Surrey · England
Sand Mastic in Egham Hythe
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Egham Hythe, with a one-year guarantee on every job. Ask us for a quote.
- Wind and rain getting in round a sash window
- A silicone bead on a sash window that spoils the look
- Cracked mastic round a front door frame
Sand mastic for homes and businesses in Egham Hythe
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It suits period and listed homes, where modern sealant can look out of place. We work on brick reveals, sash and case windows and stone surrounds, and the jobs we see most are mastic that needs renewing before redecorating and old cement repairs round a window that have failed.
Around Egham Hythe, conservatories, garden rooms and patio doors are often part of the house. Their glazing joints and frame seals are as much a part of the job as the windows, and any older timber or sash windows need a sealant that suits them.
We stand behind the work with a one-year guarantee, so you’re covered after we’ve gone.
- Location
- Egham Hythe (TW18, TW20, TW19)
- Wider area
- Surrey
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
When it isn’t the sealant
We will not take on work that won’t last, so here’s what sealant cannot put right:
- Whether work needs listed building consent
- Crumbling stone or brickwork round the window
- Decayed frames that need repair
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before you book.
Where we work in Egham Hythe
- Brick reveals
- Period & listed homes
- Timber door frames
- Sash and case windows
- Tenement windows
- Stone surrounds
Nearby places to Egham Hythe
Other services in Egham Hythe
Different surfaces, different methods
Brick reveals
Loose mastic comes out and deep gaps are packed before the new mastic goes in.
Tenement and terrace windows
Where a building is shared, window work may involve neighbours, so check who is responsible first.
Egham Hythe: your questions answered
Do you cover Egham Hythe for sand mastic?
Yes. We work across London and the South East, and Egham Hythe is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Can you help a landlord with a rental near Egham station?
Yes. We work for letting agents and landlords as well as homeowners. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. Then phone 0345 464 0079 or send us an email.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Is it possible to take out silicone and use sand mastic instead?
Often, yes. Once the silicone is out and the joint prepared, sand mastic is applied by hand.
Are you insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and we will quote it together.
Do the sealants smell?
Possibly a little. It fades as the sealant cures, and ventilation helps.
Egham Hythe homes and the weather
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. With historic houses such as Botleys Mansion (about 3.5 miles south) nearby, there’s older building stock in the area around Egham Hythe as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around St Paul's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you let a flat or house near Egham station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Egham Hythe is about 1 mile east of Egham, in Surrey. Whether you are in the middle of Egham Hythe or further out, sand mastic is available for homes and businesses alike, from flats and houses to offices and hotels. We cover 395 towns and villages across Surrey, large and small. We also work in London, about 19 miles from Egham Hythe.
All of TW18, TW20 and TW19 is within our area for sand mastic. We cover properties on Pond Road, Green Lane and Glebe Road. Egham Hythe sits on or near the A320, so getting to you is simple. We also cover the places around Egham Hythe: Staines-upon-Thames (1 mile north-east), Egham (1 mile west), Thorpe (1 mile south), Hythe End (1 mile north-west) and Penton Hook (2 miles south-east). We also work in nearby towns such as Guildford (12 miles south), Woking (8 miles south), Camberley (11 miles south-west), Epsom (13 miles south-east), Ewell (13 miles south-east) and Walton-on-Thames (6 miles south-east).
Local landmarks in Egham Hythe
We work in homes and buildings around The Magna Carta School, The Jolly Farmer Public House and The American School In England. For rail, the closest station is Egham station, about 1 mile west of the centre. Other landmarks nearby include Ashford Hospital (2.7 miles north-east) and Spelthorne Museum (0.8 miles north-east). For a walk, there’s Gracious Pond and St Ann's Hill.
The process
At the end, we look at the finished work together. The work normally takes a few hours for a single window, longer for several, depending on the amount of work. In a smaller place like Egham Hythe, 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 start by checking each surround and agreeing the joints to renew.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- Clear items away from the joints we are working on
- Mention any parking rules near the property
- Let us know about stairs, lifts or work at height
Getting a quote
Need a quote? Please ring 0345 464 0079 or email us and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Check with your local planning authority if your home is listed
- Renew mastic before redecorating the windows
- Check the mastic when you check the paintwork
- Keep modern sealant off the mastic
Leave the new mastic unpainted, as traditional guidance advises. If you are redecorating, ask us first.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
Why deal with it now?
New mastic over crumbling mastic won’t hold. We remove the loose material first so the new work lasts. In a smaller place like Egham Hythe, 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.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or email us.
Why Egham Hythe clients choose us
- Every job guaranteed for a year
- Trusted Arbo and Everbuild sealants
- 20+ years of sealant experience
- Neat joints and a tidy finish
Take a look at our cost guide and our reviews.
Signs you need sand mastic in Egham Hythe
Sand mastic slowly weathers. It hardens, cracks and starts to come away on the stone or timber.
Any of these means the joints need attention:
- Open joints round the window box
- Window mastic to renew ahead of painting
- Old cement repairs round a window that have failed
- Silicone on a period window that looks wrong
If you look after a building such as Thorpe Lea Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
What to look for in a quote
- Whether all the old sealant comes out first
- Whether VAT is included
- What product goes in the joint
- Whether they’re fully insured
Quotes for sand mastic in Egham Hythe
The quote reflects the job in front of us. We take into account:
- Access and height
- The size of the job
- How many areas need sealing
- The old material and how stubborn it is
The cost reflects the work involved, not guesswork. That is why we ask about the job first and give you a clear price before work begins.
Asking for a quote
You do not need to know the technical terms. It helps if you can tell us:
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
- A few photos by email, if you can
- How many joints, rooms or windows are involved
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.