Kent · England
New-build mastic & snagging in Keycol, Kent
New-build sealant joints in Keycol need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Skirting joints opening in the first winter
- Smeared, uneven beads picked up at snagging
- Gaps behind new kitchen upstands
The process
On the day, we start by going over the job with you, so you know exactly what we’re doing. We protect the surfaces around the joints before any work begins. The work normally takes anything from a few hours to several days, depending on the number of plots. Somewhere as small as Keycol, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we work through your snagging list or plot schedule with you.
- 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.
- We check every joint and tell you how long each needs to cure.
Getting ready for the visit
- Clear the area around the work
- On commercial sites, let us know about site rules
- Mention any leaks or damp you’ve noticed
How to get a quote
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or drop us an email.
Related advice
New build mastic in Keycol
Some new-home owners let the house settle before resealing. That makes sense for small gaps that are just cosmetic, but a seal that’s letting water through needs doing now. If you have frame joints opening as the plaster dries and sealant that never bonded to the surface, we can put it right.
Work in a small place like Keycol just needs the journey and access planning, and once on site, the job is the same as anywhere.
Each job carries a 12-month guarantee, whatever its size.

- Where
- Keycol (ME9)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Nearby places to Keycol
Also in Keycol
FAQs for Keycol
Do you cover smaller places like Keycol?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Is Keycol in your area for new build mastic?
Yes. We work across London and the South East, and Keycol is part of that. Just call 0345 464 0079 or send us an email with a few details of the job.
Do you use white or clear sealant?
Most bathroom joints are white or clear, but other colours are available. We choose one to suit the room and agree it with you.
Are you fully insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
What do you need from me for a quote?
Let us know what needs doing and where, plus pictures if you have them. We will ask anything else we need to know.
Will the old sealant be removed?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Can you quote for more than one area?
Of course. Doing several areas at once is normally more efficient, so mention them when you ask for a quote.
Do I need to be at home?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
New build mastic in Keycol: local notes
Keycol is within about 3 miles of the coast. New homes near the sea put their outside mastic to work from day one, 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.
Around Keycol, as everywhere, new build mastic is only as good as the preparation behind it.
Keycol is about 2 miles west of Sittingbourne, in Kent. Anywhere in ME9, we can carry out new build mastic at your property. Keycol is one of 922 towns and villages in Kent where we work for new build mastic. For nearby work, see our Chelmsford page (28 miles or so).
We cover every part of ME9 for new build mastic and the streets around it. Whether your property is on Rooks View, Hill Farm View and Rook Lane or a nearby road, our applicators can take on the job. We also cover the places around Keycol: Bobbing (1 mile east), Chestnut Street (1 mile south), Newington (1 mile west), Danaway (1 mile south-west) and Oad Street (2 miles south). Within a short drive, we also cover Maidstone (9 miles south-west), Gravesend (15 miles north-west), Whitstable (15 miles east), Faversham (9 miles east), Minster (7 miles north-east) and Kings Hill (13 miles south-west).
Landmarks near Keycol
Locally, jobs take us to homes and businesses close to Westlands School and George Inn, among other places. Keycol’s nearest station is Newington station, about 1.1 miles west. A little further out are Court Hall Museum (1.8 miles east) and Bayford Court (2.3 miles east).
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
Why it’s worth doing now in Keycol
A failed shower or bath seal in a new home lets water into floors and walls that are still drying out. Dealing with it early keeps the damage away from ceilings, floors and finishes. Around Keycol, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
Why Keycol customers choose us
- Sanitary silicone with an anti-fungal additive in wet areas
- Full insurance on every job
- Tidy, careful work
- Domestic, commercial and hotel work
Landlords, agents and businesses in Keycol
Letting agents and landlords in Keycol can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
What the job involves on each surface
Skirting and floors
Floors and skirting move as the house dries and the heating runs. Caulk cracks; a flexible sealant moves with it.
Bathrooms and en suites
Trays and baths in new builds settle as they’re used. We reseal once the old bead is fully out and baths are filled before sealing.
Signs you need new build mastic in Keycol
On many sites, sealant goes on in the final rush before handover. Dusty, unprimed joints are common, so the bead never bonds properly.
The problems people usually mention when they call are:
- Gaps between new skirting and floors
- Smeared, uneven beads picked up at snagging
- Frame joints opening as the plaster dries
- Joints pulling apart as timber shrinks
For new homes near Newington station, it’s worth checking the sealant early, while snags are still fresh.
Comparing quotes
- How long the guarantee is
- Whether VAT is included
- How the surfaces are prepared before sealing
- Who does the work, and how experienced they are
What affects the quote in Keycol
Every job gets its own quote. This is what makes a difference:
- Working hours on commercial sites
- Whether old sealant or filler has to be cut out
- Whether there’s mould to deal with
- How easy the joints are to reach
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we’ll go through it with you.
Asking for a quote
When you contact us, these details help:
- The rough size of the job
- If someone has resealed it before
- The problem you’ve noticed
- Where the job is, and your postcode
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work and give you a clear quote.
