Kent · England
New Build Mastic in Northfleet Green
New build mastic in Northfleet Green from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Sealant that never bonded to the surface
- Internal frame sealant that has split
- Messy sealant that spoils new finishes
New build mastic in Northfleet Green
We never seal over a failed new-build bead. New silicone won’t bond to old silicone, so it all comes out before we clean, dry and reseal. Common call-outs are for skirting joints opening in the first winter and kitchen sealant that has pulled off the wall, across plot handovers, show homes and skirting & floors.
Around Northfleet Green, older homes often have timber floors that move through the year, so skirting and threshold joints need a flexible sealant rather than a rigid filler.
Big or small, it’s backed by our 12-month guarantee in Northfleet Green and across Kent.
- Place
- Northfleet Green (DA13, DA11)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Landlord and commercial work in Northfleet Green
Housing providers, facilities teams and property managers book us too in Northfleet Green and across Kent. Several sites can be quoted together, and we’re fully insured.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
What happens on the day
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours in a single home, depending on the size of the job. Somewhere like Northfleet Green 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.
- Each joint is checked for movement before work begins.
- We remove the failed sealant and clean the joints.
- We make sure the joints are dry and prime them if needed.
- Baths are filled with water, then the new sealant is applied.
- We check every joint and leave you with the cure times.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Try not to wet indoor joints just before the visit
- Tell us about any previous sealing or DIY attempts
Get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.
Related advice
What sealant work cannot fix
We won’t take on work that will not last, so these are the limits:
- Your warranty claim itself, which is between you and the builder
- Settlement cracks that need a surveyor
- Baths and trays that move too much for sealant to cope with
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly.
Surfaces we seal
- Windows & doors
- Bathrooms & en suites
- Skirting & floors
- Show homes
- Kitchens
- Plot handovers
Should I try it myself first?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Why deal with it now?
It often makes sense to do all the sealant items on a snagging list together. You get one visit and one clear quote to plan around. Where a wall is exposed, as many are in small places like Northfleet Green, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, phone 0345 464 0079 or send us an email and we will give you an honest view and a quote.
Why us?
- A 12-month guarantee on all work
- Sealant colour chosen to suit
- Trusted Arbo and Everbuild sealants
- You choose the colour before work begins
Read how sealant jobs are priced and customer reviews.
What new build mastic looks like in Northfleet Green
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In and around Northfleet Green, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint. For new homes near Ebbsfleet International station, it’s worth checking the sealant early, while snags are still fresh.
Northfleet Green is about 1 mile south of Northfleet, in Kent. For new build mastic in and around Northfleet Green, please phone 0345 464 0079 or send us an email for a quick quote. We cover Kent from our Crawley base. Across Kent, we cover 922 places, Northfleet Green among them. You can also see our page for London, roughly 19 miles from Northfleet Green.
Work in DA13 and DA11 is quoted and booked the same way as anywhere else. Local streets include Downs Road and New Barn Road, and we cover them all. Other places close to Northfleet Green include Southfleet (1 mile west), Painters Ash (1 mile north), Istead Rise (1 mile south-east), Hook Green (1 mile west) and Springhead (1 mile north). Further out, we also cover Maidstone (13 miles south-east), Dartford (5 miles west), Sevenoaks (11 miles south-west), Tonbridge (15 miles south), Swanley (7 miles west) and Kings Hill (10 miles south).
Local landmarks in Northfleet Green
We work in homes and buildings around Black Lion pub, Northfleet School for Girls and Saint George's Church of England School, among other places. The nearest railway station is Ebbsfleet International station, roughly 2 miles north. Other landmarks nearby include Gravesham Museum (2.3 miles north-east) and Bluewater (3.3 miles north-west). Not far away are Sawyers Lake.
What affects the quote in Northfleet Green
We do not publish a price list, because jobs vary so much. The quote depends on:
- Whether old sealant or filler has to be cut out
- Mould in or behind the old joints
- How easy the joints are to reach
- Working hours on commercial sites
Doing several joints on one visit usually makes better use of the time than several visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- Any previous sealing or DIY work
- What’s wrong with the joints now
- Access, such as stairs, a lift or height
- The type of property
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.
Nearby places to Northfleet Green
What else we do in Northfleet Green
Northfleet Green: your questions answered
I let a flat near Ebbsfleet International station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
Do you cover Northfleet Green for new build mastic?
Yes, Northfleet Green is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job, and we will send you a clear quote.
Is it normal for sealant to crack in a new home?
It’s common, and there are normally two reasons: movement as the house dries and settles, and sealant laid onto dust without primer. Cutting it out and resealing properly fixes both.
Can you do several jobs on one visit?
Yes. More than one area can be quoted together.
Can you match the sealant colour to my new kitchen or bathroom?
It depends on the joint: white or clear in most bathrooms, and a colour to suit worktops, frames and floors elsewhere. We agree the colour before any work starts.
Can you work on commercial sites?
Yes. Larger jobs can be planned room by room or area by area.
What information do you need?
Only a few details: the address or postcode, what’s wrong and any access issues. Then call 0345 464 0079 or drop us an email.
Who should fix failed sealant in a new build?
Report it to the builder first while you are covered. If it isn’t resolved, we can reseal it properly.
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Resist patching a failed seal with a tube from the DIY shop
- Don’t wait for the house to settle if water is getting through
- Wipe joints with warm soapy water
- Report sealant problems to your builder during the snagging period
Clean the sealant with a mild detergent and a soft cloth. Keep scourers and harsh chemicals off it as they wear the bead.
A failed seal in a new home lets water into joists, plasterboard and ceilings. Early resealing keeps the job small and protects the rest of the house.