Surrey · England
Sand mastic for sash & case windows in Westfield, Surrey
We cover Westfield for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Failed mastic on an exposed elevation
- Gaps round a timber door in stone or brick
- Silicone on a period window that looks wrong
Quotes for sand mastic in Westfield
The quote reflects the job in front of us. We take into account:
- Working hours on commercial sites
- Mould in or behind the old joints
- The number of rooms or windows
- The size of the job
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Asking for a quote
To make quoting easier, please include:
- The type of property
- The rough size of the job
- Any previous sealing or DIY work
- Any access issues, like height or stairs
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
About our sand mastic in Westfield
Across Westfield, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand, finished to suit the masonry. We work on tenement windows, period & listed homes and stone surrounds, and the jobs we see most are mastic worn away on windows facing the weather and wind and rain getting in round a sash window.
Houses in smaller places like Westfield can stand more in the open than those in a built-up town, so exposed windows and doors face the weather head on. The mastic around frames on those walls tends to age faster.
We stand behind the work with a 12-month guarantee, so you’re covered after we’ve gone.
- Location
- Westfield (GU22)
- Wider area
- Surrey
- Cover
- A year, on every job
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Westfield
What else we do in Westfield
When to call us in Westfield
Age is the main cause. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
Look out for any of the following:
- Gaps between timber frames and stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps round a timber door in stone or brick
- A silicone bead on a sash window that spoils the look
If you let a flat or house near Woking station, any sash windows need sound mastic to keep draughts and rain out.
What your quote should include
- What the cure time is
- Whether all the old sealant comes out first
- How much experience the applicator has
- Which sealant they’ll use, and why
Why it’s worth doing now in Westfield
New sash windows are a major, costly change, and in listed buildings it may need consent. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. In a smaller place like Westfield, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
Some things make a job bigger or smaller: 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.
Why us?
- Anti-fungal silicone where joints get wet
- Any old sealant cut out fully, not covered over
- Over 20 years’ experience
- Arbo and Everbuild products
Read what affects the cost or what customers say.
Should I try it myself first?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
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.
Windows and doors in Westfield
Historic houses like Clandon Park (about 4.1 miles south-east) are a reminder that the area around Westfield 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 is traditional sand mastic. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Schools such as Westfield Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. In the older streets around St Mark's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Westfield is about 1 mile south-east of Woking, in Surrey. For sand mastic in and around Westfield, please phone 0345 464 0079 or email us for a quick quote. We cover Surrey from our Crawley base, Westfield included. Across Surrey, we cover 395 places, Westfield among them. Our Crawley page covers work nearby, about 21 miles away.
Here we cover the GU22 postcode area for sand mastic. You’ll find streets such as Ash Road, Moor Lane and Loop Road, and we cover them all. Westfield is on the A247, so it’s easy for us to get to. Nearby, we also carry out sand mastic in Old Woking (1 mile east), Woking (1 mile north-west), Goldsworth Park (1 mile north-west), St John's (2 miles north-west) and Horsell (2 miles north). We also work in nearby towns such as Guildford (4 miles south), Camberley (8 miles west), Epsom (13 miles east), Farnham (12 miles south-west), Ewell (14 miles east) and Egham (9 miles north).
Near you in Westfield
Typical jobs here are in homes near Hoe Valley School, Hoe Valley School and Hoe Valley Linear Park and the streets around them. Westfield’s nearest station is Woking station, about 1.2 miles north of the centre. A little further out are Woking Community Hospital (1 mile north) and Guildford Castle (4.7 miles south). For a walk, there’s Pewley Hill and Boldermere Lake.
Honest limits
New sealant cannot fix everything, and we will tell you before we start. Sealant won’t put right:
- Crumbling stone or brickwork round the window
- Sash cords, weights and draught-proofing of the sashes
- Cracked or broken glass
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
What we seal
- Period & listed homes
- Tenement windows
- Brick reveals
- Timber door frames
- Stone surrounds
- Sash and case windows
Your questions about sand mastic in Westfield
Can you do sand mastic in Westfield?
Yes, Westfield is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll give you a clear quote.
Do you cover smaller places like Westfield?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and we’ll quote it together.
Will the old sealant be removed?
Yes, every time. New sealant will not bond properly to old, so the joint is cleaned back first.
Can I do it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Is consent needed for window work on a listed home?
Your local planning authority is the one to ask. They decide whether consent is needed.
Where is Mr Mastic based?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
What should I tell you?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply phone 0345 464 0079 or send us an email.
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes anything from a few hours to a full day, depending on how many windows. A visit to Westfield is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- 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
- Let us know about stairs, lifts or work at height
- Mention any leaks or damp you’ve noticed
- Clear the area around the work
How to get a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. Photos by email help us understand the job.
Related advice
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Renew mastic before redecorating the windows
- Check the mastic when you check the paintwork
- Avoid heavy scraping on the mastic joint
- Make sure water runs off the sill
Leave the new mastic unpainted, which is the traditional advice. Ask us before any decorating around it.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.