Kent · England
New-build mastic & snagging in Otham, Kent
New-build sealant joints in Otham need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Internal frame sealant that has split
- Gaps opening as the house dries out and settles
- Smeared, uneven beads picked up at snagging
New build mastic for homes and businesses in Otham
We never seal over a failed new-build bead. New silicone won’t bond to old silicone, so the joint is cut out, cleaned, dried and resealed. If you’re dealing with second-fix sealing on new plots and beads laid onto grit and dust from the build, we can help, on skirting & floors, plot handovers and kitchens alike.
In smaller places like Otham, new homes tend to come as small developments or single plots. The sealant around baths, showers, frames and skirtings needs to be right from the start.
All of our work is guaranteed for twelve months.
- Place
- Otham (ME15, ME17)
- Wider area
- Kent
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Leave it or put it right?
Resealing everything on a snagging list in one visit is normally simpler than chasing joints one at a time. It’s one visit, one quote and one set of cure times for the lot. In an older home around Otham, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why us?
- You choose the colour before work begins
- We are fully insured
- Trusted Arbo and Everbuild sealants
- A sealant colour to suit the surroundings
Take a look at our cost guide and our reviews.
Common questions in Otham
Do you cover smaller places like Otham?
Yes. Otham is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Otham in your area for new build mastic?
Yes. We work across London and the South East, and Otham is part of that. Just call 0345 464 0079 or email us with a few details of the job.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Should I go to my builder first?
Your builder, if you’re still in their snagging or warranty period. After that, or if their repair keeps failing, we can do it.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
How do I get a quote for new build mastic in Otham?
Every job is different, so each one gets its own quote. For a quick quote, phone 0345 464 0079 or email us with a short description of the job.
What colour sealant will you use?
That depends on what the joint meets: white or clear for most sanitary joints, colours for worktops, floors and frames. We will agree it with you first.
What sealant work cannot fix
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Structural cracks in walls or ceilings
- Damaged fittings that need replacing
- Movement caused by a poorly fitted tray or bath
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
Where we work in Otham
- Bathrooms & en suites
- Skirting & floors
- Windows & doors
- Kitchens
- Show homes
- Plot handovers
Aftercare tips
How long the joints last depends on use and care. We suggest:
- Clean sealant with mild detergent, not abrasives
- Raise failed sealant with the developer while you are covered
- Open a window or run the fan after bathing
- Keep photos and emails about snagging items
Clean the sealant with a mild detergent and a soft cloth. Avoid abrasive pads and strong solvents as they wear the bead.
Report failed sealant to the builder while you’re in the snagging period. After that, putting it right may fall to you.
New build mastic around Otham
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For new homes near Bearsted station, it’s worth checking the sealant early, while snags are still fresh.
Otham is about 2 miles south-east of Maidstone, in Kent. Homes, rented property, offices and hotels in Otham is covered for new build mastic, old or new, large or small. The work is guaranteed for a year. Otham is one of 922 towns and villages in Kent where we work for new build mastic. London is on our list too, about 33 miles from Otham.
We work across the ME15 and ME17 postcode area for new build mastic and the streets around it. That includes homes and businesses on Church Road, Spartall Drive and Ellis Field and the roads around them. If you’re just outside Otham, we cover Willington (1 mile north-west), Park Wood (1 mile south-west), Langley (1 mile south-east), Shepway (1 mile north-west) and Caring (1 mile north-east). Further out, we also cover Ashford (15 miles south-east), Sittingbourne (10 miles north-east), Royal Tunbridge Wells (15 miles south-west), Gravesend (15 miles north-west), Tonbridge (13 miles west) and Faversham (15 miles east).
Local landmarks in Otham
We work in homes and buildings around New Line Learning Academy, Senacre Wood Primary School and Mote Park and the streets around them. For rail, the closest station is Bearsted station, roughly 2.1 miles north. Other landmarks nearby include Kent Fire Brigade Museum (2.4 miles west) and KIMS hospital (2.8 miles north). The countryside around Otham includes Detling Hill.
Different surfaces, different methods
Windows and doors
Internal joints between frames and plaster often crack as a new house dries. We cut out the cracked bead and reseal with a flexible sealant that suits the frame.
Plot handovers
Developers can send the plot schedule and specification and we’ll quote. Sealant work across the plot is covered to the agreed spec.
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Also in Otham
What we’re called out for in Otham
The wrong product is sometimes used in the wrong place: decorators’ caulk in a wet area, or a stiff sealant where there’s movement. Both fail early.
Any of these means the joints need attention:
- Beads laid onto grit and dust from the build
- Shower seals failing in the first year or two
- Plot mastic for developers ahead of handover
- Worktop and upstand sealant coming away
In and around Otham, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Comparing quotes
- Which colour the sealant will be
- What happens if the job turns out different
- Whether the sealant suits the joint
- Is VAT in the price?
What we do, step by step
Every visit runs the same way: we look at the joints together, protect the area around them, do the work and clear up. It normally takes anything from a few hours to several days, depending on the number of plots. Parking around Otham is normally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- We start by going through the snagging items or plot schedule with you.
- Every bit of the old builder’s sealant is cut out, with no layer left behind.
- Joints are vacuumed and cleaned of building dust.
- We prime where needed and apply a sealant suited to each joint.
- Each bead is tooled and the cure times explained.
Getting ready for the visit
- Clear the area around the work
- Let us know about stairs, lifts or work at height
- For business premises, tell us about site rules or sign-in
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, call 0345 464 0079 or email us.