West Sussex · England
New Build Mastic in Keynor Estate
We cover Keynor Estate for plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly.
- Beads laid onto grit and dust from the build
- Second-fix sealing on new plots
- Shower seals failing in the first year or two
How the job changes by surface
Plot handovers
Good preparation at handover saves snagging later. We clean out building dust before sealing and prime where the product needs it.
Skirting and floors
Floors and skirting move as the house dries and the heating runs. We use a flexible product rather than caulk.
New build mastic for homes and businesses in Keynor Estate
New homes move as they dry out. Timber dries and shrinks, and baths and trays settle, so sealant that was laid quickly before handover often cracks. We work on show homes, skirting & floors and plot handovers, and common reasons people get in touch are second-fix sealing on new plots and untidy sealant flagged on a snagging list.
Older homes in small places like Keynor Estate often have timber floors that move with the seasons, so skirting and threshold joints need a flexible sealant rather than a rigid filler.
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.
- Location
- Keynor Estate (PO20)
- Region
- West Sussex
- Cover
- A year, on every job
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What we do, step by step
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take anything from a few hours to several days, depending on the number of plots. Somewhere as small as Keynor Estate, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each joint is checked for movement before work begins.
- We remove the failed sealant and clean the joints.
- We make sure the joints are dry and prime them if needed.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- We check every joint and leave you with the cure times.
How to prepare
- Mention any leaks or damp you’ve noticed
- On commercial sites, let us know about site rules
- Plan for the work area to be out of bounds to pets and children
Get a quote
If you are in Keynor Estate and need new build mastic, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
Read more
FAQs for Keynor Estate
Do you work for landlords with property near Chichester station?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear price.
Do you cover smaller places like Keynor Estate?
Yes. Keynor Estate 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.
How long does new build mastic take?
As a guide, most jobs take a few hours in a single home. Larger jobs naturally take longer, and we’ll tell you how long to expect.
Will there be a smell?
Some sealants have a smell while they cure. Opening a window helps.
Where are you based?
We work from Crawley. Our applicators cover Keynor Estate.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Can I send you my snagging list?
Yes. Photos of each sealant item help us quote. If something isn’t sealant, we’ll say so.
New homes and floors in Keynor Estate
Keynor Estate is within about 1 mile of the coast. New homes near the sea put their outside mastic to work from day one, so any gaps are best picked up early. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In and around Keynor Estate, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Keynor Estate is about 2 miles north of Selsey, in West Sussex. For new build mastic in and around Keynor Estate, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We’re based in Crawley and cover West Sussex. Keynor Estate is one of 371 places in West Sussex where we work. There’s also a page for Portsmouth, about 13 miles away.
Here we cover the PO20 postcode area for new build mastic. New build mastic is available to properties on Chalk Lane and Cow Lane. Neighbouring places we cover for new build mastic include Sidlesham (1 mile north-east), Street End (1 mile north), Church Norton (2 miles south-east), Sidlesham Common (2 miles north) and Pagham (2 miles east). We also work in nearby towns such as Bognor Regis (5 miles east), Chichester (5 miles north), Littlehampton (12 miles east), Emsworth (8 miles north-west), Rustington (13 miles east) and Angmering (14 miles east).
Around Keynor Estate
In Keynor Estate, that means homes and buildings near The Academy, among other places. Keynor Estate’s nearest station is Chichester station, roughly 4.4 miles north of the centre. A little further out are Selsey Lifeboat Museum (2.9 miles south) and St Richard's Hospital (5.2 miles north).
Landlords, agents and businesses in Keynor Estate
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.
Landlords and letting agents in Keynor Estate can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
What affects the quote in Keynor Estate
Some jobs are bigger than they look, and some smaller. The main factors:
- How easy the joints are to reach
- The size of the job
- The number of rooms or windows
- Mould in or behind the old joints
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
Asking for a quote
There’s no need for technical detail. Just tell us:
- Roughly how big the job is
- Whether it has been sealed before
- The type of property
- Access, such as stairs, a lift or height
For a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before any work starts.
Keeping the joints in good condition
A little care helps the new joints last. Our advice:
- Act quickly if a seal starts to leak
- Raise failed sealant with the developer while you are covered
- Wipe joints with warm soapy water
- Photograph failed sealant before it’s redone
Avoid standing on the rim of the bath or the edge of the tray in the first few weeks. Report any movement in a bath or tray.
Don’t let the snagging period run out with sealant problems unreported. After that, putting it right may fall to you, so raise it early.
Why it’s worth doing now in Keynor Estate
The builder is generally the first port of call while the snagging or warranty period runs. If it keeps failing or isn’t dealt with, we can reseal it properly. Older cottages and farmhouses around Keynor Estate can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What you get with us
- Sanitary silicone with an anti-fungal additive in wet areas
- Every job guaranteed for a year
- A sealant colour to suit the surroundings
- Over 20 years’ experience
Take a look at what affects the cost or customer reviews.
Signs you need new build mastic in Keynor Estate
Once people move in, baths and trays take weight and bed down. A bath sealed empty drops slightly when filled, straining the joint and the sealant may split.
Keep an eye out for any of the following:
- Plot mastic for developers ahead of handover
- Beads laid onto grit and dust from the build
- Worktop and upstand sealant coming away
- Cracked sealant around new window and door frames
For new homes near Chichester station, it’s worth checking the sealant early, while snags are still fresh.
What your quote should include
- What preparation is included
- How the colour is chosen
- Whether they’re fully insured
- What happens if they find a problem under the old sealant