Greater London · England
External Mastic in Pollards Hill
External mastic across Pollards Hill and nearby, with old sealant always removed completely and a 12-month guarantee.
- Sealant that has lost its bond to the brick or render
- Old sealant gone brittle and cracked
- Water getting into walls through failed joints
External mastic in Pollards Hill, done properly
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We strip the joint back and start again. If you are dealing with joints pointed up with cement by mistake and leaking joints around cladding and façade panels, we can put it right.
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 Pollards Hill, check the lease for who looks after the outside.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Where
- Pollards Hill (CR7, SW16, SE19)
- Region
- Greater London
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
The process
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a handful of joints, longer for a whole elevation. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Keep children and pets away from the work area
- Clear the area around the work
- Mention any sign-in or site rules at work premises
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Advice
Nearby places to Pollards Hill
More services for Pollards Hill
Work for landlords, hotels and businesses
Landlords and letting agents in Pollards Hill can book us as well as householders. Resealing between tenancies keeps a property looking cared for.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
What sealant work cannot fix
We will always be straight with you, so here’s what sealant can’t fix:
- Structural movement, which needs a surveyor or engineer
- Walls that need new movement joints cut into them
- Rising or penetrating damp from elsewhere in the wall
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly.
Surfaces we seal
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
- Concrete & block
- Façade panels
- Render & cladding joints
Pollards Hill buildings and the weather
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Kingswood House (about 1.9 miles north-east) nearby, there’s older building stock in the area around Pollards Hill as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Homes close to St Oswald include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain. Schools such as Kensington Avenue Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing. Rented homes near Norbury station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
Pollards Hill is about 1 mile north of Thornton Heath, in Greater London. Homes, rented property, offices and hotels in Pollards Hill is covered for external mastic. The work is guaranteed for a year. We cover 764 towns and villages across Greater London, from the larger towns to small villages. For nearby work, see our London page (6 miles or so).
We work across CR7, SW16 and SE19 for external mastic. That includes homes and businesses on Green Lane, Croft Road and Downs Road. We also cover the places around Pollards Hill: Norbury (1 mile north), Thornton Heath (1 mile south), Streatham (2 miles north-west), Streatham Park (2 miles north-west) and Mitcham (2 miles west). Further out, we also cover London (6 miles north), City of Westminster (8 miles north), Marylebone (8 miles north), Kensington (7 miles north-west), St Pancras (8 miles north) and Shoreditch (8 miles north).
Landmarks near Pollards Hill
We work in homes and buildings around Norbury Manor Business and Enterprise College for Girls, Silburn Reid and The Moon Under Water pub and the streets around them. Pollards Hill’s nearest station is Norbury station, roughly 0.6 miles west. A little further out are Crystal Palace Museum (1.5 miles north-east) and Croydon University Hospital (1.3 miles south). Green spaces nearby include Knight's Hill and Biggin Wood.
DIY sealant or a professional job?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
FAQs for Pollards Hill
I let a flat near Norbury station. Can you help?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Is Pollards Hill in your area for external mastic?
Yes, Pollards Hill is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job.
Is there a guarantee?
Yes. All our work carries a one-year guarantee.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Are you insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
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. Bigger jobs take longer, and we will tell you how long to expect.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
How do I get a quote for external mastic in Pollards Hill?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Quotes for external mastic in Pollards Hill
We quote each job individually. This is what makes a difference:
- Whether old sealant or filler has to be cut out
- The type of sealant required
- The size of the job
- How easy the joints are to reach
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Call for a quick quote and we’ll explain what it covers.
Helping us quote
To help us quote quickly, let us know:
- The rough size of the job
- Where the property is
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll take it from there.
Different surfaces, different methods
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. We reseal them with an exterior sealant suited to the material.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. That movement goes into the joint, so the sealant in it must stay soft and stretchy.
Leave it or put it right?
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and doesn’t last so it’s worth doing right. In a London flat, a failed joint rarely stays your problem alone: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you’re unsure, call 0345 464 0079 or send us an email for an honest opinion and a quote.
What you get with us
- Rated 4.9 stars on Google
- Old sealant always removed completely
- Over 20 years’ experience
- Sealant colour chosen to suit