Greater London · England
New Build Mastic in Edgware
We cover Edgware for plot mastic for developers and snagging failed sealant in new homes. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Leaking shower tray seals in a new home
- Sealant applied over dusty or wet surfaces
- Sealant work across a run of new homes
About our new build mastic in Edgware
Failed shower seals, gaps along the skirting and messy beads are common items on a new-home snagging list. If you are still within the builder’s snagging or warranty period, tell them first and if that stalls, we can do it. If you are dealing with plot mastic for developers ahead of handover and worktop and upstand sealant coming away, we can put it right, on show homes, windows & doors and plot handovers alike.
Much of London’s new housing is flats in larger developments. Snagging there often goes through the developer or managing agent, and failed shower seals, open skirting joints and gaps at thresholds are typical.
The work is covered for a year after we finish. If anything isn’t right with it, phone 0345 464 0079 or email us.
- Location
- Edgware (HA8, NW7, HA7)
- Region
- Greater London
- Cover
- 12 months on all our work
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
If you manage several properties in or around Edgware, several properties can go on one quote. Send us the addresses and the work at each, and pictures by email help.
When to call us in Edgware
Once people move in, baths and trays take weight and bed down. A bath sealed empty drops slightly when filled, straining the joint and the sealant may split.
Keep an eye out for these signs:
- Kitchen sealant that has pulled off the wall
- Frame joints opening as the plaster dries
- Sealant applied over dusty or wet surfaces
- Joints pulling apart as timber shrinks
For new homes near Mill Hill Broadway station, it’s worth checking the sealant early, while snags are still fresh.
What to look for in a quote
- What insurance they hold
- What the cure time is
- Which colour the sealant will be
- Who does the work, and how experienced they are
New build mastic in Edgware: local notes
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. Much of London’s new housing is flats in larger developments, where snags may need reporting through the developer or the managing agent.
Edgware is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Edgware is about 4 miles west of Finchley, in Greater London. Whether you are in the middle of Edgware or further out, new build mastic is available for homes and businesses alike. Edgware is one of 764 places in Greater London we cover. You can also see our page for London, about 11 miles away.
Jobs for new build mastic in HA8, NW7 and HA7 works the same way as everywhere else we cover. That includes homes and businesses on Station Road, Edgware Road High Street and Hillcrest Avenue and the roads around them. You will find Edgware on the A5100, so it’s easy for us to get to. Neighbouring places we cover for new build mastic include The Hale (1 mile east), Broadfields Estate (1 mile north), Burnt Oak (1 mile south-east), Canons Park (1 mile south-west) and Little Stanmore (1 mile south-west). We also work in nearby towns such as London (11 miles south-east), City of Westminster (9 miles south-east), Marylebone (9 miles south-east), Kensington (9 miles south), St Pancras (9 miles south-east) and Shoreditch (10 miles south-east).
Near you in Edgware
Locally, jobs take us to homes and businesses close to The Northgate School, Railway Hotel and London Academy. The nearest railway station is Mill Hill Broadway station, about 1.1 miles south-east of the centre. Well-known places in the area include Hilfield Castle (3.6 miles north-west) and Broadwalk Centre (0.5 miles south-west). For a walk, there’s Darland's Lake and Mill Hill Old Railway Nature Reserve.
How to look after the new joints
How long the joints last depends on use and care. Here’s what we suggest:
- Check bath and shower seals every few months as the house settles
- Avoid scourers and strong chemicals on sealant
- Avoid running a DIY bead over the old one
- Photograph failed sealant before it’s redone
Photograph failed sealant before it’s redone and keep the builder’s replies. It helps if anything else comes up during the warranty period.
If a shower tray or bath seal splits in the first year, look for movement. Getting it resealed properly, and any movement checked, stops it recurring.
Nearby places to Edgware
Also in Edgware
Why it’s worth doing now in Edgware
The builder is generally the first port of call while the snagging or warranty period runs. If it’s slow, or the same joint keeps failing, a proper reseal from a specialist is the next step. In London conversions, one flat’s bathroom is often above another flat’s ceiling, 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 Edgware.
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and agree the price before starting.
Why choose Mr Mastic in Edgware
- 180+ five-star Google reviews
- 20+ years of sealant experience
- Experience in homes, commercial sites and hotels
- An ARBOMaster approved applicator
Read what affects the cost and what customers say.
What affects the quote in Edgware
There’s no set price list, because jobs vary so much. The quote depends on:
- When we can work, for business premises
- The amount of work
- How many rooms, windows or areas are involved
- How easy the joints are to reach
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
What to tell us for a quote
When you call or email, these details help:
- Whether it’s a home or a business
- Pictures of the joints, sent by email
- The address or postcode of the job
- Any access issues, like height or stairs
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, ring 0345 464 0079 or send us an email.
Edgware: your questions answered
Is parking a problem for a job in Edgware?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
I let a flat near Mill Hill Broadway station. Can you help?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Can I send you my snagging list?
Yes. Snagging lists are a common starting point for us. We will go through the sealant items and agree what we will do.
Can new sealant go on top of the old bead?
No. Over-sealing traps mould and water and soon fails. All the old sealant comes out before we start.
How long will you be here?
A typical job takes a few hours for most snagging lists, longer for a run of plots, including the preparation. We will confirm how long when we quote.
Why does sealant fail so quickly in new builds?
New homes dry out and move in their first couple of years, and sealant is often applied quickly onto dusty surfaces. Either can make it fail early.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
What the job involves on each surface
Windows and doors
A draught at a new window can be a missed or failed joint. We check and reseal the frame edges.
Skirting and floors
Where the floor meets a bath panel or kitchen plinth, the joint keeps mop water out. They get a flexible, water-resistant sealant.
How it works
A visit follows a simple pattern: we look at the joints together, protect the area around them, carry out the job and clear up. It generally takes anything from a few hours to several days, depending on the number of plots. In a London area like Edgware, the main things to plan are parking and access: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- We look at why each joint failed, including any movement.
- 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.
- We check every joint and leave you with the cure times.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Mention any sign-in or site rules at work premises
- Let us know about earlier repairs to the joints
How to get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.