Buckinghamshire · England
New-build mastic & snagging in Longwick, Buckinghamshire
Problem with your new-build sealant joints in Longwick? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Skirting joints opening in the first winter
- Sealant that never bonded to the surface
- Gaps opening as the house dries out and settles
New build mastic for homes and businesses in Longwick
Developers send us the plot schedule and we work through it. Bathrooms, en suites, kitchens, frames and skirting are sealed ready for handover using the right product for each joint. We work on windows & doors, show homes and plot handovers, and common reasons people get in touch are leaking shower tray seals in a new home and internal frame sealant that has split.
Where new homes go up in smaller places like Longwick, it’s often a small development or a single plot. The sealant around baths, showers, frames and skirtings needs to be right from the start.
A 12-month guarantee comes as standard.
- Location
- Longwick (HP27)
- Region
- Buckinghamshire
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
FAQs for Longwick
Will you come out to Longwick?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you cover Longwick for new build mastic?
Yes. Our work covers London and the South East, and Longwick is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear price.
Can you do several jobs on one visit?
Yes. Just list everything you need and you’ll get one quote.
Do you work for landlords and businesses?
Yes. We work in homes, commercial premises and hotels.
Can you work from my snagging list?
Yes. Snagging lists are a common starting point for us. We’ll go through the sealant items and agree what we’ll do.
Do you have insurance?
Yes. We’re fully insured, and we have been doing sealant work for more than 20 years.
What do you put in the joint?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
Should I wait before resealing?
That depends on the joint. A leaking shower or bath seal should be redone right away, but cosmetic gaps can wait for movement to slow.
What happens on the day
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for most snagging lists, longer for a run of plots. Parking around Longwick is generally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- We start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely 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.
- Each bead is tooled and the cure times explained.
How to prepare
- Let us know about stairs, lifts or work at height
- For business premises, tell us about site rules or sign-in
- Let us know if you’ve seen damp or leaks
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you’re ready, phone 0345 464 0079 or drop us an email.
Related advice
What we’re called out for in Longwick
The first winter with the heating on dries a new home quickly. Gaps open along skirting, frames and worktops and cracked sealant shows up.
Signs it’s time to call us include:
- Frame joints opening as the plaster dries
- Messy sealant that spoils new finishes
- Gaps opening as the house dries out and settles
- Beads laid onto grit and dust from the build
In and around Longwick, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
What to look for in a quote
- What the quote includes, VAT included or not
- What guarantee comes with the work
- Which colour the sealant will be
- How much experience the applicator has
What new build mastic looks like in Longwick
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.
For new homes near Monks Risborough station, it’s worth checking the sealant early, while snags are still fresh.
Longwick is about 5 miles east of Thame, in Buckinghamshire. From the centre of Longwick to the outskirts, new build mastic is available for homes and businesses alike. We cover 263 towns and villages across Buckinghamshire. Oxford is on our list too, about 16 miles from Longwick.
Work in HP27 works the same way as everywhere else we cover. You’ll find streets such as Headland End, Wickfields and Furrow Drive, and we cover them all. Neighbouring places we cover for new build mastic include Owlswick (1 mile north), Alscot (1 mile east), Pitch Green (1 mile south-west), Ilmer (1 mile north-west) and Horsenden (1 mile south). We also work in nearby towns such as Aylesbury (6 miles north), High Wycombe (9 miles south-east), Chesham (11 miles east), Marlow (12 miles south), Amersham (12 miles east) and Beaconsfield (13 miles south-east).
Local landmarks in Longwick
Locally, jobs take us to homes and businesses close to Princes Risborough School and The Red Lion Public House, among other places. Longwick’s nearest station is Monks Risborough station, roughly 1.3 miles east. Well-known places in the area include Great Kimble Dial Hill (2.4 miles east) and St John's Hospital (4.6 miles north). For a walk, there’s Brush Hill Local Nature Reserve and Beacon Hill.
Landlord and commercial work in Longwick
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.
Landlords and agents in Longwick can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
Places near Longwick
What else we do in Longwick
When something else is needed
New sealant can’t fix everything, and we’ll tell you before any work starts. Sealant will not put right:
- Structural cracks in walls or ceilings
- Broken tiles or a split tray
- A tray or bath that isn’t properly supported, until it’s fixed
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
What we seal
- Skirting & floors
- Show homes
- Kitchens
- Bathrooms & en suites
- Windows & doors
- Plot handovers
What the job involves on each surface
Show homes
Show homes need sealant that looks right from day one. Every bead is neat and coloured to suit the room.
Bathrooms and en suites
Trays and baths in new builds settle as they’re used. We reseal once the old bead is fully out.
What happens if it’s left?
A quick bead over the top of the old sealant can look fine at first, but it cannot bond to what’s underneath. Taking it all out and starting again is the only way to get a lasting seal. Homes in smaller places like Longwick 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.
Combining jobs into one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear quote for the lot.
Why Longwick customers choose us
- Every job guaranteed for a year
- Over 20 years’ experience
- Fully insured
- Approved under the ARBOMaster scheme
Take a look at our cost guide and customer reviews.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
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.