Broadfields Estate construction mastic
Construction mastic for Broadfields Estate, from a contractor working since 2005. Fully insured and CHAS accredited.
- Perimeter gaps outside the sealant’s range
- Snag items on joints that need redoing before handover
- Missed perimeter joints on a new elevation
Construction mastic in Broadfields Estate
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Construction mastic in Broadfields Estate
The specification and the programme set the job. If a product is named, that’s what goes in; any alternative we suggest is put to you before anything changes. Backing, primer and depth follow what the sealant maker sets out, so the joints perform as the designer intended. Site teams most often ask us about window and door perimeters that won’t pass inspection and oversized or tapered gaps around new frames, on brick and block movement joints, cladding and panel joints and window and door perimeters. Whoever orders the work in Broadfields Estate, the brief is usually the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
Around Broadfields Estate, as across London, much of the work is refurbishing existing buildings as well as building new ones. Replacement windows, recladding and fit-outs leave perimeter and facade joints to seal, often next to people still using the building, so tidy, well-planned work matters.
The 12-month guarantee covers our workmanship: the preparation, the sealing and the tooling. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Where
- Broadfields Estate (HA8, NW7)
- Region
- Greater London
- Guarantee
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Your questions answered
Can you work in a London building with booked loading and goods-lift slots?
Yes, most London buildings have access rules of some kind, and we plan around them. Send the building rules and access times with your enquiry.
Would you work within a site like Edgware Community Hospital?
Yes. Healthcare sites are among the places we work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
Does the weather affect the work?
It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so external work may be moved if conditions aren’t right. Internal work is far less affected.
What accreditations do you hold?
We’re CHAS accredited and a Constructionline member, with CSCS-carded applicators. We’re also fully insured, with five million pounds of public liability cover.
Is any job too small?
Single areas, one-off repairs and whole buildings are all quoted the same way: details, then a fixed price, then sealing, then a 12-month guarantee.
Is Broadfields Estate in your area?
Yes. We cover Broadfields Estate and the rest of Greater London. To discuss a job, call the office on 01277 525 020 or send photos by email.
Can fire-rated sealing at service penetrations be included?
Where it’s specified, yes. We will flag if the detail needs a different product.
What we can’t put right
A proper diagnosis includes knowing what sealant can’t do. We will tell you if the real problem is one of these:
- Frames fitted out of tolerance
- Faulty frames rather than failed sealant
- Damage to finishes by other trades after we’ve sealed
Not sure which it is? You can phone 01277 525 020 or send details through our quote form and we will tell you honestly before you book.
Surfaces we seal
- Window and door perimeters
- Cladding and panel joints
- Internal decorators’ caulk
- Sanitary and kitchen joints
- Brick and block movement joints
- Floor and skirting junctions
Places near Broadfields Estate
What else we do in Broadfields Estate
What sets the cost
Sealant work doesn’t have a standard rate, because every site is different. What we look at:
- Whether the work must be split into stages
- Whether old sealant has to be cut out first
- Site requirements such as inductions and permits
- The size and state of each joint
The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a fixed quote and we’ll explain how it’s made up.
Sending details for a quote
A good diagnosis starts with the right details. Let us know:
- What the building is and how it’s used
- Where the site is, with the postcode
- Whether an asbestos survey exists
- Your programme or deadline
Send us photographs, drawings or a joint schedule and a fixed quote comes back to you. Where a site visit makes more sense, we will arrange one.
How the job changes by surface
Internal decorators’ caulk
Where the specification calls for it, acrylic decorators’ caulk goes on non-moving internal gaps before painting. It’s paintable and suits gaps that don’t move.
Bathrooms, en suites and washrooms
On multi-unit schemes, consistency matters across hundreds of bathrooms. A single team keeps the standard consistent, plot by plot or floor by floor.
Leave it or put it right?
Getting the mastic contractor involved early pays off. Early involvement means gaps, products and access are sorted before the programme bites. Leave it late and they turn up on the snag list. Failed sealant in a building in Broadfields Estate can quickly affect neighbours, tenants or the floor below. Putting it right early is less disruptive than dealing with the consequences.
The specified product makes a difference, as does the preparation each joint needs. Access, phasing and site rules also count.
Why clients in Broadfields Estate choose us
- Matching to RAL references, product permitting
- Workmanship guaranteed for 12 months
- CHAS accredited contractor
- Fully insured, including public liability cover
Read how commercial sealant jobs are priced or our accreditations and insurance.
Sites and facades in and around Broadfields Estate
Site traffic in Broadfields Estate falls within London’s ULEZ, like everywhere else in Greater London. Delivery slots and scarce storage shape how and when the mastic goes in. A 2-mile radius around Broadfields Estate takes in several hotels. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.
Hotels like Railway Hotel (1.1 miles south of Broadfields Estate) rarely close for long, so refurbishment mastic is phased floor by floor. On a healthcare site such as Edgware Community Hospital, which lies south of Broadfields Estate, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully. When units on a site such as Mill Yard Industrial Estate, 1.6 miles south of Broadfields Estate, are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.
Broadfields Estate is about 1 mile north of Edgware, in Greater London. We cover commercial sites throughout Broadfields Estate, whether it’s a single job or part of a planned programme. Across Greater London, 764 places are covered, including Broadfields Estate. Our London page has more on work in that area (12 miles or so).
Business premises anywhere in HA8 and NW7 are within our area. We cover commercial and managed buildings on Clay Lane, Mowbray Road and Cranmer Road and the roads nearby. Close to Broadfields Estate, our area also takes 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). Further afield, our area takes in 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).
Local landmarks in Broadfields Estate
Around Broadfields Estate, our work takes us to commercial buildings near Edgwarebury Park, The Northgate School and London Academy. Broadfields Estate’s nearest station is Mill Hill Broadway station, roughly 1.4 miles south-east. Well-known places in the area include Royal National Orthopaedic Hospital (1.4 miles west) and Elstree and Borehamwood Museum (2 miles north). The countryside around Broadfields Estate includes Darland's Lake and Edgware Way Grassland.
Our process
We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. Then we strip out anything that has failed, prepare every joint and seal it. Planning a London job such as one in Broadfields Estate starts with access: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Give us the hours we can be on site and we’ll schedule to suit.
- First we take quantities off the drawings and read through the specification.
- A fixed quote sets out the scope, the products and the sequence.
- Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
- We seal each plot or floor as it’s released to us.
- Joints are cleaned, primed where the maker requires it, backed and sealed to the specification.
- Before handover, snags are dealt with and the package is signed off under our 12-month guarantee.
What we need from you
- Send asbestos survey details if the building is pre-2000
- Send your site hours and access windows
- Make sure the joints can be reached
Get a fixed quote
We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To ask for one, speak to us on 01277 525 020 or email drawings and photos.
Related advice
Aftercare for building managers
After handover, these steps help:
- Stick to the specified sealant rather than a generic substitute
- Don’t force external sealing on a damp or frosty day
- Don’t schedule sealing before decorators and flooring are done
- Keep finished joints away from paint, plaster and scrapers
At handover, keep the product details with the O&M information. Future maintenance is easier when the products are known and avoids guesswork when joints are renewed. We can confirm the handover information you need when we quote.
Sealing outside when the joint is damp or too cold leads to poor adhesion. Waiting for a dry joint and the right temperature is better than redoing work.