Buckinghamshire · England
Sand Mastic in Medmenham
Specialist sand mastic for Medmenham: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Mastic worn away on windows facing the weather
- Old cement repairs round a window that have failed
- Crumbling sand mastic round a window
About our sand mastic in Medmenham
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. We rake it out and renew it and tidies the surround. We work on stone surrounds, timber door frames and brick reveals, and the jobs we see most are silicone on a period window that looks wrong and wind and rain getting in round a sash window.
In a village or hamlet like Medmenham, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
There’s a 12-month guarantee on every job, whatever its size.
- Place
- Medmenham (SL7)
- Wider area
- Buckinghamshire
- Guarantee
- One year on every job
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How it works
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and clear up. Most jobs take anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Medmenham, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- Clear items away from the joints we are working on
- Mention any parking rules near the property
- Let us know about earlier repairs to the joints
How to get a quote
We quote each job on its own, so the first step is telling us about yours. Simply call 0345 464 0079 or email us and describe the job, and photos are welcome.
Advice
Why deal with it now?
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. Older cottages and farmhouses around Medmenham can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why Medmenham customers choose us
- A 12-month guarantee on all work
- We leave the area clean and tidy
- We never seal over old sealant
- Quality sealants from Arbo and Everbuild
Take a look at our cost guide and customer reviews.
Medmenham questions
Do you work for landlords with property near Henley-On-Thames station?
Yes. We work for landlords and agents as well as homeowners. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Is Medmenham within the area you cover?
Yes, Medmenham is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do I need permission for sand mastic on a listed building?
Checking first is sensible. Your local planning authority can say if consent is needed for work on a listed home or in a conservation area.
Can you quote for more than one area?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
Is the work guaranteed?
There’s a 12-month guarantee on every job, sand mastic included.
What sealant do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
What should I tell you?
A short description and the location, with photos by email if possible. We’ll ask anything else we need to know.
What affects the quote in Medmenham
The price is agreed before any work begins. It’s based on:
- How much old sealant there is and how hard it is to remove
- Mould in or behind the old joints
- The product the joint needs
- Access and height
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- How we’d reach the joints
- Any previous sealing or DIY work
- Photos by email, if that is easy
- What’s wrong with the joints now
If you are in Medmenham and need sand mastic, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and you will get a clear quote before any work starts.
Aftercare tips
Looking after new joints is easy:
- Plan mastic work ahead of painting
- Avoid heavy scraping on the mastic joint
- Check with your local planning authority if your home is listed
- Leave the new mastic unpainted
Leave the new mastic alone while it firms up. It forms a skin fairly soon, but takes longer to harden fully.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry so early renewal protects both.
What the job involves on each surface
Sash and case windows
Sash windows are where we do most sand mastic work. We renew the mastic round each box.
Stone surrounds
We take care not to mark the stone when the old mastic comes out.
What sealant work cannot fix
Sealant isn’t the answer to every problem, and we will tell you before we start. It will not solve:
- Decayed frames that need repair
- Crumbling stone or brickwork round the window
- Cracked or broken glass
If you’re not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer.
Surfaces we seal
- Tenement windows
- Timber door frames
- Brick reveals
- Period & listed homes
- Sash and case windows
- Stone surrounds
Can I do it myself?
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.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Medmenham homes and the weather
Historic houses like Harleyford Manor (about 1.3 miles east) are a reminder that the area around Medmenham 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. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you look after a building such as Danesfield School, larger buildings have plenty of frames, and the mastic around each one ages. If you live in an older home near Church of St Peter and St Paul, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Rented homes near Henley-On-Thames station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
Medmenham is about 3 miles south-west of Marlow, in Buckinghamshire. If you need sand mastic in Medmenham, please call 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Buckinghamshire. We cover 263 towns and villages across Buckinghamshire, from the larger towns to small villages. For nearby work, see our Reading page, about 9 miles away.
We cover every part of the SL7 postcode area for sand mastic and the streets around it. We cover properties on Bockmer Lane and Ferry Lane. Neighbouring places we cover for sand mastic include Bockmer End (1 mile north-east), Frogmill (1 mile south-east), Danesfield (1 mile east), Mill End (1 mile west) and Aston (1 mile west). We also work in nearby towns such as High Wycombe (6 miles north-east), Chesham (15 miles north-east), Marlow (3 miles north-east), Amersham (13 miles north-east), Beaconsfield (9 miles north-east) and Chalfont St Peter (13 miles east).
Landmarks near Medmenham
Typical jobs here are in homes near The Dog and Badger pub and the streets around them. Medmenham’s nearest station is Henley-On-Thames station, about 2.9 miles south-west. Other landmarks nearby include Marlow Community Hospital (3.3 miles north-east) and Marlow Museum (2.9 miles east). Green spaces nearby include Hurley Chalk Pit and Weycock Hill.