Greater London · England
South Ruislip New Build Mastic
New build mastic across South Ruislip and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Untidy sealant flagged on a snagging list
- Frame joints opening as the plaster dries
- Sealant work across a run of new homes
New build mastic in South Ruislip, done properly
Snagging sealant properly means taking the failed bead out completely. New silicone will not bond to old silicone, so it all comes out before we clean, dry and reseal. If you have gaps behind new kitchen upstands and gaps between new skirting and floors, we can put it right, on kitchens, skirting & floors and plot handovers alike.
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, in South Ruislip and beyond.
All of our work is guaranteed for twelve months, in South Ruislip and everywhere else we cover.
- Where
- South Ruislip (HA4, UB5, HA2)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY versus a professional finish
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Why act early in South Ruislip
Small cosmetic gaps can wait for the house to settle, but water getting through can’t. Not sure whether yours can wait? You can call 0345 464 0079 or send us an email with a few pictures and we’ll give you a straight answer. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in South Ruislip, the repair is bigger than a sealant job.
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
What you get with us
- Tidy, careful work
- Colour picked to suit the job
- You choose the colour before work begins
- An ARBOMaster approved applicator
Take a look at how sealant jobs are priced or customer reviews.
Surface by surface
Plot handovers
We work through plots to your schedule, sealing each room ready for handover. Joints are prepared properly before sealing to keep callbacks down.
Show homes
In a show home, the sealant is on display. We lay neat, even beads in colours to suit the finishes.
Joints and finishes in South Ruislip homes
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent.
If you’ve bought a new home near South Ruislip station, the sealant around baths, showers and frames is worth checking in the first year or two. As a London address, South Ruislip can be tricky for parking: let us know about parking bays, permits or a driveway.
South Ruislip is about 1 mile south-east of Ruislip, in Greater London. From the centre of South Ruislip to the outskirts, new build mastic is available for homes and businesses alike. Our Greater London coverage runs to 764 places, and South Ruislip is one of them. We also work in London, about 13 miles from South Ruislip.
Jobs for new build mastic in HA4, UB5 and HA2 works the same way as everywhere else we cover. We cover properties on Crown Road, Nairn Road and Palace Road and the roads around them. Other places close to South Ruislip include Northolt (1 mile south-east), Roxbourne (1 mile north), Rayners Lane (1 mile north-east), South Harrow (2 miles east) and Eastcote (2 miles north). Further out, we also cover London (13 miles east), City of Westminster (11 miles east), Marylebone (11 miles east), Kensington (9 miles south-east), St Pancras (12 miles east) and Shoreditch (14 miles east).
What’s near South Ruislip
Typical jobs here are in homes near Northala Fields, The Black Bull pub and Queensmead School and the streets around them. South Ruislip has its own railway station: South Ruislip station. A little further out are Clementine Churchill Hospital (2.7 miles east) and Heath Robinson Museum (2.4 miles north). Green spaces nearby include Middle Lake and Islip Manor Meadows.
Work for landlords, hotels and businesses
For anyone letting property in or around South Ruislip, several properties can be quoted together. Just tell us the addresses and what each one needs.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.
Keeping the joints in good condition
Looking after new joints is easy:
- Record problems with dated pictures
- Look at the sealant regularly in the first couple of years
- Use the extractor fan every time you shower
- Avoid running a DIY bead over the old one
Watch the joints as the house settles. Hairline gaps can open as timber and plaster dry, and they’re simple to reseal once movement has slowed.
Do not let the snagging period run out with sealant problems unreported. Once it ends, the repair may be down to you.
Places near South Ruislip
Other services in South Ruislip
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Your warranty claim itself, which is between you and the builder
- Plumbing faults behind the sealant
- Damaged fittings that need replacing
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think before you book.
Surfaces we seal
- Plot handovers
- Windows & doors
- Skirting & floors
- Bathrooms & en suites
- Kitchens
- Show homes
What happens on the day
Once we are on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours for most snagging lists, longer for a run of plots. In a London area like South Ruislip, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We go through the snagging list or plot schedule and agree the joints to do.
- We cut out every bit of the failed or messy sealant.
- Each joint is cleaned of dust and grit, then primed if required.
- A sealant chosen for each area goes in and is tooled smooth.
- Each area is checked and left with its cure time.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about earlier repairs to the joints
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
If you’re in South Ruislip and need new build mastic, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and you will get a clear quote before work begins.
Advice
South Ruislip questions
Is South Ruislip in your area for new build mastic?
Yes, South Ruislip is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear price.
I let a flat near South Ruislip station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Do you have insurance?
Yes. We are fully insured, and we can confirm the details when we quote.
Do you work through snagging lists?
Yes. Photos of each sealant item help us quote. Items that need a plumber, tiler or the builder are flagged.
Can I do it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Can I add another job to the visit?
Yes. Just list everything you need.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Do the sealants smell?
It depends on the product. Some smell for a while, some hardly at all.