Hampshire · England
Sand mastic for sash & case windows in Linwood, Hampshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Linwood. Fully insured, ARBOMaster approved and guaranteed for a year.
- A silicone bead on a sash window that spoils the look
- Window mastic to renew ahead of painting
- Wind and rain getting in round a sash window
When to call us in Linwood
Timber frames move with the seasons. That movement opens up the mastic joint over time.
These are the problems we are asked about most:
- Tired mastic found when preparing windows for paint
- Weathered mastic on the most exposed windows
- Patchy fillers round a sash window
- Open joints round the window box
For jobs in and around Linwood, choosing the right material for each joint is as important as a tidy finish.
Comparing quotes
- Who does the work, and how experienced they are
- What the cure time is
- What insurance they hold
- How hidden problems are handled
How we handle sand mastic in Linwood
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. Renewing it closes the gap and tidies the surround. We work on period & listed homes, tenement windows and brick reveals, and common reasons people get in touch are failed mastic on an exposed elevation and old sand mastic that has cracked, crumbled or fallen out.
Mastic can only go onto a dry, clean joint, so window work in Linwood is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Whatever the size of the job, it’s backed by our 12-month guarantee in Linwood and across Hampshire.
- Location
- Linwood (BH24)
- Wider area
- Hampshire
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Why act early in Linwood
If you are redecorating, renew the mastic first. Paint over cracked mastic won’t stop the gaps and traditional guidance is to leave the new mastic unpainted. Older cottages and farmhouses around Linwood can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, call 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why choose Mr Mastic in Linwood
- 4.9 on Google from 180+ five-star reviews
- Full insurance on every job
- Arbo and Everbuild products
- Tidy, careful work
Can I do it myself?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Windows and doors in Linwood
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Around Linwood, as everywhere, sand mastic is only as good as the preparation behind it.
Linwood is in Hampshire. If you need sand mastic in Linwood, please call 0345 464 0079 or send us an email for a quick quote. We’re based in Crawley and cover Hampshire. Linwood is one of 683 towns and villages in Hampshire where we work. For nearby work, see our Southampton page.
All of BH24 is within our area for sand mastic. We also cover the places around Linwood: South Gorley (2 miles west), Mockbeggar (2 miles west), Highwood (2 miles south-west), Rockford (2 miles south-west) and Hangersley (2 miles south-west). Within a short drive, we also cover Totton (10 miles east), Lymington (12 miles south-east), Romsey (13 miles north-east), Hythe (15 miles east), New Milton (10 miles south) and Ringwood (3 miles south-west).
Landmarks near Linwood
Other landmarks nearby include Fordingbridge Doll Museum (3.6 miles north-west) and Godshill Castle Hill (4.1 miles north). Not far away are Linbrook Lake and Blashford Lakes.
Aftercare tips
Good habits help new joints last longer. Our tips:
- Go gently near the mastic when preparing windows
- Sort the mastic before the decorators arrive
- Don’t run silicone over sand mastic
- Do not paint over the new mastic
Avoid painting over the new mastic, as traditional guidance advises. If you are redecorating, ask us first.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
How we quote for sand mastic
We do not publish a price list. What we look at:
- The old material and how stubborn it is
- How many areas need sealing
- The number and length of the joints
- Whether there’s mould to deal with
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or send us an email and we will talk you through it.
Asking for a quote
Before you ask for a quote, have a think about:
- Whether it’s a home or a business
- Any previous sealing or DIY work
- The rough size of the job
- The address or postcode of the job
Every job is quoted individually. Just ring 0345 464 0079 or email us with the details.
Questions from Linwood
Is there a guarantee on sand mastic in Linwood?
Every job comes with our 12-month guarantee, wherever it is. We are also fully insured and ARBOMaster approved.
Can you do sand mastic in Linwood?
Yes. Our work covers London and the South East, and Linwood is part of that. Just call 0345 464 0079 or email us with a few details of the job.
Do you work for landlords and businesses?
Yes. As well as householders, we work for landlords, agents, businesses and hotels.
Which products do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Can sand mastic be painted?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
Do I need permission for sand mastic on a listed building?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like but the decision is theirs.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply ring 0345 464 0079 or send us an email.
Do you do commercial work?
Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.
Surface by surface
Brick reveals
We rake out the old mastic and pack deep voids before the new mastic goes in.
Timber door frames
Sand mastic is used round timber door frames too. The method is the same as for windows.
Towns and villages near Linwood
More services for Linwood
The process
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes a few hours per window, depending on the condition of the joints from start to finish. Somewhere like Linwood needs a little journey planning: 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.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- 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.
Getting ready for the visit
- Clear items away from the joints we are working on
- Where the joints are inside, avoid wetting them before we arrive
- Keep children and pets away from the work area
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you are ready, call 0345 464 0079 or drop us an email.