Windsor and Maidenhead · England
New-build mastic & snagging in Dorney, Windsor and Maidenhead
Plot mastic for developers and snagging failed sealant in new homes for homes and businesses in Dorney and across Windsor and Maidenhead. Fully insured, ARBOMaster approved and guaranteed for a year.
- Joints pulling apart as timber shrinks
- Leaking shower tray seals in a new home
- Sealant applied over dusty or wet surfaces
What affects the cost of new build mastic
For a quick quote, just ask. The main things that affect it are:
- The old material and how stubborn it is
- Any working-time requirements on site
- Access and height
- The number and length of the joints
The cost depends on how much there is to do, how hard the old material is to remove and access to the work. We give a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
To make quoting easier, please include:
- How we’d reach the joints
- How many joints, rooms or windows are involved
- The address or postcode of the job
- What’s wrong with the joints now
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we will come back to you with a quote.
How we handle new build mastic in Dorney
For builders and developers, we work through plots to the schedule you give us. Bathrooms, en suites, kitchens, frames and skirting are sealed ready for handover using the right product for each joint. We work on kitchens, plot handovers and bathrooms & en suites, and the jobs we see most are joints pulling apart as timber shrinks and shower seals failing in the first year or two.
Older homes in small places like Dorney often have timber floors that move with the seasons, which is why skirting and threshold joints need a flexible sealant, not filler.
The work is covered for a year after we finish. If anything isn’t right with it, phone 0345 464 0079 or send us an email.
- Location
- Dorney (SL4)
- Region
- Windsor and Maidenhead
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Places near Dorney
Also in Dorney
Different surfaces, different methods
Skirting and floors
Wet-area floor joints need a flexible seal. We seal them with a sealant suited to wet areas.
Kitchens
New-kitchen sealant is often applied in a rush. We remove it and reseal with a kitchen-suitable sealant.
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Check bath and shower seals every few months as the house settles
- Report sealant problems to your builder during the snagging period
- Don’t seal over failed sealant yourself
- Open a window or run the fan after bathing
Keep pictures of the joints and any snagging correspondence with your builder. It helps if anything else comes up during the warranty period.
Report failed sealant to the builder while you’re in the snagging period. After that, putting it right may fall to you, so raise it early.
New build mastic in Dorney: local notes
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 new homes near Burnham station, it’s worth checking the sealant early, while snags are still fresh.
Dorney is about 2 miles north-west of Windsor, in Windsor and Maidenhead. Dorney gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. We cover 57 towns and villages across Windsor and Maidenhead. You can also see our page for Reading, roughly 14 miles from Dorney.
Here we cover the SL4 postcode area for new build mastic. If you need new build mastic at a property on Common Road, Village Road and Boveney Road or a nearby road, we can help. We also cover the places around Dorney: Lake End (1 mile north-west), Dorney Reach (1 mile west), Cippenham (1 mile north-east), Huntercombe (1 mile north) and Bray (2 miles west). Larger places within reach include Maidenhead (4 miles west), Boyn Hill (4 miles west), North Ascot (6 miles south), Cookham (5 miles north-west), Furze Platt (4 miles north-west) and Broomhall (8 miles south).
What’s near Dorney
We work in homes and buildings around The Westgate School, Sutherland Grange and Westgate School. Dorney’s nearest station is Burnham station, about 1.4 miles north of the centre. Other landmarks nearby include Upton Hospital (2.7 miles east) and The History On Wheels Museum (1.2 miles east). For a walk, there’s Bray Pit and Taplow Lake.
Dorney: your questions answered
Is Dorney in your area for new build mastic?
Yes. We work across London and the South East, and Dorney is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear quote.
I let a flat near Burnham station. Can you help?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
Can you work from my snagging list?
Yes. Send it with photos and we’ll quote for the sealant items. If something is not sealant, we’ll say so.
Where do you work from?
Our base is Crawley. We work across South East England, London and Scotland.
How long will you be here?
As a guide, most jobs take a few hours for most snagging lists, longer for a run of plots. Larger jobs naturally take longer, and we will tell you how long to expect.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply phone 0345 464 0079 or send us an email.
Is there a guarantee?
Yes, always. There’s a 12-month guarantee on every job, wherever you are.
For landlords and businesses
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
For anyone letting property in or around Dorney, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
When to call us in Dorney
New homes are full of moisture from plaster, screed and concrete, and it dries out over the first couple of years. Drying timber shrinks and pulls joints apart and the sealant has to cope with the movement.
Signs it’s time to call us include:
- Leaking shower tray seals in a new home
- Cracks appearing as a new home settles
- Kitchen sealant that has pulled off the wall
- Internal frame sealant that has split
In and around Dorney, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
What to look for in a quote
- How the joint is cleaned and prepared
- Whether the sealant suits the joint
- How long to leave it before use
- Who does the work, and how experienced they are
How the visit works
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a few hours for most snagging lists, longer for a run of plots. Somewhere as small as Dorney, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- A sealant chosen for each area goes in and is tooled smooth.
- Finally, each room is checked and you’re given the cure time.
Preparing for the visit
- Move anything stored near the joints
- Mention any sign-in or site rules at work premises
- Tell us about any water getting in
Get a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work before giving you a price.