Hampshire · England
Sand Mastic in The Mint
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in The Mint. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Mastic worn away on windows facing the weather
- Silicone on a period window that looks wrong
- Tired mastic found when preparing windows for paint
How we handle sand mastic in The Mint
Sand mastic does not last for ever, leaving gaps round the window. We rake it out and renew it and tidies the surround. We work on brick reveals, sash and case windows and period & listed homes, and common reasons people get in touch are open joints round the window box and mastic worn away on windows facing the weather.
Homes in small places like The Mint 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.
Your job is guaranteed for a year, as with all our work.
- Where
- The Mint (GU33)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
The Mint: your questions answered
I let a flat near Liss station. Can you help?
Yes, we work for landlords and agents. Just call 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Is The Mint in your area for sand mastic?
Yes. Our work covers London and the South East, and The Mint is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear quote.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
Can I add another job to the visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
Nearby places to The Mint
Other services in The Mint
When it isn’t the sealant
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Sash cords, weights and draught-proofing of the sashes
- Decisions on consent for listed homes
- Cracked or broken glass
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think before you book.
Surfaces we seal
- Brick reveals
- Tenement windows
- Sash and case windows
- Stone surrounds
- Period & listed homes
- Timber door frames
What happens if it’s left?
Draughts round a sash window aren’t always the sashes. Open mastic joints round the box can let air in, and renewing the mastic closes them. Around The Mint, 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 play a part.
Why The Mint customers choose us
- More than 20 years in sealant work
- Approved under the ARBOMaster scheme
- Old sealant always removed completely
- 12-month guarantee on every job
Take a look at our cost guide or customer reviews.
What we are called out for in The Mint
Water gets into small cracks in the mastic and pushes it out. Windows facing the weather tend to go first.
Look out for any of the following:
- Silicone on a period window that looks wrong
- Mastic dropping out of the joint
- Cracked mastic round a front door frame
- Gaps where the frame meets the masonry
Letting a property close to Liss station? Then any sash windows need sound mastic to keep draughts and rain out.
Questions to ask before you book
- Whether the sealant suits the joint
- Whether they’re fully insured
- What happens if they find a problem under the old sealant
- Whether you can choose the colour
DIY versus a professional finish
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
What affects the quote in The Mint
You will get a clear quote before work begins. It takes into account:
- The old material and how stubborn it is
- The size of the job
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first and agree the price before starting.
What we need to know
When you contact us, it’s useful to know:
- Where the job is, and your postcode
- Any previous sealing or DIY work
- Photos by email, if that’s easy
- If it’s domestic, commercial or a hotel
For a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. You’ll have a clear quote before any work starts.
What sand mastic looks like in The Mint
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Liss Junior School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. In the older streets around Hope Church, the joint between an old wall and a newer frame is normally the first place rain gets in.
The Mint is about 4 miles north-east of Petersfield, in Hampshire. We provide sand mastic to householders, landlords and businesses in The Mint and the surrounding area. The Mint is one of 683 towns and villages in Hampshire where we work. There’s also a page for Portsmouth, about 19 miles away.
Work in GU33 is quoted and booked the same way as anywhere else. We also cover the places around The Mint: Liss Forest (1 mile north-west), Liss (1 mile south-west), Rake (1 mile south-east), West Liss (1 mile south-west) and Hill Brow (1 mile south). Larger places within reach include Havant (14 miles south), Horndean (11 miles south-west), Aldershot (14 miles north), Alton (8 miles north-west), Waterlooville (13 miles south-west) and Petersfield (4 miles south-west).
Near you in The Mint
Locally, jobs take us to homes and businesses close to The Temple Inn, among other places. For rail, the closest station is Liss station, about 0.8 miles south-west. Nearby you will also find Chase Community Hospital (3.9 miles north). Not far away are Liss Riverside Railway Walk North and Wheatham Hill.
Surface by surface
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. Sand mastic seals the joint round it.
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
How the visit works
We keep the work tidy and contained to the area we are working on, so you can carry on as normal. Expect the work to take a few hours per window, depending on the condition of the joints. Somewhere as small as The Mint, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Keep children and pets away from the work area
- Let us know about stairs, lifts or work at height
- Tell us about any water getting in
How to get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved and send you a clear quote.