Oxfordshire · England
Remenham Sand Mastic
Our applicators work in Remenham on 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 that needs renewing before redecorating
- Mastic worn away on windows facing the weather
- Mastic dropping out of the joint
Sand mastic in Remenham, done properly
Sand mastic does not last for ever and gaps open up round the frame. Renewing it closes the gap so the surround looks right again. We work on period & listed homes, timber door frames and tenement windows, and people most often call us about weathered mastic on the most exposed windows and draughts and rain around sash boxes.
Outdoor sealant needs dry, clean surfaces, so work on frames around Remenham is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Location
- Remenham (RG9)
- Wider area
- Oxfordshire
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Leave it or put it right?
Cement-based fillers and modern sealants don’t always suit a period surround. Sand mastic matches what was there, which can matter on listed and conservation-area homes. In a small place like Remenham, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first.
Why choose Mr Mastic in Remenham
- Every job guaranteed for a year
- Fully insured
- Neat joints and a tidy finish
- 180+ five-star Google reviews
Take a look at how sealant jobs are priced or what customers say.
What happens on the day
There is not much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes a few hours for a single window, longer for several. Somewhere like Remenham needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Before we arrive
- Let us know about stairs, lifts or work at height
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any water getting in
Get a quote
We quote each job on its own, so the first step is telling us about yours. Just phone 0345 464 0079 or send us an email with the details.
Related advice
Do you need sand mastic in Remenham?
Age is the main cause. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
The most common problems we see are:
- Failed mastic on an exposed elevation
- Window mastic to renew ahead of painting
- Modern sealant on a period surround
- Draughty sash windows at the surround
For landlords with property near Henley-On-Thames station, any sash windows need sound mastic to keep draughts and rain out.
Questions to ask before you book
- Whether the sealant suits the joint
- What the quote includes, VAT included or not
- Are they insured?
- Is the old sealant removed completely?
Remenham questions
Is Remenham within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Henley-On-Thames station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear price.
Do you have insurance?
Yes, we’re fully insured for every job we do.
Can old silicone round a sash window be swapped for sand mastic?
Usually, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
Is there any odour?
That depends on the sealant. Some products have a noticeable smell, others very little.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status.
What should I tell you?
Just the basics: where it is, what you’ve noticed and how we reach it. Then ring 0345 464 0079 or email us.
Do I have to be there?
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.
Remenham homes and the weather
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Greenlands (about 1 mile north) are a reminder that the area around Remenham 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’s traditional sand mastic.
Schools such as Rupert House School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. In the older streets around Church of St Nicholas, the joint between an old wall and a newer frame is usually the first place rain gets in.
Remenham is about 5 miles west of Marlow, in Oxfordshire. Whether you’re in the middle of Remenham or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Our area takes in 443 places across Oxfordshire, large and small. Our Reading page covers work nearby (8 miles or so).
Our applicators cover all of RG9 for sand mastic. Neighbouring places we cover for sand mastic include Aston (1 mile east), Remenham Hill (1 mile south-east), Mill End (1 mile north-east), Medmenham (2 miles east) and Cockpole Green (2 miles south-east). Further out, we also cover Thame (14 miles north), Benson (10 miles north-west), Chinnor (10 miles north), Tilehurst (9 miles south-west), Wallingford (11 miles west) and Little Heath (9 miles south-west).
Landmarks near Remenham
Locally, jobs take us to homes and businesses close to Old White Horse pub, Fawley Court and Temple Island and Badgemore Primary School and the streets around them. The nearest railway station is Henley-On-Thames station, roughly 1.2 miles south of the centre. A little further out are Frazer Nash Archives (1.4 miles south) and Marlow Community Hospital (5.4 miles east). Not far away are Hurley Chalk Pit.
Different surfaces, different methods
Stone surrounds
Stone openings are rarely perfectly straight, so the gap is not the same all the way round. Sand mastic is shaped by hand to suit.
Brick reveals
Sand mastic is also used where timber frames meet brick. It gives a traditional finish.
DIY sealant or a professional job?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Places near Remenham
Other services in Remenham
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Inspect the joints round the windows every year or so
- Plan mastic work ahead of painting
- Take care around the mastic when scraping paint
- Ask the planning authority about consent for listed or conservation-area homes
Leave the new mastic unpainted, which is the traditional advice. If you are redecorating, ask us first.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry so early renewal protects both.
What affects the quote in Remenham
There’s no set price list, because jobs vary so much. The quote depends on:
- How easy the joints are to reach
- The size of the job
- Working hours on commercial sites
- Which sealant suits the joint
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- If it’s domestic, commercial or a hotel
- Pictures of the joints, sent by email
- What’s wrong with the joints now
- How we’d reach the joints
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, call 0345 464 0079 or drop us an email.