West Berkshire · England
New Build Mastic in Silchester
Plot mastic for developers and snagging failed sealant in new homes for homeowners, landlords and businesses in Silchester. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps behind new kitchen upstands
- New-build shower sealant that has already split
- Internal frame sealant that has split
Different surfaces, different methods
Show homes
Tired or marked sealant in a show home can be renewed. We cut it out and reseal neatly.
Kitchens
As a new house dries, worktops and walls shift a little, which opens gaps along the back. A fresh flexible bead closes them.
About our new build mastic in Silchester
New homes move as they dry out. Timber shrinks, plaster dries and baths and trays bed down, and sealant applied in a hurry at handover can split. If you are dealing with cracked sealant around new window and door frames and shower seals failing in the first year or two, we can put it right.
For a small place like Silchester, the journey and access are planned in advance, and the work itself is the same as on any site.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Location
- Silchester (RG7)
- Region
- West Berkshire
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What we’re called out for in Silchester
Sealant is often one of the last jobs before handover. Joints aren’t always cleaned of dust or primed, and the sealant sits on grit instead of the surface.
Any of these means the joints need attention:
- Plot mastic for developers ahead of handover
- Gaps behind new kitchen upstands
- Frame joints opening as the plaster dries
- Cracked caulk along new skirting
Around Silchester, as everywhere, new build mastic is only as good as the preparation behind it.
Comparing quotes
- How long to leave it before use
- Whether all the old sealant comes out first
- How hidden problems are handled
- Whether you can choose the colour
What affects the cost of new build mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Whether old sealant or filler has to be cut out
- Working hours on commercial sites
- The product the joint needs
- Any mould that needs treating
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Helping us quote
When you call or email, these details help:
- Photos by email, if that’s easy
- The problem you’ve noticed
- The type of property
- How many joints, rooms or windows are involved
We quote each job on its own, so start by telling us what you need. Simply phone 0345 464 0079 or send us an email and describe the job.
What new build mastic looks like in Silchester
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.
If you’ve bought a new home near Bramley (Hants) station, the sealant around baths, showers and frames is worth checking in the first year or two.
Silchester is about 2 miles east of Tadley, in West Berkshire. Across the RG7 area, we cover new build mastic for homes and businesses. Across West Berkshire, we cover 155 places, Silchester among them. Our Reading page covers work nearby.
Here we cover the RG7 postcode area for new build mastic. Local streets include Little London Road, Romans Field and Dukes Ride, and we cover them all. If you’re just outside Silchester, we cover Pamber Heath (1 mile north-west), Aldermaston Soke (1 mile north-west), Old Warren (2 miles north-west), Little London (2 miles south) and Pamber Green (2 miles south-west). Within a short drive, we also cover Newbury (10 miles west), Thatcham (8 miles north-west), Burghfield Common (4 miles north-east), Speenhamland (10 miles west), Spencers Wood (6 miles north-east) and Calcot (6 miles north).
Near you in Silchester
We work in homes and buildings around Padworth Common Local Nature Reserve, among other places. The nearest railway station is Bramley (Hants) station, roughly 2.4 miles south-east. Well-known places in the area include Basingstoke and North Hampshire Hospital (5.1 miles south) and Calleva Museum (under half a mile north-east). Not far away are Hosehill Lake.
The process
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for most snagging lists, longer for a run of plots and we leave things clean and tidy. For a village or hamlet like Silchester, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
- We clean out the dust and grit left from the build.
- We prime where needed and apply a sealant suited to each joint.
- Each bead is tooled and the cure times explained.
Getting ready for the visit
- Mention if the joints have been sealed before
- Let us know about parking restrictions
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
Want a quote for new build mastic? Please ring 0345 464 0079 or email us and tell us about the job. We will explain what we’d do and give you a clear price before any work starts.
Advice
Should I try it myself first?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Why it’s worth doing now in Silchester
A tube of sealant from the DIY shop won’t fix the cause: grit, unprimed surfaces and old layers underneath. Proper removal and preparation are what make it last. In a small place like Silchester, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Leaving a failed joint generally makes the job bigger, not smaller. If you’re unsure, ring 0345 464 0079 or email us and we’ll give you an honest view and a quote.
What you get with us
- Full insurance on every job
- Approved under the ARBOMaster scheme
- More than 20 years in sealant work
- Trusted Arbo and Everbuild sealants
Read how sealant jobs are priced and customer reviews.
Nearby places to Silchester
Other services in Silchester
Your questions about new build mastic in Silchester
Do you cover smaller places like Silchester?
Yes, smaller places are covered as well as towns. 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 cover Silchester for new build mastic?
Yes, Silchester is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
When is the sealant fully cured?
That depends on the sealant used, so follow the cure time we give you.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Why does sealant fail so quickly in new builds?
New homes dry out and move in their first couple of years, and sealant is often applied quickly onto dusty surfaces. Both lead to early failure.
Do I have to be there?
We need access to the joints, so we will agree that with you when we book. Indoors, that usually means someone at home.
Should I wait before resealing?
If the seal has failed and water is getting in, do it now. Small gaps that are just cosmetic can be resealed once movement has slowed.
Work for landlords, hotels and businesses
For anyone letting property in or around Silchester, several properties can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
We work for letting agents and landlords as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.