Hampshire · England
Sand Mastic in Deadwater
Sand mastic for Deadwater and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Mastic that needs renewing before redecorating
- Old cement repairs round a window that have failed
- Failed mastic on an exposed elevation
Sand mastic in Deadwater
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditional guidance is not to paint over it, so ask us before you decorate. If you have cement or filler used on old window joints that has cracked and mastic round period door frames that has failed, we can help, on sash and case windows, stone surrounds and brick reveals alike.
Around Deadwater, conservatories, garden rooms and patio doors are often part of the house. Their glazing joints and frame seals are as much a part of the job as the windows, and any older timber or sash windows need a sealant that suits them.
Big or small, it’s backed by our one-year guarantee in Deadwater and across Hampshire.
- Place
- Deadwater (GU35)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When it isn’t the sealant
New sealant cannot fix everything, and we’d rather say so up front. It will not solve:
- Crumbling stone or brickwork round the window
- Broken panes
- Planning or listed building consent (your local planning authority decides)
If you are not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer.
What we seal
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Tenement windows
- Timber door frames
- Brick reveals
For landlords and businesses
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.
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
How the visit works
At the end, we look at the finished work together. The work normally takes anything from a few hours to a full day, depending on how many windows, depending on the size of the job. For a job in Deadwater, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Clear the area around the work
- Mention any parking rules near the property
How to get a quote
Every job is quoted individually, so the first step is telling us about yours. Simply phone 0345 464 0079 or send us an email and describe the job and send pictures if you have them.
Advice
Also near Deadwater
Also in Deadwater
Quotes for sand mastic in Deadwater
The price is agreed before any work begins. It takes into account:
- Access and height
- Any mould that needs treating
- The amount of work
- When we can work, for business premises
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Helping us quote
You do not need to know the technical terms. It helps if you can tell us:
- Whether it has been sealed before
- How many joints, rooms or windows are involved
- A few photos by email, if you can
- The address or postcode of the job
We don’t 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.
Frames and glazing around Deadwater
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.
If you look after a building such as Mill Chase Academy, its window and door frames need their mastic kept sound, just like a home’s. In the older streets around St Mark's Sacred Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Deadwater is about 1 mile east of Bordon, in Hampshire. From the centre of Deadwater to the outskirts, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Deadwater is one of 683 towns and villages in Hampshire we cover for sand mastic. You can also see our page for Portsmouth, about 23 miles away.
Jobs for sand mastic in GU35 works the same way as everywhere else we cover. We cover properties on Alma Road, Varna Road and Rowan Road and the roads around them. Nearby, we also carry out sand mastic in Lindford (1 mile north-east), Bordon (1 mile west), Hollywater (1 mile south), Standford (1 mile south-east) and Pinewood Village (1 mile north-west). Within a short drive, we also cover Basingstoke (15 miles north-west), Farnborough (13 miles north), Fleet (11 miles north), Aldershot (10 miles north-east), Alton (6 miles north-west) and Petersfield (8 miles south-west).
Near you in Deadwater
In Deadwater, that means homes and buildings near Weyford Nursery and Primary School. The nearest railway station is Liphook station, roughly 3.6 miles south-east of the centre. Nearby you’ll also find Chase Community Hospital (0.7 miles south-west). Open spaces near Deadwater include Deadwater Valley and Selborne Hill.
Surface by surface
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair, so check who is responsible first.
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
When to call us in Deadwater
Previous repairs in cement or silicone often trap water or crack away. They don’t move with the timber and we normally remove them.
Any of these means the joints need attention:
- Gaps between timber frames and stone or brick
- Wind and rain getting in round a sash window
- Cement or filler used on old window joints that has cracked
- Failed mastic on an exposed elevation
Rented homes near Liphook station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Comparing quotes
- Whether all the old sealant comes out first
- How the surfaces are prepared before sealing
- What the cure time is
- Whether VAT is included
Keeping the joints in good condition
Simple care keeps the joints in good condition. We recommend:
- Ask a joiner to look at soft timber first
- Avoid heavy scraping on the mastic joint
- Keep modern sealant off the mastic
- Sort the mastic before the decorators arrive
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
Common questions in Deadwater
Can you do sand mastic in Deadwater?
Yes. We work across London and the South East, and Deadwater is part of that. Just phone 0345 464 0079 or email us with a few details of the job, and we will send you a clear quote.
Will you come out to Deadwater?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can old silicone round a sash window be swapped for sand mastic?
Generally, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
What should I tell you?
The location, the problem and the rough size of the job. If you can, email a few pictures.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages.
Do you offer different sealant colours?
We will suggest a colour to suit the surroundings. The product needed can limit the range.
Can I paint the new mastic?
It’s traditionally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
Should I check with the council before work on a listed or conservation-area home?
Check with your local planning authority. They decide whether consent is needed for work to your windows.