Greater London · England
New Build Mastic in Old Coulsdon
New build mastic in Old Coulsdon from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Untidy sealant flagged on a snagging list
- Plot mastic for developers ahead of handover
- Cracks appearing as a new home settles
How we handle new build mastic in Old Coulsdon
We carry out plot mastic and second-fix sealing for builders, and snagging reseals for new-home owners. Both get the same care over preparation. If you have untidy sealant flagged on a snagging list and skirting joints opening in the first winter, we can put it right.
London homes range from new-build flats to period conversions with new floors laid over old boards. Wherever a floor meets a wall, a skirting or a threshold, the joint has to allow for movement, in Old Coulsdon as anywhere.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Old Coulsdon (CR5, CR3, CR8)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the quote in Old Coulsdon
The quote reflects the job in front of us. We take into account:
- Any working-time requirements on site
- Whether there’s mould to deal with
- The old material and how stubborn it is
- How easy the joints are to reach
Doing several joints on one visit is generally more efficient than separate visits. You’ll get one clear quote for the whole job.
Helping us quote
What to tell us when you ask for a quote:
- Where the property is
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
- The rough size of the job
For new build mastic in Old Coulsdon, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Work for landlords, hotels and businesses
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Housing providers, facilities teams and property managers book us too in Old Coulsdon and across Greater London. We can quote a run of properties together.
Your questions about new build mastic in Old Coulsdon
Do you work for landlords with property near Coulsdon South station?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Is parking an issue for new build mastic in Old Coulsdon?
Parking in Old Coulsdon, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
Can I send you my snagging list?
Yes. Send us the sealant items on the list, with pictures if you can and we’ll give you a quote. We’ll tell you if anything on it isn’t a sealant job.
How do I get a quote for new build mastic in Old Coulsdon?
Size, access and the old material all affect the cost. Call for a quick quote.
My new home is still under warranty. Should I contact you?
Your builder, if you are still in their snagging or warranty period. If that does not work out, we’re happy to quote with our 12-month guarantee.
Can you match the sealant colour to my new kitchen or bathroom?
Most bathroom joints are white or clear, but other colours are available. We choose one to suit the room before we begin.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
When something else is needed
A few problems are outside what sealant work can do:
- Movement caused by a poorly fitted tray or bath
- Cracked trays, tiles or worktops
- Leaks from pipes, valves or wastes, which need a plumber
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
What we seal
- Skirting & floors
- Kitchens
- Bathrooms & en suites
- Show homes
- Plot handovers
- Windows & doors
How it works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours in a single home, and the area is left clean. In Old Coulsdon, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- Each joint is checked for movement before work begins.
- Old sealant is cut out and the joints cleaned.
- Joints are dried and primed where the product calls for it.
- Baths are filled with water, then the new sealant is applied.
- The finished joints are checked and the cure times given.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Keep children and pets away from the work area
- Mention if the joints have been sealed before
Getting a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
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New build mastic in Old Coulsdon: local notes
Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For new homes near Coulsdon South station, it’s worth checking the sealant early, while snags are still fresh.
Old Coulsdon is about 1 mile south-east of Coulsdon, in Greater London. Across the CR5 area, we cover new build mastic for homes and businesses. Across Greater London, we cover 764 places, Old Coulsdon among them. For nearby work, see our London page, about 14 miles away.
Every address in CR5, CR3 and CR8 is covered for new build mastic. That includes homes and businesses on Ellis Road, Tollers Lane and Court Avenue. Neighbouring places we cover for new build mastic include Coulsdon (1 mile north-west), Chipstead (2 miles west), Purley (2 miles north), Woodcote (2 miles north-west) and Woodmansterne (3 miles west). Further out, we also cover London (14 miles north), City of Westminster (15 miles north), Marylebone (15 miles north), Kensington (14 miles north), Whitechapel (15 miles north) and Brompton (14 miles north).
Local landmarks in Old Coulsdon
In Old Coulsdon, that means homes and buildings near Sunnydown School, Dollypers Hill and The Tudor Rose pub and the streets around them. Old Coulsdon’s nearest station is Coulsdon South station, about 1.4 miles north-west. Other landmarks nearby include East Surrey Museum (2 miles south-east) and St Lawrence's Hospital (1.3 miles south-east). Not far away are Nore Hill and Mercers Lake.
Signs you need new build mastic in Old Coulsdon
The first winter with the heating on dries a new home quickly. Gaps open along skirting, frames and worktops and cracked sealant shows up.
Look out for any of the following:
- Cracked caulk along new skirting
- Sealant that never bonded to the surface
- Joints pulling apart as timber shrinks
- Messy sealant that spoils new finishes
Old Coulsdon is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
What to look for in a quote
- What the cure time is
- What guarantee comes with the work
- Whether they’re fully insured
- Whether they seal over old material or remove it
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 call for the right materials, safe access and experience.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
Towns and villages near Old Coulsdon
What else we do in Old Coulsdon
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. Our tips:
- Watch for new gaps as the house dries out
- Use the extractor fan every time you shower
- Put sealant faults on your snagging list early
- Wipe joints with warm soapy water
Keep the bathroom ventilated, especially in the first year. Use the extractor fan or open a window after showers to help keep mould away.
Mould takes hold quickly in sealant that has gaps or lifted edges. Dealing with it before it goes black saves a harder job later.