Greater London · England
New Build Mastic in Selhurst
New build mastic in Selhurst from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Sealant that never bonded to the surface
- Frame joints opening as the plaster dries
- Second-fix sealing on new plots
New build mastic in Selhurst
Developers send us the plot schedule and we work through it. We seal bathrooms, kitchens, windows, doors and skirting so plots are ready to hand over with a sealant suited to each area. We are often asked to deal with joints pulling apart as timber shrinks and smeared, uneven beads picked up at snagging, on bathrooms & en suites, plot handovers and skirting & floors.
Across London, commercial floors have movement joints that break down under heavy foot traffic, and new homes need their plot mastic finished properly before handover.
You are covered for a year from the day we finish. If anything isn’t right with it, phone 0345 464 0079 or email us.
- Where
- Selhurst (SE25, SE20, CR0)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What we are called out for in Selhurst
Sealant applied onto damp surfaces doesn’t bond well. Site programmes do not always leave time for joints to dry first.
People generally contact us when they notice something like this:
- Smeared, uneven beads picked up at snagging
- Gaps opening as the house dries out and settles
- Kitchen sealant that has pulled off the wall
- Plot mastic for developers ahead of handover
If you’ve bought a new home near Norwood Junction station, the sealant around baths, showers and frames is worth checking in the first year or two.
What to look for in a quote
- Are they insured?
- Whether the sealant suits the joint
- Which colour the sealant will be
- Whether all the old sealant comes out first
Joints and finishes in Selhurst homes
Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
As a London address, Selhurst can be tricky for parking: let us know about parking bays, permits or a driveway.
Selhurst is about 5 miles south-east of Stockwell, in Greater London. Jobs in Selhurst get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our Greater London coverage runs to 764 places, Selhurst among them. We also work in London, around 7 miles away.
All of SE25, SE20 and CR0 is within our area for new build mastic, from the main roads to the quietest streets. That includes homes and businesses on Park Road, Court Road and Dixon Road. With the A213 close by, Selhurst is easy for our applicators to reach. If you’re just outside Selhurst, we cover South Norwood (1 mile north), Woodside (1 mile south), Ashburton (1 mile south), Elmers End (1 mile east) and Addiscombe (1 mile south). Larger places within reach include London (7 miles north), City of Westminster (9 miles north-west), Marylebone (9 miles north), Kensington (9 miles north-west), St Pancras (9 miles north) and Shoreditch (9 miles north).
Landmarks near Selhurst
Around Selhurst, our work takes us to homes and buildings near Harris Academy South Norwood, South Norwood Recreation Ground and The Albion pub and the streets around them. Selhurst has its own railway station: Norwood Junction station. Nearby you will also find Croydon University Hospital (1.7 miles south-west) and Crystal Palace Museum (1.4 miles north). Open spaces near Selhurst include Duppas Hill and Dulwich Upper Wood.
What the job involves on each surface
Bathrooms and en suites
Trays and baths in new builds settle as they’re used. The joint is stripped back before the new bead goes in with baths filled first.
Plot handovers
We work through plots to your schedule, sealing each room ready for handover. Each joint is cleaned and primed where needed.
How to look after the new joints
A little care helps the new joints last. Our advice:
- Look at the sealant regularly in the first couple of years
- Photograph failed sealant before it’s redone
- Keep water off fresh sealant until it has cured
- Put sealant faults on your snagging list early
Follow the cure time we give you before the area gets wet. Silicone is normally left for about a day to cure enough for use.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Catching it early keeps the fix to the sealant and protects the rest of the house.
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Quotes for new build mastic in Selhurst
You will get a clear quote before we start. It’s based on:
- When we can work, for business premises
- How easy the joints are to reach
- How many rooms, windows or areas are involved
- The number and length of the joints
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- How many joints, rooms or windows are involved
- What’s wrong with the joints now
- Any previous sealing or DIY work
- Any access issues, like height or stairs
If you’re in Selhurst and need new build mastic, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before work begins.
Landlords, agents and businesses in Selhurst
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Letting agents and landlords in Selhurst can book us as well as householders. Sealant work between tenants keeps a property looking cared for.
What happens on the day
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and tidy away. Most jobs take a few hours for most snagging lists, longer for a run of plots. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Selhurst. It helps if you can point us to a visitor permit or a bay close to the door.
- Each joint is checked for movement before work begins.
- We remove the failed sealant and clean the joints.
- We make sure the joints are dry and prime them if needed.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- The finished joints are checked and the cure times given.
Getting ready for the visit
- Mention any tricky access
- Tell us about any previous sealing or DIY attempts
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
We do not publish a price list. Instead, we give you a clear quote for your job. To get started, ring 0345 464 0079 or email us.
Advice
Selhurst: your questions answered
Can parking be tricky for a visit in Selhurst?
Parking in Selhurst, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
I let a flat near Norwood Junction station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Is there a guarantee?
Yes. Each job is guaranteed for twelve months.
What does new build mastic cost?
Every job is different, so each one gets its own quote. For a quick quote, ring 0345 464 0079 or drop us an email and let us know what needs doing and where.
Do you take out the old sealant first?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Can you reseal over the builder’s sealant?
No. New silicone won’t bond to old silicone, so sealing over the top fails quickly. We cut the old bead out completely.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Do you come to Selhurst?
We do. Selhurst is part of the area we cover, and the service is the same as everywhere else.