Buckinghamshire · England
New Build Mastic in Hedsor
New build mastic in Hedsor from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Beads laid onto grit and dust from the build
- Gaps behind new kitchen upstands
- Skirting joints opening in the first winter
What the job involves on each surface
Plot handovers
Good preparation at handover saves snagging later. Dust from the build is removed first and primer used where needed.
Show homes
In a show home, the sealant is on display. Every bead is neat and coloured to suit the room.
How we handle new build mastic in Hedsor
We work in new homes and on new-build sites across Hedsor. One shower or a whole phase of plots, the method doesn’t change: cut out, clean, prime where needed and reseal neatly. Common call-outs are for plot mastic for developers ahead of handover and gaps behind new kitchen upstands, on plot handovers, show homes and windows & doors.
Somewhere as small as Hedsor, new homes tend to be conversions, self-builds or a few houses rather than an estate. Each still needs its sealant and floor joints finished properly.
All of our work is guaranteed for twelve months.
- Place
- Hedsor (HP10, SL8)
- Region
- Buckinghamshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Common problems we fix in Hedsor
On many sites, sealant goes on in the final rush before handover. Dusty, unprimed joints are common, and the sealant sits on grit instead of the surface.
The problems people generally mention when they call include:
- Cracks appearing as a new home settles
- Kitchen sealant that has pulled off the wall
- Sealant that never bonded to the surface
- Frame joints opening as the plaster dries
Around Hedsor, as everywhere, new build mastic is only as good as the preparation behind it.
Comparing quotes
- Which sealant they’ll use, and why
- What the quote includes, VAT included or not
- Which colour the sealant will be
- What insurance they hold
Quotes for new build mastic in Hedsor
For a quick quote, just ask. The main things that affect it are:
- Whether the work is at height
- The amount of work
- How much old sealant there is and how hard it is to remove
- How many areas need sealing
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
Asking for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- The type of property
- The rough size of the job
- The problem you’ve noticed
- Any access issues, like height or stairs
We quote each job on its own. Simply ring 0345 464 0079 or send us an email and describe the job and send pictures if you have them.
How it works
Most of a good job is in the preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours in a single home. In a small place like Hedsor, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- Failed or untidy sealant is cut out completely.
- We clean off dust from the build and prime the surfaces where the product needs it.
- A sealant chosen for each area goes in and is tooled smooth.
- Finally, each room is checked and you’re given the cure time.
How to prepare
- Tell us if parking is tricky
- Tell us about any previous sealing or DIY attempts
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
Need a quote? Please call 0345 464 0079 or send us an email with a few details. We will explain what we’d do and give you a clear price before work begins.
Related advice
What we cannot put right
Before booking, it’s worth knowing the limits:
- Leaking fittings rather than failed sealant
- Baths and trays that move too much for sealant to cope with
- Damaged fittings that need replacing
If you’re not sure, just phone 0345 464 0079 or drop us an email and we’ll give you a straight answer before booking.
Surfaces we seal
- Bathrooms & en suites
- Skirting & floors
- Kitchens
- Windows & doors
- Show homes
- Plot handovers
Should I try it myself first?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Your questions about new build mastic in Hedsor
Is Hedsor within the area you cover?
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 Hedsor for new build mastic?
Yes, Hedsor is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear price.
Where is Mr Mastic based?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Is there a guarantee?
Yes, for a year. If anything is not right with the work within the year, let us know and we’ll sort it.
Do you work for landlords and businesses?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels.
Will you just run a new bead over the existing one?
No. New silicone won’t bond to old silicone, so sealing over the top fails quickly. The old sealant always comes out first.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
New build mastic around Hedsor
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you’ve bought a new home near Bourne End station, the sealant around baths, showers and frames is worth checking in the first year or two.
Hedsor is about 3 miles south-west of Beaconsfield, in Buckinghamshire. Jobs in Hedsor get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our Buckinghamshire coverage runs to 263 places, Hedsor among them. You can also see our page for Reading, roughly 15 miles from Hedsor.
Postcode districts we cover here for new build mastic: HP10 and SL8. That includes homes and businesses on Kiln Fields, Kiln Lane and Broad Lane. Close by, we work in Wooburn (1 mile north), Berghers Hill (1 mile north-east), Wooburn Common (1 mile north-east), Wooburn Green (2 miles north) and Littleworth Corner (2 miles south-east). Within a short drive, we also cover High Wycombe (5 miles north-west), Chesham (10 miles north), Marlow (4 miles west), Amersham (8 miles north-east), Beaconsfield (3 miles north-east) and Chalfont St Peter (6 miles east).
Landmarks near Hedsor
We work in homes and buildings around Chequers Inn and Wye Valley School. Hedsor’s nearest station is Bourne End station, roughly 1 mile west of the centre. A little further out are High Wycombe Castle (4.7 miles north-west) and Marlow Community Hospital (3.6 miles west). For a walk, there’s Warren Nature Reserve and Taplow Lake.
Also near Hedsor
Also in Hedsor
Aftercare tips
No joint lasts for ever, but care makes a real difference. Our tips:
- Follow the cure time we give you
- Photograph failed sealant before it’s redone
- Check bath and shower seals every few months as the house settles
- Put sealant faults on your snagging list early
Keep an eye on the joints over the first couple of years. Small gaps can appear as the house dries.
A failed seal in a new home lets water into joists, plasterboard and ceilings. Early resealing keeps the job small and the new finishes intact.