Surrey · England
Sand mastic for sash & case windows in Ashford, Surrey
Problem with your window and door surrounds in Ashford? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Draughty sash windows at the surround
- Crumbling sand mastic round a window
- Mastic round period door frames that has failed
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Cracked or broken glass
- Rotten sashes, sills or window boxes (a joiner’s job)
- Whether work needs listed building consent
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly.
Where we work in Ashford
- Period & listed homes
- Stone surrounds
- Tenement windows
- Sash and case windows
- Brick reveals
- Timber door frames
Sand mastic in Ashford, done properly
On many period windows, sand mastic looks right and suits the building. Newer frames generally get a flexible sealant instead and we’ll explain which is best for yours. Common call-outs are for open joints round the window box and tired mastic found when preparing windows for paint, on tenement windows, brick reveals and stone surrounds.
In a town like Ashford, older houses sit alongside newer estates, with windows of every age. All of them depend on a sound bead of mastic between frame and wall.
A 12-month guarantee comes as standard.
- Place
- Ashford (TW15, TW19, TW13)
- Region
- Surrey
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Different surfaces, different methods
Tenement and terrace windows
Upper-floor windows need access planning. Tell us the height and we’ll confirm what’s needed.
Period and listed homes
A traditional finish suits a period property, and sand mastic is one of them.
How we quote for sand mastic
Your quote is based on your job. We look at:
- The old material and how stubborn it is
- The type of sealant required
- Any mould that needs treating
- The number of rooms or windows
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or drop us an email.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Where the property is
- Any access issues, like height or stairs
- Whether it has been sealed before
- Pictures of the joints, sent by email
We do not publish a price list. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or drop us an email.
What happens if it’s left?
If you’re redecorating, renew the mastic first. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. In Ashford, as anywhere, most leaks start as a small gap in a joint, and early is when they’re cheapest and quickest to sort.
Doing several joints on one visit generally makes better use of the time than several visits. We’ll send you a clear quote for the lot.
Why Ashford clients choose us
- 20+ years of sealant experience
- Trusted Arbo and Everbuild sealants
- We are fully insured
- Rated 4.9 stars on Google
See our cost guide and what customers say.
What else we do in Ashford
When to call us in Ashford
Water gets into small cracks in the mastic and pushes it out. Exposed elevations usually fail first.
Most people get in touch when they notice something like this:
- Modern sealant on a period surround
- Old sand mastic that has cracked, crumbled or fallen out
- Weathered mastic on the most exposed windows
- Wind and rain getting in round a sash window
For an older house near a landmark such as Parish Church of St Matthew, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Questions to ask before booking
- When the joint can take water or movement
- What happens if the job turns out different
- How long the guarantee is
- How much experience the applicator has
Windows and doors in Ashford
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Ashford Surrey station, any sash windows need sound mastic to keep draughts and rain out. For site and facilities teams at buildings such as Spelthorne College, its window and door frames need their mastic kept sound, just like a home’s.
Ashford is about 6 miles south of Hayes, in Surrey. If you need sand mastic in Ashford, please call 0345 464 0079 or send us an email for a quick quote. We are based in Crawley and cover Surrey, Ashford included. Ashford is one of 395 places in Surrey we cover for sand mastic. London is on our list too, about 17 miles from Ashford.
Work in TW15, TW19 and TW13 works the same way as everywhere else we cover. If you need sand mastic at a property on Church Road, Station Road and London Road or anywhere close by, we can help. You’ll find Ashford on the A30 and A308, so it’s easy for us to get to with everything needed for sand mastic. Close by, we work in Littleton Common (1 mile south-east), Ashford Common (1 mile south-east), West Bedfont (1 mile north), Stanwell (2 miles north) and Hounslow (2 miles east). Further out, we also cover Guildford (14 miles south), Woking (9 miles south-west), Camberley (13 miles south-west), Epsom (11 miles south-east), Ewell (11 miles south-east) and Egham (4 miles west).
Landmarks near Ashford
Locally, jobs take us to homes and businesses close to Clarendon Primary School and Thomas Knyvett College. There’s a railway station in Ashford itself: Ashford Surrey station. Nearby you’ll also find Ashford Hospital (0.7 miles north) and Spelthorne Museum (2.2 miles west). For a walk, there’s Staines Reservoirs and Kempton Park Reservoirs.
Ashford: your questions answered
Do you work for landlords with property near Ashford Surrey station?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Do you cover Ashford for sand mastic?
Yes, Ashford is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we will give you a clear quote.
What information do you need?
A short description and the location. We will ask anything else we need to know.
Which is right for my windows, sand mastic or modern sealant?
For period timber windows in stone or brick, sand mastic is often the better fit. On modern frames, we’d normally use a flexible sealant.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Is it possible to paint over sand mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
How do I get a quote for sand mastic in Ashford?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Do you take out the old sealant first?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Landlords, agents and businesses in Ashford
Letting agents and landlords in Ashford can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
What we do, step by step
Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours per window, depending on the condition of the joints. Parking in a town like Ashford is normally straightforward, but tell us if there’s a driveway or any restrictions, and mention if the work is upstairs, in a flat or high on the outside.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- Mention any parking rules near the property
- Plan for the work area to be out of bounds to pets and children
- Tell us about any previous sealing or DIY attempts
Get a quote
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 and send you a clear quote.