Oxfordshire · England
Checkendon Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Checkendon. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Weathered mastic on the most exposed windows
- A silicone bead on a sash window that spoils the look
- Cement or filler used on old window joints that has cracked
Sand mastic in Checkendon, done properly
Across Checkendon, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand for a neat, traditional finish. We work on stone surrounds, period & listed homes and timber door frames, and common reasons people get in touch are silicone on a period window that looks wrong and draughty sash windows at the surround.
In a village or hamlet like Checkendon, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
There’s a 12-month guarantee on every job.
- Place
- Checkendon (RG8)
- Region
- Oxfordshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Aftercare tips
After the cure time, these simple habits help:
- Avoid heavy scraping on the mastic joint
- Inspect the joints round the windows every year or so
- Avoid patching sand mastic with silicone
- Renew mastic before redecorating the windows
Leave the new mastic alone while it firms up. It skins over quickly, but takes longer to harden fully.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber, which can lead to rot.
Windows and doors in Checkendon
With historic houses such as Greys Court (about 3.5 miles east) nearby, there’s older building stock in the area around Checkendon as well as newer homes. Where a home is older, 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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Rented homes near Goring & Streatley station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. For an older house near a landmark such as St Peter and St Paul, the joint between an old wall and a newer frame is generally the first place rain gets in.
Checkendon is about 6 miles north-west of Caversham, in Oxfordshire. Jobs in Checkendon get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 443 towns and villages across Oxfordshire. There’s also a page for Reading, about 7 miles away.
Every address in RG8 is within our area for sand mastic, from the main roads to the quietest streets. Whether your property is on Uxmore Road, Whitehall Lane and Lovegrove's Lane or anywhere close by, we can help. Other places close to Checkendon include Stoke Row (1 mile east), Hook End (1 mile south), Woodcote (2 miles south-west), Heath End (2 miles north) and Ipsden (2 miles north-west). Larger places within reach include Didcot (10 miles north-west), Abingdon-on-Thames (14 miles north-west), Thame (14 miles north), Henley-on-Thames (6 miles east), Benson (6 miles north-west) and Chinnor (12 miles north-east).
What’s near Checkendon
In Checkendon, that means homes and buildings near Langtree School and The Black Horse pub and the streets around them. Checkendon’s nearest station is Goring & Streatley station, about 4.4 miles south-west. For a walk, there’s Hartslock.
For landlords and businesses
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
Common problems we fix in Checkendon
Sand mastic slowly weathers. It hardens, cracks and starts to come away from the frame or the masonry.
The most common problems we see are:
- A silicone bead on a sash window that spoils the look
- Cracked mastic round a front door frame
- Old sand mastic that has cracked, crumbled or fallen out
- Mastic worn away on windows facing the weather
Schools such as Checkendon Church of England (A) Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Before you book anyone
- What preparation is included
- Whether all the old sealant comes out first
- Which sealant they’ll use, and why
- What happens if they find a problem under the old sealant
Common questions in Checkendon
Is Checkendon in your area for sand mastic?
Yes. We work across London and the South East, and Checkendon is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing.
I let a flat near Goring & Streatley station. Can you help?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before work begins.
How long does sand mastic take to go off?
The surface skins quite quickly and it hardens fully over a longer time. The weather and joint depth both affect it.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
How do I get a quote for sand mastic in Checkendon?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You will get a clear quote before work begins.
Can you match the sealant colour?
We help you choose a colour that suits. The product needed can limit the range.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Where do you work from?
We’re based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Leave it or put it right?
Cement-based fillers and modern sealants do not always suit a period surround. Sand mastic is the like-for-like choice and that can be important for listed homes. Older cottages and farmhouses around Checkendon can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
What you get with us
- We leave the area clean and tidy
- Homes, businesses and hotels
- Sanitary silicone with an anti-fungal additive in wet areas
- Trusted Arbo and Everbuild sealants
The process
There’s no need to move everything out before we come, just the space around the work. We protect the rest, and the work takes anything from a few hours to a full day, depending on how many windows for a typical job. For a village or hamlet like Checkendon, 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.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Before we arrive
- Keep children and pets away from the work area
- On commercial sites, let us know about site rules
- Clear the area around the work
How to get a quote
We quote each job on its own, so the first step is telling us about yours. Just ring 0345 464 0079 or email us with the details and send pictures if you have them.
Advice
Also in Checkendon
Quotes for sand mastic in Checkendon
The quote reflects the job in front of us. We look at:
- When we can work, for business premises
- Access and height
- Any mould that needs treating
- The number and length of the joints
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
What to tell us for a quote
To help us quote quickly, please include:
- Any access issues, like height or stairs
- If someone has resealed it before
- Roughly how big the job is
- If it’s domestic, commercial or a hotel
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.