West Berkshire · England
Sand mastic for sash & case windows in Plastow Green, West Berkshire
Sand mastic for Plastow Green and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Mastic that needs renewing before redecorating
- Silicone on a period window that looks wrong
- Cement or filler used on old window joints that has cracked
Sand mastic for homes and businesses in Plastow Green
If your home is listed or in a conservation area, check with your local planning authority if consent is needed before window work. Sand mastic is often favoured as a like-for-like material. We’re often asked to deal with old sand mastic that has cracked, crumbled or fallen out and a silicone bead on a sash window that spoils the look, across tenement windows, sash and case windows and stone surrounds.
Homes in small places like Plastow Green often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
All our work is covered by a 12-month guarantee, wherever you are in West Berkshire.
- Place
- Plastow Green (RG19)
- Region
- West Berkshire
- Guarantee
- 12 months on all our work
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Signs you need sand mastic in Plastow Green
Scraping and sanding before painting can loosen old mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
Most people get in touch after spotting something like this:
- Gaps round a timber door in stone or brick
- Weathered mastic on the most exposed windows
- Draughts and rain around sash boxes
- Old cement repairs round a window that have failed
If you let a flat or house near Thatcham station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Questions to ask before you book
- How the joint is cleaned and prepared
- What happens if they find a problem under the old sealant
- The length of the guarantee
- Is VAT in the price?
Surface by surface
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.
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.
How it works
When we arrive, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before any work starts. The work usually takes a few hours for a single window, longer for several. Somewhere like Plastow Green 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.
- First, we look at the surrounds with you and agree what needs doing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Move anything stored near the joints
- Tell us about access, such as stairs, a lift or high-level joints
- Try not to wet indoor joints just before the visit
Ask for a quote
For a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.
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For landlords and businesses
We also work for property managers and facilities teams in Plastow Green and across West Berkshire. We can quote a run of properties together, and we are fully insured.
We work for letting agents and landlords as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
When something else is needed
It helps to know what we cannot do too:
- Cracked or broken glass
- Damaged stone surrounds
- Sashes that rattle, stick or won’t open
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before you book.
What we seal
- Tenement windows
- Brick reveals
- Sash and case windows
- Stone surrounds
- Timber door frames
- Period & listed homes
Why deal with it now?
New sash windows are a major, costly change, and in listed buildings it may need consent. Where the frames are in good order, new mastic seals the surround. Where a wall is exposed, as many are in small places like Plastow Green, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Doing several joints on one visit is generally more efficient than separate visits. We will give you a clear price for the lot.
Why book with us
- Rated 4.9 stars on Google
- Every job guaranteed for a year
- Trusted Arbo and Everbuild sealants
- We never seal over old sealant
Can I do it myself?
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Windows and doors in Plastow Green
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.
Schools such as Cheam School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. Homes close to Church of St Paul include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Plastow Green is about 4 miles south of Thatcham, in West Berkshire. Across the RG19 area, we can carry out sand mastic at your property. Across West Berkshire, we cover 155 places, Plastow Green among them. There’s also a page for Reading, roughly 13 miles from Plastow Green.
Jobs for sand mastic in RG19 works the same way as everywhere else we cover. We also cover the places around Plastow Green: Goose Hill (1 mile north-east), Mill Green (1 mile north), Headley (1 mile north-west), Fair Oak (1 mile east) and Ashford Hill (1 mile east). Further out, we also cover Newbury (5 miles north-west), Thatcham (4 miles north), Burghfield Common (8 miles north-east), Speenhamland (5 miles north-west), Hungerford (13 miles west) and Spencers Wood (12 miles east).
Near you in Plastow Green
Plastow Green’s nearest station is Thatcham station, roughly 2.9 miles north of the centre. Other landmarks nearby include West Berkshire Community Hospital (4.4 miles north-west) and Old Chapel Textile Centre (2.4 miles north-west). Open spaces near Plastow Green include Ladle Hill and Thatcham Reed Beds.
Towns and villages near Plastow Green
More services for Plastow Green
Your questions about sand mastic in Plastow Green
Is Plastow Green within the area you cover?
Yes. Plastow Green is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Plastow Green for sand mastic?
Yes, Plastow Green is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job.
Do you guarantee sand mastic work?
Our one-year guarantee covers every job, sand mastic included.
Where do you work from?
We are a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Can new sealant go over the old?
No. We remove every bit of old sealant first.
Will you leave a mess?
We keep the work tidy. Nearby surfaces are protected, and the area is left clean when we finish.
Can I paint the new mastic?
It’s traditionally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
What’s sand mastic made of?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.