New Charlton construction mastic
Mastic packages for new-build and refurbishment projects throughout New Charlton and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Failed sealant in an existing building being refurbished
- Snag items on joints that need redoing before handover
- Window and door perimeters that won’t pass inspection
Construction mastic in New Charlton
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Construction mastic in New Charlton
Since 2005 we’ve worked alongside main contractors, developers and fit-out firms. 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 New Charlton, send drawings through our quote form, or phone or email us to talk it through. The enquiries we see most involve oversized or tapered gaps around new frames and external joints sealed in damp or cold conditions that are now failing, on brick and block movement joints, internal decorators’ caulk and floor and skirting junctions. Whether you call it commercial sealant work, mastic application or joint sealing, the work in New Charlton is the same: the right product in a properly prepared joint.
A great deal of London construction is refurbishment of occupied or part-occupied buildings, alongside new blocks. 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.
Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and we explain exactly what that covers when we quote.
- Location
- New Charlton (SE7, SE18, E16)
- Wider area
- Greater London
- Guarantee
- 12 months on every job
- Quote
- A fixed quote before we start
- Call
- 01277 525 020
- Updated
- 3 November 2026
Aftercare for building managers
For the best life from the joints:
- Flag uneven or tapered frame gaps early
- Bring the mastic contractor in after the last trades are through
- Keep scrapers and abrasive pads off new beads
- Record the products used in the O&M file
Expect some settlement in the first months. Flexible sealants in the right joints handle normal movement while rigid fillers and caulk can crack where movement is larger. If that happens, let us know.
External joints sealed in poor weather are a common cause of early failure. Holding off until conditions suit avoids callbacks.
Questions we are asked in New Charlton
Can you work at a site such as Stone Lake Retail Park, by New Charlton?
Yes. We cover New Charlton and the area around it, including industrial estates, business parks and retail parks such as Stone Lake Retail Park. Send details of the unit and the work through our quote form for a quick quote.
Is hospital work, at somewhere like Queen Elizabeth Hospital, something you do?
Yes. Healthcare sites are among the places we work. Each area is agreed with the ward or department and the estates team in advance.
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. Fire-stopping design and sign-off sit with the designer and building control.
Do you take on mastic snagging only?
Yes. We clear snags by redoing joints rather than patching them.
How long before the joints can be used?
That comes down to the sealant and the temperature. Some take light use quickly, others need longer to cure, so we’ll confirm the curing time on the day.
Can you handle several sites?
Yes. Several buildings can share a single quote, with one point of contact across South East England, Greater London and Scotland.
What if there’s asbestos in the old mastic?
Managing asbestos is the dutyholder’s responsibility, so we’ll ask for the register before work on an older building. Work pauses if suspect material is found, until it has been tested.
When something else is needed
Part of a good diagnosis is knowing where sealant stops. We’ll tell you if the real problem is any of the following:
- Specifying the product where the designer hasn’t
- Faulty frames rather than failed sealant
- Oversized gaps that need packing or adjustment by others
If in doubt, speak to us on 01277 525 020 or email a schedule or drawings and we’ll say what we think before you book.
Joints and surfaces we work on
- Brick and block movement joints
- Window and door perimeters
- Floor and skirting junctions
- Sanitary and kitchen joints
- Cladding and panel joints
- Internal decorators’ caulk
Sites and facades in and around New Charlton
A 2-mile radius around New Charlton takes in plenty of hotels. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up. Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in New Charlton. Delivery slots and scarce storage shape how and when the mastic goes in.
Projects at colleges like Shooters Hill Sixth Form College (to the south-east of New Charlton) tend to run to term dates, so the mastic is planned tightly. On a campus such as Ravensbourne University London (1.5 miles north-west of New Charlton), new teaching buildings and residences are usually built and refurbished around the academic year.
New Charlton is about 2 miles north-east of Greenwich, in Greater London. Across the SE7 postcode area, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Across Greater London, 764 places are covered, New Charlton among them. Our London page has more on work in that area.
Commercial sites across SE7, SE18 and E16 are covered for mastic packages. If your site is on Floyd Road, Priolo Road and Hasted Road or close by, we can quote for mastic packages. Close to New Charlton, our area also takes in Charlton (1 mile south-east), Westcombe Park (1 mile south-west), Woolwich (1 mile east), Vanbrugh Park Estate (1 mile south-west) and Maze Hill (2 miles south-west). Nearby towns on our patch include 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 (5 miles north-west).
Landmarks near New Charlton
In New Charlton, that means premises near Thames Barrier Park, Thorntree Primary School and The Victoria pub. There’s a railway station in New Charlton itself: Charlton station. Other landmarks nearby include Charlton Athletic Museum (less than half a mile south) and Greenwich Castle (1.9 miles south-west). Open spaces near New Charlton include Gilbert's Pit.
What we are called out for in New Charlton
On construction sites, joints typically fail early because of when they were sealed, not what was used. Sealing before decorators, flooring or other trades have finished leaves joints exposed to damage.
Site and facilities staff are often the first to spot these:
- Frame gaps too wide for sealant alone
- Window and door perimeters that won’t pass inspection
- New external sealant already peeling away
- Cracks opening in caulked internal joints
Hotel extensions and refits, at places such as London City Airport Hotel (1 mile north-east of New Charlton), typically run between busy periods, so the sealing is squeezed into short windows.
Comparing quotes
- Will CSCS-carded applicators be on site?
- How the joint faces will be prepared and primed
- How long is the guarantee, and what does it include?
- Which product they’ll use, and why it suits the joint
Doing it in-house
Redoing a failed joint typically costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.
Nearby places to New Charlton
What else we do in New Charlton
What affects the price in New Charlton
What shapes the price:
- Removal of failed or old sealant
- The size and state of each joint
- Induction, permit and paperwork requirements
- Phasing around occupants
There’s no price list, since every building and every scope is different. For a fixed figure, call for a quote.
Sending details for a quote
We can often quote from photos and a few details. It helps to include:
- Rough lengths or quantities, or drawings if you have them
- The type of building and who uses it
- The asbestos register, for older buildings
- Any dates the work must fit around
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, phone 01277 525 020 or use the quote form.
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 we finish with a walk round so the work can be signed off. Most London premises stay occupied while we are on site, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.
- Drawings, the sealant specification and your programme come to us for pricing.
- A fixed quote sets out the scope, the products and the sequence.
- Any site paperwork you need (RAMS, insurance certificate, CSCS details) is confirmed with the quote.
- Work follows the programme, area by area, as rooms and elevations become ready.
- Each joint is prepared, backed to depth and sealed in the product the specification names.
- We close out snagging and hand over with a 12-month guarantee.
What we need from you
- Explain the parking and delivery arrangements
- Send asbestos survey details if the building is pre-2000
- Flag any permit to work we will need
Request a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. For smaller jobs, photographs and a description will do.