West Sussex · England
New Build Mastic in Gay Street
New-build sealant joints in Gay Street need attention? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Messy sealant that spoils new finishes
- Cracked caulk along new skirting
- Cracked sealant around new window and door frames
Can I do it myself?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
About our new build mastic in Gay Street
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. Typical jobs include sealant that never bonded to the surface and worktop and upstand sealant coming away, across bathrooms & en suites, show homes and windows & doors.
Somewhere as small as Gay Street, new homes tend to be conversions, self-builds or a few houses rather than an estate. Every one needs its sealant and floor joints done properly, whatever the size of the site.
We stand behind the work with a 12-month guarantee.
- Place
- Gay Street (RH20)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Towns and villages near Gay Street
Also in Gay Street
New build mastic in Gay Street: 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.
Around Gay Street, as everywhere, new build mastic is only as good as the preparation behind it.
Gay Street is about 9 miles south-west of Horsham, in West Sussex. Homes, rented property, offices and hotels in Gay Street is covered for new build mastic. Every job comes with our one-year guarantee. Across West Sussex, we cover 371 places, Gay Street among them. There’s also a page for Crawley, roughly 15 miles from Gay Street.
Here we cover the RH20 postcode area for new build mastic. We also cover the places around Gay Street: North Heath (1 mile north-west), Nutbourne (1 mile south), Broomershill (1 mile south-west), West Chiltington (2 miles south) and Codmore Hill (2 miles west). Within a short drive, we also cover Crawley (15 miles north-east), Horsham (9 miles north-east), Worthing (11 miles south), Burgess Hill (15 miles east), Littlehampton (12 miles south) and Shoreham-by-Sea (13 miles south-east).
Landmarks near Gay Street
Gay Street’s nearest station is Pulborough station, roughly 2.7 miles south-west of the centre. Not far away are The Mens.
Leave it or put it right?
Resealing everything on a snagging list in one visit is usually simpler than chasing joints one at a time. You get one visit and one clear quote. Around Gay Street, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why Gay Street customers choose us
- Domestic, commercial and hotel work
- Any old sealant cut out fully, not covered over
- Sealant colour chosen to suit
- White, clear, grey or coloured to suit, where the product allows
See what affects the cost and what customers say.
When to call us in Gay Street
If plaster or screed was still damp when it was sealed, the bond suffers. Site programmes do not always leave time for joints to dry before the sealant goes on.
The problems people usually mention when they call include:
- Kitchen sealant that has pulled off the wall
- Gaps between new skirting and floors
- Cracks appearing as a new home settles
- Frame joints opening as the plaster dries
If you’ve bought a new home near Pulborough station, the sealant around baths, showers and frames is worth checking in the first year or two.
What to look for in a quote
- Which sealant they’ll use, and why
- How long to leave it before use
- How hidden problems are handled
- How long the guarantee is
Honest limits
It helps to know what we can’t do:
- Plumbing faults behind the sealant
- Movement caused by a poorly fitted tray or bath
- Structural cracks in walls or ceilings
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
Joints and surfaces we work on
- Windows & doors
- Kitchens
- Bathrooms & en suites
- Plot handovers
- Skirting & floors
- Show homes
Gay Street: your questions answered
I let a flat near Pulborough station. Can you help?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Do you cover Gay Street for new build mastic?
Yes. We work across London and the South East, and Gay Street is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing, and we’ll send you a clear quote.
Do you work through snagging lists?
Yes. Send us the sealant items on the list, with pictures if you can. We’ll flag anything that needs another trade.
What does new build mastic cost?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or email us and let us know what needs doing and where.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do you use white or clear sealant?
The colour is chosen to suit the tiles, worktop or frame. Let us know your preference when you ask for a quote.
Where are you based?
Mr Mastic is based in Crawley. We cover Gay Street and the rest of West Sussex, along with the rest of our area.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
What affects the cost of new build mastic
Your quote is based on your job. We take into account:
- Which sealant suits the joint
- Access and height
- The amount of work
- How much old sealant there is and how hard it is to remove
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Call for a quick quote and we’ll go through it with you.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- The problem you’ve noticed
- Photos by email, if that’s easy
- Where the job is, and your postcode
- If it’s domestic, commercial or a hotel
Every job is quoted individually, so the first step is telling us about yours. Simply call 0345 464 0079 or email us and describe the job.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Avoid scourers and strong chemicals on sealant
- Get a leaking seal dealt with right away
- Watch for new gaps as the house dries out
- Open a window or run the fan after bathing
Avoid standing on the rim of the bath or the edge of the tray in the first few weeks. Report any movement in a bath or tray.
Mould takes hold quickly in sealant that has gaps or lifted edges. Dealing with it before it goes black keeps the job straightforward.
What happens on the day
There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the work takes a few hours in a single home for a typical job. Somewhere as small as Gay Street, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each joint is checked for movement before we start.
- 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.
- We check every joint and leave you with the cure times.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
Ask for a quote
For a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before any work starts.