Mastic sealing for building owners and managing agents in Old Town, Greater London
Mastic sealing for building owners, managing agents and housing associations in Old Town. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- A mix of products and colours from past repairs
- The same joint failures repeated across a portfolio
- No planned programme for sealant
Mastic sealing for Old Town sites
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Common questions from Old Town clients
Can work in a care setting near Old Town go ahead while residents are there?
Yes. We work around residents’ routines, a room or two at a time. Any site rules, from signing in to infection control, are agreed before we start.
Can you cope with the access rules in a London building?
Yes. Inductions, permits and timed loading are routine for us in London. Share the building’s contractor rules and we will work to them. We allow for the ULEZ, which covers every borough
Can you send RAMS and CSCS details before starting?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We are CHAS accredited and a Constructionline member.
Do you work with property factors and landlords?
Yes, that’s exactly who this service is for. We work through buildings in a planned order with dates agreed in advance.
What if the old mastic contains asbestos?
In older buildings, old mastic can contain asbestos. We check the asbestos register or survey before disturbing it and suspect material is tested first.
Will you just go over the old sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
How long does a job like this take?
We plan the time on site around your programme and access. You’ll have an expected duration with the quote.
Mastic sealing for commercial buildings in Old Town
Most buildings come with mastic joints nobody has looked at since handover, and it ages quietly: window perimeters, door frames, external joints and communal junctions all rely on it. When it hardens, splits or pulls away, water and draughts follow along with complaints. We work on external wall and movement joints, balcony and threshold joints and communal kitchens and washrooms, and what we are called in for most is the same joint failures repeated across a portfolio and draught complaints from residents or tenants. One point of contact handles commercial sealant work in Old Town from the first photographs to the final walk-round, whether it’s one building or several.
Planning mastic work on a London block means notices to residents, access to flats and agreed working areas. Work is planned with the agent so residents get notice and access is arranged in advance.
What our 12-month guarantee covers is the way we did the job: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Location
- Old Town (CR0, CR9, CR90)
- Region
- Greater London
- Cover
- 12 months on our workmanship
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
What sealant work can’t fix
Honesty saves time and money. New sealant won’t cure:
- Leaks from above rather than through a joint
- Misted or failed double-glazed units
- Asbestos-containing sealant, which we don’t remove
Not sure which it is? You can call the office on 01277 525 020 or send photos by email and we’ll tell you honestly.
Surfaces we seal
- Shopfronts below residential blocks
- Communal entrances and stairwells
- External wall and movement joints
- Window and door perimeters on blocks
- Balcony and threshold joints
- Communal kitchens and washrooms
Should maintenance staff do it?
Certain joints really need a specialist: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong normally costs more in the end than doing them right.
General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.
What we are called out for in Old Town
Occasionally the substrate fails, not the sealant for example where render or brick edges crumble. We will tell you if the joint edges need repairing before resealing.
Clients normally get in touch after noticing something like this:
- Water getting in round frames after rain
- Worn sealant at communal door frames
- Failed external movement joints
- Patchy repairs in mismatched sealant
Site managers at schools like The Minster Nursery and Infant School can fit frame mastic into the summer works.
What your quote should include
- Do they follow the manufacturer’s priming guidance?
- The named product and why it was chosen
- How they’ll work around occupants
- Whether old or failed sealant will be cut out, not overlaid
Towns and villages near Old Town
More services for Old Town
How the job changes by surface
Commercial and mixed-use buildings
Where retail and residential share a building, so phasing has to suit both. Tell us your site hours and access windows and we’ll plan around them.
Window and door perimeters on blocks
On most blocks, the frame-to-wall joint is where failure shows first. Old perimeter mastic is removed, the joint prepared and new sealant tooled in.
On site: what to expect
Tell us your site hours and access windows and we will plan around them. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. For a job in Old Town, access comes first. Send the building rules and access times with your enquiry.
- A building-by-building inspection lists the failed joints.
- The quote is fixed and split as suits you.
- We agree the programme and dates with you.
- Old mastic is removed and the joint faces prepared.
- New sealant goes in with backing rod and primer where needed.
- We check the finished work and confirm the guarantee.
Before we start on site
- Share your working hours and any access restrictions
- Warn occupants and staff about the work
- Clear stock, furniture or equipment away from the joints
Quotes
A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Send what you have, and we’ll arrange a site visit if anything is unclear.
Related advice
Planned mastic for Old Town portfolios
There are four care or nursing homes within about 2 miles of Old Town. For owners and operators of care buildings, window perimeters and external joints are best renewed in planned phases around residents. Blocks in London are usually run by managing agents, landlords or housing associations, with residents to notify and access to arrange. Our programme follows the access you agree with residents.
If you own or manage units on a site such as Pilton Industrial Estate, which lies north of Old Town, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit. Buildings close to stations like West Croydon station (to the north of Old Town) are often flats over shops, with frame mastic to keep sound.
Old Town is about 1 mile north-west of Croydon, in Greater London. We send applicators to Old Town for mastic joints, handled exactly as we handle every other area. 764 places across Greater London fall within our area, including Old Town. For work in that direction, see our London page (9 miles or so).
Commercial sites across CR0, CR9 and CR90 are covered. If your site is on Park Lane, Fell Road and Abbey Road or close by, we can quote for mastic joints. Just outside Old Town, we also work in Waddon (1 mile south-west), Broad Green (1 mile north), Beddington (1 mile west), Bandonhill (1 mile south-west) and Russell Hill (2 miles south-west). A short drive away, we cover London (9 miles north), City of Westminster (10 miles north), Marylebone (10 miles north), Kensington (10 miles north-west), St Pancras (11 miles north) and Shoreditch (11 miles north).
Local landmarks in Old Town
Locally, jobs take us to sites close to Rutherford School, The Gun Tavern and St Andrew's CofE School. There’s a railway station in Old Town itself: West Croydon station. Well-known places in the area include Croydon University Hospital (1.2 miles north) and Croydon Airport Visitor Centre (1.3 miles south-west). The countryside around Old Town includes Roundshaw Downs and Duppas Hill.
Building owners, agents and FMs in Old Town
Hospitality, education, healthcare, office and retail clients book us directly too. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.
Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.