Greater London · England
External & façade joints in Ladywell, Greater London
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Ladywell and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps where render, brick and frames meet
- Hard, crazed mastic that has stopped moving
- Weeds or debris growing in open joints
About our external mastic in Ladywell
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We take the old material out and do it properly. We work on render & cladding joints, brickwork movement joints and façade panels, and common reasons people get in touch are weathered mastic that no longer stretches and plants rooting in failed movement joints.
In London terraces and converted houses, gutters and walls are often shared with the house next door, so one failed joint can cause damp for more than one household. For a flat in Ladywell, check the lease for who looks after the outside.
Our work is backed for twelve months, in Ladywell and everywhere else we cover.
- Where
- Ladywell (SE13, SE6, SE4)
- Region
- Greater London
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What sealant work cannot fix
Before booking, it’s worth knowing the limits too:
- Loose or hollow render, which needs re-rendering
- Adding movement joints to masonry that has none
- Subsidence or other structural problems
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
Where we work in Ladywell
- Render & cladding joints
- Joints between brick and frames
- Copings & trims
- Façade panels
- Brickwork movement joints
- Concrete & block
Walls and rooflines in Ladywell
London terraces and converted houses often share gutters, downpipes and walls, so check who is responsible for the outside before booking. With historic houses such as Queen's House (about 2 miles north) nearby, there’s older building stock in the area around Ladywell as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
If you look after a building such as St Mary's Lewisham Church of England Primary School, larger buildings have long runs of movement joint that eventually need resealing. In the older streets around Church of St Mary the Virgin, an extension built onto an older house moves differently, and the joint between them takes the strain.
Ladywell is about 1 mile south-east of New Cross, in Greater London. We provide external mastic to householders, landlords and businesses in Ladywell and the surrounding area, as part of our work across Greater London. Our Greater London coverage runs to 764 places, Ladywell among them.
All of SE13, SE6 and SE4 is covered for external mastic, from the main roads to the quietest streets. Whether your property is on Veda Road, Roxley Road and Honley Road or anywhere close by, we can help. Nearby, we also carry out external mastic in Lewisham (1 mile north-east), Crofton Park (1 mile west), Hither Green (1 mile east), Brockley (1 mile west) and Catford (1 mile south). Larger places within reach include London (5 miles north-west), City of Westminster (7 miles north-west), Marylebone (7 miles north-west), Kensington (9 miles west), St Pancras (7 miles north-west) and Shoreditch (6 miles north-west).
Near you in Ladywell
Typical jobs here are in homes near The London & Rye pub, Trinity Church of England School and Ladywell Fields. Ladywell has its own railway station: Ladywell station. Nearby you will also find Greenwich Castle (1.8 miles north) and University Hospital Lewisham (within half a mile north-west). For a walk, there’s Brookmill Road Local Nature Reserve and Knight's Hill.
Why act early in Ladywell
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Why choose Mr Mastic in Ladywell
- Sanitary silicone with an anti-fungal additive in wet areas
- Full insurance on every job
- We agree the colour with you first
- Old sealant always removed completely
Read our cost guide or what customers say.
What affects the cost of external mastic
There’s no set price list, because no two jobs are the same. The quote depends on:
- The size of the job
- Whether old sealant or filler has to be cut out
- When we can work, for business premises
- Any mould that needs treating
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, phone 0345 464 0079 or email us and we’ll give you an honest view and a quote.
What to tell us for a quote
You do not need to know the technical terms. It helps if you can tell us:
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
- How we’d reach the joints
- The problem you’ve noticed
For external mastic in Ladywell, phone 0345 464 0079 or email us. Tell us what the problem is and where, and we will agree the price before any work begins.
Do you need external mastic in Ladywell?
Weeds, moss and debris in a joint are a sign the sealant has gone. Roots and dirt hold water against the wall and make things worse.
If you can see any of these, it’s time to have the joints looked at:
- Hard, crazed mastic that has stopped moving
- Failed seals between different materials
- Water getting into walls through failed joints
- Joints pointed up with cement by mistake
If you let a flat or house near Ladywell station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Questions to ask before booking
- What product goes in the joint
- Which colour the sealant will be
- What the quote includes, VAT included or not
- What happens if they find a problem under the old sealant
How the visit works
You don’t need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the job takes a few hours for a handful of joints, longer for a whole elevation in most cases. In a London area like Ladywell, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Mention if the joints have been sealed before
- Let us know about parking restrictions
- Plan for the work area to be out of bounds to pets and children
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.
Advice
Landlords, agents and businesses in Ladywell
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Different surfaces, different methods
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. We choose the product to suit.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. We reseal them with a low-modulus sealant over backing rod coloured to suit the wall.
Ladywell: your questions answered
Can you help a landlord with a rental near Ladywell station?
Yes, we work for landlords and agents. Just call 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear quote.
Is Ladywell in your area for external mastic?
Yes, Ladywell is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Does someone need to be in?
It depends on the job. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
What do you need from me for a quote?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply phone 0345 464 0079 or send us an email.
How much does external mastic cost in Ladywell?
It depends on the job, so we quote each one individually. For a quick quote, call 0345 464 0079 or send us an email and let us know what needs doing and where.
Do you remove the old sealant?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.