Mastic Sealing in Crossness
Our CSCS-carded applicators take on mastic sealing for building owners, managing agents and housing associations in Crossness and the surrounding area. Send photographs or drawings for a fixed quote.
- Estate-wide sealant that is simply worn out
- Worn sealant at communal door frames
- Open joints in brickwork or panels
Mastic sealing across Crossness
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Honest limits
A few problems need another trade or a different fix, and we say so rather than covering them up:
- Roof leaks, gutters or failed flashings that aren’t sealant joints
- Failed window or door frames, which need a window contractor
- Broken glass or failed sealed units
If in doubt, give us a call on 01277 525 020 or send details through our quote form and we will say what we think.
Surfaces we seal
- Communal kitchens and washrooms
- Window and door perimeters on blocks
- Shopfronts below residential blocks
- Balcony and threshold joints
- External wall and movement joints
- Communal entrances and stairwells
Mastic sealing in Crossness, done properly
Our clients include managing agents, property factors in Scotland, housing associations and landlords with block or commercial portfolios. A planned, building-by-building programme often works better than reacting to each complaint and we quote and schedule each building in turn. If you are dealing with damp patches beside frames and brittle perimeter mastic across a building, we can help, whatever the surface. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Crossness is the same: the right product in a properly prepared joint.
For managing agents in Crossness, resident access, notice periods and the building’s rules shape the job. We work to the agent’s notice and access plan, so residents know what’s happening.
Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.
- Where
- Crossness (SE2, SE28, DA18)
- Region
- Greater London
- Cover
- A 12-month guarantee
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
On site: what to expect
We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. Then we strip out anything that has failed, prepare every joint and seal it. In Crossness, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Phased work keeps the rest of the building in use.
- We inspect each building and record the joints that have failed.
- You get a fixed quote, per block or for the whole programme.
- We agree the programme and dates with you.
- Failed sealant is removed and the faces prepared.
- New sealant goes in with backing rod and primer where needed.
- We check the finished work and confirm the guarantee.
Preparing the site
- Tell staff and tenants when we’ll be in
- Tell us which areas need to stay in use
- Explain the parking and delivery arrangements
Request a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price the work to it. For smaller jobs, photographs and a description will do.
Advice
How the quote is worked out
We price every job individually. The main factors are:
- Specialist products, such as fire-rated or hygienic sealants
- Any access equipment needed
- Phasing around occupants
- The site’s rules and procedures
Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Mention the access as part of your enquiry.
Before you send an enquiry
It doesn’t need to be a full survey. A few details are enough to get going:
- Drawings or a marked-up plan, if available
- The site address and postcode
- The asbestos register, for older buildings
- Whether the building will be occupied during the work
Every quote starts with the facts: the joints involved, quantities, access and the product called for. Send what you have, and we’ll arrange a site visit if anything is unclear.
Questions about Crossness
Do you work in London buildings with loading restrictions?
Yes, most London buildings have access rules of some kind, and we plan around them. Send the building rules and access times with your enquiry. We allow for the ULEZ, which covers every borough
Does your area include sites such as Kencot Close Business Park, near Crossness?
Yes. We cover Crossness and the area around it, including industrial estates, business parks and retail parks such as Kencot Close Business Park. Send details of the unit and the work through our quote form for a quick quote.
When can the area be used after sealing?
We’ll confirm how long the chosen product needs to cure, and sign any area that should be left alone.
Do you work in Crossness?
Yes. Crossness falls within our area, and you can give us a call on 01277 525 020 or use the quote form to get started.
Do you do block-wide mastic programmes?
Yes. We survey and price each building, then work through them in order, and the programme can start with the worst.
What about access for upper-floor joints?
It depends on the building. We agree access with you at quote stage so there are no surprises.
What will the job cost?
Every job gets its own fixed quote. For yours, phone 01277 525 020 or email the details over with a description of the work.
What happens if it’s left?
Reacting to every complaint means sending someone out block by block. Planned resealing covers a whole building or estate in one go and is simpler to manage and budget. Getting scaffold, permits or access booked in Crossness takes effort, so while access is arranged it pays to renew all failing joints, not just the worst.
Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a quote and we’ll explain how it’s made up.
Why us?
- Standard and matched colours in many product ranges
- Colours chosen to suit frames, cladding or finishes where possible
- A fixed quote before work starts
- Commercial sealant work since 2005
See what affects the cost and our accreditations.
Towns and villages near Crossness
Other services in Crossness
Looking after the joints
Keep the joints in good shape with a few simple steps:
- Make it easy for occupiers to report draughts
- Share your contractor requirements early
- Start inspections with the most exposed faces
- Share the asbestos register when you send details
Our workmanship is covered for 12 months, so report any failure in that time. After that, regular inspection keeps the programme on track.
One failed perimeter usually means others on the same building are close, so it pays to look at the whole elevation. A planned reseal saves repeated visits.
What we are called out for in Crossness
We often find joints filled solid with no backing rod, so the mastic is glued to the joint bottom too. It can’t stretch properly and splits as the building moves.
Things that typically lead to an enquiry:
- Damaged joints in communal entrances and corridors
- Failed external movement joints
- Mastic failing across several blocks on an estate
- Cracked, hardened mastic round windows on a block
If you manage student housing near a university such as University of East London, 3 miles to the west of Crossness, the summer turnaround is the time for mastic.
What to look for in a quote
- Proof of insurance
- How joint depth will be controlled
- Health and safety accreditation such as CHAS
- Will RAMS and insurance details be available?
Looking after buildings in and around Crossness
Crossness has two care or nursing homes no more than 2 miles away. Frame mastic on care buildings is best renewed elevation by elevation, with the manager deciding timings. London blocks come with residents to inform, access to agree and often a concierge or estate office to work with. Our programme follows the access you agree with residents.
For owners of several units at places like Kencot Close Business Park, 0.5 miles to the south-east of Crossness, one programme can deal with frame and external mastic across the lot. If you look after a block within reach of Abbey Wood station (0.8 miles south-west of Crossness), frame and balcony mastic can be renewed on one programme.
Crossness is about 2 miles north-west of Erith, in Greater London. We cover commercial sites throughout Crossness, whether it’s a single job or part of a planned programme. Crossness is one of 764 places we cover in Greater London. London is covered too, some 10 miles away.
Work on mastic joints is covered throughout SE2, SE28 and DA18, for business premises of every kind. Buildings on Kale Road, Haldane Road and Seacourt Road are within our area. Crossness sits on or close to the A2016, useful when we plan access and materials. Nearby places we also cover include Thamesmead (1 mile north-west), Dagenham Dock (1 mile north), Barking Riverside (2 miles north-west), Hornchurch Marshes (2 miles north-east) and Dagenham Green (2 miles north) for mastic joints. Bigger towns within reach include London (10 miles west), City of Westminster (12 miles west), Marylebone (12 miles west), Kensington (14 miles west), St Pancras (11 miles west) and Shoreditch (9 miles west).
Around Crossness
Around Crossness, our work takes us to commercial buildings near Lesnes Abbey Woods, Harris Garrard Academy and Belvedere Working Mens Club pub. Crossness’s nearest station is Abbey Wood station, about 0.8 miles south-west of the centre. Nearby you will also find Erith and District Hospital (2.1 miles south-east) and Gallions Reach Shopping Park (2.4 miles west). Open spaces near Crossness include Crossness Nature Reserve.