Hampshire · England
Shedfield Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Shedfield, backed by a one-year guarantee. Ask us for a quote.
- Cracked mastic round a front door frame
- Patchy fillers round a sash window
- Failed mastic on an exposed elevation
Sand mastic in Shedfield
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. If you’re dealing with mastic dropping out of the joint and modern sealant on a period surround, we can help.
Around Shedfield, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
Every job comes with a 12-month guarantee, wherever you are in Hampshire.
- Place
- Shedfield (SO32)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Ask a joiner to look at soft timber first
- Leave the new mastic unpainted
- Keep sills and gutters clear so water drains away
- Sort the mastic before the decorators arrive
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens as more mastic falls out.
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Different surfaces, different methods
Period and listed homes
Many older homes were built with sand mastic round the windows. On listed buildings, check with your planning authority first.
Brick reveals
An open joint at a brick reveal lets weather in. Renewing the mastic closes it.
Windows and doors in Shedfield
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Homes close to Church of St John include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in. For site and facilities teams at buildings such as St John the Baptist Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Shedfield is about 4 miles north of Fareham, in Hampshire. We provide sand mastic to householders, landlords and businesses in Shedfield and the surrounding area, as part of our work across Hampshire. Shedfield is one of 683 places in Hampshire where we work for sand mastic. Our Southampton page covers work nearby (8 miles or so).
Work in SO32 is quoted and booked the same way as anywhere else. We cover properties on High Street, Upper Church Road and Church Road. Nearby, we also carry out sand mastic in Shirrell Heath (1 mile north-east), Wickham (1 mile south-east), Kingsmead (1 mile east), Mislingford (2 miles north-east) and Swanmore (2 miles north). Larger places within reach include Winchester (11 miles north-west), Gosport (8 miles south), Havant (10 miles east), Eastleigh (7 miles north-west), Fareham (4 miles south) and Horndean (8 miles east).
Local landmarks in Shedfield
Locally, jobs take us to homes and businesses close to Samuel's Rest pub and Swanmore College of Technology and the streets around them. For rail, the closest station is Botley station, about 2.6 miles west of the centre. Well-known places in the area include Knowle Hospital (2.4 miles south) and Bishop's Waltham Museum (2.8 miles north). Green spaces nearby include Bishops Waltham Branch LNR.
Nearby places to Shedfield
Also in Shedfield
Landlords, agents and businesses in Shedfield
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Quotes for sand mastic in Shedfield
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Access and height
- Whether there’s mould to deal with
- The size of the job
- How much old sealant there is and how hard it is to remove
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.
Helping us quote
Before you ask for a quote, have a think about:
- The problem you’ve noticed
- A few photos by email, if you can
- Access, such as stairs, a lift or height
- Where the property is
If you’re in Shedfield and need sand mastic, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
What happens on the day
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we have agreed what’s being done, we protect the area and start. It normally takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Shedfield, 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.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Move anything stored near the joints
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
To get a quote, call 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before any work starts.
Advice
Do you need sand mastic in Shedfield?
Some old mastic was never deep enough. Mastic that is too thin cracks and drops out so we make sure the new mastic is the right thickness.
People normally contact us when they notice one of these:
- Failed mastic on an exposed elevation
- Silicone on a period window that looks wrong
- Cracked mastic round a front door frame
- Gaps between timber frames and stone or brick
If you let a flat or house near Botley station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Comparing quotes
- When the joint can take water or movement
- Whether VAT is included
- Which colour the sealant will be
- How the surfaces are prepared before sealing
Shedfield: your questions answered
I let a flat near Botley station. Can you help?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Is Shedfield in your area for sand mastic?
Yes, Shedfield is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Do the sealants smell?
That depends on the sealant. Some products have a noticeable smell, others very little.
What do you need from me for a quote?
Tell us what needs doing and where, with pictures by email if possible. If we need more, we will ask.
Are you fully insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
Do I need permission for sand mastic on a listed building?
Speak to your local planning authority before work starts. Sand mastic is often favoured as like for like, but they decide.
When will the new mastic be hard?
It skins over fairly quickly but takes longer to harden fully. We will explain what to expect before we leave.