Kent · England
External & façade joints in Green Street Green, Kent
Sealing brickwork movement joints, render, cladding and façade joints in Green Street Green, with a one-year guarantee on every job. Ask us for a quote.
- Failed sealant between panels on a façade
- Joints where the bead has come unstuck
- Brick movement joints where the sealant has split
External mastic in Green Street Green
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement where a rigid filler would soon crack. If you are dealing with failed seals between different materials and leaking joints around cladding and façade panels, we can put it right, whatever the surface.
Somewhere as small as Green Street Green, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
Every job comes with our 12-month guarantee.
- Where
- Green Street Green (DA2)
- Region
- Kent
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
For landlords and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will quote.
We also work for property managers and facilities teams. Several sites can be quoted together.
Aftercare tips
Aftercare is simple, and it makes a real difference:
- Keep water from gutters off the wall
- Make sure movement joints are not pointed over
- Walk round the building once a year and look at the joints
- Clear growth from the base of walls and joints
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
Once a joint can’t move, the wall finds another way, usually as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
Walls and rooflines in Green Street Green
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Letting a property close to Longfield station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Green Street Green is about 3 miles south-east of Dartford, in Kent. If you need external mastic in Green Street Green, please call 0345 464 0079 or send us an email for a quick quote. We are based in Crawley and cover Kent, Green Street Green included. 922 places in Kent are on our list, from the larger towns to small villages. For nearby work, see our London page.
We work across the DA2 postcode area for external mastic and the streets around it. Nearby, we also carry out external mastic in Grubb Street (1 mile south), Westwood (1 mile east), St Margarets (1 mile west), Bean (1 mile north) and Darenth (1 mile north-west). Larger places within reach include Maidstone (15 miles south-east), Dartford (3 miles north-west), Sevenoaks (10 miles south-west), Gravesend (5 miles east), Tonbridge (15 miles south) and Northfleet (3 miles north-east).
What’s near Green Street Green
Typical jobs here are in homes near Beacon Wood Country Park, Longfield Academy and The Black Horse pub, among other places. The closest station to Green Street Green is Longfield station, about 1.5 miles south-east of the centre. Well-known places in the area include Bluewater (1.8 miles north) and Stone Castle (2.1 miles north). For a walk, there’s Wansunt Pit and Sawyers Lake.
Common problems we fix in Green Street Green
A lot of failed joints come down to preparation: dusty or wet faces, no primer where one was needed, or old sealant left in. The sealant never bonds properly.
Keep an eye out for any of the following:
- Joints with sealant missing in places
- Damp patches traced to an open external joint
- Weeds or debris growing in open joints
- Panel joints letting water in
For site and facilities teams at buildings such as Greenlands Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Comparing quotes
- How much experience the applicator has
- What product goes in the joint
- What happens if the job turns out different
- Whether VAT is included
What sealant work cannot fix
It helps to know what we can’t do too:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Render that’s blown, hollow or coming away
- Cracked brickwork or render that needs a builder or plasterer
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think before booking.
Joints and surfaces we work on
- Façade panels
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
- Concrete & block
- Render & cladding joints
What affects the cost of external mastic
Every job gets its own quote. These are the things that affect it:
- Whether the work is at height
- How many areas need sealing
- Working hours on commercial sites
- The product the joint needs
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are not sure whether it needs doing, ring 0345 464 0079 or email us for an honest opinion and a quote.
What to tell us for a quote
When you call or email, it’s useful to know:
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
- Where the job is, and your postcode
- Photos by email, if that’s easy
Want a quote for external mastic? Please ring 0345 464 0079 or drop us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Common questions in Green Street Green
I let a flat near Longfield station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Is Green Street Green within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Which products do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference.
When will the joints need doing again?
There’s no fixed answer: joints on exposed walls or with a lot of movement age sooner. Check them each year and reseal when they split or harden. Every job carries our one-year guarantee.
Can I do it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
Can I add another job to the visit?
Yes. Several rooms, windows or areas can go on one quote.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
How long does the job take?
Typically it takes a few hours to a few days, depending on the length of joint and the access. Larger jobs naturally take longer, and we will say how long yours will take.
How the visit works
Once we are on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes anything from a few hours to several days, depending on the building. For a village or hamlet like Green Street Green, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- For business premises, tell us about site rules or sign-in
- Let us know about parking restrictions
Get a quote
Getting a quote is simple: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand.
Advice
What the job involves on each surface
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. We cut out the old sealant and reseal with a product suited to both surfaces.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. That movement goes into the joint, so its sealant has to stay flexible.