Windsor and Maidenhead · England
Cheapside New Build Mastic
Specialist new build mastic for Cheapside: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Cracks appearing as a new home settles
- New-build shower sealant that has already split
- Worktop and upstand sealant coming away
What happens on the day
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. It generally takes a few hours for most snagging lists, longer for a run of plots. For a village or hamlet like Cheapside, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First we work through your snagging list or plot schedule with you.
- Failed or untidy sealant is cut out completely.
- Each joint is cleaned of dust and grit, then primed if required.
- New sealant suited to each joint is applied and tooled neatly.
- Finally, each room is checked and you are given the cure time.
Preparing for the visit
- Mention any parking rules near the property
- Clear the area around the work
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand, and we will come back to you with a quote.
Related advice
New build mastic for homes and businesses in Cheapside
Building dust is behind a lot of failed new-build sealant. We clean every joint thoroughly and prime where the surface and product need it, so the sealant actually sticks rather than sitting on a layer of grit. Common call-outs are for messy sealant that spoils new finishes and gaps behind new kitchen upstands, on windows & doors, bathrooms & en suites and plot handovers.
For a small place like Cheapside, the journey and access are planned in advance, and once on site, the job is the same as anywhere.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Cheapside (SL5)
- Region
- Windsor and Maidenhead
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the cost of new build mastic
You will get a clear quote before any work starts. It takes into account:
- Working hours on commercial sites
- The product the joint needs
- The number and length of the joints
- Access and height
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. We take all of that into account in your quote.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Any previous sealing or DIY work
- Where the property is
- Whether it’s a home or a business
- Roughly how big the job is
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or send us an email.
Cheapside questions
Is Cheapside in your area for new build mastic?
Yes, Cheapside is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.
Do you work for landlords with property near Ascot station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can phone 0345 464 0079 or email us with the details for a clear quote.
How long does new build mastic take?
That depends on how much there is to do, but as a guide it takes a few hours for most snagging lists, longer for a run of plots. We’ll give you a better idea when we quote.
My new home is still under warranty. Should I contact you?
Your builder, if you are still in their snagging or warranty period. If that doesn’t work out, we are happy to quote and our work is guaranteed for a year.
How much does new build mastic cost in Cheapside?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or drop us an email with a short description of the job.
Do you have insurance?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Where do you work from?
We’re based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Which products do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
If you manage several properties in or around Cheapside, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs.
Joints and finishes in Cheapside homes
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you’ve bought a new home near Ascot station, the sealant around baths, showers and frames is worth checking in the first year or two.
Cheapside is about 4 miles south of Windsor, in Windsor and Maidenhead. Cheapside gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. 57 places in Windsor and Maidenhead are on our list, large and small. We also work in Reading, around 14 miles away.
All of SL5 is covered for new build mastic. If you need new build mastic at a property on Water Splash Lane, Dorian Drive and Cheapside Road or anywhere close by, we can help. If you’re just outside Cheapside, we cover Beggar's Bush (1 mile south-east), Ascot (1 mile south-west), Blacknest (1 mile south-east), Woodside (1 mile north-west) and Sunninghill (1 mile south). Within a short drive, we also cover Maidenhead (8 miles north-west), Windsor (4 miles north), Boyn Hill (7 miles north-west), Cookham (10 miles north), Furze Platt (9 miles north-west) and Dedworth (4 miles north).
Local landmarks in Cheapside
In Cheapside, that means homes and buildings near Papplewick School, Charters School and Thatched Tavern Public House and the streets around them. For rail, the closest station is Ascot station, roughly 1.6 miles south-west of the centre. Well-known places in the area include Heatherwood Hospital (1.8 miles west) and Berkshire Yeomanry Museum (3.9 miles north-east). Open spaces near Cheapside include Virginia Water Lake and Gracious Pond.
Nearby places to Cheapside
More services for Cheapside
What the job involves on each surface
Show homes
Show homes need sealant that looks right from day one. We lay neat, even beads in colours to suit the finishes.
Bathrooms and en suites
En suite seals are easy to miss on a snagging list until they leak. A proper reseal keeps water in the tray.
Do you need new build mastic in Cheapside?
Once people move in, baths and trays take weight and bed down. A bath sealed empty drops slightly when filled, straining the joint and can tear.
Keep an eye out for any of the following:
- Cracks appearing as a new home settles
- Internal frame sealant that has split
- Smeared, uneven beads picked up at snagging
- Sealant applied over dusty or wet surfaces
In and around Cheapside, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
What to look for in a quote
- Whether all the old sealant comes out first
- Whether you can choose the colour
- What product goes in the joint
- Who does the work, and how experienced they are
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Get a leaking seal dealt with right away
- Watch for new gaps as the house dries out
- Report sealant problems to your builder during the snagging period
- Wait for the cure time before using a resealed shower
Keep photos of the joints and any snagging correspondence with your builder. It’s useful if you need to raise other issues later.
If a shower tray or bath seal splits in the first year, look for movement. Have it resealed, and the tray or bath checked, before it gets worse.