Hampshire · England
Sand mastic for sash & case windows in Crockerhill, Hampshire
We cover Crockerhill for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly.
- Cement or filler used on old window joints that has cracked
- Mastic dropping out of the joint
- Gaps where the frame meets the masonry
About our sand mastic in Crockerhill
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, and new mastic is applied and shaped by hand. We work on tenement windows, sash and case windows and stone surrounds, and the jobs we see most are failed mastic on an exposed elevation and cement or filler used on old window joints that has cracked.
Around Crockerhill, 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 is covered by our one-year guarantee, wherever you are in Hampshire.
- Where
- Crockerhill (PO17)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
When something else is needed
In fairness, there are a few things sealant will not fix:
- Sash cords, weights and draught-proofing of the sashes
- Broken panes
- Masonry that needs repairing
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Timber door frames
- Brick reveals
- Tenement windows
- Period & listed homes
- Stone surrounds
- Sash and case windows
Looking after it afterwards
To keep the joints looking good and working properly:
- Avoid patching sand mastic with silicone
- Ask us before painting near the mastic
- Keep sills and gutters clear so water drains away
- Find out about consent before window work on a listed home
Do not run silicone over the new mastic. If anything cracks, get it looked at before trying a quick fix.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
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.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Also near Crockerhill
What else we do in Crockerhill
Sand mastic in Crockerhill: local notes
Crockerhill is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. 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.
For an older house near a landmark such as Church of St Nicholas, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Rented homes near Fareham station change hands often, and any sash windows need sound mastic to keep draughts and rain out.
Crockerhill is about 2 miles north of Fareham, in Hampshire. Jobs in Crockerhill get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 683 places in Hampshire are on our list, large and small. Our Portsmouth page covers work nearby, about 7 miles away.
We work across the PO17 postcode area for sand mastic and the streets around it. Neighbouring places we cover for sand mastic include Welborne (1 mile west), Wickham Common (1 mile north-east), North Fareham (1 mile south), Hundred Acres (2 miles north-east) and North Boarhunt (2 miles north-east). We also work in nearby towns such as Winchester (14 miles north-west), Gosport (6 miles south), Havant (9 miles east), Eastleigh (9 miles north-west), Horndean (8 miles east) and Totton (14 miles west).
What’s near Crockerhill
The closest station to Crockerhill is Fareham station, roughly 2.1 miles south. Nearby you’ll also find Knowle Hospital (1 mile west) and Carron Row Farm Museum (2.8 miles south-west). The countryside around Crockerhill includes St Clair's Meadow and Portsdown Hill.
Crockerhill questions
Does living near the coast affect sand mastic in Crockerhill?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
I let a flat near Fareham station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. If you are redecorating the window, ask us first and we will advise.
Do I need to be at home?
It depends on the job. For work indoors, someone needs to let us in.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and you will get one quote.
Is consent needed for window work on a listed home?
Speak to your local planning authority before work starts. Sand mastic is often favoured as like for like, but they decide.
Do you work in Crockerhill?
We do. Our applicators work in Crockerhill, and the service is the same as everywhere else.
Do you need sand mastic in Crockerhill?
Sand mastic slowly weathers. It hardens, cracks and starts to come away from the frame or the masonry.
The most common problems we see are:
- Old cement repairs round a window that have failed
- Gaps where the frame meets the masonry
- Cracked mastic round a front door frame
- Mastic worn away on windows facing the weather
Schools such as The Henry Cort Community College are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Comparing quotes
- What guarantee comes with the work
- Is the old sealant removed completely?
- Whether the sealant suits the joint
- How much experience the applicator has
What affects the cost of sand mastic
There’s no set price list, because no two jobs are the same. The quote depends on:
- Which sealant suits the joint
- Mould in or behind the old joints
- How much there is to do
- The old material and how stubborn it is
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
What to tell us for a quote
There’s no need for technical detail. Just tell us:
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
- What the problem is, such as mould, gaps, leaks or cracking
- The address or postcode of the job
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that’s easy.
What happens on the day
The work is kept neat and contained to the area we are working on, so you can carry on as normal. Expect the work to take a few hours per window, depending on the condition of the joints, and we explain the cure time before we leave. Somewhere like Crockerhill needs a little journey planning: 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.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Mention any parking rules near the property
- Mention any leaks or damp you’ve noticed
- Tell us about any previous sealing or DIY attempts
Getting a quote
For sand mastic in Crockerhill, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
Advice
Why deal with it now?
New mastic over crumbling mastic will not hold. We remove the loose material first so the new mastic stays put. Around Crockerhill, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Why us?
- Homes, businesses and hotels
- Over 20 years’ experience
- Arbo and Everbuild products
- Old sealant always removed completely