Hampshire · England
Sand Mastic in Standford
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Standford. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Mastic that needs renewing before redecorating
- Modern sealant on a period surround
- Gaps round a timber door in stone or brick
When to call us in Standford
Water gets into small cracks in the mastic and pushes it out. Windows facing the weather tend to go first.
Signs it’s time to call us include:
- Failed mastic on an exposed elevation
- Open joints round the window box
- Crumbling sand mastic round a window
- Modern sealant on a period surround
Letting a property close to Liphook station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Before booking anyone
- How long the guarantee is
- What happens if they find a problem under the old sealant
- Whether VAT is included
- What insurance they hold
About our sand mastic in Standford
Fresh sand mastic forms a skin quite soon but full hardening takes longer. Traditional guidance is not to paint over it and we’ll advise if you are redecorating. We’re often asked to deal with crumbling sand mastic round a window and tired mastic found when preparing windows for paint, on tenement windows, sash and case windows and stone surrounds.
Homes in small places like Standford 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.
All our work comes with a 12-month guarantee, wherever you are in Hampshire.
- Location
- Standford (GU35)
- Region
- Hampshire
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY versus a professional finish
If you’re 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 does not work out, we can still put it right.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Different surfaces, different methods
Brick reveals
We rake out the old mastic and pack deep voids before pointing.
Sash and case windows
A sash window’s box frame sits in the masonry opening. Sand mastic seals the joint round it.
What sealant work cannot fix
New sealant can’t fix everything, and we’ll tell you before work begins. Sealant will not put right:
- Whether work needs listed building consent
- Damaged stone surrounds
- Decayed frames that need repair
Not sure which it is? You can call 0345 464 0079 or drop us an email and we’ll tell you honestly.
Where we work in Standford
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Timber door frames
- Brick reveals
- Tenement windows
Common questions in Standford
Is Standford within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Liphook station. Can you help?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Can sand mastic be painted?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Talk to us before any painting near it.
What information do you need?
Tell us what needs doing and where. If we need more, we will ask.
Do you have insurance?
Yes. We are fully insured, and we’ve been doing sealant work for more than 20 years.
Where are you based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that generally means someone at home.
Is it OK to seal over old sealant?
No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
More services for Standford
Why act early in Standford
Replacing sash windows is a big decision for a period home, and in listed buildings it may need consent. Where the frames are in good order, new mastic seals the surround. Older cottages and farmhouses around Standford can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
Why choose Mr Mastic in Standford
- Anti-fungal sanitary silicone in wet areas
- Tidy, careful work
- Over 20 years’ experience
- An ARBOMaster approved applicator
Take a look at how sealant jobs are priced and our reviews.
How it works
Before we leave, we go over the finished joints with you and explain the cure time. The visit itself generally takes anything from a few hours to a full day, depending on how many windows, depending on the size of the job. For a village or hamlet like Standford, the journey is planned in advance: 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.
- Each surround is checked first.
- The joint is raked out and cleaned.
- 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
- Let us know about stairs, lifts or work at height
- Clear the area around the work
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, phone 0345 464 0079 or email us.
Advice
Frames and glazing around Standford
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.
Schools such as Weyford Nursery and Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. If you live in an older home near St Mark's Sacred Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Standford is about 7 miles south-east of Alton, in Hampshire. Whether you are in the middle of Standford or further out, sand mastic is available for homes and businesses alike. Standford is one of 683 places in Hampshire where we work. We also work in Portsmouth, about 23 miles from Standford.
All of GU35 is covered for sand mastic, from the main roads to the quietest streets. Streets in the area include Robin Hood Gardens, Standford Lane and Tulls Lane, all of which we cover. We also cover the places around Standford: Hollywater (1 mile south-west), Deadwater (1 mile north-west), Lindford (1 mile north-west), Headley (1 mile north-east) and Bordon (1 mile north-west). Further out, we also cover Farnborough (13 miles north), Fleet (12 miles north), Aldershot (10 miles north), Alton (7 miles north-west), Petersfield (8 miles south-west) and Hook (13 miles north-west).
Local landmarks in Standford
In Standford, that means homes and buildings near Mill Chase Academy and the streets around them. Standford’s nearest station is Liphook station, about 2.9 miles south-east. Other landmarks nearby include Chase Community Hospital (1.1 miles west). The countryside around Standford includes Wheeler's Down and Deadwater Valley.
Aftercare tips
After the cure time, these simple habits help:
- Check the mastic when you check the paintwork
- Renew mastic before redecorating the windows
- Avoid heavy scraping on the mastic joint
- Have rotten timber repaired before new mastic goes in
Avoid painting over the new mastic, as traditional guidance advises. If you are redecorating, ask us first.
Fine cracks show the mastic is starting to fail. It’s easier to renew it before it drops out.