Buckinghamshire · England
Mundaydean Bottom Sand Mastic
Window and door surrounds in Mundaydean Bottom need attention? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Open joints round the window box
- Tired mastic found when preparing windows for paint
- Mastic dropping out of the joint
Sand mastic for homes and businesses in Mundaydean Bottom
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. We work on stone surrounds, brick reveals and period & listed homes, and people most often call us about gaps between timber frames and stone or brick and old cement repairs round a window that have failed.
Somewhere as small as Mundaydean Bottom, 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.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Mundaydean Bottom (SL7)
- Region
- Buckinghamshire
- Cover
- 12 months on all our work
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How we quote for sand mastic
There’s no set price list, because jobs vary so much. What we look at:
- Whether there’s mould to deal with
- The old material and how stubborn it is
- Access and height
- The size of the job
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first.
Asking for a quote
To help us quote quickly, please include:
- How many joints, rooms or windows are involved
- Photos by email, if that is easy
- If someone has resealed it before
- Where the job is, and your postcode
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, phone 0345 464 0079 or send us an email.
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How it works
You do not need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the job takes a few hours per window, depending on the condition of the joints for a typical job. Somewhere as small as Mundaydean Bottom, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Before we arrive
- Mention any sign-in or site rules at work premises
- Mention any tricky access
- Keep children and pets away from the work area
How to get a quote
For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before any work starts.
Read more
Windows and doors in Mundaydean Bottom
Historic houses like Harleyford Manor (about 2.3 miles south) are a reminder that the area around Mundaydean Bottom has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Letting a property close to Marlow station? Then any sash windows need sound mastic to keep draughts and rain out. In the older streets around St Mary the Virgin, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. If you look after a building such as Burford School, the mastic around its windows and doors needs looking after like any other building’s.
Mundaydean Bottom is about 2 miles north-west of Marlow, in Buckinghamshire. Whether you are in the middle of Mundaydean Bottom or further out, we cover sand mastic for every kind of property. Across Buckinghamshire, we cover 263 places, and Mundaydean Bottom is one of them. Reading is on our list too, about 12 miles from Mundaydean Bottom.
We cover every part of SL7 for sand mastic. Nearby, we also carry out sand mastic in Bovingdon Green (1 mile south), Marlow Common (1 mile south), Chisbridge Cross (1 mile north-west), Bockmer End (2 miles south-west) and Danesfield (2 miles south). We also work in nearby towns such as High Wycombe (4 miles north-east), Chesham (12 miles north-east), Amersham (11 miles north-east), Beaconsfield (7 miles east), Chalfont St Peter (11 miles east) and Southcourt (15 miles north).
Local landmarks in Mundaydean Bottom
Typical jobs here are in homes near The Royal Oak pub and Sir William Borlase's Grammar School and the streets around them. For rail, the closest station is Marlow station, roughly 1.9 miles south-east. Other landmarks nearby include Chiltern Sound Phonograph Museum (1.5 miles south-east) and Marlow Community Hospital (1.7 miles south-east). The countryside around Mundaydean Bottom includes Carpenter's Wood.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Go gently near the mastic when preparing windows
- Ask the planning authority about consent for listed or conservation-area homes
- Keep modern sealant off the mastic
- Look over the window mastic once a year
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
Common questions in Mundaydean Bottom
Do you work for landlords with property near Marlow station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Do you cover smaller places like Mundaydean Bottom?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
When will the new mastic be hard?
Not straight away. The skin forms first, and the full set comes later and we will give you an idea for your job.
Should I check with the council before work on a listed or conservation-area home?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like but the decision is theirs.
Will the old sealant be removed?
Yes, every time. New sealant will not bond properly to old, so the joint is cleaned back first.
What do you put in the joint?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
Will there be a smell?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
For anyone letting property in or around Mundaydean Bottom, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
What sealant work can’t fix
Some problems need a builder, plumber or other trade rather than us:
- Planning or listed building consent (your local planning authority decides)
- Rotten sashes, sills or window boxes (a joiner’s job)
- Broken panes
If you’re not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Stone surrounds
- Tenement windows
- Sash and case windows
- Timber door frames
- Period & listed homes
- Brick reveals
Different surfaces, different methods
Period and listed homes
Materials matter on listed and conservation-area homes. Sand mastic is often the preferred finish.
Tenement and terrace windows
Windows above ground floor need the right access. Let us know the floor and we will confirm access.
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.