Greater London · England
External Mastic in Paddington
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Paddington and across Greater London. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Rigid filler in a joint that should flex
- Leaking joints around cladding and façade panels
- Plants rooting in failed movement joints
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
About our external mastic in Paddington
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two. We work on render & cladding joints, brickwork movement joints and concrete & block, and people most often call us about movement joints filled with mortar instead of sealant and sealant pulling away from one side of the joint.
Working on the outside of a London home means planning access: shared paths, upper floors and parking. For a home in Paddington, tell us how high the joints are and how to reach the back of the building.
You’re covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or drop us an email.
- Where
- Paddington (W2, W1H, W1U)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Do you need external mastic in Paddington?
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
Signs it’s time to call us include:
- Sealant pulling away from one side of the joint
- Failed sealant between panels on a façade
- Movement joints filled with mortar instead of sealant
- Gaps where render, brick and frames meet
Schools such as International Community School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Before booking anyone
- Which sealant they’ll use, and why
- What insurance they hold
- What the quote includes, VAT included or not
- How the joint is cleaned and prepared
Nearby places to Paddington
What else we do in Paddington
Outside joints around Paddington
London terraces and converted houses often share gutters, downpipes and walls, so it’s worth agreeing who is responsible before work starts. Historic houses like Winfield House (about 1 mile north) are a reminder that the area around Paddington has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
For landlords with property near London Paddington station, outside joints that have cracked can let damp into a rental, so check them between lets. Paddington is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Paddington is about 1 mile west of City of Westminster, in Greater London. Whether you are in the middle of Paddington or further out, we cover external mastic for every kind of property, from flats and houses to offices and hotels. We cover 764 towns and villages across Greater London, from the larger towns to small villages.
Here we cover the W2, W1H and W1U postcode area for external mastic. If you need external mastic at a property on Harrow Road, Craven Road and Harbet Road or a nearby road, our applicators can take on the job. Paddington sits on or near the A5 and A40. Neighbouring places we cover for external mastic include Paddington Green (1 mile north-west), Hyde Park Estate (1 mile south-east), Connaught Village (1 mile south-east), Tyburn (1 mile south-east) and Little Venice (1 mile north-west). Larger places within reach include London (4 miles east), Shoreditch (4 miles east), Walthamstow (8 miles north-east), Hoxton (4 miles east), Whitechapel (4 miles east) and Ruislip (11 miles west).
Near you in Paddington
Locally, jobs take us to homes and businesses close to Royal Society of Medicine Library, Fountains Abbey pub and Royal Parks of London and the streets around them. You’ll also find North Westminster Community School (less than half a mile north-east) and Hampden Gurney CofE Primary School (within half a mile east). There’s a railway station in Paddington itself: London Paddington station. Well-known places in the area include Harrods (1.3 miles south) and London Toy & Model Museum (0.5 miles south-west). The countryside around Paddington includes Greville Place nature reserve and The Long Water.
Quotes for external mastic in Paddington
Your quote is based on your job. We take into account:
- Whether the work is at height
- The number of rooms or windows
- Any working-time requirements on site
- Whether old sealant or filler has to be cut out
The cost depends on how much there is to do, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
Helping us quote
To help us quote quickly, let us know:
- If it’s domestic, commercial or a hotel
- Pictures of the joints, sent by email
- The problem you’ve noticed
- How many joints, rooms or windows are involved
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved and give you a clear quote.
Your questions about external mastic in Paddington
Is Paddington in your area for external mastic?
Yes, Paddington 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.
Is parking a problem for a job in Paddington?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Is the work guaranteed?
Yes, always. There’s a 12-month guarantee on every job, large or small.
Will the new joint stand out?
We aim for a joint that suits the wall rather than one that jumps out. We’ll talk through colour options before we start, matched as closely as the range allows.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
How much does external mastic cost in Paddington?
It depends on the job, so we quote each one individually. For a quick quote, call 0345 464 0079 or email us with a short description of the job.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
How it works
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours to a few days, depending on the length of joint and the access. In Paddington, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Keep children and pets away from the work area
- Let us know about parking restrictions
- Mention any sign-in or site rules at work premises
Getting a quote
To get a quote, phone 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before any work starts.
Advice
Why act early in Paddington
A failed movement joint lets water into the wall. Resealing early keeps the job to the joint itself, rather than the wall around it. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Dealing with it early is far simpler for homes in Paddington.
Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you’re unsure, ring 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why choose Mr Mastic in Paddington
- Neat joints and a tidy finish
- White, clear, grey or coloured to suit, where the product allows
- A 12-month guarantee on all work
- Sealant colour chosen to suit
See what affects the cost and our reviews.
What sealant work can’t fix
Before booking, it’s worth knowing the limits too:
- Movement that is more than a sealant joint can take
- Cracked brickwork or render that needs a builder or plasterer
- Render that’s blown, hollow or coming away
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think before you book.
Surfaces we seal
- Copings & trims
- Render & cladding joints
- Concrete & block
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
Keeping the joints in good condition
Looking after new joints is easy:
- Deal with leaking gutters that soak the joints below
- Look over the joints every year, ideally after winter
- Clear growth from the base of walls and joints
- Avoid pressure-washing directly into sealant joints
Don’t paint over the new sealant unless we have said the product is paintable. Paint can crack on a flexible joint, and paint can crack as the joint moves.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.