Buckinghamshire · England
Great Kingshill New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for homeowners, landlords and businesses in Great Kingshill. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Beads laid onto grit and dust from the build
- Cracked caulk along new skirting
- Kitchen sealant that has pulled off the wall
For landlords and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
Housing providers, facilities teams and property managers book us too in Great Kingshill and across Buckinghamshire. Several sites can go on one quote, and we’re fully insured.
New build mastic in Great Kingshill, done properly
We carry out plot mastic and second-fix sealing for builders, and snagging reseals for new-home owners. Both get the same care over preparation. Common call-outs are for plot mastic for developers ahead of handover and gaps between new skirting and floors, on kitchens, windows & doors and bathrooms & en suites.
Around Great Kingshill, 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.
The work is covered for a year after we finish. If anything isn’t right with it, ring 0345 464 0079 or send us an email.
- Place
- Great Kingshill (HP15)
- Wider area
- Buckinghamshire
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What the job involves on each surface
Show homes
In a show home, the sealant is on display. Every bead is neat and coloured to suit the room.
Bathrooms and en suites
New-build bathrooms and en suites are where sealant fails most often. The old sealant comes out and anti-fungal sanitary silicone goes in after cleaning and priming.
Common problems we fix in Great Kingshill
If plaster or screed was still damp when it was sealed, the bond suffers. On a busy site, joints aren’t always given time to dry first.
Common reasons people contact us are:
- Internal frame sealant that has split
- Plot mastic for developers ahead of handover
- Gaps opening as the house dries out and settles
- New-build shower sealant that has already split
In and around Great Kingshill, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
What to look for in a quote
- Whether they’re fully insured
- Is the old sealant removed completely?
- Is VAT in the price?
- What happens if they find a problem under the old sealant
When something else is needed
We won’t take on work that will not last, so here’s what sealant cannot put right:
- Structural cracks in walls or ceilings
- Plumbing faults behind the sealant
- A tray or bath that is not properly supported, until it’s fixed
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think before booking.
What we seal
- Skirting & floors
- Plot handovers
- Kitchens
- Show homes
- Bathrooms & en suites
- Windows & doors
Why act early in Great Kingshill
Water getting past a failed seal in a new build reaches walls and floors that are still settling. Resealing promptly protects the new finishes around it. Around Great Kingshill, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
The cost depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
Why us?
- Quality sealants from Arbo and Everbuild
- Over 20 years’ experience
- Neat joints and a tidy finish
- An ARBOMaster approved applicator
Take a look at our cost guide and our reviews.
Also near Great Kingshill
Other services in Great Kingshill
How to look after the new joints
After the cure time, these simple habits help:
- Use the extractor fan every time you shower
- Follow the cure time we give you
- Check bath and shower seals every few months as the house settles
- Photograph failed sealant before it’s redone
Avoid standing on the rim of the bath or the edge of the tray in the first few weeks. Report any movement in a bath or tray.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Early resealing keeps the job small and protects the rest of the house.
FAQs for Great Kingshill
Do you work for landlords with property near Great Missenden station?
Yes. We work for landlords and agents as well as householders. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Can you do new build mastic in Great Kingshill?
Yes. Our work covers London and the South East, and Great Kingshill is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job, and we’ll send you a clear quote.
Are you fully insured?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
Can new sealant go on top of the old bead?
No. The old sealant is cut out fully, the joint cleaned and primed where needed, and a new bead applied.
Do you remove the old sealant?
Yes, every time. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Is the work guaranteed?
Yes. Each job is guaranteed for twelve months, wherever you are.
Do I need to be at home?
It depends on the job. Inside work needs someone to give us access.
Should I go to my builder first?
Start with your builder while their snagging or warranty period runs. If that does not work out, we are happy to quote.
New build mastic in Great Kingshill: local notes
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
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.
Great Kingshill is about 3 miles north of High Wycombe, in Buckinghamshire. Every kind of property in Great Kingshill is covered for new build mastic, old or new, large or small. Every job comes with our 12-month guarantee. Great Kingshill is one of 263 places in Buckinghamshire we cover. Our Reading page covers work nearby.
Postcode districts we cover here for new build mastic: HP15. New build mastic is available to properties on Stag Lane, Fairfields and Common Road and the roads around them. Close by, we work in Cryers Hill (1 mile south), Widmer End (1 mile south-east), Spurlands End (1 mile east), Hughenden Valley (1 mile south-west) and Stony Green (1 mile north-west). Further out, we also cover Aylesbury (11 miles north), High Wycombe (3 miles south), Chesham (6 miles north-east), Marlow (7 miles south), Amersham (5 miles east) and Beaconsfield (6 miles south-east).
Landmarks near Great Kingshill
Typical jobs here are in homes near Pipers Corner School, The Red Lion pub and Holmer Green Senior School. For rail, the closest station is Great Missenden station, about 2.1 miles north-east. Nearby you’ll also find Eden (3.3 miles south) and Great Missenden (2.3 miles north-east). Green spaces nearby include Prestwood Local Nature Reserve.
What we do, step by step
There’s no need to move everything out, only the area right around the joints. We protect the rest, and the work takes a few hours in a single home in most cases. Somewhere like Great Kingshill needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We go through the snagging list or plot schedule and agree the joints to do.
- The old bead comes out in full, with no layer left behind.
- Each joint is cleaned of dust and grit, then primed if required.
- We apply a sealant that suits each joint and tool it to a neat finish.
- We check every joint and tell you how long each needs to cure.
Before we arrive
- Mention any leaks or damp you’ve noticed
- Mention if the joints have been sealed before
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we will talk you through the work and give you a clear price.