Medway · England
Grain New Build Mastic
Specialist new build mastic for Grain: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Internal frame sealant that has split
- Leaking shower tray seals in a new home
- Sealant applied over dusty or wet surfaces
When to call us in Grain
On many sites, sealant goes on in the final rush before handover. Joints are not always cleaned of dust or primed, so the bead never bonds properly.
Most people get in touch when they notice something like this:
- Leaking shower tray seals in a new home
- Sealant that never bonded to the surface
- Worktop and upstand sealant coming away
- Frame joints opening as the plaster dries
Around Grain, as everywhere, new build mastic is only as good as the preparation behind it.
Comparing quotes
- How long the guarantee is
- Who does the work, and how experienced they are
- What insurance they hold
- Whether VAT is included
How we handle new build mastic in Grain
We work in new homes and on new-build sites across Grain. One shower or a whole phase of plots, the method doesn’t change: remove, clean, prime where needed, then a neat new bead. We work on kitchens, bathrooms & en suites and windows & doors, and the jobs we see most are smeared, uneven beads picked up at snagging and cracks appearing as a new home settles.
Work in a small place like Grain just needs the journey and access planning, and the work itself is the same as on any site.
Each job carries a 12-month guarantee, large or small.
- Where
- Grain (ME3)
- Region
- Medway
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about new build mastic in Grain
Do you cover smaller places like Grain?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
I let a flat near Sheerness-On-Sea station. Can you help?
Yes. We work for landlords and agents as well as homeowners. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Who should fix failed sealant in a new build?
Your builder, if you are still in their snagging or warranty period. After that, or if their repair keeps failing, we can do it.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
How long does new build mastic take?
A typical job takes a few hours for most snagging lists, longer for a run of plots, including preparation and clearing up. We will confirm how long when we quote.
Will you just run a new bead over the existing one?
No. Fresh silicone does not stick to the old layer, so sealing over the top fails quickly. The old sealant always comes out first.
Do I need to be at home?
We need access to the joints, so we will agree that with you when we book. Indoors, that normally means someone at home.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
New build mastic around Grain
Grain 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. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For new homes near Sheerness-On-Sea station, it’s worth checking the sealant early, while snags are still fresh.
Grain is about 5 miles north-west of Minster, in Medway. Every kind of property in Grain can book us for new build mastic, old or new, large or small. The work is guaranteed for a year. Across Medway, we cover 68 places, and Grain is one of them. Our Chelmsford page covers work nearby.
Postcode districts we cover here for new build mastic: ME3. If you need new build mastic at a property on High Street, Power Station Road and Chapel Road or anywhere close by, we can help. Nearby, we also carry out new build mastic in Wallend (1 mile west), Blue Town (2 miles south-east), Sheerness (2 miles south-east), Queenborough (3 miles south-east) and Rushenden (3 miles south). We also work in nearby towns such as Gillingham (8 miles south-west), Chatham (10 miles south-west), Rochester (10 miles south-west), Rainham (8 miles south-west), Strood (11 miles south-west) and Luton (10 miles south-west).
What’s near Grain
Typical jobs here are in homes near The Hogarth Inn, among other places. The nearest railway station is Sheerness-On-Sea station, about 2.1 miles south-east of the centre. Other landmarks nearby include Bluetown Heritage Centre (1.8 miles south-east).
Different surfaces, different methods
Plot handovers
Plot mastic is carried out to the developer’s schedule. Joints are prepared properly before sealing.
Show homes
Tired or marked sealant in a show home can be renewed. We cut it out and reseal neatly.
Places near Grain
What else we do in Grain
Landlord and commercial work in Grain
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will give you a quote.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
What happens if it’s left?
Running a new bead over the builder’s sealant might look tidy for a few weeks, but it will not bond to the old layer. A lasting seal starts with removing the old one completely. Where a wall is exposed, as many are in small places like Grain, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Why book with us
- Domestic, commercial and hotel work
- Any old sealant cut out fully, not covered over
- A sealant colour to suit the surroundings
- You choose the colour before work begins
Take a look at our cost guide and customer reviews.
What affects the cost of new build mastic
The quote reflects the job in front of us. We look at:
- Whether there’s mould to deal with
- Any working-time requirements on site
- How much old sealant there is and how hard it is to remove
- The number and length of the joints
The cost depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before work begins.
What we need to know
To make quoting easier, please include:
- How many joints, rooms or windows are involved
- Where the property is
- A few photos by email, if you can
- If someone has resealed it before
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To arrange one, call 0345 464 0079 or drop us an email.
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Look at the sealant regularly in the first couple of years
- Use the extractor fan every time you shower
- Get a leaking seal dealt with right away
- Keep pictures and emails about snagging items
Watch the joints as the house settles. Small gaps can appear as the house dries and can be resealed later.
Mould takes hold quickly in sealant that has gaps or lifted edges. Dealing with it before it goes black saves a harder job later.
How it works
At the end, we look at the finished work together and explain the cure time. The visit itself normally takes a few hours for most snagging lists, longer for a run of plots, depending on the amount of work. Somewhere like Grain needs a little journey planning: 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.
- The old bead comes out in full, with no layer left behind.
- 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.
- Finally, each room is checked and you’re given the cure time.
Preparing for the visit
- Tell us about any water getting in
- Mention if the joints have been sealed before
- Keep children and pets away from the work area
Get a quote
To get a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. You will have a clear quote before work begins.