Greater London · England
New-build mastic & snagging in Catford, Greater London
Specialist new build mastic for Catford: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Sealant applied over dusty or wet surfaces
- Gaps opening as the house dries out and settles
- Sealant work across a run of new homes
Quotes for new build mastic in Catford
For a quick quote, just ask. What matters most is:
- The size of the job
- The type of sealant required
- The number of rooms or windows
- Whether old sealant or filler has to be cut out
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
What we need to know
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The type of property
- Any access issues, like height or stairs
- How many joints, rooms or windows are involved
- The problem you’ve noticed
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To arrange one, call 0345 464 0079 or drop us an email.
New build mastic for homes and businesses in Catford
Across Catford, we work for both new-home owners and the builders handing those homes over. One shower or a whole phase of plots, the method does not change: cut out, clean, prime where needed and reseal neatly. Typical jobs include kitchen sealant that has pulled off the wall and shower seals failing in the first year or two, across plot handovers, bathrooms & en suites and skirting & floors.
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 Catford as anywhere.
You’re covered for a year from the day we finish. If anything isn’t right with it, ring 0345 464 0079 or drop us an email.
- Where
- Catford (SE6, BR1)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Catford
What else we do in Catford
Aftercare tips
After the cure time, these simple habits help:
- Ventilate bathrooms well, especially in the first year
- Raise failed sealant with the developer while you’re covered
- Resist patching a failed seal with a tube from the DIY shop
- Get a leaking seal dealt with straight away
Photograph failed sealant before it’s redone and keep the builder’s replies. It’s useful if you need to raise other issues later.
A failed seal in a new home lets water into joists, plasterboard and ceilings. Early resealing keeps the job small.
When something else is needed
Before you book, it’s worth knowing the limits too:
- Baths and trays that move too much for sealant to cope with
- Damaged fittings that need replacing
- Leaking fittings rather than failed sealant
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think.
Surfaces we seal
- Show homes
- Kitchens
- Skirting & floors
- Bathrooms & en suites
- Windows & doors
- Plot handovers
New build mastic around Catford
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. Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent.
If you’ve bought a new home near Catford Bridge station, the sealant around baths, showers and frames is worth checking in the first year or two.
Catford is about 5 miles east of Streatham, in Greater London. Jobs in Catford get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Greater London, we cover 764 places, Catford among them.
We work across the SE6 and BR1 postcode area for new build mastic and the streets around it. That includes homes and businesses on Bargery Road, Penerley Road and Inchmery Road and the roads around them. Neighbouring places we cover for new build mastic include Bellingham (1 mile south-west), Southend (1 mile south-west), Ladywell (1 mile north), Hither Green (1 mile north-east) and Bell Green (1 mile south-west). Within a short drive, we also cover London (5 miles north-west), City of Westminster (8 miles north-west), Marylebone (8 miles north-west), Kensington (9 miles north-west), St Pancras (7 miles north-west) and Shoreditch (6 miles north-west).
Local landmarks in Catford
Typical jobs here are in homes near The London & Rye pub, Trinity Church of England School and Forster Memorial Park, among other places. For rail, the closest station is Catford Bridge station, roughly 0.5 miles north-west of the centre. Nearby you will also find Greenwich Castle (2.6 miles north) and University Hospital Lewisham (0.8 miles north). The countryside around Catford includes Downham Woodland Walk and Knight's Hill.
Why deal with it now?
A hairline gap at a skirting can wait, but a leaking seal cannot. Not sure whether yours can wait? You can phone 0345 464 0079 or drop us an email with a few pictures. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Catford, the repair is bigger than a sealant job.
Leaving a failed joint normally makes the job bigger, not smaller. If you’re not sure whether it needs doing, ring 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
Why Catford clients choose us
- Over 20 years’ experience
- White, clear, grey or coloured to suit, where the product allows
- Quality sealants from Arbo and Everbuild
- We never seal over old sealant
Read our cost guide or what customers say.
Common questions in Catford
Can parking be tricky for a visit in Catford?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Can you do new build mastic in Catford?
Yes. We work across London and the South East, and Catford is part of that. You can phone 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll send you a clear quote.
When is the best time to reseal in a new build?
It depends on whether water is getting through. A leaking shower or bath seal should be redone right away, but cosmetic gaps can wait for movement to slow.
Can you match the sealant colour to my new kitchen or bathroom?
Most bathroom joints are white or clear, but sealant comes in other colours too. We match the colour to the finish.
Can new sealant go on top of the old bead?
No. Fresh silicone doesn’t stick to the old layer, so it soon lifts and traps water. We cut the old bead out completely.
Are you insured?
Yes. We’re fully insured.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
Surface by surface
Bathrooms and en suites
New-build bathrooms and en suites are where sealant fails most often. We cut out the failed bead, clean and prime, and reseal with anti-fungal sanitary silicone.
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.
What we do, step by step
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours for most snagging lists, longer for a run of plots. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- The old bead comes out in full, with no layer left behind.
- Each joint is cleaned of dust and grit, then primed if required.
- A sealant chosen for each area goes in and is tooled smooth.
- We check every joint and tell you how long each needs to cure.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Let us know about parking restrictions
- Let us know about stairs, lifts or work at height
How to get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved and give you a clear price.
Read more
Do you need new build mastic in Catford?
On many sites, sealant goes on in the final rush before handover. Joints are not always cleaned of dust or primed, and the sealant sits on grit instead of the surface.
The problems people normally mention when they call are:
- Kitchen sealant that has pulled off the wall
- Cracked sealant around new window and door frames
- Shower seals failing in the first year or two
- Sealant work across a run of new homes
As a London address, Catford can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
What your quote should include
- What the quote includes, VAT included or not
- How long the guarantee is
- What insurance they hold
- Whether they seal over old material or remove it