Isle of Wight · England
Sand mastic for sash & case windows in Marsh Green, Isle of Wight
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Marsh Green and across the Isle of Wight. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- A silicone bead on a sash window that spoils the look
- Mastic dropping out of the joint
- Open joints round the window box
What the job involves on each surface
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. If your home is listed, ask your local planning authority about consent.
Tenement and terrace windows
Where a building is shared, window work may involve neighbours, so check who is responsible first.
Sand mastic in Marsh Green, done properly
A silicone bead around a sash window can look out of place and isn’t always the right material. Sand mastic is the traditional choice, and we can replace one with the other. We are often asked to deal with cement or filler used on old window joints that has cracked and crumbling sand mastic round a window, across timber door frames, brick reveals and tenement windows.
Somewhere as small as Marsh Green, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Marsh Green (PO30)
- Region
- Isle of Wight
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Look over the window mastic once a year
- Clear gutters so water does not pour onto the windows
- Ask us before painting near the mastic
- Keep modern sealant off the mastic
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
Common questions in Marsh Green
Do you cover smaller places like Marsh Green?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Does living near the coast affect sand mastic in Marsh Green?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
Can old silicone round a sash window be swapped for sand mastic?
Yes, it’s a common request. The old silicone has to come out completely so the mastic beds in well.
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.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
Are you fully insured?
Yes. We are fully insured for domestic and commercial work.
What’s sand mastic made of?
Sand mastic is a traditional material for pointing round windows and doors. It’s made with sand and a linseed-oil-based binder.
Honest limits
New sealant can’t fix everything, and we’ll tell you before any work starts. Sealant will not put right:
- Sash cords, weights and draught-proofing of the sashes
- Planning or listed building consent (your local planning authority decides)
- Decayed frames that need repair
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
Where we work in Marsh Green
- Stone surrounds
- Period & listed homes
- Tenement windows
- Timber door frames
- Brick reveals
- Sash and case windows
The process
Once we are on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours per window, depending on the condition of the joints. Somewhere like Marsh Green needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Before we arrive
- Clear items away from the joints we’re working on
- Mention any parking rules near the property
- Let us know about earlier repairs to the joints
Ask for a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Related advice
What we’re called out for in Marsh Green
Most of it is simply age. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
Keep an eye out for any of the following:
- Failed mastic on an exposed elevation
- Mastic that needs renewing before redecorating
- Open joints round the window box
- Mastic dropping out of the joint
Schools such as Brighstone Church of England Aided Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Before booking anyone
- What product goes in the joint
- What preparation is included
- Who turns up on the day
- When the joint can take water or movement
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
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.
Sand mastic in Marsh Green: local notes
Marsh Green is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. 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, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For an older house near a landmark such as St. Mary's Church, the joint between an old wall and a newer frame is generally the first place rain gets in.
Marsh Green is about 6 miles south-west of Newport, in the Isle of Wight. For sand mastic in and around Marsh Green, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We cover the Isle of Wight from our Crawley base, Marsh Green included. Our the Isle of Wight coverage runs to 125 places, and Marsh Green is one of them. We also work in Southampton, about 19 miles from Marsh Green.
Jobs for sand mastic in PO30 is quoted and booked the same way as anywhere else. Neighbouring places we cover for sand mastic include Chilton Green (1 mile north-west), Hulverstone (2 miles north-west), Brookgreen (2 miles west), Brook (2 miles north-west) and Dunsbury (3 miles north-west). Within a short drive, we also cover Newport (6 miles north-east), Ryde (12 miles north-east), Cowes (9 miles north-east), Sandown (11 miles east), Shanklin (10 miles east) and Ventnor (9 miles east). If you’re somewhere remote, a little more planning is needed, so mention it when you ask for a quote.
Around Marsh Green
We work in homes and buildings around The Three Bishops pub and the streets around them. A little further out are Whitecroft Hospital (5 miles north-east) and Brighstone Village Museum (0.6 miles north-east). Open spaces near Marsh Green include Brighstone Down.
Landlords, agents and businesses in Marsh Green
In hotels, rooms out of use cost money, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
We also work for property managers and facilities teams. We can quote a run of properties together, and we are fully insured.