Hampshire · England
Sand mastic for sash & case windows in Sparsholt, Hampshire
We cover Sparsholt 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.
- Crumbling sand mastic round a window
- Weathered mastic on the most exposed windows
- Gaps where the frame meets the masonry
Landlords, agents and businesses in Sparsholt
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can go on one quote.
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will quote.
How we handle sand mastic in Sparsholt
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant and we will explain which is best for yours. Typical jobs include cracked mastic round a front door frame and gaps between timber frames and stone or brick, across brick reveals, sash and case windows and timber door frames.
Outdoor sealant needs dry, clean surfaces, so work on frames around Sparsholt is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
There’s a 12-month guarantee on every job.
- Place
- Sparsholt (SO21)
- Wider area
- Hampshire
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Sparsholt
Other services in Sparsholt
Quotes for sand mastic in Sparsholt
You will get a clear quote before work begins. It’s based on:
- The product the joint needs
- When we can work, for business premises
- How many areas need sealing
- The old material and how stubborn it is
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Asking for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- How we’d reach the joints
- The type of property
- Any previous sealing or DIY work
- A few photos by email, if you can
If you are in Sparsholt and need sand mastic, call 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Keeping the joints in good condition
After the cure time, these simple habits help:
- Do not run silicone over sand mastic
- Avoid heavy scraping on the mastic joint
- Get any rot dealt with first
- Inspect the joints round the windows every year or so
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.
Sparsholt: your questions answered
Is Sparsholt within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you help a landlord with a rental near Winchester station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear quote.
What is sand mastic?
Sand plus a binder based on linseed oil. It’s applied by hand and shaped to suit the surround.
Where are you based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Can old silicone round a sash window be swapped for sand mastic?
Usually, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
Is it possible to paint over sand mastic?
Traditional guidance is not to paint over sand mastic. If you are redecorating the window, ask us first and we’ll talk you through it.
How much does sand mastic cost in Sparsholt?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
What do you put in the joint?
Products from Arbo and Everbuild, among others, picked for each joint. We will tell you what we’re using and why.
What sand mastic looks like in Sparsholt
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.
If you look after a building such as Sparsholt Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s. For an older house near a landmark such as Church of St Stephen, the joint between an old wall and a newer frame is usually the first place rain gets in.
Sparsholt is about 3 miles north-west of Winchester, in Hampshire. Wherever you are in the SO21 postcode area, we cover sand mastic for homes and businesses. We cover 683 towns and villages across Hampshire. Southampton is on our list too, around 11 miles away.
Our applicators cover all of SO21 for sand mastic. You will find streets such as Home Lane, Church Lane and Woodman Lane, all of which we cover. Nearby, we also carry out sand mastic in Westley (1 mile north-west), Littleton (1 mile north-east), Harestock (2 miles east), Weeke (2 miles east) and Stanmore (3 miles south-east). We also work in nearby towns such as Winchester (3 miles south-east), Eastleigh (8 miles south), Andover (10 miles north-west), Totton (12 miles south-west), Chandler's Ford (7 miles south) and Hedge End (12 miles south).
What’s near Sparsholt
Around Sparsholt, our work takes us to homes and buildings near The Plough Inn and Kings' School. The closest station to Sparsholt is Winchester station, about 2.7 miles east of the centre. Nearby you will also find Winchester Castle (2.8 miles south-east) and Balfour Museum of Hampshire Red Cross History (2.1 miles south-east). The countryside around Sparsholt includes Winnall Moors and Twyford Down.
How it works
The work is kept neat and contained to the joints we are treating, so you can carry on as normal. The job generally takes a few hours for a single window, longer for several, and we explain the cure time before we leave. In a small place like Sparsholt, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- We dress the finish so it sits neatly against the masonry.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Let us know about parking restrictions
- Clear the area around the work
Get a quote
To get a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.
Read more
What happens if it’s left?
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall, so dealing with it now protects both. In a small place like Sparsholt, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Ask us for a quote and we’ll explain what it covers.
Why book with us
- A 12-month guarantee on all work
- 4.9 on Google from 180+ five-star reviews
- Any old sealant cut out fully, not covered over
- Over 20 years’ experience
Read what affects the cost and what customers say.
Common problems we fix in Sparsholt
Timber swells and shrinks with the weather. That movement opens up the mastic joint over time.
Most people get in touch after spotting something like this:
- Tired mastic found when preparing windows for paint
- A silicone bead on a sash window that spoils the look
- Mastic worn away on windows facing the weather
- Crumbling sand mastic round a window
For landlords with property near Winchester station, any sash windows need sound mastic to keep draughts and rain out.
Questions to ask before booking
- Whether all the old sealant comes out first
- When the joint can take water or movement
- What happens if they find a problem under the old sealant
- What the quote includes, VAT included or not
Different surfaces, different methods
Sash and case windows
On a sash window, the mastic joint shows on the outside so we finish it carefully.
Timber door frames
Round a period front door, sand mastic gives the right look.