Construction and new-build mastic in Falconwood, Greater London
Mastic packages for new-build and refurbishment projects across Falconwood, by CSCS-carded applicators. CHAS accredited and fully insured.
- Sealant knocked or painted over by other trades
- Failed sealant in an existing building being refurbished
- Caulk cracking where joints are moving more than expected
Need construction mastic in Falconwood?
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
When something else is needed
We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:
- Designing joint widths or choosing the specification (that sits with the designer)
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
- Oversized gaps that need packing or adjustment by others
Not sure which it is? You can call the office on 01277 525 020 or email the details over and we will tell you honestly.
Surfaces we seal
- Brick and block movement joints
- Internal decorators’ caulk
- Sanitary and kitchen joints
- Cladding and panel joints
- Window and door perimeters
- Floor and skirting junctions
Construction mastic for commercial buildings in Falconwood
Mastic Doctor has been a subcontractor on construction projects for over 20 years. We price from drawings and the specification, agree the sequence with the site team and seal as areas are released. For construction mastic on a scheme in Falconwood, send drawings through our quote form, or phone or email us to talk it through. We work on floor and skirting junctions, internal decorators’ caulk and brick and block movement joints, and the failures we’re asked to look at most are window and door perimeters that won’t pass inspection and new external sealant already peeling away. Most enquiries from Falconwood start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
The ULEZ covers the whole of Greater London, so contractors’ vehicles on a job in Falconwood must meet its standards or pay the daily charge. Alongside that, sites normally need booked deliveries and a plan for where materials go.
Every job we finish is backed by a 12-month workmanship guarantee, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Place
- Falconwood (DA16, DA15, SE9)
- Region
- Greater London
- Guarantee
- 12 months on every job
- Quotes
- Quoted before any work starts
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Work for main contractors and building owners
Building owners and managing agents use us on everything from one building to a spread of sites. One quote can cover more than one site, which keeps the paperwork simple.
We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Falconwood can sit alongside others in a wider programme.
Quoting for work in Falconwood
The price varies from site to site. It mainly depends on:
- Backing rod, priming and other preparation
- Phasing around occupants
- Specialist products, such as fire-rated or hygienic sealants
- Quantities, in metres or numbers
We don’t publish prices, since every building and every scope is different. Call for a quote.
What to include in your enquiry
Good information means a firmer quote. Helpful details to send:
- Any specification or named product
- When you need the work done
- The asbestos register, for older buildings
- Drawings or a marked-up plan, if available
A handful of photos and a postcode is the fastest way to a quote. Send them through the quote form, or phone 01277 525 020 or send details through our quote form if you’d rather talk the job through.
On site: what to expect
Before we leave any area, we remove the tape, clean down and inspect every joint. If an area should be left alone while the sealant cures, we say how long and put signs out. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. Let us know about any on-site parking or loading arrangements when you send the job details.
- Drawings, specification and programme come to us.
- We take off quantities and return a fixed quote.
- The sequence is agreed with the site manager.
- Each area is sealed when it’s released.
- Joints are prepared, backed and sealed to the specification.
- Snags are cleared and the package signed off with our 12-month guarantee.
Before we start on site
- For older buildings, check the asbestos register before work
- Warn occupants and staff about the work
- Flag any permit to work we’ll need
Request a quote
For a fixed quote, give us a call on 01277 525 020 or email the details over. You can also send details through our quote form.
Advice
Building and refurbishing in Falconwood
Site traffic in Falconwood falls within London’s ULEZ, like everywhere else in Greater London. Delivery slots and scarce storage shape how and when the mastic goes in. Falconwood has a number of hotels close by, all within 2 miles. When hotels extend or refit, the work is typically squeezed between peak periods, mastic included.
Projects at colleges like Rose Bruford College (to the south of Falconwood) tend to run to term dates, so the mastic is planned tightly. School extensions, at buildings such as Bishop Ridley Church of England VA Primary School, typically run to the summer holidays, mastic included. When units on a site such as Green Lane Business Park (2.2 miles south-west of Falconwood) are refurbished or reclad, the panel joints and window perimeters are part of the mastic package.
Falconwood is about 2 miles north-east of Eltham, in Greater London. Commercial clients in Falconwood use us for work on mastic packages. Falconwood is one of 764 places in Greater London on our list. There’s a separate page for London, about 9 miles away.
We cover the DA16, DA15 and SE9 postcode districts. Buildings on Hook Lane, Gordon Road and Kent Avenue are within our area. Nearby places we also cover include Blackfen (1 mile south), East Wickham (1 mile north), Avery Hill (1 mile south-west), Shooter's Hill (1 mile north-west) and New Eltham (2 miles south-west). Nearby towns on our patch include London (9 miles west), City of Westminster (11 miles west), Marylebone (11 miles west), Kensington (13 miles west), St Pancras (10 miles north-west) and Shoreditch (9 miles north-west).
Landmarks near Falconwood
In Falconwood, that means premises near The Plough and Harrow pub, Shoulder of Mutton Green and Harris Academy Falconwood. The nearest railway station is Welling station, roughly 0.5 miles north-east. Nearby you will also find Broadway Shopping Centre (2.2 miles east) and Memorial Hospital (1.4 miles north-west). Green spaces nearby include The Tarn and Summer Hill.
Places near Falconwood
Also in Falconwood
Common questions from Falconwood clients
Can you work on a hospital site such as Memorial 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.
Can you cope with the access rules in a London building?
Yes, we plan every London job around the building’s own access rules. Share the building’s contractor rules and we will work to them.
Do you install fire-rated sealant as part of a package?
Fire-rated sealant can be included where it’s specified, installed to the product’s tested detail. Fire-stopping design and sign-off sit with the designer and building control.
How long does a job like this take?
That varies with the scale of the job, though a typical visit usually takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes. Larger or phased jobs take longer, and we will give you a timescale with the quote.
What guarantee comes with a mastic package?
It carries a 12-month guarantee on our workmanship. We’re also fully insured for public liability.
What does a mastic package usually include?
Inside and out: frame perimeters, movement joints, caulk where called for, sanitary and kitchens.
How soon can the area be used again?
We will confirm how long the chosen product needs to cure, and flag anything to keep off until it has cured.
Site staff or a sealant specialist?
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Some joints are best left to specialists: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.
What happens if it’s left?
Refurbishments sometimes budget for new windows when the frames are sound and only the seal has failed. Sound frames often need only a new perimeter seal, which is a much smaller cost. If the frame is life-expired, we’ll tell you. In a London building, a failed joint rarely affects only one party. Putting it right early is less disruptive than dealing with the consequences.
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
What you get with us
- Our applicators hold CSCS cards
- Products installed to the manufacturer’s instructions
- Matching to RAL references, product permitting
- Standard and matched colours in many product ranges
Read our cost guide and how we’re accredited.