Surrey · England
Sunnymeads Sand Mastic
Sand mastic for Sunnymeads, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Mastic worn away on windows facing the weather
- Crumbling sand mastic round a window
- Window mastic to renew ahead of painting
What we do, step by step
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes a few hours per window, depending on the condition of the joints, including the tidy-up. Somewhere as small as Sunnymeads, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- 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.
Getting ready for the visit
- Move anything stored near the joints
- Keep pets and children clear of the area while we work
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, call 0345 464 0079 or email us.
Advice
Sand mastic in Sunnymeads
Traditional burnt sand mastic that sits naturally against stone and brick. It suits period and listed homes where a modern sealant bead would stand out. Common call-outs are for silicone on a period window that looks wrong and cracked mastic round a front door frame, on tenement windows, period & listed homes and brick reveals.
In a village or hamlet like Sunnymeads, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Location
- Sunnymeads (TW19, SL4, SL3)
- Region
- Surrey
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Why deal with it now?
Replacing sash windows is a big decision for a period home, 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 small place like Sunnymeads, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we will explain what it covers.
Why book with us
- We are fully insured
- 180+ five-star Google reviews
- We leave the area clean and tidy
- Trusted Arbo and Everbuild sealants
Should I try it myself first?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
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.
Questions from Sunnymeads
Is Sunnymeads in your area for sand mastic?
Yes, Sunnymeads is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Do you work for landlords with property near Sunnymeads station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before we start.
Can you replace silicone on a period window with sand mastic?
Often, yes. With the silicone removed and the joint cleaned we point it with sand mastic.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.
Are you insured?
Yes. We’re fully insured, and we’ve been doing sealant work for more than 20 years.
Do the sealants smell?
It depends on the product. Some smell for a while, some hardly at all.
What is sand mastic?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
Do I need permission for sand mastic on a listed building?
Check with your local planning authority. They decide whether consent is needed.
Sand mastic in Sunnymeads: local notes
Historic houses like Frogmore House (about 1.6 miles west) are a reminder that the area around Sunnymeads 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’s 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.
For site and facilities teams at buildings such as Wraysbury Primary School, the mastic around its windows and doors needs looking after like any other building’s. Rented homes near Sunnymeads station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Sunnymeads is about 3 miles north of Egham, in Surrey. We carry out sand mastic for homes and businesses in Sunnymeads. 395 places in Surrey are on our list. There’s also a page for Reading, roughly 18 miles from Sunnymeads.
Work in TW19, SL4 and SL3 is quoted and booked the same way as anywhere else. If you need sand mastic at a property on The Avenue, Park Avenue and Welley Road or a nearby road, our applicators can take on the job. Other places close to Sunnymeads include Wraysbury (1 mile south), Horton (1 mile east), Old Windsor (1 mile south-west), Brands Hill (1 mile north-east) and Datchet (1 mile north-west). Further out, we also cover Guildford (15 miles south), Woking (10 miles south), Camberley (12 miles south-west), Epsom (15 miles south-east), Ewell (15 miles south-east) and Egham (3 miles south).
What’s near Sunnymeads
Locally, jobs take us to homes and businesses close to The Perserverance Public House, Arthur Jacob Nature Reserve and Churchmead School, among other places. Sunnymeads has its own railway station: Sunnymeads station. A little further out are Berkshire Yeomanry Museum (2.2 miles west) and Windsor Castle (2.2 miles north-west). Green spaces nearby include Staines Reservoirs.
For landlords and businesses
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
We also work for property managers and facilities teams. We can quote a run of properties together.
Towns and villages near Sunnymeads
Other services in Sunnymeads
What affects the cost of sand mastic
The quote reflects the job in front of us. We look at:
- The product the joint needs
- When we can work, for business premises
- Access and height
- How much old sealant there is and how hard it is to remove
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Asking for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- The type of property
- What’s wrong with the joints now
- If someone has resealed it before
- The rough size of the job
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
How to look after the new joints
How long the joints last depends on use and care. Here’s what we suggest:
- Keep modern sealant off the mastic
- Inspect the joints round the windows every year or so
- Take care around the mastic when scraping paint
- Ask the planning authority about consent for listed or conservation-area homes
Keep gutters and sills clear so water runs away from the surround. Constant wetting wears the mastic faster.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.
Signs you need sand mastic in Sunnymeads
Decorating can disturb tired mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
Look out for any of the following:
- Draughty sash windows at the surround
- Modern sealant on a period surround
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps where the frame meets the masonry
In the older streets around SS Peter and Andrew's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Questions to ask before booking
- How the joint is cleaned and prepared
- How much experience the applicator has
- Which sealant they’ll use, and why
- When the joint can take water or movement