Buckinghamshire · England
Sand mastic for sash & case windows in Princes Risborough, Buckinghamshire
We cover Princes Risborough for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly.
- Mastic dropping out of the joint
- A silicone bead on a sash window that spoils the look
- Weathered mastic on the most exposed windows
Questions from Princes Risborough
Do you cover Princes Risborough for sand mastic?
Yes. We work across London and the South East, and Princes Risborough is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job, and we’ll send you a clear quote.
Can you help a landlord with a rental near Princes Risborough station?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear quote.
Can you do several jobs on one visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Which is right for my windows, sand mastic or modern sealant?
It depends on the window. Period windows in stone or brick normally suit sand mastic and newer frames usually get a flexible sealant.
Do you take out the old sealant first?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
How long will you be here?
It depends on the size of the job, but as a guide it takes anything from a few hours to a full day, depending on how many windows. We’ll give you a better idea when we quote.
Are you fully insured?
Yes. We are fully insured.
Do the sealants smell?
It depends on the product. Some products have a noticeable smell, others very little.
Sand mastic in Princes Risborough
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. We work on tenement windows, period & listed homes and sash and case windows, and common reasons people get in touch are old cement repairs round a window that have failed and open joints round the window box.
In smaller places like Princes Risborough, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. Each frame material needs the right sealant against the right wall.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or drop us an email.
- Where
- Princes Risborough (HP27)
- Region
- Buckinghamshire
- Guarantee
- 12 months on all our work
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Honest limits
We will always be straight with you, so here’s what new sealant will not do:
- Decayed frames that need repair
- Damaged stone surrounds
- Cracked or broken glass
If you are not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer before booking.
Where we work in Princes Risborough
- Tenement windows
- Stone surrounds
- Sash and case windows
- Timber door frames
- Brick reveals
- Period & listed homes
Princes Risborough homes and 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.
If you live in an older home near St Teresa's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Rented homes near Princes Risborough station change hands often, and any sash windows need sound mastic to keep draughts and rain out. Schools such as Princes Risborough School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Princes Risborough is about 6 miles south of Aylesbury, in Buckinghamshire. From the centre of Princes Risborough to the outskirts, we cover sand mastic for every kind of property. We cover 263 towns and villages across Buckinghamshire, large and small. Our Oxford page covers work nearby.
All of HP27 is within our area for sand mastic. If you need sand mastic at a property on High Street, Malthouse Square and Station Road or a nearby road, we can help. Princes Risborough sits on or near the A4010 and A4129. Neighbouring places we cover for sand mastic include Alscot (1 mile north-west), Monks Risborough (1 mile north), Whiteleaf (1 mile north-east), Horsenden (1 mile west) and Askett (1 mile north-east). Further out, we also cover Aylesbury (6 miles north), High Wycombe (7 miles south-east), Chesham (9 miles east), Marlow (11 miles south), Amersham (10 miles east) and Beaconsfield (11 miles south-east).
What’s near Princes Risborough
In Princes Risborough, that means homes and buildings near Princes Risborough Primary School and The George And Dragon pub. Princes Risborough’s nearest station is Princes Risborough station, about 0.7 miles south-west of the centre. A little further out are Great Kimble Dial Hill (1.9 miles north-east) and Stoke Mandeville Hospital (5.3 miles north). Open spaces near Princes Risborough include Brush Hill Local Nature Reserve and Beacon Hill.
How to look after the new joints
After the cure time, these simple habits help:
- Find out about consent before window work on a listed home
- Keep sills and gutters clear so water drains away
- Plan mastic work ahead of painting
- Ask a joiner to look at soft timber first
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look rather than patching it.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry so early renewal protects both.
For landlords and businesses
We also work for property managers and facilities teams. We can quote a run of properties together.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
How the job changes by surface
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
Brick reveals
An open joint at a brick reveal lets weather in. New mastic seals the gap.
Places near Princes Risborough
What else we do in Princes Risborough
What happens on the day
We bring everything the job needs with us, so there’s nothing for you to buy. Once we have agreed what’s being done, the area is protected and the work begins. It normally takes a few hours for a single window, longer for several. For a job in Princes Risborough, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- Mention if the joints have been sealed before
- Clear items away from the joints we are working on
- Let us know about parking restrictions
Getting a quote
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or send us an email.
Advice
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
What affects the quote in Princes Risborough
We don’t publish a price list, because no two jobs are the same. The quote depends on:
- The amount of work
- How many areas need sealing
- The product the joint needs
- Any mould that needs treating
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Asking for a quote
What to tell us when you ask for a quote:
- If someone has resealed it before
- The problem you’ve noticed
- The type of property
- Where the property is
Asking for a quote is easy: tell us what needs doing and where and its rough size. Photos by email help us understand the job, and we will come back to you with a quote.