Hampshire · England
Sand mastic for sash & case windows in Boorley Green, Hampshire
We cover Boorley Green for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Gaps where the frame meets the masonry
- Mastic dropping out of the joint
- Patchy fillers round a sash window
How the job changes by surface
Timber door frames
A neat sand mastic joint round a front door suits a period home.
Sash and case windows
On a sash window, the mastic joint shows on the outside, so a neat, even finish matters.
About our sand mastic in Boorley Green
Sand mastic does not last for ever, leaving gaps round the window. Renewing it closes the gap and tidies the surround. We are often asked to deal with weathered mastic on the most exposed windows and window mastic to renew ahead of painting, across period & listed homes, brick reveals and timber door frames.
In a smaller place like Boorley Green, some walls face open ground and catch the full force of the weather. The mastic around frames on those walls tends to age faster.
We guarantee the work for a year. If something is not right with it in that time, tell us and we’ll put it right.
- Location
- Boorley Green (SO32)
- Region
- Hampshire
- Cover
- 12 months on all our work
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How the visit works
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a few hours per window, depending on the condition of the joints, and the area is left clean. For a job in Boorley Green, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since 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.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Before we arrive
- Tell us if parking is tricky
- Let us know if you’ve seen damp or leaks
- Mention any tricky access
Getting a quote
Getting a quote is simple: let us know the job and the location. A few photos by email make the job easier to understand.
Advice
Also near Boorley Green
Also in Boorley Green
Boorley Green: your questions answered
Can you help a landlord with a rental near Hedge End station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Do you cover smaller places like Boorley Green?
Yes, Boorley Green is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Is there any odour?
Possibly a little. Any smell clears as the sealant cures.
How do I get a quote for sand mastic in Boorley Green?
Size, access and the old material all affect the cost. Ask us for a quote and we’ll talk you through it.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status, and we’re fully insured.
Can I choose the sealant colour?
We help you choose a colour that suits, from white and clear to greys and other shades. The choice depends on the product the joint needs.
Can old silicone round a sash window be swapped for sand mastic?
Yes, it’s a common request. All the old silicone is removed first so the mastic can sit properly.
Looking after it afterwards
Looking after new joints is easy:
- Renew mastic before redecorating the windows
- Do not paint over the new mastic
- Avoid patching sand mastic with silicone
- Check with your local planning authority if your home is listed
Do not run silicone over the new mastic. If you see a crack, ask us to take a look before trying a quick fix.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
How we quote for sand mastic
We quote each job individually. These are the things that affect it:
- The old material and how stubborn it is
- Any mould that needs treating
- Which sealant suits the joint
- The number of rooms or windows
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part.
What to tell us for a quote
To help us quote quickly, please include:
- The address or postcode of the job
- What the problem is, such as mould, gaps, leaks or cracking
- Any access issues, like height or stairs
- Pictures of the joints, sent by email
For a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. We will give you a clear price before any work starts.
What sealant work cannot fix
We will always be straight with you, so here’s what new sealant will not do:
- Crumbling stone or brickwork round the window
- Rotten sashes, sills or window boxes (a joiner’s job)
- Broken panes
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly before you book.
Where we work in Boorley Green
- Brick reveals
- Timber door frames
- Period & listed homes
- Stone surrounds
- Tenement windows
- Sash and case windows
Do you need sand mastic in Boorley Green?
Timber swells and shrinks with the weather. That movement opens up the mastic joint little by little.
If you can see any of these, it’s time to have the joints looked at:
- Gaps round a timber door in stone or brick
- Open joints round the window box
- Old sand mastic that has cracked, crumbled or fallen out
- Mastic worn away on windows facing the weather
Rented homes near Hedge End station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Comparing quotes
- Whether they’re fully insured
- What the quote includes, VAT included or not
- How long the guarantee is
- Who does the work, and how experienced they are
Work for landlords, hotels and businesses
Letting agents and landlords in Boorley Green can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
For anyone letting property in or around Boorley Green, several properties can be quoted together. Send us the addresses and the work at each.
Frames and glazing around Boorley Green
Historic houses like South Stoneham House (about 4.3 miles west) are a reminder that the area around Boorley Green has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around St Luke's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Schools such as Berrywood Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Boorley Green is about 1 mile north-east of Hedge End, in Hampshire. We carry out sand mastic for homes and businesses in Boorley Green. We cover 683 towns and villages across Hampshire.
Jobs for sand mastic in SO32 works the same way as everywhere else we cover. You will find streets such as Braxells Road, Bushy Dene Road and Harper Road. We also cover Durley (1 mile north-east), Botley (1 mile south), Horton Heath (2 miles north-west), Curdridge (2 miles east) and Fair Oak (2 miles north). Further out, we also cover Winchester (9 miles north), Gosport (10 miles south-east), Havant (14 miles east), Eastleigh (4 miles north-west), Fareham (7 miles south-east) and Horndean (12 miles east).
Local landmarks in Boorley Green
In Boorley Green, that means homes and buildings near Wildern School and Wildern School and the streets around them. For rail, the closest station is Hedge End station, roughly 0.7 miles west. Nearby you will also find Bursledon Brickworks Industrial Museum (3.1 miles south) and Moorgreen Hospital (1.9 miles west). Not far away are Bishops Waltham Branch LNR.