Buckinghamshire · England
New-build mastic & snagging in Lee Gate, Buckinghamshire
Professional new build mastic in and around Lee Gate, with old sealant always removed completely and a one-year guarantee.
- Joints pulling apart as timber shrinks
- Untidy sealant flagged on a snagging list
- Cracked sealant around new window and door frames
What the job involves on each surface
Windows and doors
A draught at a new window can be a missed or failed joint. We check and reseal the frame edges.
Kitchens
Beside the sink, the joint takes water every day. A kitchen sealant goes in there suited to the job.
How we handle new build mastic in Lee Gate
A new build should have a neat, sound bead at every joint. Smeared, patchy or cracked sealant is worth sorting early, before water reaches anything behind it. We’re often asked to deal with smeared, uneven beads picked up at snagging and cracked caulk along new skirting, on kitchens, windows & doors and skirting & floors.
In a village or hamlet like Lee Gate, 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.
All of our work is guaranteed for twelve months, in Lee Gate and everywhere else we cover.
- Location
- Lee Gate (HP16)
- Wider area
- Buckinghamshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When to call us in Lee Gate
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.
If you can see any of these, it’s time to have the joints looked at:
- Sealant that never bonded to the surface
- Internal frame sealant that has split
- Cracks appearing as a new home settles
- Leaking shower tray seals in a new home
In and around Lee Gate, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Questions to ask before booking
- Who does the work, and how experienced they are
- How the surfaces are prepared before sealing
- Whether you can choose the colour
- Whether they seal over old material or remove it
How we quote for new build mastic
The price is agreed before any work begins. It’s based on:
- How many rooms, windows or areas are involved
- Access and height
- Any mould that needs treating
- When we can work, for business premises
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
What we need to know
Photos help, but a description is a good start. Please mention:
- Any access issues, like height or stairs
- Pictures of the joints, sent by email
- Where the property is
- What’s wrong with the joints now
For new build mastic in Lee Gate, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Lee Gate: your questions answered
Is Lee Gate within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for landlords with property near Wendover station?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Can you reseal over the builder’s sealant?
No. New silicone won’t bond to old silicone, so it soon lifts and traps water. The old sealant always comes out first.
Are you an approved applicator?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Is it normal for sealant to crack in a new home?
New homes dry out and move in their first couple of years, and sealant is often applied quickly onto dusty surfaces. Either can make it fail early.
How long will you be here?
That depends on the amount of work, but most jobs take a few hours for most snagging lists, longer for a run of plots. We will give you a better idea when we quote.
Are you insured?
Yes. We are fully insured for every job we do.
DIY versus a professional finish
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Leave it or put it right?
DIY kits do not solve the main problems with new-build sealant: grit, unprimed surfaces and old layers underneath. Cutting out, cleaning and priming are what make the difference. Around Lee Gate, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Why choose Mr Mastic in Lee Gate
- 180+ five-star Google reviews
- Homes, businesses and hotels
- Anti-fungal silicone where joints get wet
- Old sealant always removed completely
See our cost guide or what customers say.
The process
There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the work takes a few hours in a single home in most cases. For a village or hamlet like Lee Gate, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- We cut out every bit of the failed or messy sealant.
- Each joint is cleaned of dust and grit, then primed if required.
- New sealant suited to each joint is applied and tooled neatly.
- Each area is checked and left with its cure time.
Preparing for the visit
- Tell us if parking is tricky
- On commercial sites, let us know about site rules
- Keep children and pets away from the work area
Getting a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or email us.
Read more
Aftercare tips
Aftercare is simple:
- Photograph failed sealant before it’s redone
- Watch for new gaps as the house dries out
- Wait for the cure time before using a resealed shower
- Raise failed sealant with the developer while you are covered
Do not stand on the bath edge or the lip of the tray while the sealant cures. Report any movement in a bath or tray.
A seal that splits early is often a sign of movement. Have it resealed, and the tray or bath checked, before it gets worse.
Also near Lee Gate
Other services in Lee Gate
New homes and floors in Lee Gate
The South East is one of the drier parts 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 Wendover station, the sealant around baths, showers and frames is worth checking in the first year or two.
Lee Gate is about 4 miles north-west of Chesham, in Buckinghamshire. Lee Gate gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Lee Gate is one of 263 places in Buckinghamshire where we work. You can also see our page for Reading, roughly 23 miles from Lee Gate.
Our applicators cover all of the HP16 postcode area for new build mastic. We cover properties on Furze Field Lane and Chesham Lane. If you’re just outside Lee Gate, we cover Kingsash (1 mile west), Hunt's Green (1 mile south), Wendover Dean (1 mile west), Wendover (2 miles north-west) and Great Missenden (3 miles south). We also work in nearby towns such as Aylesbury (7 miles north-west), High Wycombe (8 miles south), Chesham (4 miles south-east), Marlow (12 miles south), Amersham (6 miles south-east) and Beaconsfield (9 miles south).
Around Lee Gate
Locally, jobs take us to homes and businesses close to John Colet School and The Gate Public House. The closest station to Lee Gate is Wendover station, roughly 2.4 miles north-west. Nearby you’ll also find Trenchard Museum (2.6 miles north) and Hawridge Court (3.2 miles east). The countryside around Lee Gate includes Dancersend Nature Reserve and Haddington Hill.