South East England and London

Construction Mastic in Greater London

Construction mastic in all 764 towns and villages of Greater London, done properly, with a fixed quote before we start and a 12-month guarantee.

Book construction mastic in Greater London

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Get a quick quote 01277 525 020

Towns we cover in Greater London

Mastic packages for new-build and refurbishment projects. Choose your town from the list to see local details, and call or email us for a quote.

Biggest towns in Greater London

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Postcodes in Greater London

About construction mastic in Greater London

On refurbishments, the mastic package normally 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 on older buildings we ask for the asbestos survey before disturbing anything. After that, the joints are prepared and sealed to the specification. We work on sanitary and kitchen joints, floor and skirting junctions and cladding and panel joints, and the usual reasons a site gets in touch are sanitary sealant damaged by following trades and internal caulk splitting as the building dries out.

Diagnose, treat, sign off: that’s the shape of every visit. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and the job ends with a walk round and sign-off.

Drawings, the sealant specification and your programme come to us for pricing.
You receive a fixed quote listing scope, products and phasing.
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.
Joints are cleaned, primed where the maker requires it, backed and sealed to the specification.
We close out snagging and hand over with a 12-month guarantee.

Pricing in Greater London

The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote and we’ll explain how it’s made up.

Why appoint us

Our applicators hold CSCS cards
Public liability insurance in place
12-month guarantee on workmanship
Sealing commercial buildings since 2005

Ask for a quote

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we will return a fixed quote that you can work with. If you have questions first, call 01277 525 020 or send details through our quote form.

Landmarks near London

We work on buildings around St Mary-at-Hill, St George the Martyr and The BFI Reuben Library and the streets around them. Also close by are Trinity Arms Public House (under half a mile south-east), Ark Globe Academy (less than half a mile south), Charles Dickens Primary School (under half a mile north-west) and Newington Gardens (less than half a mile south). There’s a railway station in London itself: Elephant & Castle station. Other landmarks nearby include Surrey Dispensary (less than half a mile south-east) and Baynard's Castle (0.9 miles north). Green spaces nearby include Bellenden Road Nature Garden and St. James's Park Lake.

Schools near London include London School of Musical Theatre (under half a mile west)

Sites and facades across Greater London

Across Greater London, refurbishment brings as many facade and perimeter joints as new build: replacement windows, recladding and fit-outs in places such as London, City of Westminster and Marylebone. New frames against old masonry need a product, primer and joint design to suit both.

The South East has large numbers of business parks and industrial estates, especially around the motorway corridors, and Greater London is part of the area we cover.

London: For a contractor working at a hospital such as Guy's Hospital, under half a mile north-east of London, perimeter and facade sealing is planned around patients and deliveries. Further education sites such as Morley College London, 0.7 miles west of London, are extended and refurbished from time to time, with mastic often programmed into the summer break.

Leave it or put it right?

Some packages split mastic across the window fitter, kitchen fitter and plumber. The result tends to be uneven finishes and arguments about who should seal what. One mastic subcontractor for the lot keeps it simple and a consistent finish.

What your quote should include

Do they follow the manufacturer’s priming guidance?
How they handle RAMS and site documents
Is the sealant right for the movement and the substrate?
How they’ll work around occupants

Different surfaces, different methods

Window and door perimeters

Gaps around frames have to be within the sealant’s range. We check them during the first walk-round and flag any that need packing or adjusting.

Snagging before handover

Damaged, missed or untidy joints make up most snag lists. We price snagging as part of the package or as a separate visit, depending on what suits the programme.

Aftercare for building managers

A few simple habits keep the new joints working:

Share drawings and the specification as soon as possible
Keep product details for future maintenance
Don’t force external sealing on a damp or frosty day
Keep scrapers and abrasive pads off new beads

If a joint is damaged after sealing, flag it early. We can return to clear snags before handover as agreed in the quote.

Sanitary joints that fail early become defects soon after occupation. Water gets behind trays, vanity tops and panels. Proper preparation, with the right silicone first time, keeps it off the defects list.

Quoting for work in Greater London

Your fixed quote is built from the real scope. It allows for:

Site requirements such as inductions and permits
Access and working height
Location, for remote and island sites
Backing rod, priming and other preparation

We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote.

What to include in your enquiry

There’s no need for a formal survey. A few details are enough to get going:

Any specification or named product
Rough lengths or quantities, or drawings if you have them
Clear photos of the problem areas
Asbestos survey details if the building is older

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To start the process, call 01277 525 020 or send photos by email.

Should maintenance staff do it?

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: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong typically costs more in the end than doing them right.

Questions we are asked in Greater London

Can fire-rated sealing at service penetrations be included?

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.

How long do sealant joints last?

It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.

Can the sealant be colour-matched?

It depends on the product specified. Some ranges are wide, others limited, so we’ll confirm the colours available for the specified product with the quote.

What will the job cost?

Every job gets its own fixed quote. For yours, ring 01277 525 020 or email us.

Is any job too small?

Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.

Can you clear a mastic snag list before handover?

Yes. We can work through a mastic snag list area by area before handover.

Will you just go over the old sealant?

No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.