Mastic sealant contractors in Broadfields Estate
We carry out mastic sealing for building owners, managing agents and housing associations in Broadfields Estate. Send photos or drawings for a fixed quote.
- Leaks at window and door perimeters
- Occupiers reporting cold air round windows
- A mix of products and colours from past repairs
Mastic sealing for Broadfields Estate sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Diagnose, treat, sign off
Working in a building that stays open takes some planning. The work area is signed and kept contained, keep walkways clear and work section by section so the rest of the building stays in use. All of Greater London is in the ULEZ, and kerbside space in Broadfields Estate can be scarce. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- First we look at the mastic on each building and note what needs replacing.
- We send a fixed quote that sets out the joints, the products and the programme.
- The programme is fixed with you, including dates you can pass on to residents or tenants.
- Failed mastic is removed and the faces taken back to sound, dry material.
- Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
- Finished joints are looked over and the 12-month guarantee confirmed.
What we need from you
- Confirm the product named in the specification
- Let building users know which areas are affected
- Share the asbestos register for older buildings
Ask for a quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to give us a call on 01277 525 020 or send photos by email with what you know.
Related advice
Mastic sealing in Broadfields Estate, done properly
In buildings from before 2000, some old mastics contain asbestos. We check the asbestos register or survey before any old sealant is cut out, and work stops for testing if there’s any doubt. We don’t remove asbestos-containing materials. Most enquiries involve open joints in brickwork or panels and repeated reactive repairs to the same buildings, on balcony and threshold joints, external wall and movement joints and communal kitchens and washrooms. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Broadfields Estate, preparation and product choice get the time they need.
In a London area such as Broadfields Estate, many buildings are blocks of flats or mixed-use buildings run by managing agents, landlords or housing associations. Window and door perimeters, balcony joints and communal areas all have mastic that ages together across a building.
Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.
- Place
- Broadfields Estate (HA8, NW7)
- Wider area
- Greater London
- Cover
- 12 months on every job
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Maintenance after handover
After handover, a little attention goes a long way:
- Protect low-level joints in entrances
- Avoid piecemeal callouts where you can
- Check the asbestos register before any old mastic is disturbed
- Share your contractor requirements early
Ask residents or tenants to report draughts or leaks round windows early. Early reports catch failures before damage spreads.
Failed mastic often goes unnoticed until heavy rain finds it. Resealing when cracking first shows avoids water damage and saves internal repairs.
Mastic sealing around Broadfields Estate: what changes locally
For a London block, the agent or landlord typically handles notices to residents and access to flats. Our programme follows the access you agree with residents. Broadfields Estate has three care or nursing homes no more than 2 miles away. Care home owners need frame and external mastic kept sound without unsettling residents.
Landlords with units on estates such as Mill Yard Industrial Estate (to the south of Broadfields Estate) can bring frame, door and external mastic across several units into one programme. Owners of student blocks near Middlesex University, 2.5 miles south-east of Broadfields Estate, can schedule frame and external mastic for the summer vacation.
Broadfields Estate is about 1 mile north of Edgware, in Greater London. We cover Broadfields Estate, with the same fixed quotes and 12-month guarantee as everywhere else. Broadfields Estate is one of 764 places in Greater London on our list for mastic joints. Sites around London have their own page, about 12 miles away.
We take on mastic joints across the HA8 and NW7 postcode area, for business premises of every kind. Buildings on Clay Lane, Mowbray Road and Cranmer Road are within our area. Just outside Broadfields Estate, we also work in Edgware (1 mile south), Edgware Bury (1 mile north-west), The Hale (1 mile south-east), Deacon's Hill (1 mile north) and Burnt Oak (1 mile south-east). Bigger towns within reach include London (12 miles south-east), City of Westminster (9 miles south-east), Marylebone (9 miles south-east), Kensington (9 miles south), St Pancras (10 miles south-east) and Shoreditch (11 miles south-east).
Landmarks near Broadfields Estate
Around Broadfields Estate, our work takes us to commercial buildings near Edgwarebury Park, The Northgate School and London Academy. The nearest railway station is Mill Hill Broadway station, about 1.4 miles south-east. Other landmarks nearby include Royal National Orthopaedic Hospital (1.4 miles west) and Elstree and Borehamwood Museum (2 miles north). Not far away are Darland's Lake and Edgware Way Grassland.
Cost factors for mastic joints
Your fixed quote is built from the real scope. It allows for:
- Removal of failed or old sealant
- The total length or number of joints
- Any access equipment needed
- Working within restricted access windows
Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote, and you will have a fixed figure to work with.
What to include in your enquiry
To price the job accurately, we need a clear picture of the site. Send us:
- Any dates the work must fit around
- Approximate linear metres or a joint schedule
- Photos of the joints, close up and from further back
- Any specification or named product
Pricing a project or setting a maintenance budget? We will quote against your scope and drawings that you can work with. For a chat about it beforehand, call the office on 01277 525 020 or use the quote form.
Commercial clients in Broadfields Estate
Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, and each stage is agreed with your contact.
Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. Keys, access and contacts can be agreed in advance.
Questions about Broadfields Estate
Will you take on work at estates like Mill Yard Industrial Estate, close to Broadfields Estate?
Yes, sites like Mill Yard Industrial Estate are within our area, along with the rest of Broadfields Estate. To start, just call 01277 525 020 or send photos by email with the unit, the joints involved and your access times.
Do you work in London buildings with loading restrictions?
Yes. Booked loading bays, goods lifts and permit-to-work systems are normal for London jobs. Send the building rules and access times with your enquiry. All of Greater London is inside the ULEZ, and our planning allows for it
Can you quote from photos?
Many jobs can be quoted from photos, drawings or a joint schedule. If the job needs a look first, we’ll arrange a visit.
Is Broadfields Estate in your area?
Yes. Sites across Broadfields Estate are covered, with one number for every area we cover.
Is asbestos a concern with old mastic?
Asbestos removal isn’t part of our work. Anything suspect is tested before we carry on, and the duty to manage asbestos sits with the dutyholder.
Is it fine to apply new sealant on top of old?
No, never. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.
When is resealing likely to be due?
There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.
Towns and villages near Broadfields Estate
Also in Broadfields Estate
Why act early in Broadfields Estate
Open external joints let water into walls and around frames. Damp patches, stained plaster and decorating claims can follow, which is harder to deal with than resealing. In a London building, a failed joint rarely affects only one party: water travels through shared structures, and a small leak becomes a dispute between occupiers. Dealing with it early is simpler for everyone.
The specified product makes a difference, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site rules also count.
What you get with us
- Joints cleaned back to sound surfaces
- One contact handling all your sites
- Specification-led, product-correct work
- Commercial sealant work since 2005
Read how commercial sealant jobs are priced and how we’re accredited.
Signs you need mastic sealing in Broadfields Estate
Buildings move with temperature and moisture, and the sealant takes up that movement. If the joint or the product wasn’t suited to the movement, it splits and fails early.
Things that normally lead to an enquiry:
- Occupiers reporting cold air round windows
- Old repairs sealed over failed mastic
- Mastic failing across several blocks on an estate
- Communal area joints that look neglected
Blocks of flats and mixed-use buildings often cluster around stations such as Mill Hill Broadway station, 1.4 miles to the south-east of Broadfields Estate, and their window and balcony mastic tends to age at the same rate across a building.
What your quote should include
- Is the sealant right for the movement and the substrate?
- Whether primer will be used where the manufacturer specifies it
- How they handle RAMS and site documents
- Their plan for phasing and protecting the area