Mastic sealant contractors in Sanderstead
Mastic sealing in Sanderstead, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Open joints in brickwork or panels
- Brittle perimeter mastic across a building
- Water getting in round frames after rain
Mastic sealing for Sanderstead sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Planned mastic for Sanderstead portfolios
Sanderstead has five 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. We work to your notice and access plan.
If you’re responsible for a building such as Church of All Saints, frame and door mastic needs the same attention as any other property. Older buildings near Sanderstead, from historic houses such as Addington Palace, 2.3 miles north-east of Sanderstead, to more modest stock, need compatible products when frames are resealed.
Sanderstead is about 2 miles east of Purley, in Greater London. Across the CR2 postcode area, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Sanderstead is one of 764 places in Greater London on our list for mastic joints. For work in that direction, see our London page, about 11 miles away.
Commercial sites across CR2 and CR8 are covered. Buildings on Hyde Road, Brian Avenue and Sundown Avenue are within our area for mastic joints. With the A2022 nearby, Sanderstead is straightforward for us to reach. Sites close to Sanderstead are covered too, including Riddlesdown (1 mile south-west), Kenley (1 mile south-west), South Croydon (1 mile north-west), Selsdon (1 mile north-east) and Hamsey Green (1 mile south-east). Nearby towns on our patch include London (11 miles north), City of Westminster (13 miles north), Marylebone (13 miles north), Kensington (12 miles north-west), St Pancras (13 miles north) and Shoreditch (13 miles north).
Near you in Sanderstead
In Sanderstead, that means premises near Selsdon Park Hotel, Littleheath Woods and Riddlesdown Collegiate and the streets around them. For rail, the closest station is Riddlesdown station, roughly 0.8 miles west of the centre. Well-known places in the area include Purley War Memorial Hospital (1.4 miles west) and Croydon Airport Visitor Centre (2.1 miles north-west). Open spaces near Sanderstead include Duppas Hill and Foxley Wood.
Mastic sealing in Sanderstead, done properly
Our clients include managing agents, property factors in Scotland, housing associations and landlords with block or commercial portfolios. Many prefer a planned programme to one-off visits and we quote and schedule each building in turn. Site teams most often ask us about failed external movement joints and leaks at window and door perimeters, on communal kitchens and washrooms, shopfronts below residential blocks and balcony and threshold joints. Most enquiries from Sanderstead start with one failed joint and grow into a wider look at the building: we look at the rest while we’re there and tell you what we find.
Across Greater London, Sanderstead included, the ULEZ applies, and parking and loading rules differ from street to street. For a block or estate, it helps to know where we can park and stage materials.
A 12-month guarantee applies to all our work. If an installation problem shows up, ring 01277 525 020 or email us and we will arrange a return visit.
- Where
- Sanderstead (CR2, CR8)
- Wider area
- Greater London
- Guarantee
- A 12-month guarantee
- Price
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Nearby places to Sanderstead
Also in Sanderstead
Common questions from Sanderstead clients
We manage a building near Riddlesdown station. Can you help?
Yes. Blocks of any size are within what we do. We work to your notice and access arrangements.
Can you cope with the access rules in a London building?
Yes. Inductions, permits and timed loading are routine for us in London. Say when the building is occupied and when it’s quiet, and we’ll plan accordingly.
Can you follow the specification on our project?
Yes. The specification and the manufacturer’s installation guidance are what we work to.
Can you reseal a whole block or estate?
We can. Each building is inspected, quoted and scheduled in turn starting wherever is most urgent.
How do you handle work on occupied blocks?
Occupiers stay in the building throughout. If any flats or units need access, we’ll tell you in advance so you can arrange it with occupiers.
What if the old mastic contains asbestos?
We don’t remove asbestos-containing materials. Anything suspect is tested before we carry on in line with the dutyholder’s asbestos management.
Does weather matter for sealant work?
It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Internal work is far less affected.
After the work
Keep the joints in good shape with a few simple steps:
- Have the asbestos survey to hand for older buildings
- Encourage occupiers to report problems at frames
- Mention RAMS, insurance or CSCS requirements up front
- Protect low-level joints in entrances
Log the date and extent of the resealing for each block. It helps plan the next round and shows what was done.
Joints on a building age together so a single failure is a sign to check the rest. Doing them together saves going back again and again.
Signs you need mastic sealing in Sanderstead
Buildings move with temperature and moisture, and the sealant takes up that movement. A joint that was too narrow, too thin or the wrong product can’t cope long before it should.
It’s worth sending us details if you spot any of the following:
- Estate-wide sealant that is simply worn out
- Draughts at frames across a block
- Complaints coming in block by block
- Movement joints with sealant missing
If your remit includes a building such as Gresham Primary School, frame and door mastic can be programmed for the holidays.
Comparing quotes
- Whether their applicators hold CSCS cards
- The terms of the workmanship guarantee
- How the joint faces will be prepared and primed
- Their approach to joint depth and backing
Cost factors for mastic joints
A fixed quote reflects the actual work. It allows for:
- Distance, for remote addresses
- How much existing material needs removing
- Whether the work must be split into stages
- The site’s rules and procedures
The work involved drives the cost: stripping out, preparation, sealing, access and phasing. Call for a fixed quote.
What we need to price the job
However big the job, the same details help:
- Clear photographs of the problem areas
- Rough lengths or quantities, or drawings if you have them
- Whether the building will be occupied during the work
- Specification clauses that apply
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.
Doing it in-house
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
What we can’t put right
Not every problem is a sealant problem, and we’re upfront when that’s the case. It won’t fix:
- Substrate edges that need repairing first
- Water coming in from the roof or rainwater goods
- Asbestos-containing sealant, which we don’t remove
Not sure which it is? You can ring 01277 525 020 or email a schedule or drawings and we’ll tell you honestly before you book.
Where we work in Sanderstead
- Communal entrances and stairwells
- Window and door perimeters on blocks
- Shopfronts below residential blocks
- Balcony and threshold joints
- Communal kitchens and washrooms
- External wall and movement joints
From enquiry to sign-off
At the end of each section, we remove the tape, clean down and inspect every joint, ready for your sign-off. Where the sealant needs time to cure before use, we tell you and sign the area. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- We inspect each building and record the joints that have failed.
- You get a fixed quote, per block or for the whole programme.
- Dates and areas are agreed so occupiers can be told.
- 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.
Preparing the site
- Tell us what induction or permit system the site runs
- Point out parking and an unloading spot
- Tell us your opening times and when work is allowed
Get a fixed quote
Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photographs and a few notes.