West Berkshire · England
New Build Mastic in Newtown Common
Professional new build mastic in and around Newtown Common, with every bit of old sealant taken out first and a one-year guarantee.
- Plot mastic for developers ahead of handover
- Leaking shower tray seals in a new home
- Frame joints opening as the plaster dries
New build mastic in Newtown Common, done properly
We work in new homes and on new-build sites across Newtown Common. One shower or a whole phase of plots, the method does not change: cut out, clean, prime where needed and reseal neatly. Common call-outs are for new-build shower sealant that has already split and beads laid onto grit and dust from the build, across skirting & floors, kitchens and show homes.
Older homes in small places like Newtown Common often have timber floors that move with the seasons, which is why skirting and threshold joints need a flexible sealant, not filler.
Each job carries a 12-month guarantee.
- Place
- Newtown Common (RG20)
- Wider area
- West Berkshire
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
When something else is needed
Before booking, it’s worth knowing the limits:
- Broken tiles or a split tray
- Structural cracks in walls or ceilings
- Disputes or warranty claims with your builder
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think before booking.
Joints and surfaces we work on
- Kitchens
- Plot handovers
- Bathrooms & en suites
- Show homes
- Windows & doors
- Skirting & floors
Landlords, agents and businesses in Newtown Common
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
Landlords and agents in Newtown Common can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
New build mastic in Newtown Common: local notes
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For new homes near Newbury station, it’s worth checking the sealant early, while snags are still fresh. Around Newtown Common, as everywhere, new build mastic is only as good as the preparation behind it.
Newtown Common is about 2 miles south of Newbury, in West Berkshire. Newtown Common gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. 155 places in West Berkshire are on our list, from the larger towns to small villages. You can also see our page for Reading, about 16 miles away.
We cover every part of the RG20 postcode area for new build mastic and the streets around it. If you’re just outside Newtown Common, we cover Burghclere Common (1 mile south), Earlstone Common (1 mile south), Sandleford (1 mile north-east), Wash Common (1 mile north-west) and Wash Water (1 mile west). Further out, we also cover Thatcham (4 miles north-east), Burghfield Common (12 miles east), Speenhamland (3 miles north), Hungerford (9 miles west), Calcot (13 miles north-east) and Lambourn (13 miles north-west).
Local landmarks in Newtown Common
We work in homes and buildings around Park House School and Sandleford Priory, among other places. Newtown Common’s nearest station is Newbury station, about 2.2 miles north of the centre. Nearby you’ll also find Old Chapel Textile Centre (2.1 miles east) and West Berkshire Community Hospital (3.1 miles north-east). Open spaces near Newtown Common include Beacon Hill and Audrey's Meadow.
Should I try it myself first?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Newtown Common questions
Do you cover Newtown Common for new build mastic?
Yes, Newtown Common is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear price.
Will you come out to Newtown Common?
Yes. Newtown Common is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you work for developers?
Yes. We work through plots to your schedule, room by room. Tell us the plots and the joints involved for a clear quote.
How do I get a quote for new build mastic in Newtown Common?
Every job is different, so each one gets its own quote. For a quick quote, call 0345 464 0079 or send us an email with a short description of the job.
Where do you work from?
We work from Crawley. We cover Newtown Common and the rest of West Berkshire, along with the rest of our area.
Does someone need to be in?
It depends on the job. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
How long should I leave it?
Cure times vary by product. Before we leave, we will tell you the cure time.
Looking after it afterwards
So the new joints stay in good condition:
- Report sealant problems to your builder during the snagging period
- Avoid running a DIY bead over the old one
- Photograph failed sealant before it’s redone
- Look at the sealant regularly in the first couple of years
Avoid standing on the rim of the bath or the edge of the tray while the sealant cures. If a bath or tray moves when you stand in it, get it looked at.
Lifting sealant traps moisture and mould behind it. Dealing with it before it goes black saves a harder job later.
How we quote for new build mastic
You’ll get a clear quote before we start. It’s based on:
- The number of rooms or windows
- Whether there’s mould to deal with
- How easy the joints are to reach
- The type of sealant required
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re not sure whether it needs doing, phone 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that’s easy
- How many joints, rooms or windows are involved
- Any previous sealing or DIY work
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, call 0345 464 0079 or email us.
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 take it out and reseal neatly, colour-matched where it shows.
Places near Newtown Common
More services for Newtown Common
How it works
On the day, there’s very little for you to do. Show us the job and we will take it from there. The job generally takes a few hours in a single home, including the tidy-up. Somewhere as small as Newtown Common, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- Every bit of the old builder’s sealant is cut out, with no layer left behind.
- Joints are vacuumed and cleaned of building dust.
- Primer goes on where the surface and product need it, then the new sealant.
- We tool every joint neatly and tell you when each area can be used.
How to prepare
- Mention any parking rules near the property
- On commercial sites, let us know about site rules
- Move anything stored near the joints
Get a quote
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job.