Surrey · England
Sand mastic for sash & case windows in West End, Surrey
Specialist sand mastic for West End: careful preparation, the right product and tidy work. Call for a quick quote.
- A silicone bead on a sash window that spoils the look
- Draughty sash windows at the surround
- Tired mastic found when preparing windows for paint
Why deal with it now?
Silicone might seem the quicker option, but it can look wrong on a period surround. Sand mastic suits the building and blends with the stone or brick. In an older home around West End, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
Doing several joints on one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Why book with us
- Fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
- 180+ five-star Google reviews
- Every job guaranteed for a year
See our cost guide or customer reviews.
How we handle sand mastic in West End
A silicone bead around a sash window can look out of place and is not always the right material. Sand mastic is the traditional choice, and we can replace one with the other. Common call-outs are for mastic dropping out of the joint and gaps round a timber door in stone or brick, across sash and case windows, stone surrounds and tenement windows.
Many houses in smaller places like West End have conservatories, garden rooms or patio doors. Those joints need the same attention as the main windows.
Big or small, it’s backed by our 12-month guarantee.
- Place
- West End (GU24)
- Region
- Surrey
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Towns and villages near West End
More services for West End
What happens on the day
Once we’re on site, 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 for a single window, longer for several. Parking around West End is normally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- We start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Plan for the work area to be out of bounds to pets and children
- Mention any parking rules near the property
Ask for a quote
We quote each job on its own, so the first step is telling us about yours. Simply phone 0345 464 0079 or send us an email and describe the job.
Related advice
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
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.
Do you need sand mastic in West End?
Timber frames move with the seasons. That movement opens up the mastic joint over time.
People generally contact us after spotting something like this:
- Silicone on a period window that looks wrong
- Draughts and rain around sash boxes
- Open joints round the window box
- Crumbling sand mastic round a window
In the older streets around Holy Trinity, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What your quote should include
- Whether VAT is included
- How much experience the applicator has
- Whether they’re fully insured
- The length of the guarantee
When it isn’t the sealant
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Decayed frames that need repair
- Cracked or broken glass
- Sashes that need overhauling
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before you book.
What we seal
- Brick reveals
- Sash and case windows
- Stone surrounds
- Tenement windows
- Period & listed homes
- Timber door frames
Questions from West End
Can you do sand mastic in West End?
Yes, West End is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or email us and tell us what needs doing, and we will send you a clear quote.
Is West End within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
When will the new mastic be hard?
A skin forms quite soon, but full hardening takes longer. We’ll tell you what to expect for your job.
Do you remove the old sealant?
Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. If you’re redecorating the window, ask us first and we will talk you through it.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Is it OK to seal over old sealant?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. We remove it all first.
Which is right for my windows, sand mastic or modern sealant?
It depends on the window. On many period windows, sand mastic looks right and suits the building, while modern frames normally get a flexible sealant.
Windows and doors in West End
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.
For landlords with property near Brookwood station, cracked sand mastic around sash windows lets in the draughts tenants complain about. Managing a site like Holy Trinity CofE Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
West End is about 3 miles north-west of Woking, in Surrey. From the centre of West End to the outskirts, we cover sand mastic for every kind of property. West End is one of 395 towns and villages in Surrey we cover. You can also see our page for Reading, about 16 miles away.
Our applicators cover all of the GU24 postcode area for sand mastic and the streets around it. If you need sand mastic at a property on High Street, Church Road and Sefton Close or anywhere close by, we can help. Nearby, we also carry out sand mastic in Lucas Green (1 mile south-west), Donkey Town (1 mile west), Penny Pot (1 mile east), Bisley (1 mile south) and Castle Green (1 mile east). Further out, we also cover Guildford (7 miles south-east), Woking (3 miles south-east), Camberley (4 miles west), Farnham (11 miles south-west), Egham (7 miles north-east) and Walton-on-Thames (10 miles east).
What’s near West End
Locally, jobs take us to homes and businesses close to Brentmoor Heath and Gordon's School. West End’s nearest station is Brookwood station, roughly 2.4 miles south. Well-known places in the area include Chobham Museum (1.6 miles north-east) and Brookwood Hospital (1.8 miles south-east). Green spaces nearby include Brookwood Lye.
Quotes for sand mastic in West End
There’s no set price list, because no two jobs are the same. What we look at:
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
- When we can work, for business premises
- Any mould that needs treating
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference.
What we need to know
To make quoting easier, let us know:
- If someone has resealed it before
- Photos by email, if that’s easy
- How many joints, rooms or windows are involved
- Where the job is, and your postcode
Need a quote? Please call 0345 464 0079 or drop us an email with a few details. We will explain what we’d do and give you a clear price before work begins.
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Find out about consent before window work on a listed home
- Ask us before painting near the mastic
- Avoid heavy scraping on the mastic joint
- Keep modern sealant off the mastic
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at before trying a quick fix.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.