Slough · England
Chalvey Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Chalvey and across Slough. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Open joints round the window box
- Mastic that needs renewing before redecorating
- Mastic dropping out of the joint
Sand mastic in Chalvey, done properly
Traditional burnt sand mastic blends with stone and brick surrounds. It suits period and listed homes, where modern sealant can look out of place. We work on stone surrounds, period & listed homes and tenement windows, and common reasons people get in touch are draughts and rain around sash boxes and gaps where the frame meets the masonry.
Around Chalvey, conservatories, garden rooms and patio doors are often part of the house. Those joints need the same attention as the main windows, and any older timber or sash windows need a sealant that suits them.
You are covered for a year from the day we finish. If there’s a problem with it, please call 0345 464 0079 or drop us an email.
- Where
- Chalvey (SL1, SL4)
- Wider area
- Slough
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What happens on the day
On the day, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before we start. The work usually takes a few hours per window, depending on the condition of the joints. In a smaller place like Chalvey, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- 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.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Plan for the work area to be out of bounds to pets and children
- Let us know about stairs, lifts or work at height
Ask for a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. Whenever you are ready, ring 0345 464 0079 or send us an email.
Related advice
Landlords, agents and businesses in Chalvey
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
If you manage several properties in or around Chalvey, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Leave it or put it right?
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic won’t stop the gaps, and the new mastic is traditionally left unpainted. In a smaller place like Chalvey, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
Why Chalvey customers choose us
- One-year guarantee on every job
- Anti-fungal silicone where joints get wet
- 4.9 on Google from 180+ five-star reviews
- More than 20 years in sealant work
Take a look at our cost guide or customer reviews.
Can I do it myself?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Signs you need sand mastic in Chalvey
Previous repairs in cement or silicone often trap water or crack away. They don’t move with the timber and we normally remove them.
The most common problems we see are:
- Mastic dropping out of the joint
- Wind and rain getting in round a sash window
- Gaps between timber frames and stone or brick
- Silicone on a period window that looks wrong
For site and facilities teams at buildings such as Montem Academy, the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- Whether all the old sealant comes out first
- How hidden problems are handled
- When the joint can take water or movement
- Is VAT in the price?
What else we do in Chalvey
Windows and doors in Chalvey
Historic houses like Windsor Castle (about 1.6 miles south) are a reminder that the area around Chalvey has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Rented homes near Slough station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Homes close to Church of St Peter include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Chalvey is about 1 mile south of Slough, in Slough. Every kind of property in Chalvey can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Chalvey is one of 31 places in Slough we cover for sand mastic. Reading is on our list too, about 16 miles from Chalvey.
Here we cover the SL1 and SL4 postcode area for sand mastic. Whether your property is on Tuns Lane, Cress Road and Henry Road or a nearby road, we can help. Main roads around Chalvey include the A4 and A332. We also cover the places around Chalvey: Slough (1 mile north), Cippenham (1 mile north-west), Britwell (2 miles north), Dorney (2 miles west) and Huntercombe (2 miles north-west). Larger places within reach include Burnham (3 miles north-west), Stoke Poges (3 miles north), Farnham Common (4 miles north), Poyle (5 miles south-east) and Colnbrook (4 miles south-east). Chalvey is among the bigger towns we cover in Slough.
Near you in Chalvey
In Chalvey, that means homes and buildings near The Moon and Spoon pub, Westgate School and Herschel Park and the streets around them. For rail, the closest station is Slough station, roughly 0.9 miles north-east of the centre. Well-known places in the area include Windsor Castle (1.6 miles south) and Upton Hospital (0.7 miles east). For a walk, there’s Burnham Beeches and Taplow Lake.
Common questions in Chalvey
Can you do sand mastic in Chalvey?
Yes, Chalvey is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or drop us an email and let us know what needs doing.
Is Chalvey within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can I choose the sealant colour?
Most of the time, yes. We will explain which colours are available and agree one before any work starts.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Can you replace silicone on a period window with sand mastic?
In most cases. The silicone is cut out and the joint cleaned, then point it with sand mastic.
Do you guarantee sand mastic work?
All our work has a one-year guarantee.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us and we are fully insured.
What sealant do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
What affects the quote in Chalvey
There’s no set price list. What we look at:
- Working hours on commercial sites
- Whether the work is at height
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
What we need to know
To make quoting easier, let us know:
- Access, such as stairs, a lift or height
- The rough size of the job
- Where the property is
- The problem you’ve noticed
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.
When it is not the sealant
We won’t take on work that won’t last, so these are the limits:
- Whether work needs listed building consent
- Timber that has rotted
- Sashes that rattle, stick or won’t open
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before you book.
What we seal
- Sash and case windows
- Stone surrounds
- Tenement windows
- Timber door frames
- Brick reveals
- Period & listed homes