Greater London · England
External Mastic in Puddle Dock
External mastic for Puddle Dock, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Cracked joints where brick meets render or frames
- Joints where the bead has come unstuck
- Movement joints filled with mortar instead of sealant
Why act early in Puddle Dock
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. Too stiff a sealant can pull at the edges and break them. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Puddle Dock, the repair is bigger than the sealant job would have been.
Doing several joints on one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why choose Mr Mastic in Puddle Dock
- You choose the colour before work begins
- 12-month guarantee on every job
- Anti-fungal sanitary silicone in wet areas
- Neat joints and a tidy finish
Take a look at our cost guide or customer reviews.
About our external mastic in Puddle Dock
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 mortar or filler would crack. Common call-outs are for failed seals between different materials and hard, crazed mastic that has stopped moving, across façade panels, render & cladding joints and copings & trims.
London’s terraces and conversions often share walls, gutters and downpipes with their neighbours, so one failed joint can cause damp for more than one household. For a flat in Puddle Dock, check the lease for who looks after the outside.
Your job is guaranteed for a year, as with all our work.
- Where
- Puddle Dock (RM14)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in Puddle Dock
Landlords and agents in Puddle Dock can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
The process
On the day, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before any work begins. Most jobs take anything from a few hours to several days, depending on the building. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Puddle Dock. It helps if you can point us to a visitor permit or a bay close to the door.
- 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.
Getting ready for the visit
- Tell us about any water getting in
- Where the joints are inside, avoid wetting them before we arrive
- Keep children and pets away from the work area
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, call 0345 464 0079 or email us.
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External mastic in Puddle Dock: local notes
Historic houses like Hare Hall (about 4.1 miles north-west) are a reminder that the area around Puddle Dock 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. In terraces and conversions, gutters and walls are often shared with the neighbours, so check who is responsible for the outside before booking.
For site and facilities teams at buildings such as The James Oglethorpe Primary School, its movement joints, gutters and trims need looking after like any other building’s. Puddle Dock is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Puddle Dock is about 3 miles north of South Ockendon, in Greater London. We provide external mastic to householders, landlords and businesses in Puddle Dock and nearby. Our area takes in 764 places across Greater London, large and small. You can also see our page for Chelmsford, about 15 miles away.
Here we cover the RM14 postcode area for external mastic. We also cover the places around Puddle Dock: Cranham (1 mile west), North Ockendon (1 mile south), Upminster (2 miles west), Great Warley (2 miles north) and Upminster Bridge (2 miles west). Within a short drive, we also cover Walthamstow (14 miles west), Orpington (15 miles south-west), Plaistow (12 miles west), Leyton (13 miles west), New Cross (15 miles south-west) and Romford (5 miles west).
What’s near Puddle Dock
We work in homes and buildings around Hall Mead School, among other places. The closest station to Puddle Dock is Upminster station, about 1.9 miles west. Other landmarks nearby include Upminster Tithe Barn Museum of Nostalgia (1.7 miles west) and Spire Hartswood Hospital (2.8 miles north). Green spaces nearby include Cranham Brickfields.
Questions from Puddle Dock
Is Puddle Dock in your area for external mastic?
Yes. We work across London and the South East, and Puddle Dock is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job.
Is parking a problem for a job in Puddle Dock?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
What sealant do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We’ll tell you what we are using and why.
Do I have to be there?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Will it make a mess?
Tidy work is part of the job. We protect what’s around the joints, and we clear up when we’re done.
Where do you work from?
We are a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
What’s an expansion joint in brickwork?
Brickwork, render and cladding all move a little, and planned joints take up that movement. It’s closed with backing rod and a flexible sealant.
Why do you put foam in the joint first?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. That way it bonds to the two sides only and can stretch.
When to call us in Puddle Dock
Using the wrong sealant is another common reason. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, and it tears off the sides.
People normally contact us when they notice something like this:
- Cracked joints where brick meets render or frames
- Damp patches traced to an open external joint
- Plants rooting in failed movement joints
- Panel joints letting water in
Letting a property close to Upminster station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
What your quote should include
- How much experience the applicator has
- What happens if they find a problem under the old sealant
- How long the guarantee is
- Whether you can choose the colour
Quotes for external mastic in Puddle Dock
You will get a clear quote before work begins. It takes into account:
- Whether the work is at height
- Mould in or behind the old joints
- The amount of work
- When we can work, for business premises
Leaving a failed joint generally makes the job bigger, not smaller. If you’re unsure, ring 0345 464 0079 or drop us an email 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. Just tell us:
- Where the job is, and your postcode
- How many joints, rooms or windows are involved
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
Need a quote? Please ring 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and give you a clear price before any work starts.
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Should I try it myself first?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
When something else is needed
Before booking, it’s worth knowing the limits:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracked brickwork or render that needs a builder or plasterer
- Loose or hollow render, which needs re-rendering
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
Joints and surfaces we work on
- Façade panels
- Render & cladding joints
- Copings & trims
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames