Windsor and Maidenhead · England
Sand Mastic in Holyport
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Holyport and across Windsor and Maidenhead. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cracked mastic round a front door frame
- Old cement repairs round a window that have failed
- Window mastic to renew ahead of painting
FAQs for Holyport
Is Holyport in your area for sand mastic?
Yes, Holyport is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or drop us an email and tell us what needs doing.
Can you help a landlord with a rental near Maidenhead station?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or send us an email and tell us about the property, and we will send you a clear quote.
Where is Mr Mastic based?
We are a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
How much does sand mastic cost in Holyport?
It depends on the job, so we quote each one individually. To get one, call 0345 464 0079 or drop us an email with a short description of the job.
How long will you be here?
It depends on the size of the job, but most jobs take a few hours per window, depending on the condition of the joints. We will tell you when we quote.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we will agree access with you when we book.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
What’s sand mastic made of?
Sand plus a binder based on linseed oil. It’s applied by hand and shaped to suit the surround.
Sand mastic for homes and businesses in Holyport
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditional guidance is not to paint over it and we will advise if you are redecorating. We’re often asked to deal with gaps round a timber door in stone or brick and draughty sash windows at the surround, on tenement windows, timber door frames and sash and case windows.
In a village or hamlet like Holyport, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Holyport (SL6)
- Region
- Windsor and Maidenhead
- Guarantee
- A year, on every job
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
For landlords and businesses
If you manage several properties in or around Holyport, several properties can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
Letting agents often deal with us directly. Tell us the address, the job and how access works.
What we do, step by step
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the job takes a few hours per window, depending on the condition of the joints in most cases. Somewhere like Holyport 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 isn’t too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
How to prepare
- Mention any leaks or damp you’ve noticed
- Mention any parking rules near the property
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
For sand mastic in Holyport, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Related advice
What affects the cost of sand mastic
You’ll get a clear quote before any work starts. It’s based on:
- Whether the work is at height
- The size of the job
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
Asking for a quote
When you contact us, these details help:
- The address or postcode of the job
- How we’d reach the joints
- Whether it’s a home or a business
- A few pictures by email, if you can
We quote each job on its own, so the first step is telling us about yours. Just phone 0345 464 0079 or email us with the details.
Leave it or put it right?
An open joint round the frame lets weather in. Water can get to the frame and the masonry so renewing it early protects the window. In a small place like Holyport, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
What you get with us
- Full insurance on every job
- Experience in homes, commercial sites and hotels
- Tidy, careful work
- 4.9 on Google from 180+ five-star reviews
What sand mastic looks like in Holyport
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Dorney Court (about 2.2 miles east) nearby, there’s older building stock in the area around Holyport as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Letting a property close to Maidenhead station? Then any sash windows need sound mastic to keep draughts and rain out. For site and facilities teams at buildings such as Holyport CofE Primary School, the mastic around its windows and doors needs looking after like any other building’s. Dorney Court, about 2.2 miles east, is one of the historic houses in the wider area around Holyport, and older homes nearby need a sealant that suits their walls.
Holyport is about 2 miles south of Maidenhead, in Windsor and Maidenhead. Every kind of property in Holyport can book us for sand mastic. The work is guaranteed for a year. Our area takes in 57 places across Windsor and Maidenhead, from the larger towns to small villages. Our Reading page covers work nearby (12 miles or so).
Every address in SL6 is within our area for sand mastic. Streets in the area include Ascot Road, Holyport Street and Hearne Drive, and we cover them all. Other places close to Holyport include Moneyrow Green (1 mile south), Stud Green (1 mile west), Touchen-end (1 mile south-west), Paley Street (2 miles south-west) and Braywoodside (2 miles south-west). Within a short drive, we also cover Windsor (4 miles east), North Ascot (5 miles south), Cookham (4 miles north), Furze Platt (3 miles north), Dedworth (3 miles east) and Broomhall (8 miles south-east).
Local landmarks in Holyport
In Holyport, that means homes and buildings near Holyport College, The Belgian Arms and Ockwells Park, among other places. The closest station to Holyport is Maidenhead station, about 1.8 miles north. Well-known places in the area include St Mark's Hospital (2.5 miles north-west) and Windsor Castle (4.9 miles east). Not far away are Weycock Hill and Taplow Lake.
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Keep modern sealant off the mastic
- Renew mastic before redecorating the windows
- Do not paint over the new mastic
- Take care around the mastic when scraping paint
Leave the new mastic unpainted, as traditional guidance advises. If you’re redecorating, ask us first.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
Places near Holyport
What else we do in Holyport
What the job involves on each surface
Period and listed homes
Many older homes were built with sand mastic round the windows. If your home is listed, ask your local planning authority about consent.
Sash and case windows
On a sash window, the mastic joint shows on the outside, so a neat, even finish matters.
DIY sealant or a professional job?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.