Hampshire · England
Sand Mastic in Whitsbury
We cover Whitsbury for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Modern sealant on a period surround
- Tired mastic found when preparing windows for paint
- Old cement repairs round a window that have failed
Whitsbury questions
Can you do sand mastic in Whitsbury?
Yes. Our work covers London and the South East, and Whitsbury is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Is Whitsbury within the area you cover?
Yes. Whitsbury is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Will you leave a mess?
We keep the work tidy. We protect what’s around the joints, and the area is left clean when we finish.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Is consent needed for window work on a listed home?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like, but they decide.
Do the sealants smell?
Possibly a little. It fades as the sealant cures.
Do I need to be at home?
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.
Do you work for letting agents?
Yes. We work in homes, commercial premises and hotels, and we’re fully insured.
Sand mastic for homes and businesses in Whitsbury
Sand mastic does not last for ever, leaving gaps round the window. We rake it out and renew it and tidies the surround. Typical jobs include failed mastic on an exposed elevation and tired mastic found when preparing windows for paint, across stone surrounds, brick reveals and sash and case windows.
In a village or hamlet like Whitsbury, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
Your job is guaranteed for a year, as with all our work.
- Where
- Whitsbury (SP6)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Whitsbury homes and the weather
With historic houses such as Breamore House (about 1.6 miles east) nearby, there’s older building stock in the area around Whitsbury as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
Homes close to Church of St Leonard include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Whitsbury is in Hampshire. Every kind of property in Whitsbury can book us for sand mastic. The work is guaranteed for a year. We cover 683 towns and villages across Hampshire. You can also see our page for Southampton, roughly 19 miles from Whitsbury.
We cover every part of the SP6 postcode area for sand mastic. Close by, we work in Rockbourne (1 mile south-west), Damerham (2 miles south-west), Sandleheath (3 miles south), Ashford (3 miles south) and Alderholt (4 miles south). We also work in nearby towns such as Totton (14 miles east), Romsey (15 miles east), Ringwood (9 miles south), Fordingbridge (3 miles south), St Leonards (10 miles south) and Brockenhurst (15 miles south-east).
What’s near Whitsbury
We work in homes and buildings around The Cart Wheel Public House. Well-known places in the area include Fordingbridge Museum (3.4 miles south-east) and Salisbury District Hospital (5.2 miles north).
Leave it or put it right?
If you are redecorating, renew the mastic first. Paint over cracked mastic will not stop the gaps, and the new mastic is traditionally left unpainted. In a small place like Whitsbury, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
What you get with us
- Anti-fungal silicone where joints get wet
- An ARBOMaster approved applicator
- A 12-month guarantee on all work
- Old sealant always removed completely
See what affects the cost and what customers say.
Landlord and commercial work in Whitsbury
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will quote.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Towns and villages near Whitsbury
Other services in Whitsbury
Common problems we fix in Whitsbury
Timber frames move with the seasons. The movement cracks the mastic over time.
The problems people generally mention when they call are:
- Crumbling sand mastic round a window
- Cement or filler used on old window joints that has cracked
- Mastic worn away on windows facing the weather
- Cracked mastic round a front door frame
Managing a site like Western Downland Church of England Aided Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
What to look for in a quote
- What the cure time is
- How much experience the applicator has
- What guarantee comes with the work
- What the quote includes, VAT included or not
What we cannot put right
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Sashes that need overhauling
- Damaged stone surrounds
- Putty and glazing repairs
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly.
Surfaces we seal
- Sash and case windows
- Brick reveals
- Period & listed homes
- Stone surrounds
- Tenement windows
- Timber door frames
What affects the cost of sand mastic
Your quote is based on your job. We look at:
- Any mould that needs treating
- How much there is to do
- The product the joint needs
- How much old sealant there is and how hard it is to remove
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re not sure whether it needs doing, call 0345 464 0079 or drop us an email for an honest opinion and a quote.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- A few pictures by email, if you can
- How many joints, rooms or windows are involved
- Where the property is
If you’re in Whitsbury and need sand mastic, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
What we do, step by step
All our tools and materials come with us in the van. After a quick look at the joints together, the area is protected and the work begins. Most jobs take anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Whitsbury, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Move anything stored near the joints
- Keep pets and children clear of the area while we work
Get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work.
Read more
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Check the mastic when you check the paintwork
- Avoid patching sand mastic with silicone
- Keep sills and gutters clear so water drains away
- Sort the mastic before the decorators arrive
Keep gutters and sills clear so water runs away from the surround. Constant wetting wears the mastic faster.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.