West Sussex · England
New-build mastic & snagging in Donnington, West Sussex
Our applicators work in Donnington on plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Frame joints opening as the plaster dries
- Gaps opening as the house dries out and settles
- Sealant that never bonded to the surface
Common problems we fix in Donnington
Sealant applied onto damp surfaces doesn’t bond well. On a busy site, joints are not always given time to dry first.
Any of these means the joints need attention:
- Untidy sealant flagged on a snagging list
- Gaps opening as the house dries out and settles
- Frame joints opening as the plaster dries
- Sealant work across a run of new homes
Around Donnington, as everywhere, new build mastic is only as good as the preparation behind it.
Questions to ask before you book
- What insurance they hold
- How much experience the applicator has
- What product goes in the joint
- Is the old sealant removed completely?
How we handle new build mastic in Donnington
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. If you are dealing with messy sealant that spoils new finishes and gaps opening as the house dries out and settles, we can put it right.
Older homes in small places like Donnington often have timber floors that move with the seasons, which is why skirting and threshold joints need a flexible sealant, not filler.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Where
- Donnington (PO20)
- Region
- West Sussex
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Donnington
Also in Donnington
Questions from Donnington
I let a flat near Chichester station. Can you help?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear price.
Can you do new build mastic in Donnington?
Yes, Donnington is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Can you match the sealant colour to my new kitchen or bathroom?
That depends on what the joint meets: white or clear for most sanitary joints, colours for worktops, floors and frames. We’ll agree it with you first.
Do you work through snagging lists?
Yes. Send us the sealant items on the list, with pictures if you can and we’ll give you a quote. We will flag anything that needs another trade.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Can I do it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
How long should I leave it?
Cure times vary by product and the conditions. We tell you how long to leave it before we go.
Different surfaces, different methods
Kitchens
New-kitchen sealant is often applied in a rush. We take it out and reseal neatly, colour-matched where it shows.
Windows and doors
On new builds, external frame sealant can be patchy. It’s resealed with an exterior sealant suited to the frame and wall.
When it isn’t the sealant
Some problems need a builder, plumber or other trade rather than us:
- Broken tiles or a split tray
- Structural cracks in walls or ceilings
- Your warranty claim itself, which is between you and the builder
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think.
What we seal
- Skirting & floors
- Kitchens
- Show homes
- Bathrooms & en suites
- Windows & doors
- Plot handovers
New build mastic around Donnington
Donnington is close to the coast. Plot mastic on new homes near the coast takes more weather than it would inland, so it’s worth checking at snagging. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For new homes near Chichester station, it’s worth checking the sealant early, while snags are still fresh.
Donnington is about 2 miles south of Chichester, in West Sussex. For new build mastic in and around Donnington, please phone 0345 464 0079 or send us an email for a quick quote. We cover West Sussex from our Crawley base, Donnington included. Donnington is one of 371 places in West Sussex we cover for new build mastic. Portsmouth is on our list too, about 13 miles from Donnington.
Jobs for new build mastic in PO20 works the same way as everywhere else we cover. Being close to the B2201, Donnington is easy for our applicators to reach. If you’re just outside Donnington, we cover Hunston (1 mile east), North Mundham (1 mile east), Runcton (2 miles east), Chichester (2 miles north) and Portfield (2 miles north-east). We also work in nearby towns such as Bognor Regis (5 miles east), Selsey (5 miles south), Littlehampton (11 miles east), Emsworth (7 miles north-west), Rustington (12 miles east) and Angmering (14 miles east).
Landmarks near Donnington
We work in homes and buildings around The Blacksmith's Arms Public House. For rail, the closest station is Chichester station, roughly 1.6 miles north of the centre. A little further out are Chichester Cathedral Treasury (1.8 miles north) and St Richard's Hospital (2.5 miles north). The countryside around Donnington includes Nutborne Marshes.
Can I do it myself?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Aftercare tips
After the cure time, these simple habits help:
- Use the extractor fan every time you shower
- Watch for new gaps as the house dries out
- Get a leaking seal dealt with straight away
- Report sealant problems to your builder during the snagging period
Follow the cure time we give you before the area gets wet. Silicone is usually left for about a day to cure enough for use.
If a shower tray or bath seal splits in the first year, look for movement. Have it resealed, and the tray or bath checked, before it gets worse.
What affects the cost of new build mastic
The price is agreed before any work begins. It’s based on:
- Any mould that needs treating
- How easy the joints are to reach
- The size of the job
- Working hours on commercial sites
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Asking for a quote
Before you ask for a quote, have a think about:
- Roughly how big the job is
- If someone has resealed it before
- Whether it’s a home or a business
- The address or postcode of the job
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
What happens on the day
The work is kept neat and contained to the joints we’re treating, so you can get on with your day. The job normally takes anything from a few hours to several days, depending on the number of plots, and we tell you how long to leave it before we go. For a village or hamlet like Donnington, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
- Surfaces are cleaned of building dust and primed where needed.
- We apply a sealant that suits each joint and tool it to a neat finish.
- Finally, each room is checked and you are given the cure time.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Try not to wet indoor joints just before the visit
- Clear the area around the work
How to get a quote
Want a quote for new build mastic? Please phone 0345 464 0079 or email us and tell us about the job. We will explain what we’d do and give you a clear quote before any work starts.