Surrey · England
New Build Mastic in Longcross
Problem with your new-build sealant joints in Longcross? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Gaps behind new kitchen upstands
- Internal frame sealant that has split
- Sealant applied over dusty or wet surfaces
How it works
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, do the work and tidy away. It generally takes anything from a few hours to several days, depending on the number of plots. Somewhere as small as Longcross, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We go through the snagging list or plot schedule and agree the joints to do.
- The old bead comes out in full, with no layer left behind.
- Surfaces are cleaned of building dust and primed where needed.
- A sealant chosen for each area goes in and is tooled smooth.
- We check every joint and tell you how long each needs to cure.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Let us know if you’ve seen damp or leaks
- Keep pets and children clear of the area while we work
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.
Read more
How we handle new build mastic in Longcross
A new house keeps drying out and settling for its first couple of years. Timber dries and shrinks, and baths and trays settle, and sealant applied in a hurry at handover can split. We are often asked to deal with new-build shower sealant that has already split and cracked sealant around new window and door frames, across bathrooms & en suites, windows & doors and show homes.
For a small place like Longcross, the journey and access are planned in advance, and the work itself is the same as on any site.
We stand behind the work with a one-year guarantee, so you’re covered after we have gone.
- Place
- Longcross (KT16)
- Region
- Surrey
- Cover
- One year on every job
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
New build mastic in Longcross: local notes
The South East is one of 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 Longcross station, the sealant around baths, showers and frames is worth checking in the first year or two.
Longcross is about 4 miles south-west of Egham, in Surrey. We carry out new build mastic for homeowners, landlords and businesses in Longcross and nearby, as part of our work across Surrey. Longcross is one of 395 towns and villages in Surrey where we work. Reading is on our list too, about 18 miles from Longcross.
Postcode districts we cover here for new build mastic: KT16. If you need new build mastic at a property on Longcross Road, Tanglewood Close and Albury Close or a nearby road, we can help. We also cover Trumps Green (1 mile north-east), Stonehill (1 mile south-east), Lyne (2 miles east), Mimbridge (3 miles south) and Ottershaw (3 miles south-east). We also work in nearby towns such as Guildford (9 miles south), Woking (4 miles south), Camberley (7 miles south-west), Epsom (14 miles east), Farnham (15 miles south-west) and Ewell (14 miles east).
Around Longcross
In Longcross, that means homes and buildings near Gracious Pond. Longcross’s nearest station is Longcross station, roughly 0.6 miles north-west of the centre. Nearby you’ll also find St. Peter's Hospital (2.6 miles east) and Chobham Museum (2.2 miles south). For a walk, there’s Virginia Water Lake and St Ann's Hill.
What affects the cost of new build mastic
Your quote is based on your job. We take into account:
- The number and length of the joints
- Access and height
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Ask us for a quote and we will go through it with you.
Helping us quote
What to tell us when you ask for a quote:
- The rough size of the job
- What the problem is, such as mould, gaps, leaks or cracking
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
Every job is quoted individually. Just phone 0345 464 0079 or drop us an email with the details, and photos are welcome.
Signs you need new build mastic in Longcross
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.
These are the problems we are asked about most:
- Messy sealant that spoils new finishes
- Gaps opening as the house dries out and settles
- Worktop and upstand sealant coming away
- Sealant that never bonded to the surface
Around Longcross, as everywhere, new build mastic is only as good as the preparation behind it.
What your quote should include
- How long to leave it before use
- Who turns up on the day
- Whether they’re fully insured
- What guarantee comes with the work
Why act early in Longcross
A tube of sealant from the DIY shop won’t fix the cause: dust, no primer and old sealant left in the joint. Cutting out, cleaning and priming are what make the difference. Where a wall is exposed, as many are in small places like Longcross, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Leaving a failed joint normally makes the job bigger, not smaller, because water and mould keep working on it. If you’re not sure whether it needs doing, phone 0345 464 0079 or email us for an honest opinion and a quote.
Why Longcross clients choose us
- A choice of colours where the product allows
- We agree the colour with you first
- Experience in homes, commercial sites and hotels
- 20+ years of sealant experience
See what affects the cost and what customers say.
Different surfaces, different methods
Skirting and floors
Floors and skirting move as the house dries and the heating runs. Caulk cracks; a flexible sealant moves with it in a colour to suit.
Plot handovers
We work through plots to your schedule, sealing each room ready for handover. Each joint is cleaned and primed where needed.
Questions from Longcross
Do you cover smaller places like Longcross?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you work for landlords with property near Longcross station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Will it make a mess?
No. The area is protected while we work and cleaned up afterwards.
Do you work through snagging lists?
Yes. Send it with photos and we will quote for the sealant items. Items that need a plumber, tiler or the builder are flagged.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint.
Who should fix failed sealant in a new build?
Report it to the builder first while you’re covered. Once that is done, or if they won’t put it right, we will cut it out and reseal it.
How long does the job take?
A typical job takes a few hours in a single home, including preparation and clearing up. We’ll confirm how long when we quote.
How much does new build mastic cost in Longcross?
Size, access and the old material all affect the cost. Call for a quick quote.
Landlords, agents and businesses in Longcross
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will quote.
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.
Aftercare tips
A little care helps the new joints last. Our advice:
- Check bath and shower seals every few months as the house settles
- Keep photos and emails about snagging items
- Do not seal over failed sealant yourself
- Use the extractor fan every time you shower
Keep photos of the joints and any snagging correspondence with your builder. It’s useful if you need to raise other issues later.
Mould takes hold quickly in sealant that has gaps or lifted edges. Resealing before mould gets in saves a harder job later.