Greater London · England
Commercial sealant contractors in CR2
Our applicators cover all of the CR2 postcode district, including South Croydon, Selsdon and Sanderstead. Failed sealant is always cut out completely, with a 12-month guarantee.
Sealant work in CR2
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Towns and villages in CR2
- South Croydon
- Selsdon
- Sanderstead
- Croydon
- Purley
- Waddon
- Forestdale
- Kenley
- Riddlesdown
- Hamsey Green
- Addington
- Coombe
What we do in CR2
- Commercial sealant contractors
- Expansion and movement joint sealing
- Mastic sealing for building owners and managing agents
- Facade and window perimeter sealing
- Coloured and colour-matched sealant
- Industrial and floor joint sealing
- Construction and new-build mastic
- Fire-rated sealing and fire stopping
- Commercial washroom and wet-area sealing
- See all services
Tell us what needs doing and your postcode and we’ll come back with a price: call the office on 01277 525 020 or use the quote form.
Our commercial sealant contractors service in CR2
On a commercial site, sealant turns up in more places than people expect: washroom fittings, kitchen worktops, window boards, partition heads and the line where floors meet walls. Outside, it closes facade joints, frame perimeters and movement joints against the weather. We deal with internal and external sealant joints alike, picking the product for each location rather than one tube for everything. The enquiries we see most involve leaks that seem to come through a sealant line and messy, uneven beads from earlier work that let the building down, on washrooms and tea points, window and door perimeters and kitchen worktops and splashbacks.
When we get to site, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, and the work typically takes a few hours to several days on most single sites, depending on joint lengths and access.
- We begin with whatever information you have, whether that’s photographs, a drawing or a list of locations, or we arrange a site visit.
- The failure is diagnosed and a fixed quote issued for the work agreed.
- Site hours, access windows and the order of areas are agreed before we start.
- We strip the failed bead and prepare both faces of the joint.
- We fit backing to the right depth, prime where specified and lay the new bead.
- We walk the completed areas with you and sign them off under the 12-month guarantee.
How we quote
Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.
Why choose Mastic Doctor
- CHAS accredited
- Work to your specification and the manufacturer’s guidance
- One phone line for London, the South East and Scotland
- Our applicators hold CSCS cards
Ask for 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. Smaller jobs need nothing more than photos and a few notes.
Landmarks near South Croydon
Locally, jobs take us to sites close to Rutherford School, Purley Oaks Primary School and Duppas Hill, among other places. Also close by are Harris Academy Purley (0.6 miles west), Church of St Augustine (under half a mile west) and The Purley Arms (less than half a mile south-west). South Croydon has its own railway station: Sanderstead station. A little further out are Purley War Memorial Hospital (1.2 miles south-west) and Croydon Airport Visitor Centre (1 mile west). For a walk, there’s Roundshaw Downs and Duppas Hill.
Commercial premises across CR2
The commercial stock in CR2 mixes older town-centre buildings with newer offices and units, in places such as Croydon, Purley and Waddon and beyond. Each building needs the right product for its surfaces, from stone and brick to coated aluminium and laminate.
All of Greater London is inside the ULEZ, and much of the South East is within easy reach of the capital, and every job in CR2 starts with access, parking and site rules.
South Croydon: If you have premises on more than one site, say at Capital Business Centre and Twin Bridges Business Park, one contractor and one quote can cover both. Offices and shops close to stations such as Sanderstead station (under half a mile south-east of South Croydon) tend to be busy all day, so sealant work is planned around opening hours.
Why it fails
External sealant takes a steady beating from the weather. Sunny elevations dry the surface out and exposed ones take driving rain, so beads chalk, stiffen and lose their stretch. A hardened bead can’t follow the building any more.
It’s worth sending us details if you spot any of the following:
- Leaks that seem to come through a sealant line
- Hardened, chalky sealant on south-facing or exposed elevations
- Gaps behind commercial kitchen worktops and sinks
- Expansion joints with the sealant torn out
Why act early?
Putting off a reseal normally moves the cost rather than avoiding it. Once water gets behind the seal, finishes and ceilings underneath are next, which brings decorators and flooring contractors into the repair. Dealing with it while the damage stops at the bead is the cheaper route.
Comparing quotes
- What level of public liability insurance do they hold?
- Health and safety accreditation such as CHAS
- How long is the guarantee, and what does it include?
- How joint depth will be controlled
Different surfaces, different methods
Facade and cladding joints
Facade joints move every day as panels warm and cool. The product has to suit the movement, and the depth has to be controlled with backing. We confirm the access in place before we quote.
Movement joints in walls and floors
Movement joints in walls and floors let the structure expand and contract. When the seal fails, debris gets in and the joint stops working. The joints are resealed using a sealant matched to the movement and any traffic.
Aftercare for building managers
For the best life from the joints:
- Ask cleaners to use a soft cloth and mild cleaner on sealant
- Respect the cure time before reopening an area
- Keep a record of which joints were resealed and when
- On pre-2000 buildings, share the asbestos information before work starts
Add the resealed joints to your planned maintenance inspections. Regular checks pick up small failures before they become leaks, especially on exposed elevations and in washrooms. Should something look amiss, you can call the office on 01277 525 020 or email the details over and send a picture.
A failed external joint lets water in every time it rains. Behind a panel or frame, that water can sit unseen for a long time. Resealing early keeps the problem in the sealant and out of the building.
When something else is needed
Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. These need a different solution:
- A failed roof covering or waterproofing membrane
- Walls or slabs moving more than any sealant can take
- Removing asbestos-containing materials (a licensed or specialist contractor’s job)
Common questions from CR2 clients
Do you seal on top of existing sealant?
No. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.
Who decides which product is used?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
How soon can the area be used again?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.
Does commercial sealant work come with a guarantee?
Each job sits under our 12-month guarantee. Keeping joints clean and inspected helps them last well beyond that.
How many days will you need on site?
That varies with the scale of the job, though a typical visit normally takes anything from part of a day on a short run of joints to several weeks on a large phased package. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.
Do your applicators hold CSCS cards?
Yes. We use CSCS-carded applicators, as many construction sites ask for.
When is resealing likely to be due?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.