic that needs renewing before redecorating and gaps where the frame meets the masonry.
Around Old Netley, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
Whatever the size of the job, it’s backed by our 12-month guarantee.
- Where
- Old Netley (SO31)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Why it’s worth doing now in Old Netley
Cement-based fillers and modern sealants do not always suit a period surround. Sand mastic is the like-for-like choice and that can be important for listed homes. In a small place like Old Netley, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you’re unsure, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why us?
- We leave the area clean and tidy
- Sanitary silicone with an anti-fungal additive in wet areas
- Every job guaranteed for a year
- ARBOMaster approved applicator
Take a look at our cost guide or customer reviews.
What happens on the day
On the day, there’s very little for you to do. Show us the job and we will take it from there. The job generally takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Old Netley, the journey is planned in advance: let us know about lanes, gates and parking. 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.
How to prepare
- Mention any tricky access
- Mention any sign-in or site rules at work premises
- Try not to wet indoor joints just before the visit
How to get 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, phone 0345 464 0079 or send us an email.
Advice
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Failed sealant is one of the commonest items on a check-out report. Several properties can go on one quote.
Different surfaces, different methods
Brick reveals
Loose mastic comes out and deep gaps are packed before the new mastic goes in.
Stone surrounds
Stone openings are rarely perfectly straight, so the joint varies in width. Sand mastic is shaped by hand to suit.
Common questions in Old Netley
Does living near the coast affect sand mastic in Old Netley?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Do you cover smaller places like Old Netley?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
What does sand mastic cost?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before any work starts.
Will it make a mess?
No. The area is protected while we work and cleaned up afterwards.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we’re fully insured.
Do you offer different sealant colours?
Most of the time, yes. We will explain which colours are available.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Should I try DIY first?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
What sand mastic looks like in Old Netley
Old Netley is within about 2 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you look after a building such as Bursledon Church of England Infant School, the mastic around its windows and doors needs looking after like any other building’s. Homes close to St Paul’s Church include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in.
Old Netley is about 2 miles south-west of Hedge End, in Hampshire. Anywhere in SO31, our applicators can take on sand mastic. Old Netley is one of 683 towns and villages in Hampshire where we work.
Every address in SO31 is within our area for sand mastic. Local streets include Darlee Gate, Green Lane and Cranbury Gardens, all of which we cover. Other places close to Old Netley include Lowford (1 mile north-east), Bursledon (1 mile east), Butlocks Heath (1 mile south-west), Hound (1 mile south-west) and Netley (1 mile south-west). Further out, we also cover Winchester (12 miles north), Gosport (10 miles south-east), Havant (15 miles east), Eastleigh (5 miles north), Fareham (6 miles south-east) and Horndean (14 miles east).
Landmarks near Old Netley
In Old Netley, that means homes and buildings near Oasis Academy Mayfield, Westwood Woodland Park and The Linden Tree pub and the streets around them. The nearest railway station is Bursledon station, about 1 mile south-east. Nearby you will also find Coldeast (2.3 miles south-east) and Bursledon Brickworks Industrial Museum (1.6 miles east). For a walk, there’s Netley Common.
More services for Old Netley
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Crumbling stone or brickwork round the window
- Sash cords, weights and draught-proofing of the sashes
- Cracked or broken glass
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.
Joints and surfaces we work on
- Tenement windows
- Timber door frames
- Sash and case windows
- Period & listed homes
- Stone surrounds
- Brick reveals
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
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.