Addiscombe mastic sealing
Commercial sealant work in Addiscombe for contractors, FMs and building owners: mastic sealing for building owners, managing agents and housing associations, quoted at a fixed price.
- Estate-wide sealant that is simply worn out
- Water getting in round frames after rain
- Worn sealant at communal door frames
Mastic sealing for Addiscombe sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Mastic sealing for commercial buildings in Addiscombe
Most buildings come with mastic joints nobody has looked at since handover, and it ages quietly: it sits round windows and doors, along external joints and through communal areas. Once it cracks, hardens or comes away, draughts and water find a way in along with complaints. If you’re dealing with movement joints with sealant missing and no planned programme for sealant, we can help, whatever the surface. Facilities teams, main contractors and managing agents in Addiscombe tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
Across Greater London, Addiscombe included, the ULEZ applies, and parking and loading rules differ from street to street. For block-wide work, a place to park and store materials saves time on every visit.
Our workmanship is guaranteed for 12 months, wherever the site is. If our installation lets you down in that time, we return and fix it.
- Place
- Addiscombe (CR0, SE25, CR9)
- Region
- Greater London
- Cover
- A 12-month guarantee
- Quote
- A fixed quote before we start
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Honest limits
Being straight saves everyone time. New sealant won’t cure:
- Masonry that has broken away beside the joint
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
- Leaks from above rather than through a joint
If in doubt, call the office on 01277 525 020 or email a schedule or drawings and we’ll say what we think.
What we seal
- Communal entrances and stairwells
- Communal kitchens and washrooms
- External wall and movement joints
- Window and door perimeters on blocks
- Shopfronts below residential blocks
- Balcony and threshold joints
Towns and villages near Addiscombe
What else we do in Addiscombe
Addiscombe: questions and answers
Do you work for managing agents with blocks near Norwood Junction station?
Yes. Blocks of any size are within what we do. Give us the building’s details and say how residents are notified, and we’ll quote and plan to suit.
Can you work at a site such as Chaffinch Business Park, by Addiscombe?
Yes. We cover Addiscombe and the area around it, including industrial estates, business parks and retail parks such as Chaffinch Business Park. A few photos and the unit address let us price the work.
What paperwork can you provide?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We hold CHAS accreditation and Constructionline membership.
Is mastic sealing guaranteed?
Every building we reseal has a 12-month guarantee. It covers our workmanship, not later building movement, damage or frame failures.
Is asbestos a concern with old mastic?
Asbestos removal isn’t part of our work. Anything suspect is tested before we carry on in line with the dutyholder’s asbestos management.
Can weather delay the job?
It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.
Diagnose, treat, sign off
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Joint faces are cleaned back to sound, dry surfaces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. All of Greater London is in the ULEZ, and kerbside space in Addiscombe can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.
- First comes a look at the joints and, for older buildings, the asbestos records.
- A fixed quote covers the joints, products and order of work.
- We strip out the old sealant.
- Joint faces are cleaned, backed and resealed.
- We finish each building before moving to the next.
Before we start on site
- Have the specification and drawings to hand
- Flag any permit to work we will need
- Explain the parking and delivery arrangements
Request a quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, give us a call on 01277 525 020 or send photos by email.
Related advice
Block-wide mastic in Addiscombe
For a London block, the agent or landlord usually handles notices to residents and access to flats. Our programme follows the access you agree with residents. Addiscombe has four care or nursing homes no more than 2 miles away. For owners and operators of care buildings, window perimeters and external joints are best renewed in planned phases around residents.
For a school such as Oasis Academy Shirley Park, perimeter mastic on windows and doors is a holiday job. If you own or manage units on a site such as Chaffinch Business Park, 1.3 miles north-east of Addiscombe, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit.
Addiscombe is about 2 miles north-east of Croydon, in Greater London. Businesses, contractors and managing agents in Addiscombe use us for work on mastic joints. We work across 764 places in Greater London, large and small. Sites around London have their own page, roughly 8 miles from Addiscombe.
We take on mastic joints across the CR0, SE25 and CR9 postcode area, for business premises of every kind. For a building on Grant Road, Capri Road and Coe Avenue or nearby, send details and we will quote for mastic joints. You will find Addiscombe on or near the A232. We also cover Shirley Oaks (1 mile east), Ashburton (1 mile north), Woodside (1 mile north), Shirley (1 mile east) and Monks Orchard (1 mile east). Further afield, our area takes in London (8 miles north), City of Westminster (10 miles north), Marylebone (10 miles north), Kensington (10 miles north-west), St Pancras (10 miles north) and Shoreditch (10 miles north).
What’s near Addiscombe
Locally, jobs take us to sites close to The Woodside Academy, The Cricketers pub and Ashburton Park. Addiscombe’s nearest station is Norwood Junction station, about 1.2 miles north of the centre. A little further out are St George's Walk (1.5 miles west) and Crystal Palace Museum (2.7 miles north). Green spaces nearby include Duppas Hill and Bramley Bank.
Keeping the joints sound
Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. We suggest:
- Protect low-level joints in entrances
- Avoid piecemeal callouts where you can
- Make mastic part of routine maintenance checks
- List the paperwork your organisation requires 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.
Joints on a building age together, so it pays to look at the whole elevation. A planned reseal saves repeated visits.
General trades versus a 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 easy to get wrong without experience.
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. A poor seal in places like these tends to cost more to put right later.
When to call us in Addiscombe
UV and rain age external sealant. It stiffens, stops stretching and cracks, especially on south and west faces.
Common reasons buildings call us in:
- Draught complaints from residents or tenants
- Complaints coming in block by block
- Leaks at window and door perimeters
- Window mastic that has split and shrunk
Blocks of flats and mixed-use buildings often cluster around stations such as Norwood Junction station (to the north of Addiscombe) and their window and balcony mastic tends to age at the same rate across a building.
What to look for in a quote
- Can the work be phased to keep areas open?
- The named product and why it was chosen
- Their public liability cover
- Who will actually carry out the work
Work for main contractors and building owners
CHAS accredited and a Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.
Whether you’re 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. We can agree access arrangements and keyholder contacts beforehand.