Surrey · England
New Build Mastic in St John's
Problem with your new-build sealant joints in St John's? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Cracks appearing as a new home settles
- Kitchen sealant that has pulled off the wall
- Untidy sealant flagged on a snagging list
Honest limits
A few problems are outside what sealant work can do:
- Movement caused by a poorly fitted tray or bath
- Deciding who is responsible under a builder’s warranty
- Cracking that points to a structural problem
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think.
What we seal
- Show homes
- Plot handovers
- Bathrooms & en suites
- Windows & doors
- Skirting & floors
- Kitchens
New build mastic in St John's
A new house keeps drying out and settling for its first couple of years. Timber shrinks, plaster dries and baths and trays bed down, so sealant that was laid quickly before handover often cracks. We work on windows & doors, plot handovers and show homes, and people most often call us about cracked sealant around new window and door frames and cracks appearing as a new home settles.
In and around St John's, floors range from older timber boards to tiles and newer finishes, each moving in its own way. The sealant at skirtings and thresholds has to suit the floor it meets.
Your job is guaranteed for a year, as with all our work.
- Where
- St John's (GU21, GU22)
- Wider area
- Surrey
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Open a window or run the fan after bathing
- Report sealant problems to your builder during the snagging period
- Watch for new gaps as the house dries out
- Follow the cure time we give you
Wipe the sealant with warm soapy water. Avoid abrasive pads and strong solvents.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Early resealing keeps the job small and protects the rest of the house.
What the job involves on each surface
Kitchens
As a new house dries, worktops and walls shift a little, which opens gaps along the back. We reseal them with a flexible sealant.
Plot handovers
Send us the schedule and any sealant specification. We seal bathrooms, kitchens, frames and floors as agreed.
Landlords, agents and businesses in St John's
For anyone letting property in or around St John's, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
We work for landlords and letting agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
St John's: your questions answered
Do you cover smaller places like St John's?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
I let a flat near Woking station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear quote.
When is the best time to reseal in a new build?
Any seal that is leaking should be redone right away. For small cosmetic gaps, waiting until the house has settled can save doing them twice.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Can you quote for more than one area?
Yes. Just list everything you need and you’ll get one quote.
Do you use white or clear sealant?
We use white, clear or a colour to suit the finishes. Tell us what you’d like when you get a quote.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses and we’re fully insured.
Why does sealant fail so quickly in new builds?
It’s common, and there are normally two reasons: the house moving as it dries, and sealant that never bonded properly. A proper reseal deals with both.
Common problems we fix in St John's
Sealant is often one of the last jobs before handover. Joints aren’t always cleaned of dust or primed, and the sealant sits on grit instead of the surface.
The most common problems we see are:
- Smeared, uneven beads picked up at snagging
- Gaps behind new kitchen upstands
- Cracked sealant around new window and door frames
- Gaps opening as the house dries out and settles
For new homes near Woking station, it’s worth checking the sealant early, while snags are still fresh.
What to look for in a quote
- Whether VAT is included
- How long to leave it before use
- What happens if the job turns out different
- Whether all the old sealant comes out first
How the visit works
When we arrive, we look over the joints with you first. We protect the surfaces around the joints before any work begins. Most jobs take a few hours in a single home. A visit to St John's is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- Every bit of the old builder’s sealant is cut out.
- We clean out the dust and grit left from the build.
- We prime where needed and apply a sealant suited to each joint.
- We tool every joint neatly and tell you when each area can be used.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Let us know about earlier repairs to the joints
- Mention any leaks or damp you’ve noticed
Getting a quote
For a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
Read more
Places near St John's
What else we do in St John's
What affects the quote in St John's
You will get a clear quote before any work starts. It’s based on:
- Whether the work is at height
- Which sealant suits the joint
- How many rooms, windows or areas are involved
- Whether old sealant or filler has to be cut out
Doing several joints on one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. We’ll give you a clear price for the lot.
Asking for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- If someone has resealed it before
- The type of property
- Where the job is, and your postcode
- What’s wrong with the joints now
We do not publish a price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To arrange one, call 0345 464 0079 or drop us an email.
New homes and floors in St John's
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In and around St John's, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
St John's is about 1 mile west of Woking, in Surrey. Whether you are in the middle of St John's or further out, new build mastic is available for homes and businesses alike, from flats and houses to offices and hotels. 395 places in Surrey are on our list, large and small. We also work in Reading, about 19 miles from St John's.
We cover every part of the GU21 and GU22 postcode area for new build mastic. That includes homes and businesses on Pond Road, Copse Road and Raglan Road. With the A324 close by, St John's is easy for our applicators to reach for new build mastic. Nearby, we also carry out new build mastic in Goldsworth Park (1 mile north-east), Woking (1 mile east), Westfield (2 miles south-east), Horsell (2 miles north-east) and Mimbridge (2 miles north). Within a short drive, we also cover Guildford (5 miles south), Camberley (6 miles west), Epsom (14 miles east), Farnham (11 miles south-west), Ewell (15 miles east) and Egham (8 miles north).
Local landmarks in St John's
Typical jobs here are in homes near Hoe Valley School, The Oaktree School and Royal Oak pub and the streets around them. The closest station to St John's is Woking station, roughly 1.6 miles east of the centre. A little further out are Brookwood Hospital (1 mile west) and The Peacocks (1.6 miles east). Green spaces nearby include Brookwood Lye.