Greater London · England
New-build mastic & snagging in Primrose Hill, Greater London
New build mastic across Primrose Hill and nearby, with old sealant always removed completely and a 12-month guarantee.
- Beads laid onto grit and dust from the build
- Frame joints opening as the plaster dries
- Gaps behind new kitchen upstands
What happens on the day
You don’t need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the work takes a few hours for most snagging lists, longer for a run of plots in most cases. In a London area like Primrose Hill, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- 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.
- The finished joints are checked and the cure times given.
How to prepare
- Mention any tricky access
- Clear the area around the work
- Let us know about earlier repairs to the joints
Getting a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or drop us an email.
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About our new build mastic in Primrose Hill
Some new-home owners let the house settle before resealing. That makes sense for small gaps that are just cosmetic, but a seal that is letting water through needs doing now. Common call-outs are for cracks appearing as a new home settles and frame joints opening as the plaster dries, across plot handovers, kitchens and bathrooms & en suites.
Across London, commercial floors have movement joints that break down under heavy foot traffic, and new homes need their plot mastic finished properly before handover, in Primrose Hill and beyond.
A one-year guarantee comes as standard, so you’re covered after we’ve gone.
- Where
- Primrose Hill (NW3, NW1, NW8)
- Wider area
- Greater London
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
When to call us in Primrose Hill
The wrong product is sometimes used in the wrong place: caulk where water collects, or a rigid product on a moving joint. Neither lasts long.
Keep an eye out for these signs:
- Sealant work across a run of new homes
- Sealant that never bonded to the surface
- Gaps behind new kitchen upstands
- Cracked caulk along new skirting
As a London address, Primrose Hill can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Questions to ask before you book
- Who turns up on the day
- What product goes in the joint
- What guarantee comes with the work
- What happens if they find a problem under the old sealant
New homes and floors in Primrose Hill
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. Much of London’s new housing is flats in larger developments, where snags may need reporting through the developer or the managing agent.
If you’ve bought a new home near Kentish Town West station, the sealant around baths, showers and frames is worth checking in the first year or two.
Primrose Hill is about 1 mile south-east of Hampstead, in Greater London. Whether you’re in the middle of Primrose Hill or further out, we cover new build mastic for every kind of property, from flats and houses to offices and hotels. Our Greater London coverage runs to 764 places, Primrose Hill among them.
All of NW3, NW1 and NW8 is covered for new build mastic. Streets in the area include Eton Road, Oval Road and Regal Lane, all of which we cover. You will find Primrose Hill on the A5205, so it’s easy for us to get to with everything needed for new build mastic. Other places close to Primrose Hill include Haverstock (1 mile north), Belsize Park (1 mile north), Chalk Farm (1 mile north-east), South Hampstead (1 mile west) and Swiss Cottage (1 mile west). Within a short drive, we also cover London (4 miles south-east), Kensington (3 miles south-west), Shoreditch (4 miles east), Walthamstow (7 miles north-east), Hoxton (3 miles east) and Whitechapel (4 miles south-east).
Landmarks near Primrose Hill
Typical jobs here are in homes near Cecil Sharp House, Haverstock School and Regent's Park and the streets around them. Nearby too are St. Mary's Town and Country School (0.5 miles north-west) and Princess of Wales pub (within half a mile east). Primrose Hill’s nearest station is Kentish Town West station, about 0.7 miles north-east. A little further out are Montfichet's Tower (3.1 miles south-east) and Wellington Hospital (0.7 miles south-west). Open spaces near Primrose Hill include Parliament Hill and Adelaide Nature Reserve.
What affects the quote in Primrose Hill
Some jobs are bigger than they look, and some smaller. The main factors:
- How many rooms, windows or areas are involved
- How much there is to do
- Working hours on commercial sites
- The old material and how stubborn it is
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.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- Whether it’s a home or a business
- Roughly how big the job is
- Pictures of the joints, sent by email
- Any access issues, like height or stairs
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job.
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Ventilate bathrooms well, especially in the first year
- Follow the cure time we give you
- Do not seal over failed sealant yourself
- Look at the sealant regularly in the first couple of years
Do not stand on the bath edge or the lip of the tray while the sealant cures. If a bath or tray moves when you stand in it, get it looked at.
If a shower tray or bath seal splits in the first year, look for movement. Have it resealed, and the tray or bath checked, before it gets worse.
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Disputes or warranty claims with your builder
- Leaks from pipes, valves or wastes, which need a plumber
- Cracked trays, tiles or worktops
If you’re not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
What we seal
- Bathrooms & en suites
- Windows & doors
- Skirting & floors
- Plot handovers
- Show homes
- Kitchens
Why it’s worth doing now in Primrose Hill
If you’re still in the builder’s snagging or warranty period, ask them to put it right first. If it’s slow, or the same joint keeps failing, a proper reseal from a specialist is the next step. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why us?
- Tidy, careful work
- 180+ five-star Google reviews
- We’re fully insured
- Every job guaranteed for a year
What the job involves on each surface
Bathrooms and en suites
Trays and baths in new builds settle as they’re used. The joint is stripped back before the new bead goes in and baths are filled before sealing.
Skirting and floors
Gaps under skirting are one of the most common new-build snags. We seal it with a flexible sealant that copes with the movement.
FAQs for Primrose Hill
Do you cover Primrose Hill for new build mastic?
Yes, Primrose Hill 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.
Do you work for landlords with property near Kentish Town West station?
Yes. We work for landlords and letting agents as well as householders. Just call 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear quote.
Do you use white or clear sealant?
White and clear are the most common, but other colours are available. We choose one to suit the room before we begin.
How long will you be here?
Most jobs take a few hours in a single home, including the preparation. We’ll confirm how long when we quote.
Will you leave a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Can I send you my snagging list?
Yes. Send it with pictures and we will quote for the sealant items. If something isn’t sealant, we will say so.
What do you need from me for a quote?
A short description and the location, plus pictures if you have them. We will ask anything else we need to know.
How long should I leave it?
Different products cure at different speeds, so follow the cure time we give you when we finish.