Hackney Marshes construction mastic
Mastic packages for new-build and refurbishment projects throughout Hackney Marshes and nearby, by CSCS-carded applicators. CHAS accredited and fully insured.
- Failed sealant in an existing building being refurbished
- Inconsistent sealant finishes from plot to plot
- Frame perimeters left unsealed or poorly sealed
Construction mastic for Hackney Marshes sites
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Construction mastic in Hackney Marshes, done properly
On refurbishments, the mastic package typically includes cutting out old sealant as well as sealing new work. Existing joints have to be stripped back to sound faces, because fresh sealant can’t key into cured silicone and the asbestos survey is checked first on older stock. New and existing joints then get the same preparation. The enquiries we see most involve existing joints on a refurb that need cutting out and resealing and cracks opening in caulked internal joints, on floor and skirting junctions, brick and block movement joints and internal decorators’ caulk. Searching for sealant specialists in Hackney Marshes? We’ve been sealing commercial buildings since 2005, with CSCS-carded applicators.
A great deal of London construction is refurbishment of occupied or part-occupied buildings, alongside new blocks. New frames, overcladding and fit-outs all end in perimeter and facade joints, frequently with occupants close by, so tidy, well-planned work matters.
Every job we finish is backed by a 12-month workmanship guarantee, in Hackney Marshes as everywhere else we work. If our installation lets you down in that time, we return and fix it.
- Where
- Hackney Marshes (E5, E10, E9)
- Region
- Greater London
- Cover
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Leave it or put it right?
On a refurbishment, there’s a choice between resealing existing frames and replacing them. Sound frames often need only a new perimeter seal and that’s a far smaller job. 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.
The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a fixed quote.
What you get with us
- Fully insured
- A range of standard colours, depending on the product
- Matching to RAL references, product permitting
- CHAS accredited contractor
See our cost guide or how we’re accredited.
Maintenance after handover
Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. Our advice:
- Brief the final clean team to avoid blades near sealant
- Get the mastic subcontractor involved early in the programme
- Don’t schedule sealing before decorators and flooring are done
- Note which sealant went where at handover
After we’ve sealed an area, it helps to keep other trades from damaging the joints. Fresh sealant needs its cure time before it’s cleaned, painted near or knocked, and that time depends on the product, temperature and joint depth.
Leaving the mastic snag list to the end squeezes everyone. Clearing snags area by area spreads the work out, and avoids a rush.
Site staff or a sealant specialist?
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
Building owners, agents and FMs in Hackney Marshes
If you look after buildings for someone else, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end.
As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.
Places near Hackney Marshes
What else we do in Hackney Marshes
Diagnose, treat, sign off
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 the job ends with a walk round and sign-off. All of Greater London is in the ULEZ, and kerbside space in Hackney Marshes can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.
- We start with the drawings, specification and programme.
- Quantities are measured and a fixed price returned.
- The sequence is agreed with the site manager.
- Each area is sealed when it’s released.
- Every joint is cleaned, set to depth and sealed with the specified product.
- Snags are cleared and the package signed off with our 12-month guarantee.
Preparing the site
- Send any specification or drawings in advance
- Let us know about inductions and permits
- Tell us which areas need to stay in use
Quotes
The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or give us a call on 01277 525 020 or email drawings and photos if you’d rather talk the job through.
Related advice
New build and refits around Hackney Marshes
The ULEZ covers the whole of Greater London, Hackney Marshes included, so site vehicles need to meet its standards or pay the daily charge. Add booked deliveries and tight storage, and the mastic package needs planning with the site team. There are plenty of hotels within about 2 miles of Hackney Marshes. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.
Projects at colleges like International College of Musical Theatre (0.9 miles south of Hackney Marshes) tend to run to term dates, so the mastic is planned tightly. For a contractor at a hotel such as The Stratford Hotel (1.2 miles south-east of Hackney Marshes), the mastic often has to be finished before a reopening date. On a healthcare site such as Homerton University Hospital, 0.8 miles to the south-west of Hackney Marshes, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.
Hackney Marshes is about 1 mile north-east of Homerton, in Greater London. Any commercial site in Hackney Marshes is covered. Hackney Marshes is one of 764 places in Greater London on our list.
Commercial sites across E5, E10 and E9 are covered. Buildings on Glyn Road, Gilpin Road and Redwald Road are within our area for mastic packages. Access to Hackney Marshes is via the A106 among other routes, so getting applicators and materials to site is simple. Sites close to Hackney Marshes are covered too, including Leyton Grange (1 mile north-east), Lea Bridge (1 mile north-west), Homerton (1 mile south-west), Lower Clapton (1 mile south-west) and Temple Mills (1 mile south-east). A short drive away, we cover London (5 miles south-west), City of Westminster (6 miles south-west), Marylebone (6 miles south-west), Kensington (8 miles south-west), St Pancras (4 miles south-west) and Shoreditch (3 miles south-west).
Landmarks near Hackney Marshes
In Hackney Marshes, that means premises near Leyton Jubilee Park, Lammas School and Sixth Form and The Adam & Eve pub, among other places. For rail, the closest station is Lea Bridge station, roughly 0.7 miles north-west of the centre. A little further out are Tower of London (3.9 miles south-west) and V&A East (1.3 miles south-east). The countryside around Hackney Marshes includes Old Ford Island and Tower Hill.
Hackney Marshes: questions and answers
Is Orient Industrial Park, near Hackney Marshes, within your area?
Yes. Estates, retail parks and business parks around Hackney Marshes, Orient Industrial Park among them, are all within reach. Photos and a short description are enough for a first look.
Could you schedule work at a campus like Loughborough University London for the vacation?
Yes. We plan campus work around teaching, exams and residence turnarounds. Let us know which documents your site asks for, and we will confirm them alongside the quote.
Can the building stay open while you work?
Normally, yes. We phase the work so most of the building stays in use.
Can you send site paperwork?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote.
When is resealing likely to be due?
It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.
Do your applicators hold CSCS cards?
Our applicators are CSCS-carded, and we hold CHAS accreditation and Constructionline membership. We confirm any paperwork you need with the quote.
Do you install fire-rated sealant as part of a package?
Where the specification calls for fire-rated or intumescent sealant around service penetrations or linear gaps, we install it to the manufacturer’s tested details. The design and sign-off belong to the designer, fire engineer or building control.
Cost factors for mastic packages
The price varies from site to site. It mainly depends on:
- The total length or number of joints
- Whether the work must be split into stages
- Joint width, depth and condition
- The product specified
A quote for mastic packages depends on how many there are, their condition and the access. Ask us for a fixed quote.
What we need to price the job
However big the job, the same details help:
- What the building is and how it’s used
- Photos of the joints, close up and from further back
- Specification clauses that apply
- When you need the work done
Specifications, drawings and tender packages are welcome with any enquiry, and we’ll price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.