Portsmouth · England
New-build mastic & snagging in North End, Portsmouth
Plot mastic for developers and snagging failed sealant in new homes for North End, backed by a 12-month guarantee. Call for a quick quote.
- Beads laid onto grit and dust from the build
- Gaps opening as the house dries out and settles
- Gaps between new skirting and floors
The process
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a few hours for most snagging lists, longer for a run of plots. A visit to North End is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- Every bit of the old builder’s sealant is cut out, with no layer left behind.
- Joints are vacuumed and cleaned of building dust.
- Primer goes on where the surface and product need it, then the new sealant.
- We tool every joint neatly and tell you when each area can be used.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Tell us about any previous sealing or DIY attempts
- Plan for the work area to be out of bounds to pets and children
Getting a quote
For a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Advice
How we handle new build mastic in North End
New homes move as they dry out. Timber shrinks, plaster dries and baths and trays bed down, so sealant that was laid quickly before handover often cracks. If you have skirting joints opening in the first winter and gaps opening as the house dries out and settles, we can help, on plot handovers, bathrooms & en suites and kitchens alike.
In and around North End, floors range from older timber boards to tiles and newer finishes, from timber that moves with the seasons to tiles laid on concrete. Skirting and threshold joints need a sealant that suits the floor.
A 12-month guarantee comes as standard.
- Where
- North End (PO2, PO1)
- Wider area
- Portsmouth
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Common problems we fix in North End
New homes are full of moisture from plaster, screed and concrete, and it dries out over the first couple of years. As it does, timber shrinks and joints open and the sealant has to cope with the movement.
Any of these means the joints need attention:
- Gaps behind new kitchen upstands
- Untidy sealant flagged on a snagging list
- Beads laid onto grit and dust from the build
- Plot mastic for developers ahead of handover
Around North End, as everywhere, new build mastic is only as good as the preparation behind it.
What to look for in a quote
- Is the old sealant removed completely?
- The length of the guarantee
- What the cure time is
- Who does the work, and how experienced they are
Honest limits
New sealant can’t fix everything, and we’d rather say so up front. Sealant will not put right:
- Settlement cracks that need a surveyor
- Movement caused by a poorly fitted tray or bath
- Broken tiles or a split tray
If you are not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Surfaces we seal
- Show homes
- Skirting & floors
- Windows & doors
- Bathrooms & en suites
- Plot handovers
- Kitchens
Different surfaces, different methods
Bathrooms and en suites
Shower trays in new homes often move slightly in the first year. We reseal once the old bead is fully out and baths are filled before sealing.
Plot handovers
We work through plots to your schedule, sealing each room ready for handover. Joints are prepared properly before sealing to keep callbacks down.
Common questions in North End
I let a flat near Hilsea station. Can you help?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Do you cover smaller places like North End?
Yes. North End is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for developers?
Yes. We take on second-fix sealant work across new plots. Good preparation keeps snagging to a minimum.
Should I go to my builder first?
Start with the builder if you’re in the snagging or warranty period. Once that’s done, or if they will not put it right, we can reseal it properly.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done.
Do you do commercial work?
Yes, regularly. We can plan bigger jobs in stages.
Is the work guaranteed?
Yes, always. Each job is guaranteed for twelve months, large or small.
Is it worth resealing while the house is still settling?
Where water is getting through, don’t wait. Small gaps that are just cosmetic can be resealed once movement has slowed.
Also in North End
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Record problems with dated pictures
- Do not seal over failed sealant yourself
- Wait for the cure time before using a resealed shower
- Don’t wait for the house to settle if water is getting through
Ventilation matters in a new home, which is still drying out. Run the fan or open a window after bathing to help keep mould away.
Lifting sealant traps moisture and mould behind it. Dealing with it before it goes black keeps the job straightforward.
Joints and finishes in North End homes
North End is within about 1 mile of the coast. Plot mastic on new homes near the coast takes more weather than it would inland, so it’s worth checking at snagging. 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.
For new homes near Hilsea station, it’s worth checking the sealant early, while snags are still fresh.
North End is about 1 mile north of Portsmouth, in Portsmouth. Homes, rented property, offices and hotels in North End is covered for new build mastic. Every job comes with our 12-month guarantee. North End is one of 19 towns and villages in Portsmouth where we work for new build mastic.
Work in PO2 and PO1 works the same way as everywhere else we cover. You will find streets such as Knox Road, Croft Road and Kirby Road. Main roads around North End include the A2047, so getting to you is simple. Close by, we work in Rudmore (1 mile south-west), Tipner (1 mile west), Portsmouth (1 mile south), Copnor (1 mile south-east) and Hilsea (1 mile north-east).
Local landmarks in North End
In North End, that means homes and buildings near Mayfield School, Alexandra Park and St Edmund's Catholic School and the streets around them. The nearest railway station is Hilsea station, roughly 1.2 miles north-east of the centre. Well-known places in the area include Charles Dickens Birthplace Museum (0.8 miles south-west) and Portchester Castle (2.1 miles north-west). Open spaces near North End include Portsdown Hill and Milton Locks.
Why deal with it now?
The builder is normally the first port of call while the snagging or warranty period runs. If it’s slow, or the same joint keeps failing, a proper reseal from a specialist is the next step. Homes in smaller places like North End 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.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
What you get with us
- Neat joints and a tidy finish
- Over 20 years’ experience
- Rated 4.9 stars on Google
- We’re fully insured
Take a look at how sealant jobs are priced and our reviews.