Hertfordshire · England
New Build Mastic in Hexton
New-build sealant joints in Hexton need attention? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Worktop and upstand sealant coming away
- Skirting joints opening in the first winter
- Cracked sealant around new window and door frames
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can be quoted together.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we are fully insured for the work.
New build mastic in Hexton, done properly
In a new home, every joint should have a clean, even bead. When the finish is smeared, patchy or already cracking, it’s worth putting right early, before water reaches anything behind it. We work on windows & doors, show homes and bathrooms & en suites, and the jobs we see most are sealant that never bonded to the surface and gaps between new skirting and floors.
Older homes in small places like Hexton often have timber floors that move with the seasons, so skirting and threshold joints need a flexible sealant rather than a rigid filler.
Our work is backed for twelve months, in Hexton and everywhere else we cover.
- Place
- Hexton (SG5)
- Region
- Hertfordshire
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Hexton
More services for Hexton
How it works
Before we leave, we go over the finished joints with you. The work normally takes a few hours for most snagging lists, longer for a run of plots, depending on the size of the job. Somewhere like Hexton needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at why each joint failed, including any movement.
- Old sealant is cut out and the joints cleaned.
- We make sure the joints are dry and prime them if needed.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- We check every joint and leave you with the cure times.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- Mention any sign-in or site rules at work premises
- Clear items away from the joints we are working on
Ask for a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.
Read more
Why deal with it now?
DIY kits don’t 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. Older cottages and farmhouses around Hexton can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, call 0345 464 0079 or send us an email for an honest opinion and a quote.
Why us?
- We leave the area clean and tidy
- Domestic, commercial and hotel work
- 180+ five-star Google reviews
- We’re fully insured
Take a look at what affects the cost and customer reviews.
What new build mastic looks like in Hexton
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Around Hexton, as everywhere, new build mastic is only as good as the preparation behind it.
Hexton is in Hertfordshire. Anywhere in SG5, we cover new build mastic for homes and businesses. Hexton is one of 381 towns and villages in Hertfordshire where we work for new build mastic. You can also see our page for London, about 34 miles away.
Postcode districts we cover here for new build mastic: SG5. We also cover the places around Hexton: Pegsdon (1 mile east), Apsley End (2 miles north-east), Hanscombe End (2 miles north), Shillington (3 miles north-east) and Pirton (3 miles east). Within a short drive, we also cover Hemel Hempstead (15 miles south), Stevenage (10 miles south-east), St Albans (15 miles south), Welwyn Garden City (14 miles south-east), Harpenden (10 miles south) and Hitchin (5 miles east).
Landmarks near Hexton
Locally, jobs take us to homes and businesses close to Recreation Ground and the streets around them. The nearest railway station is Harlington station, about 4.5 miles west of the centre. Other landmarks nearby include Ravensburgh Castle (0.9 miles south-west) and John Dony Field Centre (3.9 miles south). Green spaces nearby include Butts Hill and Barton Gravel Pit.
Honest limits
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Structural cracks in walls or ceilings
- Movement caused by a poorly fitted tray or bath
- Leaks from pipes, valves or wastes, which need a plumber
Not sure which it is? You can call 0345 464 0079 or drop us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Bathrooms & en suites
- Kitchens
- Plot handovers
- Show homes
- Windows & doors
- Skirting & floors
Should I try it myself first?
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. All the old material has to come out first.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
When to call us in Hexton
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:
- Kitchen sealant that has pulled off the wall
- Shower seals failing in the first year or two
- Internal frame sealant that has split
- Sealant applied over dusty or wet surfaces
If you’ve bought a new home near Harlington station, the sealant around baths, showers and frames is worth checking in the first year or two.
Questions to ask before you book
- Who does the work, and how experienced they are
- What happens if they find a problem under the old sealant
- Whether all the old sealant comes out first
- Which colour the sealant will be
How we quote for new build mastic
The price is agreed before any work begins. It’s based on:
- Whether there’s mould to deal with
- The number of rooms or windows
- The number and length of the joints
- How much old sealant there is and how hard it is to remove
Doing several joints on one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will send you a clear quote for the lot.
Asking for a quote
Before you ask for a quote, have a think about:
- Any previous sealing or DIY work
- The address or postcode of the job
- Whether it’s a home or a business
- Any access issues, like height or stairs
Want a quote for new build mastic? Please phone 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Your questions about new build mastic in Hexton
Do you cover Hexton for new build mastic?
Yes. Our work covers London and the South East, and Hexton is part of that. You can call 0345 464 0079 or drop us an email and let us know what needs doing.
Do you cover smaller places like Hexton?
Yes. Hexton is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Are you fully insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
Can you match the sealant colour to my new kitchen or bathroom?
White and clear are the most common, but other colours are available. We choose one to suit the room before we begin.
Where are you based?
Our base is Crawley. We work across South East England, London and Scotland.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is generally more efficient.
Will you just run a new bead over the existing one?
No. We always remove the existing bead, the joint cleaned and primed where needed, and a new bead applied.
Do you guarantee your work?
Yes. Each job is guaranteed for twelve months.