Renfrewshire · Scotland
New Build Mastic in Renfrew
Professional new build mastic in and around Renfrew, with every bit of old sealant taken out first.
- New-build shower sealant that has already split
- Internal frame sealant that has split
- Gaps behind new kitchen upstands
What we do, step by step
All our tools and materials come with us in the van. Once we have agreed what’s being done, we protect the area and start. Most jobs take anything from a few hours to several days, depending on the number of plots. For a job in Renfrew, tell us where the work is, how to get in and where to park. Outside work depends on the weather, as sealant needs a dry surface.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- Failed or untidy sealant is cut out completely.
- We clean off dust from the build and prime the surfaces where the product needs it.
- We apply a sealant that suits each joint and tool it to a neat finish.
- Finally, each room is checked and you are given the cure time.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any water getting in
- Tell us about any previous sealing or DIY attempts
Get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that’s easy.
Related advice
New build mastic in Renfrew
Building dust is behind a lot of failed new-build sealant. Each joint is cleaned of dust and primed where the product calls for it, so the new bead bonds properly. We work on plot handovers, bathrooms & en suites and skirting & floors, and people most often call us about leaking shower tray seals in a new home and sealant that never bonded to the surface.
Commercial units and shops in a town like Renfrew have floors with joints that need resealing as they wear. Sealing them before the edges break up saves a bigger repair.
Your job is guaranteed for a year, as with all our work.
- Place
- Renfrew (PA4, G52, G51, PA3)
- Region
- Renfrewshire
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
FAQs for Renfrew
Is Renfrew in your area for new build mastic?
Yes. Our work covers the whole of Scotland, and Renfrew is part of that. You can drop us a line at info@mrmastic.co.uk and tell us what needs doing.
Can you help a landlord with a rental near Hillington West station?
Yes. We work for letting agents and landlords as well as homeowners. Just email us at info@mrmastic.co.uk with the address and what needs doing, and we will send you a clear quote.
Can new sealant go on top of the old bead?
No. New silicone will not bond to old silicone, so it soon lifts and traps water. The old sealant always comes out first.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Are you fully insured?
Yes, we’re fully insured for domestic and commercial work.
Who should fix failed sealant in a new build?
Your builder, if you’re still in their snagging or warranty period. After that, or if their repair keeps failing, we can do it.
Should I try DIY first?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Also near Renfrew
Other services in Renfrew
Why deal with it now?
A quick bead over the top of the old sealant can look fine at first, but it will not bond to the old layer. Taking it all out and starting again is the only way to get a lasting seal. Scottish weather finds any gap, and in a town like Renfrew, failed outside joints soon let damp into walls. Inside, a failed seal around a bath or shower lets water into floors and ceilings.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why us?
- Every job guaranteed for a year
- 180+ five-star Google reviews
- More than 20 years in sealant work
- Domestic, commercial and hotel work
Read what affects the cost and customer reviews.
Quotes for new build mastic in Renfrew
The quote reflects the job in front of us. We take into account:
- How many areas need sealing
- Working hours on commercial sites
- The old material and how stubborn it is
- Access and height
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please drop us a line at info@mrmastic.co.uk.
Helping us quote
When you call or email, it’s useful to know:
- The type of property
- Photos by email, if that is easy
- The rough size of the job
- Where the job is, and your postcode
Need a quote? Please email us at info@mrmastic.co.uk and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
What the job involves on each surface
Windows and doors
External mastic around new windows and doors is sometimes rushed or missed. It’s resealed with an exterior sealant suited to the frame and wall.
Show homes
In a show home, the sealant is on display. We lay neat, even beads in colours to suit the finishes.
New build mastic in Renfrew: local notes
Renfrew is in the west of Scotland, which is wetter than the east, which means plot mastic and the sealant in new homes has to cope with a lot of rain. Many new homes in Scotland are timber-framed, and as the frame dries and settles, skirting and sealant joints can open up.
Around Renfrew, as everywhere, new build mastic is only as good as the preparation behind it. For new homes near Hillington West station, it’s worth checking the sealant early, while snags are still fresh.
Renfrew is about 3 miles north-east of Paisley, in Renfrewshire. Every kind of property in Renfrew is covered for new build mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our Renfrewshire coverage runs to 21 places, and Renfrew is one of them.
Jobs for new build mastic in PA4, G52, G51 and PA3 is quoted and booked the same way as anywhere else. Whether your property is on High Street, Laymoor Square and Crofton Square or anywhere close by, our applicators can take on the job. With the A8 and A736 close by, Renfrew is easy for our applicators to reach for new build mastic. Nearby, we also carry out new build mastic in Shieldhall (1 mile south-east), Garscadden (1 mile north-east), Scotstounhill (1 mile north-east), Penilee (1 mile south-east) and Yoker (1 mile north). Larger places within reach include Paisley (3 miles south-west), Johnstone (6 miles south-west), Erskine (3 miles north-west), Bishopton (5 miles north-west), Glenburn (4 miles south-west) and Charleston (3 miles south-west).
Landmarks near Renfrew
Around Renfrew, our work takes us to homes and buildings near Robertson Park and Wheatsheaf Public House and the streets around them. Renfrew’s nearest station is Hillington West station, about 1.2 miles south-east. Other landmarks nearby include Renfrew Castle (0.5 miles north-east) and Renfrew Museum (0.5 miles north). Open spaces near Renfrew include Castle Hill and Kilmardinny.
When something else is needed
A few problems are outside what sealant work can do:
- Leaking fittings rather than failed sealant
- Disputes or warranty claims with your builder
- Movement caused by a poorly fitted tray or bath
If in doubt, send an email to info@mrmastic.co.uk and we will say what we think before you book.
Where we work in Renfrew
- Show homes
- Bathrooms & en suites
- Windows & doors
- Skirting & floors
- Kitchens
- Plot handovers
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Wipe joints with warm soapy water
- Report sealant problems to your builder during the snagging period
- Use the extractor fan every time you shower
- Keep pictures and emails about snagging items
Keep the bathroom ventilated, especially in the first year. Run the fan or open a window after bathing.
Don’t let the snagging period run out with sealant problems unreported. After that, putting it right may fall to you, so raise it early.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.