Oxfordshire · England
Sand Mastic in Chawley
Our applicators work in Chawley on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Mastic dropping out of the joint
- Mastic that needs renewing before redecorating
- Cement or filler used on old window joints that has cracked
Sand mastic in Chawley
We renew sand mastic around sash windows and doors in stone and brick. The old mastic is raked out, and new mastic is applied and shaped by hand. We work on tenement windows, sash and case windows and period & listed homes, and the jobs we see most are silicone on a period window that looks wrong and gaps round a timber door in stone or brick.
In a village or hamlet like Chawley, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
Every job is covered by our one-year guarantee, wherever you are in Oxfordshire.
- Location
- Chawley (OX2)
- Region
- Oxfordshire
- Cover
- A year, on every job
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
The process
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours per window, depending on the condition of the joints. In a small place like Chawley, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- 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.
Preparing for the visit
- Keep children and pets away from the work area
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any water getting in
Getting a quote
To get a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. We will give you a clear quote before any work starts.
Advice
FAQs for Chawley
Is Chawley in your area for sand mastic?
Yes, Chawley is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or drop us an email and let us know what needs doing.
Can you help a landlord with a rental near Oxford station?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we’re fully insured.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
Which is right for my windows, sand mastic or modern sealant?
We will talk it through with you. Sand mastic suits many period homes and newer frames suit modern sealant.
Can new sealant go over the old?
No, and we never do. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll advise.
Places near Chawley
Also in Chawley
Keeping the joints in good condition
How long the joints last depends on use and care. Here’s what we suggest:
- Check with your local planning authority if your home is listed
- Inspect the joints round the windows every year or so
- Avoid patching sand mastic with silicone
- Make sure water runs off the sill
When preparing windows for paint, take care around the mastic. Hard scraping can loosen it.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.
Landlords, agents and businesses in Chawley
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
What sand mastic looks like in Chawley
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Appleton Manor (about 2.5 miles south-west) nearby, there’s older building stock in the area around Chawley 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.
For site and facilities teams at buildings such as Cumnor Church of England School (Voluntary Controlled), larger buildings have plenty of frames, and the mastic around each one ages. Letting a property close to Oxford station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Chawley is about 4 miles west of Oxford, in Oxfordshire. If you need sand mastic in Chawley, please call 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Oxfordshire. We cover 443 towns and villages across Oxfordshire, large and small.
Every address in OX2 is covered for sand mastic. That includes homes and businesses on Cumnor Hill, Chawley Park and Chawley Lane. Other places close to Chawley include Cumnor (1 mile south-west), Dean Court (1 mile north-east), Botley (1 mile north-east), Filchampstead (1 mile north-west) and Henwood (1 mile south). Further out, we also cover Oxford (4 miles east), Didcot (9 miles south), Bicester (13 miles north-east), Abingdon-on-Thames (4 miles south), Witney (8 miles north-west) and Carterton (12 miles west).
Around Chawley
In Chawley, that means homes and buildings near The Vine Inn, Matthew Arnold School and Raleigh Park and the streets around them. The closest station to Chawley is Oxford station, about 2.4 miles north-east of the centre. Other landmarks nearby include Oxford Castle and earlier settlement remains (2.6 miles north-east) and Westgate Shopping Centre (2.7 miles east). For a walk, there’s Lashford Lane Fen and Cumnor Hill.
Leave it or put it right?
Draughts round a sash window aren’t always the sashes. Open mastic joints round the box can let air in and new mastic seals them. Where a wall is exposed, as many are in small places like Chawley, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
What you get with us
- Anti-fungal silicone where joints get wet
- Old sealant always removed completely
- More than 20 years in sealant work
- 12-month guarantee on every job
What sealant work can’t fix
Some problems need a builder, plumber or other trade rather than us:
- Timber that has rotted
- Sashes that rattle, stick or won’t open
- Cracked or broken glass
If you are not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
What we seal
- Timber door frames
- Brick reveals
- Sash and case windows
- Tenement windows
- Stone surrounds
- Period & listed homes
Common problems we fix in Chawley
Decorating can disturb tired mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
People normally contact us after spotting one of these:
- Mastic dropping out of the joint
- Window mastic to renew ahead of painting
- Cement or filler used on old window joints that has cracked
- Mastic worn away on windows facing the weather
If you live in an older home near Church of St Michael, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What your quote should include
- How the colour is chosen
- Is the old sealant removed completely?
- What product goes in the joint
- What preparation is included
What affects the quote in Chawley
For a quick quote, just ask. What matters most is:
- Working hours on commercial sites
- Whether the work is at height
- The amount of work
- Which sealant suits the joint
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or send us an email and we will talk you through it.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- Any access issues, like height or stairs
- If someone has resealed it before
- A few photos by email, if you can
- If it’s domestic, commercial or a hotel
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we will explain what’s involved.