Greater London · England
North Ockendon External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in North Ockendon. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Moss and dirt in joints with no sealant left
- Panel joints letting water in
- Sealant that has lost its bond to the brick or render
Landlords, agents and businesses in North Ockendon
For anyone letting property in or around North Ockendon, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will quote.
External mastic for homes and businesses in North Ockendon
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. We’re often asked to deal with joints with sealant missing in places and sealant pulling away from one side of the joint, on façade panels, brickwork movement joints and concrete & block.
Newer London blocks are built with movement joints in brick and render, and with cladding joints sealed with mastic. Older terraces have their own weak points: gutter joints, roofline trims and the joint where an extension meets the original wall.
All our work is covered by a one-year guarantee.
- Where
- North Ockendon (RM14)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to North Ockendon
Other services in North Ockendon
How the job changes by surface
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so its sealant has to stay flexible.
Render joints
Render has movement joints and stop beads that need sealing. We reseal them with a flexible exterior sealant that suits the render colour.
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Movement that is more than a sealant joint can take
- Rising or penetrating damp from elsewhere in the wall
- Cracked brickwork or render that needs a builder or plasterer
If you are not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Where we work in North Ockendon
- Joints between brick and frames
- Façade panels
- Copings & trims
- Concrete & block
- Brickwork movement joints
- Render & cladding joints
Why act early in North Ockendon
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. Too stiff a sealant can pull at the edges and break them. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in North Ockendon, the repair is bigger than a sealant job.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, call 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why book with us
- Any old sealant cut out fully, not covered over
- Anti-fungal sanitary silicone in wet areas
- A sealant colour to suit the surroundings
- A choice of colours where the product allows
Take a look at how sealant jobs are priced or customer reviews.
Walls and rooflines in North Ockendon
With historic houses such as Hare Hall (about 4.5 miles north-west) nearby, there’s older building stock in the area around North Ockendon as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Rented homes near Ockendon station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets. As a London address, North Ockendon can be tricky for parking: let us know about parking bays, permits or a driveway.
North Ockendon is about 3 miles east of Hornchurch, in Greater London. Anywhere in RM14, we can carry out external mastic at your property. Our Greater London coverage runs to 764 places, and North Ockendon is one of them. Our Chelmsford page covers work nearby, about 16 miles away.
We work across RM14 for external mastic and the streets around it. If you are just outside North Ockendon, we cover Puddle Dock (1 mile north), Cranham (2 miles north-west), Upminster (2 miles north-west), South Ockendon (2 miles south) and Upminster Bridge (2 miles north-west). Further out, we also cover Walthamstow (14 miles west), Whitechapel (15 miles west), Orpington (14 miles south-west), Plaistow (11 miles west), Leyton (13 miles west) and New Cross (15 miles west).
Landmarks near North Ockendon
We work in homes and buildings around Eastbrook School. The closest station to North Ockendon is Ockendon station, about 1.5 miles south. A little further out are Upminster Tithe Barn Museum of Nostalgia (2.1 miles north-west) and St George's Hospital (3 miles west). Green spaces nearby include Cranham Marsh.
How we quote for external mastic
Your quote is based on your job. We look at:
- The number of rooms or windows
- When we can work, for business premises
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Access, such as stairs, a lift or height
- A few pictures by email, if you can
- What the problem is, such as mould, gaps, leaks or cracking
- Roughly how big the job is
We quote each job on its own, so the first step is telling us about yours. Just phone 0345 464 0079 or send us an email with the details and send photos if you have them.
How the visit works
When we arrive, we start by going over the job with you, so you know exactly what we are doing. Surfaces next to the work are protected before any work starts. The work normally takes anything from a few hours to several days, depending on the building. In a London area like North Ockendon, the main things to plan are parking and access: let us know about parking, the floor we will be working on and any lift or shared entrance.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Mention any parking rules near the property
- Mention any tricky access
Ask for a quote
Need a quote? Please call 0345 464 0079 or send us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
FAQs for North Ockendon
Can parking be tricky for a visit in North Ockendon?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Is North Ockendon in your area for external mastic?
Yes. Our work covers London and the South East, and North Ockendon is part of that. Just phone 0345 464 0079 or email us with a few details of the job, and we will send you a clear quote.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. Our applicators cover North Ockendon, along with the rest of our area.
Can I do it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Why do you put foam in the joint first?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides so it can flex with the joint.
How long will you be here?
Typically it takes anything from a few hours to several days, depending on the building. Bigger jobs take longer, and we’ll say how long yours will take.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you’ll get one quote.
Should I point up the gap in my brickwork?
No. Rigid materials cannot move with the wall. If it has already been filled, we can normally cut it out and reseal it.
Common problems we fix in North Ockendon
Weeds, moss and debris in a joint are a sign the sealant has gone. Roots and dirt hold water against the wall and speed up the damage.
Most people get in touch when they notice something like this:
- Joints with sealant missing in places
- Failed seals between different materials
- Rain getting behind render or cladding at a joint
- Moss and dirt in joints with no sealant left
Homes close to Church of St Mary Magdalene include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Before booking anyone
- Are they insured?
- What the quote includes, VAT included or not
- Whether all the old sealant comes out first
- How the colour is chosen