Oxfordshire · England
Sand mastic for sash & case windows in Fawley Bottom, Oxfordshire
Sand mastic for Fawley Bottom and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Gaps between timber frames and stone or brick
- Window mastic to renew ahead of painting
- Modern sealant on a period surround
How the job changes by surface
Sash and case windows
On a sash window, the mastic joint shows on the outside so we finish it carefully.
Brick reveals
We rake out the old mastic and pack deep voids before the new mastic goes in.
How we handle sand mastic in Fawley Bottom
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 period homes, it looks right where silicone wouldn’t. We work on timber door frames, period & listed homes and sash and case windows, and people most often call us about cement or filler used on old window joints that has cracked and failed mastic on an exposed elevation.
Around Fawley Bottom, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
Big or small, it’s backed by our 12-month guarantee in Fawley Bottom and across Oxfordshire.
- Place
- Fawley Bottom (RG9)
- Wider area
- Oxfordshire
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Also near Fawley Bottom
More services for Fawley Bottom
How to look after the new joints
Looking after new joints is easy:
- Ask us before painting near the mastic
- Get any rot dealt with first
- Take care around the mastic when scraping paint
- Look over the window mastic once a year
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber, which can lead to rot.
What affects the quote in Fawley Bottom
We quote each job individually. This is what makes a difference:
- The number and length of the joints
- How many rooms, windows or areas are involved
- Any working-time requirements on site
- The product the joint needs
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Asking for a quote
When you call or email, it’s useful to know:
- The problem you’ve noticed
- A few pictures by email, if you can
- Whether it’s a home or a business
- Any access issues, like height or stairs
We don’t publish a price list. Instead, we give you a clear quote for your job. To get started, ring 0345 464 0079 or email us.
When something else is needed
We’d rather tell you now than do work that won’t last, so these are the limits:
- Broken panes
- Whether work needs listed building consent
- Masonry that needs repairing
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think.
Where we work in Fawley Bottom
- Stone surrounds
- Sash and case windows
- Brick reveals
- Tenement windows
- Timber door frames
- Period & listed homes
Fawley Bottom homes and the weather
Historic houses like Stonor Park (about 1.5 miles north) are a reminder that the area around Fawley Bottom has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near St Mary the Virgin's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Fawley Bottom is about 3 miles north of Henley-on-Thames, in Oxfordshire. Every kind of property in Fawley Bottom can book us for sand mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our area takes in 443 places across Oxfordshire, from the larger towns to small villages. You can also see our page for Reading, roughly 9 miles from Fawley Bottom.
Work in RG9 works the same way as everywhere else we cover. If you’re just outside Fawley Bottom, we cover Fawley (1 mile east), Middle Assendon (1 mile south-west), Lower Assendon (1 mile south), Bix (1 mile south-west) and Catslip (2 miles west). Larger places within reach include Didcot (14 miles west), Thame (12 miles north), Benson (8 miles west), Chinnor (9 miles north), Tilehurst (9 miles south-west) and Wallingford (9 miles west).
Near you in Fawley Bottom
Around Fawley Bottom, our work takes us to homes and buildings near The Walnut Tree pub. The closest station to Fawley Bottom is Henley-On-Thames station, about 3 miles south. A little further out are Frazer Nash Archives (3.4 miles south). Not far away are Warburg Nature Reserve.
The process
We keep the work tidy and contained to the area we are working on, so you can carry on as normal. Expect the work to take a few hours for a single window, longer for several, and we explain the cure time before we leave. In a small place like Fawley Bottom, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
How to prepare
- For business premises, tell us about site rules or sign-in
- Let us know if you’ve seen damp or leaks
- For indoor joints, keep the area dry beforehand if you can
Get a quote
For sand mastic in Fawley Bottom, ring 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
Related advice
Fawley Bottom questions
Will you come out to Fawley Bottom?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you work for landlords with property near Henley-On-Thames station?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Do you guarantee sand mastic work?
You get our 12-month guarantee on every job.
Do you have insurance?
Yes. We’re fully insured.
How long will you be here?
Typically it takes anything from a few hours to a full day, depending on how many windows. Bigger jobs take longer, and we will say how long yours will take.
Do you offer different sealant colours?
We’ll suggest a colour to suit the surroundings, from white and clear to greys and other shades. The product needed can limit the range.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
What does sand mastic cost?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You’ll get a clear quote before any work starts.
Why it’s worth doing now in Fawley Bottom
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic suits the building and finishes neatly against the masonry. Older cottages and farmhouses around Fawley Bottom can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Why Fawley Bottom clients choose us
- More than 20 years in sealant work
- Sanitary silicone with an anti-fungal additive in wet areas
- We never seal over old sealant
- Tidy, careful work
Signs you need sand mastic in Fawley Bottom
Paint, silicone or cement used over old mastic causes problems. They don’t move with the timber and we normally remove them.
People normally contact us after spotting something like this:
- Cracked mastic round a front door frame
- Gaps between timber frames and stone or brick
- Crumbling sand mastic round a window
- Draughts and rain around sash boxes
Rented homes near Henley-On-Thames station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- What happens if the job turns out different
- How the joint is cleaned and prepared
- What the cure time is
- Whether VAT is included