Construction and new-build mastic in Charlton, Greater London
Mastic packages for new-build and refurbishment projects across Charlton, by CSCS-carded applicators. Fully insured and CHAS accredited.
- Window and door perimeters that won’t pass inspection
- Mastic snags holding up handover
- New external sealant already peeling away
Need construction mastic in Charlton?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Construction mastic in Charlton
Buyers, tenants and clients notice sealant lines long before they notice the structure. A smeared bead round a window or a gap behind a worktop ends up on the snag list. Our aim is joints that pass at the first inspection, whatever the size of the scheme. If you’re dealing with bath and shower joints scraped during the final clean and cracks opening in caulked internal joints, we can help, whatever the surface. For commercial sealant work in Charlton, you deal with one contact from quote to sign-off, for single jobs and planned programmes alike.
Around Charlton, as across London, much of the work is refurbishing existing buildings as well as building new ones. 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 Charlton as everywhere else we work. If our installation lets you down in that time, we return and fix it.
- Where
- Charlton (SE7, SE18)
- Region
- Greater London
- Guarantee
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Charlton: questions and answers
Do you take on jobs in Charlton where loading and access are tightly controlled?
Yes, we plan every London job around the building’s own access rules. Say when the building is occupied and when it’s quiet, and we will plan accordingly. All of Greater London is inside the ULEZ, and our planning allows for it
Does your area include sites such as Stone Lake Retail Park, near Charlton?
Yes. Our area takes in Charlton and its surroundings, with estates and business parks such as Stone Lake Retail Park included. Photos and a short description are enough for a first look.
What about RAMS and site documents?
Let us know which documents the site needs, such as RAMS, an insurance certificate or CSCS details, and we will confirm them with the quote.
Can you work plot by plot or floor by floor?
Working to your programme, we seal each area as it’s handed over. The sequence is agreed with the site manager at the start and updated as the programme moves.
Can you clear a mastic snag list before handover?
Yes. Share the list and photos, and a fixed quote follows, then clear it to your programme.
How do we ask for a quote?
You can use the quote form on this site; alternatively, phone 01277 525 020 or email a schedule or drawings. Photos, drawings or a joint schedule help us quote quickly.
Can staff carry on working while you’re here?
In most cases, yes. Phased work can be planned so areas stay in use.
Other services in Charlton
Honest limits
A few problems need another trade or a different fix, and we say so rather than covering them up:
- Joint design decisions that belong to the architect or engineer
- Glazing units that are cracked or misted
- Oversized gaps that need packing or adjustment by others
If in doubt, phone 01277 525 020 or send photos by email and we’ll say what we think before you book.
Joints and surfaces we work on
- Cladding and panel joints
- Brick and block movement joints
- Floor and skirting junctions
- Sanitary and kitchen joints
- Internal decorators’ caulk
- Window and door perimeters
After the work
After handover, these steps help:
- Don’t force external sealing on a damp or frosty day
- Get the mastic subcontractor involved early in the programme
- Ask installers to correct oversized gaps first
- Release areas for mastic once other trades have finished in them
At handover, keep the product details with the O&M information. That helps the building owner maintain the joints later, and tells you what to reseal with. Tell us what records you need and we will confirm with the quote.
One unsealed frame can let water into finished internal areas. On a new building that means remedial work after decorating. A check of every frame before decorators start is worth the time.
Diagnose, treat, sign off
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. All of Greater London is in the ULEZ, and kerbside space in Charlton can be scarce. 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.
- We agree with the site team which areas come first.
- 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.
Getting the site ready
- Point out parking and an unloading spot
- Send any specification or drawings in advance
- Tell us your opening times and when work is allowed
Request a quote
Send us photos, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we’ll arrange a site visit.
Related advice
Owners, agents and contractors
Building owners and managing agents use us on sealant work across single buildings or whole portfolios around Charlton. One quote can cover more than one site, which keeps the paperwork simple.
Whether you are a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.
Leave it or put it right?
Refurbishments sometimes budget for new windows when the frames are sound and only the seal has failed. If the frame is in good order, cutting out and resealing the perimeter can be all it needs. If the frame is life-expired, we will tell you. In Charlton, each extra visit means more notices, permits and disruption, so cutting the old sealant out fully and doing it right once is the better route.
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.
Why appoint us
- Sealing commercial buildings since 2005
- A range of standard colours, depending on the product
- Joints cleaned back to sound surfaces
- Colour options checked against the specified product
See how commercial sealant jobs are priced or our accreditations.
Mastic packages on Charlton sites
Charlton has plenty of hotels close by, all within 2 miles. When hotels extend or refit, the work is usually squeezed between peak periods, mastic included. The ULEZ covers the whole of Greater London, Charlton included, so site vehicles need to meet its standards or pay the daily charge. Delivery slots and scarce storage shape how and when the mastic goes in.
When a college such as Shooters Hill Sixth Form College (1.4 miles south-east of Charlton) builds or refurbishes, the mastic package usually has to fit around students and staff. Recladding or extending a unit at a site like Stone Lake Retail Park (less than half a mile north-west of Charlton) brings panel joints and frame perimeters into the programme. On a campus such as Ravensbourne University London (1.7 miles north-west of Charlton), new teaching buildings and residences are typically built and refurbished around the academic year.
Charlton is about 2 miles west of Plumstead, in Greater London. We cover commercial sites throughout Charlton, for single jobs and planned programmes alike. We work across 764 places in Greater London. Sites around London have their own page, about 6 miles away.
If you need construction mastic in SE7 and SE18, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Buildings on Floyd Road, Guild Road and Priolo Road are within our area. If your building is just outside Charlton, we cover New Charlton (1 mile north-west), Westcombe Park (1 mile west), Woolwich (1 mile east), Vanbrugh Park Estate (1 mile south-west) and Kidbrooke (2 miles south). Further afield, our area takes in London (6 miles west), City of Westminster (8 miles west), Marylebone (8 miles west), Kensington (10 miles west), St Pancras (7 miles west) and Shoreditch (6 miles north-west).
What’s near Charlton
We work on buildings around Charlton Park, Wildwood Montessori School and Royal Greenwich Trust School. Charlton has its own railway station: Charlton station. Other landmarks nearby include British Hospital for Mothers and Babies (0.5 miles east) and Gallions Reach Shopping Park (2.3 miles north-east). The countryside around Charlton includes Gilbert's Pit.
Site staff or a sealant specialist?
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.