Hampshire · England
Sand Mastic in Boarhunt
Professional sand mastic in and around Boarhunt, with old sealant always removed completely and a 12-month guarantee.
- Window mastic to renew ahead of painting
- A silicone bead on a sash window that spoils the look
- Mastic dropping out of the joint
Work for landlords, hotels and businesses
Letting agents and landlords in Boarhunt can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Hotels need rooms back in use, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.
About our sand mastic in Boarhunt
For a listed home or one in a conservation area, ask your local planning authority if consent is needed before window work. Sand mastic is often favoured as a like-for-like material. We work on stone surrounds, tenement windows and timber door frames, and common reasons people get in touch are weathered mastic on the most exposed windows and gaps where the frame meets the masonry.
Somewhere as small as Boarhunt, 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.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Place
- Boarhunt (PO17)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Places near Boarhunt
Other services in Boarhunt
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
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.
When it is not the sealant
In fairness, there are a few things sealant won’t fix:
- Sashes that rattle, stick or won’t open
- Decisions on consent for listed homes
- Broken panes
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think.
Where we work in Boarhunt
- Brick reveals
- Timber door frames
- Sash and case windows
- Period & listed homes
- Stone surrounds
- Tenement windows
What happens on the day
Before we leave, we go over the finished joints with you and explain the cure time. The visit itself normally takes a few hours for a single window, longer for several, depending on the amount of work. In a small place like Boarhunt, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Preparing for the visit
- Clear the area around the work
- Where the joints are inside, avoid wetting them before we arrive
- Plan for the work area to be out of bounds to pets and children
Getting a quote
For sand mastic in Boarhunt, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
Related advice
Your questions about sand mastic in Boarhunt
I let a flat near Portchester station. Can you help?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Will you come out to Boarhunt?
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.
Do you remove the old sealant?
Yes, every time. New sealant will not bond properly to old, so the joint is cleaned back first.
Is it possible to take out silicone and use sand mastic instead?
Yes, we do this often. All the old silicone is removed first so the mastic beds in well.
Does someone need to be in?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that generally means someone at home.
Do I need permission for sand mastic on a listed building?
Speak to your local planning authority before work starts. Sand mastic is often favoured as like for like, but they decide.
Can you quote for more than one area?
Of course. Doing several areas at once is normally more efficient.
Where do you work from?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
How to look after the new joints
How long the joints last depends on use and care. Here’s what we suggest:
- Ask a joiner to look at soft timber first
- Ask us before painting near the mastic
- Don’t run silicone over sand mastic
- Check with your local planning authority if your home is listed
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
Windows and doors in Boarhunt
Boarhunt 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. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like Cams Hill School? Then the mastic around its windows and doors needs looking after like any other building’s. Homes close to Church of St Nicholas include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Boarhunt is about 3 miles north-east of Fareham, in Hampshire. Jobs in Boarhunt get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our area takes in 683 places across Hampshire, from the larger towns to small villages.
Here we cover the PO17 postcode area for sand mastic. Other places close to Boarhunt include Southwick (1 mile east), North Fareham (1 mile west), Wallington (2 miles south-west), North Boarhunt (2 miles north) and Fareham Common (2 miles south-west). Larger places within reach include Winchester (15 miles north-west), Gosport (5 miles south), Havant (7 miles east), Eastleigh (11 miles north-west), Fareham (3 miles south-west) and Horndean (6 miles north-east).
Local landmarks in Boarhunt
The nearest railway station is Portchester station, about 1.6 miles south-east. A little further out are Fareham Shopping Centre (2 miles south-west) and Portchester Castle (2.5 miles south-east). Green spaces nearby include Portsdown Hill and St Clair's Meadow.
What happens if it’s left?
Not every filler suits an old window surround. Sand mastic is the like-for-like choice and that can be important for listed homes. Around Boarhunt, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we’ll explain the quote if you ask.
Why book with us
- Fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
- Old sealant always removed completely
- More than 20 years in sealant work
Signs you need sand mastic in Boarhunt
Previous repairs in cement or silicone often trap water or crack away. They don’t suit the joint and we normally remove them.
These are the problems we’re asked about most:
- Draughts and rain around sash boxes
- Window mastic to renew ahead of painting
- Gaps between timber frames and stone or brick
- Silicone on a period window that looks wrong
If you let a flat or house near Portchester station, any sash windows need sound mastic to keep draughts and rain out.
Before you book anyone
- What guarantee comes with the work
- When the joint can take water or movement
- How the joint is cleaned and prepared
- What happens if they find a problem under the old sealant