Greater London · England
New Build Mastic in Cranford
New-build sealant joints in Cranford need attention? We cut out the old, prepare the joints and apply the right sealant.
- Plot mastic for developers ahead of handover
- Messy sealant that spoils new finishes
- Cracked sealant around new window and door frames
New build mastic in Cranford
A new build should have a neat, sound bead at every joint. When the finish is smeared, patchy or already cracking, it’s worth putting right early, before water reaches anything behind it. We work on skirting & floors, show homes and kitchens, and common reasons people get in touch are cracked caulk along new skirting and plot mastic for developers ahead of handover.
Shops, offices and commercial units across London have hard-wearing floors with movement joints that need resealing as they wear, while new homes need a neat, sound finish around frames, baths and kitchens before handover.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Cranford (TW4, TW5, UB3)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Honest limits
We’ll always be straight with you, so here’s what sealant can’t fix:
- A tray or bath that isn’t properly supported, until it’s fixed
- Settlement cracks that need a surveyor
- Leaking fittings rather than failed sealant
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think.
Surfaces we seal
- Skirting & floors
- Windows & doors
- Show homes
- Kitchens
- Plot handovers
- Bathrooms & en suites
Signs you need new build mastic in Cranford
New homes are full of moisture from plaster, screed and concrete, and it dries out over the first couple of years. As it does, timber shrinks and joints open, and sealant that can’t keep up splits.
It’s worth asking for a quote if you see:
- Cracked caulk along new skirting
- Sealant that never bonded to the surface
- Worktop and upstand sealant coming away
- New-build shower sealant that has already split
If you’ve bought a new home near Hayes & Harlington station, the sealant around baths, showers and frames is worth checking in the first year or two.
Before booking anyone
- Which sealant they’ll use, and why
- When the joint can take water or movement
- Whether you can choose the colour
- Who does the work, and how experienced they are
Why it’s worth doing now in Cranford
A quick bead over the top of the old sealant can look fine at first, but it cannot bond to what’s underneath. A lasting seal starts with removing the old one completely. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble for homes in Cranford.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Call for a quick quote and we’ll explain what it covers.
What you get with us
- We agree the colour with you first
- Tidy, careful work
- Arbo and Everbuild products
- An ARBOMaster approved applicator
See our cost guide and what customers say.
Also in Cranford
Different surfaces, different methods
Windows and doors
A draught at a new window can be a missed or failed joint. We check and reseal the frame edges.
Kitchens
New-kitchen sealant is often applied in a rush. We remove it and reseal with a kitchen-suitable sealant.
What affects the cost of new build mastic
There’s no set price list. What we look at:
- The product the joint needs
- When we can work, for business premises
- How many areas need sealing
- Any mould that needs treating
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 any work starts.
Helping us quote
Before you ask for a quote, have a think about:
- What’s wrong with the joints now
- The type of property
- How many joints, rooms or windows are involved
- Any access issues, like height or stairs
We don’t publish a price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or send us an email.
How the visit works
You do not need to clear the whole room or building, only the area right around the joints. We protect the rest, and the work takes anything from a few hours to several days, depending on the number of plots for a typical job. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Cranford. A visitor permit or a nearby bay makes the visit run more smoothly.
- 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 down to clean surfaces.
- We clean out the dust and grit left from the build.
- Primer goes on where the surface and product need it, then the new sealant.
- Each bead is tooled and the cure times explained.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Move anything stored near the joints
- Mention if the joints have been sealed before
Getting a quote
Getting a quote is simple: let us know what needs doing and where. A few photos by email make the job easier to understand, and we will take it from there.
Advice
Cranford questions
Can you do new build mastic in Cranford?
Yes, Cranford is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or drop us an email and let us know what needs doing.
Is parking a problem for a job in Cranford?
Parking in Cranford, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
How long should I leave it?
Cure times vary by product and the conditions. We tell you how long to leave it before we go.
Can you do plot mastic on a new development?
Yes. We take on second-fix sealant work across new plots. Good preparation keeps snagging to a minimum.
Do you work through snagging lists?
Yes. Send it with pictures and we will quote for the sealant items. Items that need a plumber, tiler or the builder are flagged.
Are you insured?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
Can new sealant go on top of the old bead?
No. We always remove the existing bead, the joint cleaned and primed where needed, and a new bead applied.
Should I try DIY first?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
What new build mastic looks like in Cranford
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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
As a London address, Cranford can be tricky for parking: let us know about parking bays, permits or a driveway.
Cranford is about 2 miles north of Feltham, in Greater London. If you need new build mastic in Cranford, it’s easy to get a quote: please call 0345 464 0079 or drop us an email. We cover Greater London from our Crawley base. Our Greater London coverage runs to 764 places, and Cranford is one of them. Our London page covers work nearby, about 14 miles away.
Our applicators cover all of TW4, TW5 and UB3 for new build mastic and the streets around it. That includes homes and businesses on Ely Road, Park Lane and The Avenue and the roads around them. If you are just outside Cranford, we cover Hatton (1 mile south-west), Harlington (1 mile north-west), Heathrow (2 miles west), Feltham (2 miles south) and Sipson (2 miles north-west). Further out, we also cover London (14 miles east), City of Westminster (11 miles east), Marylebone (12 miles east), Kensington (9 miles east), St Pancras (13 miles east) and Shoreditch (15 miles east).
Near you in Cranford
Typical jobs here are in homes near Cranford Community College, The Queen's Head pub and Hounslow Heath. The closest station to Cranford is Hayes & Harlington station, about 1.9 miles north of the centre. A little further out are Hounslow Hospital (1.6 miles east) and Treaty Centre (2 miles east). Green spaces nearby include Garden Lake and Northala Fields.
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Report sealant problems to your builder during the snagging period
- Record problems with dated pictures
- Check bath and shower seals every few months as the house settles
- Avoid running a DIY bead over the old one
Leave the sealant for the cure time we give you before showering or bathing. Most silicones need around a day before water reaches them.
A failed seal in a new home lets water into joists, plasterboard and ceilings. Catching it early keeps the fix to the sealant and the new finishes intact.