Kent · England
New-build mastic & snagging in Northdown, Kent
New build mastic for Northdown, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Cracks appearing as a new home settles
- Skirting joints opening in the first winter
- Internal frame sealant that has split
About our new build mastic in Northdown
Dust is the enemy of new-build sealant. We clean every joint thoroughly and prime where the surface and product need it, so the sealant actually sticks instead of bonding to the dust. We work on windows & doors, show homes and skirting & floors, and people most often call us about skirting joints opening in the first winter and leaking shower tray seals in a new home.
For a new home in or near Northdown, it’s worth checking the sealant early. Gaps at skirtings, shower seals pulling away and missing mastic around frames are common snags.
The work is covered for a year after we finish. If there’s a problem with it, please ring 0345 464 0079 or drop us an email.
- Where
- Northdown (CT9, CT10)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
How it works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for most snagging lists, longer for a run of plots, and the area is left clean. In a smaller place like Northdown, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- We look at why each joint failed, including any movement.
- We remove the failed sealant and clean the joints.
- Joints are dried and primed where the product calls for it.
- Baths are filled with water, then the new sealant is applied.
- We check every joint and leave you with the cure times.
Before we arrive
- Mention any leaks or damp you’ve noticed
- Tell us about any previous sealing or DIY attempts
- Try not to wet indoor joints just before the visit
Get a quote
If you’re in Northdown and need new build mastic, ring 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
Read more
New build mastic in Northdown: local notes
Northdown is close to the coast. Plot mastic on new homes near the coast takes more weather than it would inland, so any gaps are best picked up early. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Around Northdown, as everywhere, new build mastic is only as good as the preparation behind it.
Northdown is about 2 miles east of Margate, in Kent. Northdown gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our area takes in 922 places across Kent, large and small. For nearby work, see our Chelmsford page (47 miles or so).
Postcode districts we cover here for new build mastic: CT9 and CT10. Local streets include Old Road, Holly Lane and Green Lane. Close by, we work in Palm Bay (1 mile north-west), Cliftonville (1 mile west), Kingsgate (1 mile east), St Peter's (1 mile south) and Broadstairs (2 miles south). Within a short drive, we also cover Ramsgate (3 miles south), Deal (12 miles south), Herne Bay (12 miles west), Walmer (13 miles south), St Lawrence (3 miles south) and Newington (3 miles south-west).
Near you in Northdown
In Northdown, that means homes and buildings near Captain Digby Inn and Dane Court Grammar School and the streets around them. Northdown’s nearest station is Broadstairs station, roughly 1.8 miles south. A little further out are Westwood Cross (2.1 miles south-west) and Queen Elizabeth the Queen Mother Hospital (1.4 miles south-west).
What affects the cost of new build mastic
We quote each job individually. This is what makes a difference:
- The number and length of the joints
- How easy the joints are to reach
- Which sealant suits the joint
- How much old sealant there is and how hard it is to remove
What you pay reflects the work, not a rough estimate. That is why we ask about the job first and give you a clear price before work begins.
What to tell us for a quote
What to tell us when you ask for a quote:
- The problem you’ve noticed
- Where the property is
- Access, such as stairs, a lift or height
- Photos by email, if that is easy
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, ring 0345 464 0079 or send us an email.
What sealant work cannot fix
We won’t take on work that won’t last, so here’s what sealant can’t put right:
- Disputes or warranty claims with your builder
- Baths and trays that move too much for sealant to cope with
- Leaking fittings rather than failed sealant
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Where we work in Northdown
- Windows & doors
- Skirting & floors
- Plot handovers
- Kitchens
- Show homes
- Bathrooms & en suites
Northdown: your questions answered
Is Northdown within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you do new build mastic in Northdown?
Yes. We work across London and the South East, and Northdown is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing, and we’ll give you a clear quote.
Do you take out the old sealant first?
Yes, every time. New sealant will not bond properly to old, so the joint is cleaned back first.
What do you put in the joint?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Will you leave a mess?
We keep the work tidy. Nearby surfaces are protected, and the area is left clean when we finish.
Should I wait before resealing?
That depends on the joint. A leaking shower or bath seal should be redone straight away, while small cosmetic gaps can wait a while.
Where do you work from?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
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 with our 12-month guarantee.
Different surfaces, different methods
Plot handovers
Send us the schedule and any sealant specification. We seal bathrooms, kitchens, frames and floors as agreed.
Show homes
Tired or marked sealant in a show home can be renewed. We cut it out and reseal neatly.
Nearby places to Northdown
Also in Northdown
What happens if it’s left?
A hairline gap at a skirting can wait, but a leaking seal can’t. If you’re unsure which you have, call 0345 464 0079 or send us an email with pictures and we will give you a straight answer. Homes in smaller places like Northdown can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What you get with us
- Quality sealants from Arbo and Everbuild
- Any old sealant cut out fully, not covered over
- An ARBOMaster approved applicator
- Colour agreed with you before we start
For landlords and businesses
If you manage several properties in or around Northdown, several properties can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
In hotels, rooms out of use cost money, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
Do you need new build mastic in Northdown?
Once people move in, baths and trays take weight and bed down. If a bath wasn’t filled when it was sealed, the bead is stretched the first time it’s used and can tear.
If you can see any of these, it’s time to have the joints looked at:
- Leaking shower tray seals in a new home
- Beads laid onto grit and dust from the build
- Internal frame sealant that has split
- Sealant work across a run of new homes
If you’ve bought a new home near Broadstairs station, the sealant around baths, showers and frames is worth checking in the first year or two.
Comparing quotes
- How the surfaces are prepared before sealing
- How long the guarantee is
- What product goes in the joint
- How much experience the applicator has