Wokingham · England
New Build Mastic in Crowthorne
New build mastic for Crowthorne and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Cracked caulk along new skirting
- Frame joints opening as the plaster dries
- Sealant work across a run of new homes
How we handle new build mastic in Crowthorne
For builders and developers, we work through plots to the schedule you give us. Bathrooms, en suites, kitchens, frames and skirting are sealed ready for handover using the right product for each joint. We’re often asked to deal with leaking shower tray seals in a new home and kitchen sealant that has pulled off the wall, across skirting & floors, plot handovers and show homes.
Shops and business units around Crowthorne have floors that see a lot of traffic. Threshold and floor joints are best resealed before their edges start breaking away.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Crowthorne (RG45, RG40)
- Wider area
- Wokingham
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
FAQs for Crowthorne
Is new build mastic in Crowthorne guaranteed?
All our work, in Crowthorne and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Is Crowthorne in your area for new build mastic?
Yes. We work across London and the South East, and Crowthorne is part of that. You can ring 0345 464 0079 or send us an email and let us know what needs doing.
Can I add another job to the visit?
Yes. More than one area can go on one quote.
Do you take on second-fix sealing for builders?
Yes. We work through plots to your schedule ready for handover. Tell us the plots and the joints involved and we will quote.
Is it worth resealing while the house is still settling?
Where water is getting through, don’t wait. Small gaps that are just cosmetic can be resealed once movement has slowed.
Do you use white or clear sealant?
The colour is chosen to suit the tiles, worktop or frame. Tell us what you’d like when you get a quote.
Is it normal for sealant to crack in a new home?
There are usually two causes: movement as the house dries and settles, and sealant laid onto dust without primer. Cutting it out and resealing properly fixes both.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Nearby places to Crowthorne
Other services in Crowthorne
What the job involves on each surface
Plot handovers
We work through plots to your schedule, sealing each room ready for handover. Joints are prepared properly before sealing so the sealant lasts.
Skirting and floors
Gaps under skirting are one of the most common new-build snags. A flexible sealant closes it without cracking like caulk.
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
When something else is needed
We will not take on work that won’t last, so these are the limits:
- Leaks from pipes, valves or wastes, which need a plumber
- Cracked trays, tiles or worktops
- A tray or bath that isn’t properly supported, until it’s fixed
If you are not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer.
What we seal
- Show homes
- Skirting & floors
- Plot handovers
- Kitchens
- Windows & doors
- Bathrooms & en suites
What affects the cost of new build mastic
Every job gets its own quote. This is what makes a difference:
- The product the joint needs
- How much old sealant there is and how hard it is to remove
- How easy the joints are to reach
- Mould in or behind the old joints
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins.
What we need to know
You do not need to know the technical terms. It helps if you can tell us:
- Roughly how big the job is
- What’s wrong with the joints now
- A few pictures by email, if you can
- Access, such as stairs, a lift or height
Want a quote for new build mastic? Please phone 0345 464 0079 or send us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
How the visit works
The work is kept neat and contained to the area we’re working on, so you can get on with your day. Expect the work to take anything from a few hours to several days, depending on the number of plots, and we tell you how long to leave it before we go. A visit in Crowthorne needs access to the work and a place to park close by. For outside work, let us know about side access, gates and any upper-floor joints.
- 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, with no layer left behind.
- Joints are vacuumed and cleaned of building dust.
- Primer goes on where the surface and product need it, then the new sealant.
- We tool every joint neatly and tell you when each area can be used.
How to prepare
- Mention any tricky access
- Move anything stored near the joints
- Plan for the work area to be out of bounds to pets and children
Getting a quote
If you are in Crowthorne and need new build mastic, ring 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
Related advice
Joints and finishes in Crowthorne homes
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In and around Crowthorne, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Crowthorne is about 3 miles south-west of Bracknell, in Wokingham. Whether you’re in the middle of Crowthorne or further out, new build mastic is available for homes and businesses alike. 35 places in Wokingham are on our list, large and small. You can also see our page for Reading, about 9 miles away.
Jobs for new build mastic in RG45 and RG40 is quoted and booked the same way as anywhere else. Whether your property is on Church Road East, Church Road West and High Street or a nearby road, we can help. Main roads around Crowthorne include the A321 and B3348, which makes travel easy. Neighbouring places we cover for new build mastic include Owlsmoor (1 mile south-east), Home Farm (1 mile north-east), Wooden Hill (2 miles north-east), Sandhurst (2 miles south) and Hanworth (2 miles north-east). Within a short drive, we also cover Reading (9 miles north-west), Wokingham (3 miles north-west), Woodley (7 miles north-west), Earley (7 miles north-west), Lower Earley (6 miles north-west) and Winnersh (5 miles north-west). As one of the bigger places in Wokingham, Crowthorne has every kind of property, from flats to offices.
Local landmarks in Crowthorne
Locally, jobs take us to homes and businesses close to King Edward VI Aston School, The Prince pub and Edgbarrow Woods, among other places. Crowthorne’s nearest station is Crowthorne station, about 1 mile south-west of the centre. A little further out are The Lexicon (3.7 miles north-east) and Pinewood Hospital (0.9 miles north). For a walk, there’s Wildmoor Heath and Heath Lake.
Signs you need new build mastic in Crowthorne
Not every new-build joint gets the right sealant: caulk where water collects, or a rigid product on a moving joint. Both fail early.
If you can see any of these, it’s time to have the joints looked at:
- Untidy sealant flagged on a snagging list
- Shower seals failing in the first year or two
- Beads laid onto grit and dust from the build
- Second-fix sealing on new plots
If you’ve bought a new home near Crowthorne station, the sealant around baths, showers and frames is worth checking in the first year or two.
What your quote should include
- The length of the guarantee
- Whether they seal over old material or remove it
- What preparation is included
- Whether you can choose the colour
Looking after it afterwards
Aftercare is simple:
- Don’t wait for the house to settle if water is getting through
- Resist patching a failed seal with a tube from the DIY shop
- Wipe joints with warm soapy water
- Use the extractor fan every time you shower
Clean the sealant with a mild detergent and a soft cloth. Keep scourers and harsh chemicals off it.
Mould takes hold quickly in sealant that has gaps or lifted edges. Resealing before mould gets in keeps the job straightforward.