Surrey · England
New-build mastic & snagging in Bentley, Surrey
Plot mastic for developers and snagging failed sealant in new homes in Bentley, with a 12-month guarantee on every job. Ask us for a quote.
- Internal frame sealant that has split
- New-build shower sealant that has already split
- Gaps behind new kitchen upstands
Your questions about new build mastic in Bentley
I let a flat near Bentley (Hampshire) station. Can you help?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Do you cover smaller places like Bentley?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
How long does the job take?
That depends on how much there is to do, but as a guide it takes anything from a few hours to several days, depending on the number of plots. We’ll give you a better idea when we quote.
My new home is still under warranty. Should I contact you?
Start with the builder if you are in the snagging or warranty period. Once that is done, or if they will not put it right, we can reseal it properly.
Where is Mr Mastic based?
Our base is in Crawley, and we work across South East England, London and Scotland.
Do you work for hotels and businesses?
Yes. We’ve worked for hotels, offices and other businesses and we are fully insured.
Will you just run a new bead over the existing one?
No. Over-sealing traps mould and water and soon fails. We remove every bit of the old bead before resealing.
How we handle new build mastic in Bentley
We carry out plot mastic and second-fix sealing for builders, and snagging reseals for new-home owners. In both, preparation makes the difference. If you have untidy sealant flagged on a snagging list and gaps between new skirting and floors, we can put it right.
For a small place like Bentley, the journey and access are planned in advance, and the work itself is the same as on any site.
Your job is guaranteed for a year, as with all our work.
- Where
- Bentley (GU10, GU34)
- Wider area
- Surrey
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Why deal with it now?
For developers, getting the sealant right first time saves return visits. Snagging visits for failed sealant cost time on every plot and most come down to preparation. Older cottages and farmhouses around Bentley can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
The cost depends on how much there is to do, how hard the old material is to remove and access to the work. You will have a clear quote before any work starts.
What you get with us
- 20+ years of sealant experience
- A choice of colours where the product allows
- Colour agreed with you before we start
- Sanitary silicone with an anti-fungal additive in wet areas
Nearby places to Bentley
Also in Bentley
What affects the cost of new build mastic
Every job gets its own quote. This is what makes a difference:
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
- The type of sealant required
- Access and height
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
Helping us quote
When you contact us, these details help:
- How many joints, rooms or windows are involved
- The address or postcode of the job
- The problem you’ve noticed
- Access, such as stairs, a lift or height
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or email us.
What the job involves on each surface
Show homes
Show homes need sealant that looks right from day one. Every bead is neat and coloured to suit the room.
Bathrooms and en suites
Trays and baths in new builds settle as they’re used. We reseal once the old bead is fully out with baths filled first.
Can I do it myself?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Aftercare tips
After the cure time, these simple habits help:
- Keep water off fresh sealant until it has cured
- Keep pictures and emails about snagging items
- Wipe joints with warm soapy water
- Report sealant problems to your builder during the snagging period
Photograph failed sealant before it’s redone and keep the builder’s replies. It helps if anything else comes up during the warranty period.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Small faults turn into leaks if left over time.
The process
We keep the work tidy and contained to the area we are working on. Expect the work to take anything from a few hours to several days, depending on the number of plots. For a village or hamlet like Bentley, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First we work through your snagging list or plot schedule with you.
- We cut out every bit of the failed or messy sealant.
- Surfaces are cleaned of building dust and primed where needed.
- We apply a sealant that suits each joint and tool it to a neat finish.
- We check every joint and tell you how long each needs to cure.
Before we arrive
- Keep children and pets away from the work area
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any water getting in
Getting a quote
Every job is quoted individually, so the first step is telling us about yours. Just ring 0345 464 0079 or email us with the details, and pictures are welcome.
Read more
New build mastic in Bentley: local notes
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.
For new homes near Bentley (Hampshire) station, it’s worth checking the sealant early, while snags are still fresh. In and around Bentley, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Bentley is about 4 miles west of Farnham, in Surrey. From the centre of Bentley to the outskirts, we cover new build mastic for every kind of property. Our area takes in 395 places across Surrey, large and small. For nearby work, see our Reading page.
Every address in GU10 and GU34 is within our area for new build mastic. That includes homes and businesses on Station Road, Broadlands Close and Eggars Field. We also cover Isington (1 mile south-west), Blacknest (1 mile south-east), Bucks Horn Oak (2 miles south-east), Holt Pound (2 miles east) and Binsted (2 miles south). Within a short drive, we also cover Guildford (14 miles east), Camberley (12 miles north-east), Farnham (4 miles east), Frimley (11 miles north-east), Haslemere (10 miles south-east) and Ash (8 miles north-east).
Landmarks near Bentley
We work in homes and buildings around The Star Inn, among other places. For rail, the closest station is Bentley (Hampshire) station, about 0.8 miles south-east. Well-known places in the area include Barley Pound (1.7 miles north-east) and Chase Community Hospital (5.9 miles south). Not far away are Farnham Park and Holybourne Hill.
Honest limits
We won’t take on work that won’t last, so these are the limits:
- Settlement cracks that need a surveyor
- Movement caused by a poorly fitted tray or bath
- Disputes or warranty claims with your builder
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before you book.
What we seal
- Kitchens
- Show homes
- Windows & doors
- Plot handovers
- Bathrooms & en suites
- Skirting & floors