Hampshire · England
Chineham Sand Mastic
Problem with your window and door surrounds in Chineham? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Draughty sash windows at the surround
- Mastic dropping out of the joint
- Cement or filler used on old window joints that has cracked
Leave it or put it right?
If you’re redecorating, renew the mastic first. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. Homes in smaller places like Chineham can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
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.
What you get with us
- Sanitary silicone with an anti-fungal additive in wet areas
- Domestic, commercial and hotel work
- We are fully insured
- More than 20 years in sealant work
Take a look at our cost guide or what customers say.
How we handle sand mastic in Chineham
Burnt sand mastic is a traditional material blends with stone and brick surrounds. It suits period and listed homes where a modern sealant bead would stand out. We’re often asked to deal with crumbling sand mastic round a window and mastic that needs renewing before redecorating, on period & listed homes, stone surrounds and brick reveals.
Homes around Chineham range from older properties to newer houses, and their windows range just as widely. Each frame material needs the right sealant against the right wall.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Where
- Chineham (RG24, RG27)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What sand mastic looks like in Chineham
With historic houses such as The Vyne (about 2 miles north-west) nearby, there’s older building stock in the area around Chineham 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. 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.
If you live in an older home near Christ Church Chineham, the joint between an old wall and a newer frame is generally the first place rain gets in. For site and facilities teams at buildings such as Four Lanes Community Junior School, its window and door frames need their mastic kept sound, just like a home’s.
Chineham is about 3 miles north-east of Basingstoke, in Hampshire. Wherever you are in the RG24 postcode area, we can carry out sand mastic at your property. Chineham is one of 683 towns and villages in Hampshire where we work. We also work in Reading, around 11 miles away.
Every address in RG24 and RG27 is within our area for sand mastic. If you need sand mastic at a property on Bowman Road, Cufaude Lane and Cibbons Road or anywhere close by, we can help. Main roads around Chineham include the A33, so getting to you is simple. Neighbouring places we cover for sand mastic include Lychpit (1 mile south), Wildmoor (1 mile east), Popley (1 mile west), Old Basing (2 miles south) and Water End (2 miles south-east). Larger places within reach include Basingstoke (3 miles south-west), Farnborough (12 miles east), Fleet (9 miles east), Aldershot (13 miles east), Alton (10 miles south) and Yateley (10 miles east).
Near you in Chineham
We work in homes and buildings around The Loddon School, The Vyne Community School and Eastrop Park. The closest station to Chineham is Basingstoke station, roughly 2.2 miles south-west. Other landmarks nearby include Basing House (1.5 miles south) and Basing House (1.5 miles south). Open spaces near Chineham include Daneshill Park Woods.
Aftercare tips
After the cure time, these simple habits help:
- Have rotten timber repaired before new mastic goes in
- Avoid heavy scraping on the mastic joint
- Ask the planning authority about consent for listed or conservation-area homes
- Avoid patching sand mastic with silicone
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
When to call us in Chineham
Timber swells and shrinks with the weather. The movement cracks the mastic little by little.
The most common problems we see are:
- Cracked mastic round a front door frame
- Tired mastic found when preparing windows for paint
- Draughty sash windows at the surround
- Weathered mastic on the most exposed windows
Letting a property close to Basingstoke station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Comparing quotes
- What insurance they hold
- How the surfaces are prepared before sealing
- What guarantee comes with the work
- Which sealant they’ll use, and why
How it works
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a single window, longer for several. For a job in Chineham, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Tell us if parking is tricky
- Mention any tricky access
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
Getting a quote is simple: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand, and we’ll take it from there.
Read more
Towns and villages near Chineham
More services for Chineham
When something else is needed
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Whether work needs listed building consent
- Cracked or broken glass
- Masonry that needs repairing
If you are not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer.
Joints and surfaces we work on
- Stone surrounds
- Period & listed homes
- Timber door frames
- Tenement windows
- Sash and case windows
- Brick reveals
Can I do it myself?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
FAQs for Chineham
Is Chineham within the area you cover?
Yes. Chineham is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Chineham in your area for sand mastic?
Yes, Chineham 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, and we will give you a clear quote.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Can sand mastic be painted?
It’s traditionally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme.
What information do you need?
Let us know what needs doing and where. We’ll ask anything else we need to know.
Do you work for letting agents?
Yes. We work in homes, commercial premises and hotels.
Do you offer different sealant colours?
Yes. White, clear and grey are common, and other colours are available for many products, and we’ll agree it with you first.
Surface by surface
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Period and listed homes
A traditional finish suits a period property, and sand mastic is one of them.