Buckinghamshire · England
Chartridge New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for householders, landlords and businesses in Chartridge. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Second-fix sealing on new plots
- Gaps behind new kitchen upstands
- New-build shower sealant that has already split
Landlord and commercial work in Chartridge
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
If you manage several properties in or around Chartridge, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and photos by email help.
New build mastic in Chartridge
Some owners wait for the first year’s movement before having joints redone. That makes sense for small gaps that are just cosmetic, but a failed shower or bath seal shouldn’t wait. We work on skirting & floors, kitchens and windows & doors, and common reasons people get in touch are gaps opening as the house dries out and settles and plot mastic for developers ahead of handover.
Around Chartridge, 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.
- Where
- Chartridge (HP5)
- Wider area
- Buckinghamshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Why deal with it now?
The builder is generally the first port of call while the snagging or warranty period runs. If it keeps failing or is not dealt with, we can reseal it properly. In a small place like Chartridge, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you’re unsure, phone 0345 464 0079 or email us for an honest opinion and a quote.
Why choose Mr Mastic in Chartridge
- Sanitary silicone with an anti-fungal additive in wet areas
- Experience in homes, commercial sites and hotels
- ARBOMaster approved applicator
- Trusted Arbo and Everbuild sealants
Take a look at our cost guide or what customers say.
How we quote for new build mastic
The price is agreed before any work begins. It’s based on:
- How much there is to do
- How much old sealant there is and how hard it is to remove
- Access and height
- The number of rooms or windows
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
Asking for a quote
Photos by email are helpful but not essential. Please mention:
- Any previous sealing or DIY work
- The rough size of the job
- If it’s domestic, commercial or a hotel
- Pictures of the joints, sent by email
Every job is quoted individually, so the first step is telling us about yours. Just ring 0345 464 0079 or drop us an email with the details and send photos if you have them.
Can I do it myself?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Your questions about new build mastic in Chartridge
Can you do new build mastic in Chartridge?
Yes. Our work covers London and the South East, and Chartridge is part of that. You can call 0345 464 0079 or email us and tell us what needs doing, and we will send you a clear quote.
I let a flat near Great Missenden station. Can you help?
Yes. We work for letting agents and landlords as well as householders. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Are you an approved applicator?
Yes. We’re an ARBOMaster approved applicator.
Does someone need to be in?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
Are you fully insured?
Yes. Mr Mastic is fully insured.
How long will you be here?
Typically it takes anything from a few hours to several days, depending on the number of plots. Larger jobs naturally take longer, and we will tell you how long to expect.
Can you match the sealant colour to my new kitchen or bathroom?
That depends on what the joint meets: white or clear in most bathrooms, and a colour to suit worktops, frames and floors elsewhere. We’ll agree it with you first.
Can you work on commercial sites?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
What happens on the day
When we arrive, we start by going over the job with you, so you know exactly what we are doing. Surfaces next to the work are protected before any work starts. Most jobs take a few hours for most snagging lists, longer for a run of plots. For a village or hamlet like Chartridge, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First we work through your snagging list or plot schedule with you.
- We cut out every bit of the failed or messy sealant.
- Each joint is cleaned of dust and grit, then primed if required.
- A sealant chosen for each area goes in and is tooled smooth.
- Each area is checked and left with its cure time.
How to prepare
- Mention any sign-in or site rules at work premises
- Tell us about any water getting in
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
We do not publish a price list. Instead, we send you a clear quote for your job. To arrange one, call 0345 464 0079 or email us.
Related advice
What new build mastic looks like in Chartridge
The South East is one of the drier parts of the UK, 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 Great Missenden station, the sealant around baths, showers and frames is worth checking in the first year or two. Around Chartridge, as everywhere, new build mastic is only as good as the preparation behind it.
Chartridge is about 2 miles north-west of Chesham, in Buckinghamshire. Chartridge gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our Buckinghamshire coverage runs to 263 places, and Chartridge is one of them. For nearby work, see our Reading page.
Our applicators cover all of the HP5 postcode area for new build mastic and the streets around it. Local streets include Chartridge Grange Drive and Cogdells Lane, and we cover them all. We also cover the places around Chartridge: Asheridge (1 mile north-east), Bellingdon (1 mile north), Hundridge (1 mile south), Ballinger Common (1 mile west) and Pond Park (1 mile east). Within a short drive, we also cover Aylesbury (10 miles north-west), High Wycombe (8 miles south-west), Marlow (12 miles south-west), Amersham (4 miles south-east), Beaconsfield (8 miles south) and Chalfont St Peter (9 miles south-east).
Local landmarks in Chartridge
Locally, jobs take us to homes and businesses close to Chiltern Hills Academy and The Bell pub. The nearest railway station is Great Missenden station, about 3.1 miles south-west. Nearby you’ll also find Roald Dahl Museum and Story Centre (3 miles south-west) and Hawridge Court (1.5 miles north-east). The countryside around Chartridge includes Pavis Wood and Sands Bank.
Towns and villages near Chartridge
More services for Chartridge
How to look after the new joints
Aftercare is simple:
- Watch for new gaps as the house dries out
- Ventilate bathrooms well, especially in the first year
- Photograph failed sealant before it’s redone
- Don’t wait for the house to settle if water is getting through
Leave the sealant for the cure time we give you before showering or bathing. Silicone is usually left for about a day before water reaches them.
Do not let the snagging period run out with sealant problems unreported. Once it ends, the repair may be down to you.
What the job involves on each surface
Show homes
We seal show-home bathrooms, kitchens and frames. Tell us when the home is open so we can plan around it.
Plot handovers
Developers can send the plot schedule and specification and we’ll quote. We seal bathrooms, kitchens, frames and floors to the agreed spec.