Essex · England
Stow Maries Sand Mastic
Problem with your window and door surrounds in Stow Maries? We cut out the old, prepare the joints and apply the right sealant.
- Wind and rain getting in round a sash window
- Gaps between timber frames and stone or brick
- Crumbling sand mastic round a window
About our sand mastic in Stow Maries
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. If you are dealing with a silicone bead on a sash window that spoils the look and mastic dropping out of the joint, we can help.
Somewhere as small as Stow Maries, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Whatever the size of the job, you get the same one-year guarantee in Stow Maries and across Essex.
- Location
- Stow Maries (CM3)
- Region
- Essex
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Stow Maries homes and the weather
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.
For site and facilities teams at buildings such as Cold Norton 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 Parish Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For landlords with property near North Fambridge station, any sash windows need sound mastic to keep draughts and rain out.
Stow Maries is about 5 miles south of Maldon, in Essex. Homes, rented property, offices and hotels in Stow Maries can book us for sand mastic, old or new, large or small. Every job comes with our 12-month guarantee. Stow Maries is one of 644 towns and villages in Essex we cover. For nearby work, see our Chelmsford page (9 miles or so).
All of CM3 is covered for sand mastic. If you need sand mastic at a property on The Street, Church Lane and Woodham Road or anywhere close by, our applicators can take on the job. We also cover the places around Stow Maries: Great Canney (1 mile north), Cold Norton (1 mile north-east), Farther Howegreen (1 mile north-east), Howegreen (1 mile north) and North Fambridge (2 miles south-east). Further out, we also cover Chelmsford (9 miles north-west), Basildon (10 miles south-west), Brentwood (15 miles west), Maldon (5 miles north), Canvey Island (10 miles south) and Billericay (10 miles west).
Local landmarks in Stow Maries
We work in homes and buildings around The Prince Of Wales Public House and William de Ferrers School and the streets around them. Stow Maries’s nearest station is North Fambridge station, roughly 1.7 miles south-east. The countryside around Stow Maries includes Stow Maries Halt.
How the job changes by surface
Period and listed homes
Period homes look their best with traditional materials, and sand mastic is one of them.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
The process
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, do the work and clear up. It generally takes a few hours for a single window, longer for several. Somewhere like Stow Maries 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.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
How to prepare
- Try not to wet indoor joints just before the visit
- Let us know about earlier repairs to the joints
- Tell us about any water getting in
Get a quote
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 add photos by email if you can.
Advice
Stow Maries questions
Is Stow Maries in your area for sand mastic?
Yes. Our work covers London and the South East, and Stow Maries is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing.
I let a flat near North Fambridge station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Can new sealant go over the old?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Are you fully insured?
Yes. Mr Mastic is fully insured.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. If you’re redecorating the window, ask us first and we’ll advise.
How long does the job take?
Most jobs take a few hours for a single window, longer for several, including the preparation. We’ll confirm how long when we quote.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us and we are fully insured.
What’s sand mastic made of?
It’s a mix of sand and a linseed-oil-based binder. It’s applied by hand and shaped to suit the surround.
Nearby places to Stow Maries
More services for Stow Maries
Why act early in Stow Maries
Draughts round a sash window aren’t always the sashes. Gaps between the frame and the wall can be just as bad, and renewing the mastic closes them. In a small place like Stow Maries, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Why book with us
- Anti-fungal sanitary silicone in wet areas
- A 12-month guarantee on all work
- Arbo and Everbuild products
- Any old sealant cut out fully, not covered over
Take a look at how sealant jobs are priced and what customers say.
How to look after the new joints
After the cure time, these simple habits help:
- Look over the window mastic once a year
- Go gently near the mastic when preparing windows
- Keep modern sealant off the mastic
- Have rotten timber repaired before new mastic goes in
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
How we quote for sand mastic
We don’t publish a price list, because jobs vary so much. What we look at:
- Mould in or behind the old joints
- Which sealant suits the joint
- When we can work, for business premises
- The old material and how stubborn it is
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
Helping us quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Photos by email, if that’s easy
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
- How many joints, rooms or windows are involved
Need a quote? Please call 0345 464 0079 or email us with a few details. We’ll explain what we’d do and send you a clear quote before we start.
For landlords and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.