Downe facade sealing
Sealant work in Downe for main contractors, managing agents and facilities managers: facade joint and window perimeter sealing on commercial buildings, quoted at a fixed price.
- Cladding panel joints that have opened up
- Perimeter sealant that has split or peeled away
- Failed seals around shopfront and entrance frames
Facade sealing for Downe sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Facade sealing in Downe, done properly
Facade joints are the line of defence between the weather and the building fabric. When a perimeter bead splits or peels, water finds its way behind frames and into the structure. We remove failed sealant and install a new bead chosen for the joint and how far it moves. We work on coping and flashing joints, cladding panel joints and perimeter joints where frames meet the structure, and the failures we are asked to look at most are new sealant peeling off old mastic and perimeter sealant that has split or peeled away. Searching for sealant specialists in Downe? We’ve been sealing commercial buildings since 2005.
Every London site, Downe included, is inside the ULEZ, which applies to deliveries and contractors’ vans alike. Alongside that, sites usually need booked deliveries and a plan for where materials go.
A 12-month guarantee applies to all our work in Greater London. If an installation problem shows up, give us a call on 01277 525 020 or send details through our quote form and we will arrange a return visit.
- Where
- Downe (BR6)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Quotes
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
Common questions from Downe clients
Does your area include sites such as Glebe Farm Business Park, near Downe?
Yes. Our area takes in Downe and its surroundings, with estates and business parks such as Glebe Farm Business Park included. To start, just call 01277 525 020 or email a schedule or drawings with the unit, the joints involved and your access times.
Is a hospital such as Princess Royal University Hospital somewhere you can work?
Yes. We work in healthcare settings as well as offices and schools. We follow the site’s permits, sign-in and infection-control procedures in every area.
Is your workmanship covered by a guarantee?
Yes. It runs for twelve months and covers how we prepared and sealed the joints, though not damage or work by other trades.
What type of sealant goes on window perimeters?
The product follows the joint’s movement, the surfaces and the specification. BS EN 15651 Parts 1 and 2 cover facade and glazing sealants, and specifications often name them, and we work to what is specified.
Will your applicators have CSCS cards?
Yes. Our applicators hold CSCS cards, which many sites require.
Who decides which product is used?
A specification, where there is one, decides it. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
Are you insured?
Yes. We’re fully insured, and the certificate can go with your quote.
Contractors’ notes for Downe
Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Downe. Delivery slots and scarce storage shape how and when the mastic goes in.
School extensions, at buildings such as Downe Primary School, usually run to the summer holidays, mastic included. New units and refits on sites such as Glebe Farm Business Park (1.1 miles north-west of Downe) need their panel and perimeter joints sealed to the specification. On a healthcare site such as Princess Royal University Hospital, which lies north of Downe, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.
Downe is about 4 miles south-west of Orpington, in Greater London. Anywhere in BR6, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. 764 places across Greater London fall within our area, Downe among them. Our London page has more on work in that area (13 miles or so).
Anyone looking for facade sealing in BR6 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Buildings on High Street, North End Lane and Belle Vue Road are within our area for facade joints. We also cover Farthing Street (1 mile north-west), Hazelwood (1 mile east), Luxted (1 mile south), Leaves Green (1 mile west) and Single Street (2 miles south). Further afield, our area takes in London (13 miles north-west), City of Westminster (15 miles north-west), Marylebone (15 miles north-west), St Pancras (15 miles north-west), Shoreditch (14 miles north-west) and Hoxton (15 miles north-west).
Local landmarks in Downe
Around Downe, our work takes us to commercial buildings near The Queens Head pub, Charles Darwin School and South Park and the streets around them. The nearest railway station is Chelsfield station, about 2.6 miles north-east. Other landmarks nearby include Crofton Roman Villa (2.7 miles north-east) and Princess Royal University Hospital (1.8 miles north). The countryside around Downe includes Downe Bank Nature Reserve and Betsom's Hill.
How the job changes by surface
Coping and flashing joints
Sometimes the coping or flashing itself has failed. We tell you if the fix is a roofing or metalwork job rather than a reseal.
Precast concrete panels
Precast panel joints have to absorb thermal and structural movement. A sealant of the right movement class goes in over backing rod.
For managing agents and facilities managers
If you look after buildings for someone else, you need clear quotes and clear reporting. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.
Hotels, schools, healthcare sites, offices and retail units 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.
When to bring in a specialist
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Towns and villages near Downe
More services for Downe
Cost factors for facade joints
The price varies from site to site. Expect it to depend on:
- Removal of failed or old sealant
- Access and working height
- Site requirements such as inductions and permits
- Location, for remote and island sites
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
What to include in your enquiry
Whether it’s one area or a whole building, the same details help:
- Access details, including height
- Rough lengths or quantities, or drawings if you have them
- Where the site is, with the postcode
- Whether an asbestos survey exists
Photos, drawings or a schedule of the joints and a fixed quote comes back to you. Where a site visit makes more sense, we’ll arrange one.
Honest limits
Honesty saves time and money. Fresh joints won’t solve:
- Work on the window or framing system itself
- Specialist high-level access methods
- Render or concrete edges that have broken away
If in doubt, call the office on 01277 525 020 or use the quote form and we’ll say what we think before you book.
Surfaces we seal
- Shopfront frames
- Stone and brick facade joints
- Perimeter joints where frames meet the structure
- Window and door perimeters
- Cladding panel joints
- Coping and flashing joints
Diagnose, treat, sign off
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, 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’re on site, so we agree zones and timings with the building or facilities manager. Areas are handed back as each section is finished.
- We start with photographs, drawings or a visit to see the joints and agree access.
- We confirm the joint type, movement and the specified product.
- The existing bead comes out in full and both faces cleaned back.
- Primer is applied where the maker specifies it.
- Backing rod is fitted and the new sealant gunned in and tooled.
- We go over the completed work with you before leaving.
Getting the site ready
- For older buildings, check the asbestos register before work
- Confirm the product named in the specification
- Move anything stored against the joints
Ask for a quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call 01277 525 020 or email drawings and photos with what you know.