Buckinghamshire · England
New Build Mastic in Radnage
New build mastic in Radnage from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Kitchen sealant that has pulled off the wall
- Second-fix sealing on new plots
- Gaps opening as the house dries out and settles
New build mastic in Radnage, done properly
Our new-build work comes in two parts: plot mastic for developers, and putting right failed sealant for people who’ve bought a new home. Both get the same care over preparation since hurried prep is behind a lot of new-build failures. We work on skirting & floors, plot handovers and windows & doors, and common reasons people get in touch are shower seals failing in the first year or two and gaps opening as the house dries out and settles.
For a small place like Radnage, the journey and access are planned in advance, and the work itself is the same as on any site.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Place
- Radnage (HP14)
- Wider area
- Buckinghamshire
- Guarantee
- 12 months on all our work
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
The process
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for most snagging lists, longer for a run of plots, and the area is left clean. In a small place like Radnage, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each joint is checked for movement before work begins.
- We remove the failed sealant and clean the joints.
- Joints are dried and primed where the product calls for it.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- The finished joints are checked and the cure times given.
Before we arrive
- Clear the area around the work
- Mention any leaks or damp you’ve noticed
- Try not to wet indoor joints just before the visit
How to get a quote
Need a quote? Please call 0345 464 0079 or send us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
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Should I try it myself 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, and the work is guaranteed for a year.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Radnage: your questions answered
Can you help a landlord with a rental near Saunderton station?
Yes, we work for landlords and agents. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear quote.
Do you cover Radnage for new build mastic?
Yes, Radnage is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing, and we’ll give you a clear price.
Will it make a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Can new sealant go on top of the old bead?
No. We always remove the existing bead, the joint cleaned and primed where needed, and a new bead applied.
Are you fully insured?
Yes. We are fully insured, and we have been doing sealant work for more than 20 years.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Do you take out the old sealant first?
Yes, always, and completely. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
How much does new build mastic cost in Radnage?
Every job is different, so each one gets its own quote. To get one, ring 0345 464 0079 or email us with a short description of the job.
What affects the quote in Radnage
We do not publish a price list, because jobs vary so much. What we look at:
- Any working-time requirements on site
- Mould in or behind the old joints
- How many areas need sealing
- The product the joint needs
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first.
What we need to know
Before you ask for a quote, have a think about:
- The problem you’ve noticed
- Whether it’s a home or a business
- How we’d reach the joints
- Where the property is
Call for a quick quote, or email us if that’s easier. Tell us about the joints that need doing and we’ll talk you through the work and send you a clear quote.
Different surfaces, different methods
Kitchens
Worktops in new homes can move slightly as the house dries, which opens gaps along the back. A fresh flexible bead closes them.
Skirting and floors
Floors and skirting move as the house dries and the heating runs. We use a flexible product rather than caulk in a colour to suit.
Joints and finishes in Radnage homes
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 Saunderton station, the sealant around baths, showers and frames is worth checking in the first year or two. Around Radnage, as everywhere, new build mastic is only as good as the preparation behind it.
Radnage is about 6 miles north-west of High Wycombe, in Buckinghamshire. If you need new build mastic in Radnage, please phone 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Buckinghamshire. We cover 263 towns and villages across Buckinghamshire, large and small. You can also see our page for Reading, about 16 miles away.
All of HP14 is within our area for new build mastic, from the main roads to the quietest streets. If you need new build mastic at a property on Bottom Road, Bower's Lane and Bennett End Road or anywhere close by, our applicators can take on the job. If you’re just outside Radnage, we cover Bennett End (1 mile west), Bledlow Ridge (1 mile north-east), The City (1 mile south), Rout's Green (1 mile north) and Waterend (1 mile south-west). Larger places within reach include Aylesbury (10 miles north), High Wycombe (6 miles south-east), Chesham (11 miles east), Marlow (8 miles south-east), Amersham (11 miles east) and Beaconsfield (10 miles south-east).
What’s near Radnage
Around Radnage, our work takes us to homes and buildings near The Three Horseshoes Inn and the streets around them. For rail, the closest station is Saunderton station, about 1.6 miles east. Well-known places in the area include Wycombe Hospital (5.5 miles south-east). The countryside around Radnage includes Yoesden and Bald Hill.
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Why deal with it now?
It often makes sense to do all the sealant items on a snagging list together. It’s one visit, one quote and one set of cure times to plan around. Older cottages and farmhouses around Radnage can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Leaving a failed joint normally makes the job bigger, not smaller. If you are unsure, ring 0345 464 0079 or email us and we will give you an honest view and a quote.
Why Radnage clients choose us
- Anti-fungal silicone where joints get wet
- An ARBOMaster approved applicator
- White, clear, grey or coloured to suit, where the product allows
- We agree the colour with you first
Read our cost guide and what customers say.
What sealant work can’t fix
Before you book, it’s worth knowing the limits too:
- Plumbing faults behind the sealant
- Cracked trays, tiles or worktops
- Cracking that points to a structural problem
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
Where we work in Radnage
- Kitchens
- Bathrooms & en suites
- Plot handovers
- Skirting & floors
- Windows & doors
- Show homes