Surrey · England
The Chart New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes in The Chart, with a 12-month guarantee on every job. Call for a quick quote.
- Cracks appearing as a new home settles
- Untidy sealant flagged on a snagging list
- Second-fix sealing on new plots
New build mastic for homes and businesses in The Chart
If your new home has a leaking shower seal, open skirting joints or untidy sealant, we can help. If you’re still within the builder’s snagging or warranty period, tell them first. We are often asked to deal with sealant work across a run of new homes and cracked caulk along new skirting, on plot handovers, kitchens and bathrooms & en suites.
In a village or hamlet like The Chart, new homes are more likely to be a barn conversion or a handful of houses than a big estate. Every one needs its sealant and floor joints done properly, whatever the size of the site.
A 12-month guarantee comes as standard, so you’re covered after we have gone.
- Location
- The Chart (RH8)
- Region
- Surrey
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Your questions about new build mastic in The Chart
Do you cover smaller places like The Chart?
Yes. The Chart is within the area we cover, which takes in towns, villages and rural addresses. 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 help a landlord with a rental near Hurst Green station?
Yes, we work for letting agents and landlords. You can call 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
How do I get a quote for new build mastic in The Chart?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You’ll get a clear quote before work begins.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference.
Should I wait before resealing?
For failed seals that let water through, the best time is now. Cosmetic gaps can wait until the first year or two of movement has passed.
Do you work for hotels and businesses?
Yes. We have worked for hotels, offices and other businesses, and we are fully insured.
Where are you based?
We work from Crawley. We cover The Chart and the rest of Surrey, along with the rest of our area.
What the job involves on each surface
Plot handovers
We work through plots to your schedule, sealing each room ready for handover. Joints are prepared properly before sealing so the sealant lasts.
Show homes
Show homes need sealant that looks right from day one. Every bead is neat and coloured to suit the room.
Places near The Chart
Other services in The Chart
How to look after the new joints
After the cure time, these simple habits help:
- Look at the sealant regularly in the first couple of years
- Resist patching a failed seal with a tube from the DIY shop
- Wait for the cure time before using a resealed shower
- Photograph failed sealant before it’s redone
Don’t stand on the bath edge or the lip of the tray in the first few weeks. If a bath or tray moves when you stand in it, get it looked at.
Early snagging is easier snagging. Left alone, a small crack can become a leak in a busy bathroom.
How it works
The work is kept neat and contained to the area we are working on, so you can carry on as normal. Expect the work to take anything from a few hours to several days, depending on the number of plots, and we explain the cure time before we leave. Somewhere like The Chart needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- 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 down to clean surfaces.
- We clean out the dust and grit left from the build.
- We prime where needed and apply a sealant suited to each joint.
- We tool every joint neatly and tell you when each area can be used.
Preparing for the visit
- 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 earlier repairs to the joints
Ask for a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Related advice
Why act early in The Chart
Sealant done properly at handover means fewer callbacks. Snagging visits for failed sealant cost time on every plot, and they’re avoidable with good preparation. Where a wall is exposed, as many are in small places like The Chart, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before any work starts, so you know where you stand.
Why choose Mr Mastic in The Chart
- A sealant colour to suit the surroundings
- 4.9 on Google from 180+ five-star reviews
- Anti-fungal silicone where joints get wet
- Homes, businesses and hotels
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What we’re called out for in The Chart
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 any of the following:
- Smeared, uneven beads picked up at snagging
- Skirting joints opening in the first winter
- Gaps opening as the house dries out and settles
- New-build shower sealant that has already split
In and around The Chart, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
What your quote should include
- Who turns up on the day
- Whether VAT is included
- What preparation is included
- Which sealant they’ll use, and why
New build mastic in The Chart: local notes
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you’ve bought a new home near Hurst Green station, the sealant around baths, showers and frames is worth checking in the first year or two.
The Chart is about 6 miles south-east of Caterham, in Surrey. From the centre of The Chart to the outskirts, we cover new build mastic for every kind of property, from flats and houses to offices and hotels. The Chart is one of 395 places in Surrey we cover for new build mastic. There’s also a page for Crawley, about 14 miles away.
All of RH8 is covered for new build mastic, from the main roads to the quietest streets. That includes homes and businesses on Stoneleigh Road, St Andrews Way and Ridlands Lane. Neighbouring places we cover for new build mastic include Pains-Hill (1 mile west), Moorhouse Bank (1 mile north-east), Goodley Stock (1 mile east), Limpsfield (1 mile north-west) and Crockham Hill (1 mile south-east). Larger places within reach include Epsom (15 miles north-west), Horley (10 miles south-west), Redhill (9 miles west), Ewell (15 miles north-west), Reigate (10 miles west) and Caterham (6 miles north-west).
Landmarks near The Chart
Around The Chart, our work takes us to homes and buildings near Carpenters Arms, Oxted School and Hazelwood School, among other places. The nearest railway station is Hurst Green station, roughly 1.6 miles west. Other landmarks nearby include Tandridge Priory (0.6 miles north-west). Open spaces near The Chart include Botley Hill and Bay Pond.
Honest limits
We will not take on work that will not last, so here’s what sealant cannot put right:
- Leaks from pipes, valves or wastes, which need a plumber
- Structural cracks in walls or ceilings
- Broken tiles or a split tray
If you’re not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Kitchens
- Skirting & floors
- Bathrooms & en suites
- Show homes
- Plot handovers
- Windows & doors