Surrey · England
Sand mastic for sash & case windows in Englefield Green, Surrey
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Englefield Green, backed by a 12-month guarantee. Call for a quick quote.
- Gaps between timber frames and stone or brick
- A silicone bead on a sash window that spoils the look
- Window mastic to renew ahead of painting
How we handle sand mastic in Englefield Green
Sand mastic does not last for ever and gaps open up round the frame. Renewing it closes the gap so the surround looks right again. We work on brick reveals, tenement windows and timber door frames, and common reasons people get in touch are cracked mastic round a front door frame and mastic that needs renewing before redecorating.
Houses in smaller places like Englefield Green can stand more in the open than those in a built-up town. The mastic around frames on those walls tends to age faster.
Big or small, you get the same one-year guarantee.
- Place
- Englefield Green (TW20)
- Region
- Surrey
- Cover
- One year on every job
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Quotes for sand mastic in Englefield Green
The price is agreed before any work begins. It takes into account:
- Whether there’s mould to deal with
- How many rooms, windows or areas are involved
- The product the joint needs
- Whether old sealant or filler has to be cut out
Doing several joints on one visit generally makes better use of the time than several visits. We’ll give you a clear price for the lot.
Asking for a quote
When you call or email, these details help:
- Where the property is
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that is easy
- Whether it’s a home or a business
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you’re ready, phone 0345 464 0079 or drop us an email.
The process
We work through the job in order: protect, prepare, seal, tidy. For most jobs that takes a few hours per window, depending on the condition of the joints, and the area is left clean. In a smaller place like Englefield Green, 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.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
How to prepare
- Keep children and pets away from the work area
- Mention any parking rules near the property
- On commercial sites, let us know about site rules
Ask for a quote
For sand mastic in Englefield Green, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
Related advice
Surface by surface
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
Tenement and terrace windows
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Sort the mastic before the decorators arrive
- Make sure water runs off the sill
- Ask the planning authority about consent for listed or conservation-area homes
- Ask a joiner to look at soft timber first
Don’t touch or press the mastic while it hardens. It forms a skin fairly soon but needs longer to fully harden.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
Leave it or put it right?
An open joint round the frame lets weather in. Left, water can reach the timber and the wall so renewing it early protects the window. In a smaller place like Englefield Green, 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.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Call for a quick quote and we’ll go through it with you.
Why Englefield Green clients choose us
- Fully insured
- More than 20 years in sealant work
- One-year guarantee on every job
- Anti-fungal silicone where joints get wet
Read what affects the cost and our reviews.
Work for landlords, hotels and businesses
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
If you manage several properties in or around Englefield Green, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and photos by email help.
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
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 Englefield Green
Historic houses like Frogmore House (about 3.2 miles north) are a reminder that the area around Englefield Green has older buildings as well as new. In older buildings, 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, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near Church of Our Lady of the Assumption, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Rented homes near Egham station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out. Schools such as Englefield Green Infant School and Nurseries are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Englefield Green is about 1 mile west of Egham, in Surrey. Wherever you are in the TW20 postcode area, our applicators can take on sand mastic. Englefield Green is one of 395 places in Surrey we cover. Our Reading page covers work nearby (18 miles or so).
We cover every part of the TW20 postcode area for sand mastic and the streets around it. Local streets include South Road, Albert Road and Willson Road, all of which we cover. Being close to the A328, Englefield Green is simple for us to get to for sand mastic. Other places close to Englefield Green include Bishopsgate (1 mile north-west), Egham Wick (1 mile south-west), Egham (1 mile east), Stroude (1 mile south-east) and Hythe End (2 miles north-east). Further out, we also cover Guildford (13 miles south), Woking (8 miles south), Camberley (10 miles south-west), Epsom (14 miles south-east), Ewell (15 miles east) and Walton-on-Thames (8 miles south-east).
Local landmarks in Englefield Green
Locally, jobs take us to homes and businesses close to The Magna Carta School, Strode's College and The Barley Mow Public House and the streets around them. The nearest railway station is Egham station, roughly 1 mile east of the centre. Well-known places in the area include Windsor Castle (4 miles north) and Spelthorne Museum (2.4 miles east). For a walk, there’s Virginia Water Lake and St Ann's Hill.
Towns and villages near Englefield Green
What else we do in Englefield Green
Common questions in Englefield Green
Can you do sand mastic in Englefield Green?
Yes, Englefield Green is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing.
Do you work for landlords with property near Egham station?
Yes, we work for letting agents and landlords. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Can I choose the sealant colour?
In most cases you can choose. We’ll tell you which colours the right product comes in.
Do I need permission for sand mastic on a listed building?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like, but they decide.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. The silicone is cut out and the joint cleaned before the sand mastic goes in.
Is it OK to seal over old sealant?
No. New silicone will not bond to old silicone, and it traps any mould or water underneath. We remove it all first.
How long does sand mastic take to harden?
It forms a skin fairly soon, then hardens over a longer period. Timing depends on the weather and the joint.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.