Oxfordshire · England
Britwell Salome Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Britwell Salome. Fully insured, ARBOMaster approved and guaranteed for a year.
- Mastic round period door frames that has failed
- Failed mastic on an exposed elevation
- Old cement repairs round a window that have failed
About our sand mastic in Britwell Salome
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted and we will advise if you are redecorating. If you have tired mastic found when preparing windows for paint and cement or filler used on old window joints that has cracked, we can help.
Around Britwell Salome, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Where
- Britwell Salome (OX49)
- Wider area
- Oxfordshire
- Cover
- A year, on every job
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Frames and glazing around Britwell Salome
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. With historic houses such as Adwell House (about 4.3 miles north-east) nearby, there’s older building stock in the area around Britwell Salome as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
If you look after a building such as Icknield Community College, larger buildings have plenty of frames, and the mastic around each one ages.
Britwell Salome is about 8 miles south of Thame, in Oxfordshire. If you need sand mastic in Britwell Salome, please ring 0345 464 0079 or send us an email for a quick quote. We are based in Crawley and cover Oxfordshire. Across Oxfordshire, we cover 443 places, and Britwell Salome is one of them. You can also see our page for Oxford, about 12 miles away.
Our applicators cover all of the OX49 postcode area for sand mastic and the streets around it. Whether your property is on Turners Green and Turner's Green Lane or a nearby road, our applicators can take on the job. Main roads around Britwell Salome include the B4009. Neighbouring places we cover for sand mastic include Watlington (1 mile north-east), Brightwell Baldwin (1 mile north-west), Ewelme (2 miles south-west), Pyrton (2 miles north-east) and Roke (3 miles west). Larger places within reach include Oxford (12 miles north-west), Didcot (9 miles west), Abingdon-on-Thames (11 miles west), Thame (8 miles north), Henley-on-Thames (9 miles south-east) and Benson (3 miles west).
Around Britwell Salome
Typical jobs here are in homes near The Red Lion Inn Public House, among other places. Nearby you’ll also find Wallingford Castle (4.4 miles south-west). For a walk, there’s Ewelme Watercress Beds and Bald Hill.
Common questions in Britwell Salome
Will you come out to Britwell Salome?
Yes. Britwell Salome is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is there a guarantee on sand mastic in Britwell Salome?
All our work, in Britwell Salome and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
How long does sand mastic take to go off?
It takes a while. It skins first and hardens fully later, and we’ll tell you what to expect.
How long will you be here?
Typically it takes anything from a few hours to a full day, depending on how many windows. Larger jobs naturally take longer, and we will say how long yours will take.
Is it possible to paint over sand mastic?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Talk to us before any painting near it.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
I’m a tenant. Can you help?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Why deal with it now?
Silicone might seem the quicker option, but it can look wrong on a period surround. Sand mastic is the traditional material and finishes neatly against the masonry. Around Britwell Salome, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why choose Mr Mastic in Britwell Salome
- Tidy, careful work
- We’re fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
- 180+ five-star Google reviews
Take a look at how sealant jobs are priced or customer reviews.
Landlord and commercial work in Britwell Salome
Letting agents and landlords in Britwell Salome can book us as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
Towns and villages near Britwell Salome
Also in Britwell Salome
When something else is needed
To be straight with you, there are a few things sealant will not fix:
- Damaged stone surrounds
- Sashes that rattle, stick or won’t open
- Timber that has rotted
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before booking.
Where we work in Britwell Salome
- Brick reveals
- Timber door frames
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Tenement windows
Looking after it afterwards
After the cure time, these simple habits help:
- Plan mastic work ahead of painting
- Leave the new mastic unpainted
- Keep sills and gutters clear so water drains away
- Avoid heavy scraping on the mastic joint
Keep gutters and sills clear so water runs away from the surround. Constant wetting wears the mastic faster.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.
Common problems we fix in Britwell Salome
Over the years, sand mastic weathers. It dries out, cracks and loses its grip on the stone or timber.
The problems people usually mention when they call include:
- Mastic that needs renewing before redecorating
- Open joints round the window box
- Crumbling sand mastic round a window
- Draughty sash windows at the surround
For an older house near a landmark such as Church of St Nicholas, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Questions to ask before you book
- Are they insured?
- How the surfaces are prepared before sealing
- The length of the guarantee
- How much experience the applicator has
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
What we do, step by step
We keep the work tidy and contained to the joints we’re treating, so you can get on with your day. Expect the work to take anything from a few hours to a full day, depending on how many windows, and we tell you how long to leave it before we go. For a village or hamlet like Britwell Salome, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- We dress the surface so it sits neatly against the masonry.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Let us know about parking restrictions
- Tell us about any previous sealing or DIY attempts
Ask for a quote
Want a quote for sand mastic? Please call 0345 464 0079 or email us with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.