Chalk Farm construction mastic
Mastic packages for new-build and refurbishment projects throughout Chalk Farm and nearby, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Existing joints on a refurb that need cutting out and resealing
- Frame perimeters left unsealed or poorly sealed
- A long mastic snag list close to completion
Construction mastic near Chalk Farm
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
About our construction mastic in Chalk Farm
Perimeter sealing outside needs a dry joint and the right temperature. Cold or damp mornings, frost and condensation on frames can all hold external sealing up, so we plan elevations with the forecast and the programme in mind. Internal areas can normally carry on while the outside waits. Most enquiries involve early adhesion failures on new external joints and old sealant on a refurbishment that needs stripping before new work, across sanitary and kitchen joints, window and door perimeters and internal decorators’ caulk. Most enquiries from Chalk Farm 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.
Around Chalk Farm, 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.
Building owners and contractors get the same cover: a 12-month guarantee on our workmanship. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Location
- Chalk Farm (NW5, NW1, NW3)
- Wider area
- Greater London
- Cover
- A 12-month guarantee
- Quote
- Quoted before any work starts
- Call
- 01277 525 020
- Last updated
- 3 November 2026
After the work
Regular inspection catches problems early. Specifically:
- Plan external elevations with the weather in mind
- Put any product change through the designer first
- Ask installers to correct oversized gaps first
- Ask for joint and product checks before the package is urgent
The package carries our 12-month guarantee for workmanship. Damage by others isn’t a workmanship fault.
Frames with gaps too wide for sealant need sorting before the mastic goes on. Sealant stretched over an oversized gap won’t last so packing or adjustment by the installer comes first. We flag them as soon as we see them.
What affects the price in Chalk Farm
Quotes vary with the job. Expect it to depend on:
- Whether the work must be split into stages
- Backing rod, priming and other preparation
- Removal of failed or old sealant
- Travel to remote or island sites
Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
Sending details for a quote
However big the job, these details speed things up:
- What the building is and how it’s used
- Specification clauses that apply
- A wide shot and a close-up of the area
- The site address and postcode
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, give us a call on 01277 525 020 or email drawings and photos.
Questions about Chalk Farm
Can you cope with the access rules in a London building?
Yes. Inductions, permits and timed loading are routine for us in London. Send the building rules and access times with your enquiry. The ULEZ covers the whole of Greater London, which we allow for
Can you work at a site such as Regis Road Business Park, by Chalk Farm?
Yes. Estates, retail parks and business parks around Chalk Farm, Regis Road Business Park among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.
Can you work to our specification?
We use the product the specification names. Any suggested alternative is put to you before anything changes.
How many days will you need on site?
That varies with the scale of the job, but the work usually takes whatever the programme allows, since the work follows the trades as areas are released. For bigger or phased jobs, we will set out a timescale with the quote.
Do you seal on top of existing sealant?
No, never. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
Does weather matter for sealant work?
For external joints, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.
How do you work with the site programme?
Working to your programme, we seal each area as it’s handed over. The sequence is agreed with the site manager at the start.
Our process
Inspect, seal, sign off: that’s the shape of every visit. We inspect the joints and confirm what’s in scope, then the work is carried out to the specified product and detail, and we finish with a walk round so the work can be signed off. 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.
- First we take quantities off the drawings and read through the specification.
- A fixed quote sets out the scope, the products and the sequence.
- You tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we confirm it with the quote.
- We seal each plot or floor as it’s released to us.
- Every joint is prepared, set to depth and sealed with the specified product.
- We close out snagging and hand over with a 12-month guarantee.
Getting the site ready
- Let building users know which areas are affected
- Explain the parking and delivery arrangements
- Make sure the joints can be reached
Get a fixed quote
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, ring 01277 525 020 or email the details over.
Related advice
Surface by surface
Fire-rated sealant where specified
Fire-rated sealant is one type of fire-stopping product. Collars, wraps, batts and boards are specified for other services, and we will tell you if the detail calls for something else. Record requirements are agreed with the quote.
External facade and movement joints
Movement joints in the facade are sealed with a product suited to the expected movement. Depth is controlled with backing rod so the bead bonds to two sides only.
When it isn’t the sealant
Some faults sit outside our scope, and we point that out rather than sealing over them:
- Designing joint widths or choosing the specification (that sits with the designer)
- Joints damaged after sign-off by following trades
- Fire-stopping design or sign-off (that’s for the designer, fire engineer and building control)
If you’re not sure, just call the office on 01277 525 020 or email drawings and photos and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Internal decorators’ caulk
- Floor and skirting junctions
- Cladding and panel joints
- Sanitary and kitchen joints
- Brick and block movement joints
- Window and door perimeters
General trades versus a specialist
What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.
There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.
Contractors’ notes for Chalk Farm
Plenty of hotels sit less than 2 miles from Chalk Farm. When hotels extend or refit, the work is normally squeezed between peak periods, mastic included. Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Chalk Farm. Add booked deliveries and tight storage, and the mastic package needs planning with the site team.
Extensions at sites like Royal Free Hospital, 0.9 miles to the north-west of Chalk Farm, usually sit beside working departments, and the mastic follows strict access rules. Hotel extensions and refits, at places such as Camden Lock Hotel, less than half a mile north-west of Chalk Farm, usually run between busy periods, so the sealing is squeezed into short windows. For contractors refurbishing units at places like Regis Road Business Park (0.6 miles north-east of Chalk Farm), the mastic covers cladding panels, roller-door and window perimeters.
Chalk Farm is about 1 mile south-east of Hampstead, in Greater London. Across the NW5 postcode area, it works the same way: details in, fixed quote out, then sealing and a 12-month guarantee. Across Greater London, 764 places are covered, Chalk Farm among them.
Business premises anywhere in NW5, NW1 and NW3 are within our area for mastic packages. We cover commercial and managed buildings on Eton Road, Oval Road and Regal Lane and the roads nearby. Being close to the A5205, Chalk Farm is easy to get to with materials and equipment. Sites close to Chalk Farm are covered too, including Kentish Town (1 mile east), Primrose Hill (1 mile south-west), Haverstock (1 mile west), Belsize Park (1 mile west) and Camden Town (1 mile south-east). A short drive away, we cover London (4 miles south-east), Kensington (4 miles south-west), Shoreditch (3 miles east), Walthamstow (6 miles north-east), Hoxton (3 miles east) and Whitechapel (4 miles south-east).
Around Chalk Farm
Recent enquiries here include premises near Primrose Hill, Cecil Sharp House and The Fiddlers Elbow Public House, among other places. Also close by are Holy Trinity and Saint Silas CofE Primary School (under half a mile east) and North Bridge House School (0.5 miles south-east). Chalk Farm has its own railway station: Kentish Town West station. Other landmarks nearby include Isokon Gallery (0.7 miles north-west) and O2 Centre (1.3 miles west). Green spaces nearby include Primrose Hill and The Long Water.