West Berkshire · England
Ecchinswell New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for Ecchinswell, backed by a 12-month guarantee. Ask us for a quote.
- Second-fix sealing on new plots
- Smeared, uneven beads picked up at snagging
- Beads laid onto grit and dust from the build
Should I try it myself first?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
New build mastic in Ecchinswell
Failed shower seals, gaps along the skirting and messy beads are common items on a new-home snagging list. If you’re still within the builder’s snagging or warranty period, tell them first and if that stalls, we can do it. If you are dealing with messy sealant that spoils new finishes and sealant that never bonded to the surface, we can help, on skirting & floors, plot handovers and windows & doors alike.
Around Ecchinswell, older homes often have timber floors that move through the year, which is why skirting and threshold joints need a flexible sealant, not filler.
Each job carries a 12-month guarantee, large or small.
- Location
- Ecchinswell (RG20)
- Region
- West Berkshire
- Guarantee
- One year on every job
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Also near Ecchinswell
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The process
A visit follows a simple pattern: we look at the joints together, protect the area around them, do the work and clear up. Most jobs take a few hours in a single home. Somewhere as small as Ecchinswell, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We go through the snagging list or plot schedule and agree the joints to do.
- We cut out every bit of the failed or messy sealant.
- We clean off dust from the build and prime the surfaces where the product needs it.
- A sealant chosen for each area goes in and is tooled smooth.
- Each area is checked and left with its cure time.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Plan for the work area to be out of bounds to pets and children
- For business premises, tell us about site rules or sign-in
Getting a quote
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. We will explain what we’d do and give you a clear quote before we start.
Read more
When it is not the sealant
In fairness, some problems need a different trade:
- Movement caused by a poorly fitted tray or bath
- Deciding who is responsible under a builder’s warranty
- Plumbing faults behind the sealant
If you are not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer before booking.
Surfaces we seal
- Kitchens
- Windows & doors
- Show homes
- Plot handovers
- Bathrooms & en suites
- Skirting & floors
What affects the quote in Ecchinswell
There’s no set price list, because no two jobs are the same. The quote depends on:
- When we can work, for business premises
- The number and length of the joints
- Access and height
- Whether there’s mould to deal with
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
What we need to know
There’s no need for technical detail. Just tell us:
- Any access issues, like height or stairs
- The type of property
- The rough size of the job
- What’s wrong with the joints now
If you’re in Ecchinswell and need new build mastic, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Wait for the cure time before using a resealed shower
- Report sealant problems to your builder during the snagging period
- Avoid running a DIY bead over the old one
- Avoid scourers and strong chemicals on sealant
Keep an eye on the joints over the first couple of years. Hairline gaps can open as timber and plaster dry, and they’re simple to reseal once movement has slowed.
Mould takes hold quickly in sealant that has gaps or lifted edges. Dealing with it before it goes black keeps the job straightforward.
What the job involves on each surface
Windows and doors
External mastic around new windows and doors is sometimes rushed or missed. We reseal it with a weatherproof, flexible sealant.
Show homes
Bathrooms, kitchens and frames in show homes are sealed or resealed to a neat finish ready for viewings. We’ll plan around viewing times.
Ecchinswell questions
Do you cover Ecchinswell for new build mastic?
Yes. We work across London and the South East, and Ecchinswell is part of that. Just call 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Do you cover smaller places like Ecchinswell?
Yes, Ecchinswell is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Will you just run a new bead over the existing one?
No. Over-sealing traps mould and water and soon fails. We remove every bit of the old bead before resealing.
Which products do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference.
Are you fully insured?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
My new home is still under warranty. Should I contact you?
Your builder, if you’re still in their snagging or warranty period. After that, or if their repair keeps failing, we can do it with our one-year guarantee.
When to call us in Ecchinswell
When the heating goes on in the first winter, the house dries fast. Gaps open along skirting, frames and worktops.
Common reasons people contact us include:
- Sealant applied over dusty or wet surfaces
- New-build shower sealant that has already split
- Second-fix sealing on new plots
- Gaps between new skirting and floors
In and around Ecchinswell, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Questions to ask before booking
- When the joint can take water or movement
- How long the guarantee is
- How the surfaces are prepared before sealing
- Is the old sealant removed completely?
Joints and finishes in Ecchinswell homes
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For new homes near Thatcham station, it’s worth checking the sealant early, while snags are still fresh.
Ecchinswell is about 5 miles south of Newbury, in West Berkshire. Ecchinswell gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. 155 places in West Berkshire are on our list. There’s also a page for Reading, roughly 15 miles from Ecchinswell.
Postcode districts we cover here for new build mastic: RG20. New build mastic is available to properties on Mill Lane, Oakfields Close and Ecchinswell Road. Nearby, we also carry out new build mastic in Kingsclere (2 miles east), Bishop's Green (2 miles north), Headley (2 miles north-east), Plastow Green (2 miles north-east) and Mill Green (3 miles north-east). We also work in nearby towns such as Newbury (5 miles north), Thatcham (5 miles north), Burghfield Common (11 miles north-east), Speenhamland (5 miles north), Hungerford (12 miles north-west) and Spencers Wood (14 miles east).
Near you in Ecchinswell
Around Ecchinswell, our work takes us to homes and buildings near The Royal Oak pub and The Clere School, among other places. The nearest railway station is Thatcham station, roughly 4.6 miles north of the centre. Well-known places in the area include West Berkshire Community Hospital (5.1 miles north) and Old Chapel Textile Centre (2.8 miles north). Green spaces nearby include Ladle Hill and Audrey's Meadow.