Greater London · England
Commercial sealant contractors in CR7
Sealant work for contractors, FMs and building owners across CR7, covering Thornton Heath, Norbury and Pollards Hill, with a fixed quote before we start.
Need sealant work in CR7?
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Towns and villages in CR7
What we do in CR7
- Expansion and movement joint sealing
- Commercial sealant contractors
- Fire-rated sealing and fire stopping
- Construction and new-build mastic
- Industrial and floor joint sealing
- Commercial washroom and wet-area sealing
- Coloured and colour-matched sealant
- Facade and window perimeter sealing
- Mastic sealing for building owners and managing agents
- Every service
Tell us what needs doing and your postcode and we’ll come back with a price: phone 01277 525 020 or send details through our quote form.
Our commercial sealant contractors service in CR7
A reseal stands or falls on the preparation underneath it. Old silicone gives new sealant nothing to grip, so every trace of it is removed, then both faces are cleaned back to sound, dry material with no dust or grease on them. Where the sealant maker specifies a primer for that substrate, it goes on before the new bead, and a backing rod limits the depth to give the sealant room to work. Most enquiries involve leaks that seem to come through a sealant line and weathered facade sealant that no longer flexes, across kitchen worktops and splashbacks, window and door perimeters and movement joints in walls and floors.
When we get to site, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before any cutting starts, with the work itself usually taking anything from part of a day on a short run of joints to several weeks on a large phased package.
- First, details come to us: photos, drawings or a schedule of the areas, and a site visit is booked where it helps.
- The failure is diagnosed and a fixed quote issued for the work agreed.
- Before anything is cut out, we agree access, timings and sequence.
- The failed bead is removed and the joint faces cleaned until they’re sound and dry.
- The depth is set, primer is used where the maker calls for it, and the fresh bead is applied and tooled.
- Finished joints are checked with you and handed over with our 12-month guarantee.
Pricing in CR7
Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you will have a fixed figure to work with.
Why appoint us
- Constructionline member for supplier checks
- One phone line for London, the South East and Scotland
- Our applicators hold CSCS cards
- Sealing commercial buildings since 2005
Getting a fixed quote
The quickest route to a quote is a few photos and the site postcode. Upload them with the quote form, or call 01277 525 020 or email a schedule or drawings to discuss it first.
Around Thornton Heath
Around Thornton Heath, our work takes us to commercial buildings near Norbury Manor Business and Enterprise College for Girls, Grangewood Park and The Archbishop Lanfranc School, among other places. Nearby too are Prince George pub (0.7 miles east), Winterbourne Junior Girls' School (under half a mile west) and Church of St Stephen (under half a mile west). Thornton Heath has its own railway station: Thornton Heath station. Other landmarks nearby include Centrale Croydon (1.7 miles south) and Croydon University Hospital (0.7 miles south). For a walk, there’s Biggin Wood and Duppas Hill.
Where commercial joints are in CR7
The commercial stock in CR7 mixes older town-centre buildings with newer offices and units, in places such as Thornton Heath, Broad Green and Norbury and beyond. Surfaces decide the sealant, from masonry to powder-coated frames and shop-fit panels.
London and the South East are among the drier parts of the UK, but external sealing in CR7 still needs a dry joint and the right temperature, and damp or frosty mornings can hold it up.
Thornton Heath: Units at places like Whitgift Centre (to the south of Thornton Heath) are refitted as brands change, and the joints have to suit each new scheme. On estates like Thornton Road Industrial Estate, which lies south-west of Thornton Heath, the office and welfare end of each unit has its own sealant to maintain.
Why act early?
Some low prices are low because nothing gets cut out. New sealant laid on old silicone has nothing to bond to, so it peels. Our prices always include removal of the failed bead and full joint preparation, because that’s what makes the new bead last.
Comparing quotes
- Are they CHAS accredited or on Constructionline?
- Will CSCS-carded applicators be on site?
- Can the work be phased to keep areas open?
- Proof of insurance
After the work
Your facilities or cleaning team can help the joints last. Pass these on to them:
- On pre-2000 buildings, share the asbestos information before work starts
- Note dates and locations of sealant work for future planning
- Brief cleaning contractors to avoid scourers and blades on sealant
- Don’t let cleaning or traffic back on before the cure time is up
In washrooms and kitchens, extraction makes a real difference to sealant life. Extraction that isn’t working keeps the joints wet. It’s worth having fans checked while the sealant is fresh.
Sealant rarely fails all at once across a building. The first failures are often a warning about the rest so the whole run is worth inspecting. We will tell you which sealant joints need doing first and which can wait.
When it isn’t the sealant
Before quoting, we check that sealant is the right answer. It won’t put right:
- Roof leaks that only look like a joint problem
- Leaks from pipework, wastes or valves (that’s plumbing)
- Broken glass or blown double-glazed units
General trades versus a specialist
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
Different surfaces, different methods
Shop fronts and retail fit-outs
In retail, sealant is on show. Joints around counters, displays and shopfront frames have to look tidy as well as seal. Colour options are confirmed with the quote.
Fire-rated seals where specified
Fire-rated sealant is only one type of fire-stopping product. Other products, such as collars, wraps and batts, are specified for different services.
Questions about CR7
Do you work for facilities managers and managing agents?
Yes. You send the details, we return a fixed quote, and the job is done and signed off.
Do you hold CHAS accreditation?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member.
Which site documents can you send us?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We hold CHAS accreditation and Constructionline membership and carry five million pounds of public liability insurance.
Will you just go over the old sealant?
No. Sealing over old material is one of the classic causes of early joint failure, so it all comes out first.
Is it OK to apply fresh sealant over existing beads?
Every scrap of failed sealant is removed before the new bead goes on. Sealing over traps water and lifts once the joint moves and isn’t worth paying for.
Does commercial sealant work come with a guarantee?
Our workmanship on each job is backed by a 12-month guarantee. We’re fully insured for public liability as well.
Do you work in CR7?
Yes. We take on work across CR7.