Old Coulsdon mastic sealing
Need mastic sealing in Old Coulsdon? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.
- Occupiers reporting cold air round windows
- Patchy repairs in mismatched sealant
- Damaged joints in communal entrances and corridors
Mastic sealing for businesses in Old Coulsdon
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
About our mastic sealing in Old Coulsdon
Most buildings come with mastic joints nobody has looked at since handover and it slowly wears out: it sits round windows and doors, along external joints and through communal areas. When it hardens, splits or pulls away, water and draughts follow along with complaints. We work on communal entrances and stairwells, window and door perimeters on blocks and shopfronts below residential blocks, and what we are called in for most is draught complaints from residents or tenants and complaints coming in block by block. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Old Coulsdon is the same: the right product in a properly prepared joint.
London’s ULEZ covers every borough, and parking and loading rules vary street by street. For block-wide work, a place to park and store materials saves time on every visit.
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
- Old Coulsdon (CR5, CR3, CR8)
- Wider area
- Greater London
- Cover
- 12 months on our workmanship
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Surface by surface
Estate-wide resealing programmes
A programme can start with the worst buildings and work down. You get one fixed quote per building or for the whole estate.
Communal areas
Communal entrances, stairwells and corridors have joints at door frames, screens, skirting and floor edges. Tidy, sound joints keep them looking cared for.
Planned mastic for Old Coulsdon portfolios
Old Coulsdon has five care or nursing homes no more than 2 miles away. Care home owners need frame and external mastic kept sound without unsettling residents. For a London block, the agent or landlord usually handles notices to residents and access to flats. We work to your notice and access plan.
For owners of several units at places like Ullswater Industrial Estate, 1.4 miles north-west of Old Coulsdon, one programme can deal with frame and external mastic across the lot. Schools and community buildings such as Keston Primary School need frame and external mastic kept sound like any building.
Old Coulsdon is about 1 mile south-east of Coulsdon, in Greater London. We cover commercial sites throughout Old Coulsdon, whether it’s a single job or part of a planned programme. Our Greater London coverage takes in 764 places, large and small. London is covered too, some 14 miles away.
Work on mastic joints is covered throughout CR5, CR3 and CR8, for business premises of every kind. For a building on Ellis Road, Tollers Lane and Court Avenue or nearby, we can quote for mastic joints. If your building is just outside Old Coulsdon, we cover Coulsdon (1 mile north-west), Chipstead (2 miles west), Purley (2 miles north), Woodcote (2 miles north-west) and Woodmansterne (3 miles west). Further afield, our area takes in London (14 miles north), City of Westminster (15 miles north), Marylebone (15 miles north), Kensington (14 miles north), Whitechapel (15 miles north) and Brompton (14 miles north).
Near you in Old Coulsdon
We work on buildings around Sunnydown School, Dollypers Hill and The Tudor Rose pub and the streets around them. For rail, the closest station is Coulsdon South station, roughly 1.4 miles north-west of the centre. Other landmarks nearby include East Surrey Museum (2 miles south-east) and St Lawrence's Hospital (1.3 miles south-east). Green spaces nearby include Nore Hill and Mercers Lake.
Honest limits
Being straight saves everyone time. New sealant won’t cure:
- Masonry that has broken away beside the joint
- Materials that need asbestos testing before work
- Roof leaks, gutters or failed flashings that aren’t sealant joints
If you’re not sure, just speak to us on 01277 525 020 or send photos by email and we will give you a straight answer.
Where we work in Old Coulsdon
- Window and door perimeters on blocks
- Communal entrances and stairwells
- Shopfronts below residential blocks
- Communal kitchens and washrooms
- Balcony and threshold joints
- External wall and movement joints
Keeping the joints sound
For the best life from the joints:
- Protect low-level joints in entrances
- Make it easy for occupiers to report draughts
- Share your contractor requirements early
- Keep a record of when each building was resealed
Keep records of when each building was resealed. That makes future programmes easier to plan and shows what was done.
Failed mastic often goes unnoticed until heavy rain finds it. Resealing when cracking first shows avoids water damage and saves internal repairs.
Your questions answered
Is Ullswater Industrial Estate, near Old Coulsdon, within your area?
Yes. We cover Old Coulsdon and the area around it, including industrial estates, business parks and retail parks such as Ullswater Industrial Estate. To start, just ring 01277 525 020 or email drawings and photos with the unit, the joints involved and your access times.
Will you work in a care home in Old Coulsdon without moving residents out?
Yes. Care settings are planned area by area, at times agreed with the home. Any site rules, from signing in to infection control, are agreed before we start.
Is Old Coulsdon in your area?
Yes. We take on work across Old Coulsdon, with one number for every area we cover.
Is it fine to apply new sealant on top of old?
No. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.
Do you do block-wide mastic programmes?
Block-wide and estate programmes are common. The quote can be split however suits your budgeting.
What about access for upper-floor joints?
It depends on the building. We agree access with you at quote stage so the fixed quote reflects it.
Which sealant will you use?
Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
Quoting for work in Old Coulsdon
To price the job, we consider:
- Which sealant the job calls for
- The size and state of each joint
- Site requirements such as inductions and permits
- How accessible the joints are
Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits.
Sending details for a quote
The more we know, the firmer the quote. Helpful details to send:
- Drawings or a marked-up plan, if available
- Any dates the work must fit around
- The asbestos register, for older buildings
- Whether the building will be occupied during the work
Pricing a project or setting a maintenance budget? We will quote against your scope and drawings that you can work with. For a chat about it beforehand, ring 01277 525 020 or send details through our quote form.
Our process
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 each bead is tooled to a neat concave finish. Most London premises stay occupied while we are on site, 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.
- The quote is fixed and split as suits you.
- 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.
Before we start on site
- For older buildings, check the asbestos register before work
- Warn occupants and staff about the work
- Share your working hours and any access restrictions
Get a fixed quote
For a fixed quote, speak to us on 01277 525 020 or send details through our quote form, telling us the site location and the nature of the job. You can also send details through our quote form.
Related advice
Do you need mastic sealing in Old Coulsdon?
Poor preparation explains many failed joints. Where the faces weren’t cleaned or primed as specified, the bead peels off one side.
Things that usually lead to an enquiry:
- Complaints coming in block by block
- Patchy repairs in mismatched sealant
- Movement joints with sealant missing
- Mastic failing across several blocks on an estate
Buildings close to stations like Coulsdon South station (to the north-west of Old Coulsdon) are often flats over shops, with frame mastic to keep sound.
Before you book anyone
- How long is the guarantee, and what does it include?
- How joint depth will be controlled
- Is the sealant right for the movement and the substrate?
- How the joint faces will be prepared and primed