Kent · England
New Build Mastic in Harvel
We cover Harvel for plot mastic for developers and snagging failed sealant in new homes. Old sealant removed completely, joints prepared properly.
- Gaps behind new kitchen upstands
- Sealant applied over dusty or wet surfaces
- Messy sealant that spoils new finishes
What new build mastic looks like in Harvel
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.
In and around Harvel, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Harvel is about 6 miles south of Gravesend, in Kent. Every kind of property in Harvel is covered for new build mastic. The work is guaranteed for a year. 922 places in Kent are on our list, from the larger towns to small villages. You can also see our page for London, about 23 miles away.
Here we cover the DA13 postcode area for new build mastic. If you need new build mastic at a property on St Francis Road, Hart Lane and Harvel Street or a nearby road, we can help. Close by, we work in Priestwood Green (1 mile north), Culverstone Green (1 mile south-west), Priestwood (1 mile north), South Street (1 mile north-west) and Vigo Village (1 mile south). Larger places within reach include Maidstone (9 miles south-east), Dartford (9 miles north-west), Sevenoaks (9 miles south-west), Royal Tunbridge Wells (15 miles south), Gravesend (6 miles north) and Tonbridge (11 miles south).
Landmarks near Harvel
We work in homes and buildings around Meopham School and Trosley Country Park. The nearest railway station is Sole Street station, roughly 2.7 miles north of the centre. Other landmarks nearby include Leybourne Castle (3.6 miles south-east) and Coldrum Long Barrow (1.6 miles south). Open spaces near Harvel include Ranscombe Farm.
New build mastic in Harvel, done properly
Across Harvel, we work for both new-home owners and the builders handing those homes over. One shower or a whole phase of plots, the method does not change: remove, clean, prime where needed, then a neat new bead. We’re often asked to deal with sealant work across a run of new homes and worktop and upstand sealant coming away, on kitchens, windows & doors and show homes.
Older homes in small places like Harvel often have timber floors that move with the seasons, which is why skirting and threshold joints need a flexible sealant, not filler.
Your job is guaranteed for a year, as with all our work.
- Where
- Harvel (DA13)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Harvel
What else we do in Harvel
Landlords, agents and businesses in Harvel
Letting agents and landlords in Harvel can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
How it works
The work is kept neat and contained to the area we are working on. The job generally takes a few hours for most snagging lists, longer for a run of plots. Somewhere as small as Harvel, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked for movement before any work starts.
- Old sealant is cut out and the joints cleaned.
- 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.
- The finished joints are checked and the cure times given.
Before we arrive
- Keep pets and children clear of the area while we work
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
Ask for a quote
For a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. You’ll have a clear quote before work begins.
Advice
Surface by surface
Plot handovers
Plot mastic is carried out to the developer’s schedule. Joints are prepared properly before sealing so the sealant lasts.
Bathrooms and en suites
New-build bathrooms and en suites are where sealant fails most often. The old sealant comes out and anti-fungal sanitary silicone goes in after cleaning and priming.
Why act early in Harvel
A quick bead over the top of the old sealant can look fine at first, but it cannot bond to what’s underneath. Taking it all out and starting again is the only way to get a lasting seal. Where a wall is exposed, as many are in small places like Harvel, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Why book with us
- A sealant colour to suit the surroundings
- 4.9 on Google from 180+ five-star reviews
- You choose the colour before work begins
- A choice of colours where the product allows
See what affects the cost and our reviews.
Keeping the joints in good condition
Looking after new joints is easy:
- Use the extractor fan every time you shower
- Do not seal over failed sealant yourself
- Don’t wait for the house to settle if water is getting through
- Report sealant problems to your builder during the snagging period
Wipe the sealant with warm soapy water. Keep scourers and harsh chemicals off it.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Small faults turn into leaks if left in a busy bathroom.
Common questions in Harvel
Can you help a landlord with a rental near Sole Street station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear price.
Do you cover smaller places like Harvel?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Will the old sealant be removed?
Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
What information do you need?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or drop us an email.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Do you take on second-fix sealing for builders?
Yes. Second-fix sealing in bathrooms, kitchens, frames and floors is part of what we do. Good preparation keeps snagging to a minimum.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Where is Mr Mastic based?
We’re a Crawley-based firm. Our area covers South East England, London and Scotland.
Should I try it myself first?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Common problems we fix in Harvel
Sealant applied onto damp surfaces doesn’t bond well. On a busy site, joints aren’t always given time to dry.
Common reasons people contact us include:
- Shower seals failing in the first year or two
- Worktop and upstand sealant coming away
- Cracks appearing as a new home settles
- Cracked sealant around new window and door frames
For new homes near Sole Street station, it’s worth checking the sealant early, while snags are still fresh.
What your quote should include
- Whether you can choose the colour
- The length of the guarantee
- What the cure time is
- How much experience the applicator has