Essex · England
External Mastic in Steward's Green
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Steward's Green and across Essex. Fully insured, ARBOMaster approved and guaranteed for a year.
- Hard, crazed mastic that has stopped moving
- Plants rooting in failed movement joints
- Water getting into walls through failed joints
How to look after the new joints
To keep the joints looking good and working properly:
- Wash walls gently around the sealant
- Act on the first splits you see
- Make sure movement joints aren’t pointed over
- Clear growth from the base of walls and joints
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead and let water in behind.
A joint that has stopped moving pushes the movement elsewhere, often as cracks near the joint. Catch it early and you reduce the risk.
How we handle external mastic in Steward's Green
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. We’re often asked to deal with movement joints with cracked, split or missing sealant and movement joints filled with mortar instead of sealant, across brickwork movement joints, façade panels and render & cladding joints.
Somewhere as small as Steward's Green, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Steward's Green (CM16)
- Wider area
- Essex
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
How the job changes by surface
Cladding and façade panels
Cladding and façade panels are generally separated by sealed joints. We reseal them with a sealant suited to the panel material.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it so the sealant is not too deep.
Signs you need external mastic in Steward's Green
Buildings move more than people expect. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. The sealant in the movement joints takes that strain.
Common reasons people contact us are:
- Rigid filler in a joint that should flex
- Brick movement joints where the sealant has split
- Hard, crazed mastic that has stopped moving
- Leaking joints around cladding and façade panels
Managing a site like Ivy Chimneys Primary School? Then larger buildings have long runs of movement joint that eventually need resealing.
What your quote should include
- What happens if they find a problem under the old sealant
- When the joint can take water or movement
- How long the guarantee is
- How the joint is cleaned and prepared
What affects the cost of external mastic
Every job gets its own quote. This is what makes a difference:
- How much old sealant there is and how hard it is to remove
- How many rooms, windows or areas are involved
- Which sealant suits the joint
- Access and height
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 will give you an honest view and a quote.
What to tell us for a quote
Photos by email are helpful but not essential. Please mention:
- If it’s domestic, commercial or a hotel
- Pictures of the joints, sent by email
- Whether it has been sealed before
- How many joints, rooms or windows are involved
For a quote, call 0345 464 0079 or send 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.
For landlords and businesses
We work for letting agents and landlords as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
FAQs for Steward's Green
What guarantee comes with external mastic in Steward's Green?
Every job comes with our one-year guarantee, wherever it is. We are also fully insured and ARBOMaster approved.
Can you do external mastic in Steward's Green?
Yes. We work across London and the South East, and Steward's Green is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
I’m a tenant. Can you help?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Should I point up the gap in my brickwork?
No. Cement or mortar cannot stretch and the joint fails. If it has already been filled, we can normally cut it out and reseal it.
When is the sealant fully cured?
Cure times vary by product. We tell you how long to leave it before we go.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Can you seal joints between two different materials?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. We pick a colour that works with both materials.
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
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.
Steward's Green buildings and the weather
With historic houses such as Hill Hall (about 1.6 miles south-east) nearby, there’s older building stock in the area around Steward's Green 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. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near Church of St John the Baptist, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Steward's Green is about 4 miles north-east of Loughton, in Essex. Our applicators cover external mastic for homes and businesses in Steward's Green and the surrounding area. Across Essex, we cover 644 places, and Steward's Green is one of them. We also work in London, about 16 miles from Steward's Green.
Every address in CM16 is within our area for external mastic. Other places close to Steward's Green include Fiddlers Hamlet (1 mile east), Ivy Chimneys (1 mile west), Epping (1 mile north-west), Hobbs Cross (1 mile south) and Theydon Garnon (1 mile south). We also work in nearby towns such as Harlow (6 miles north), Brentwood (9 miles south-east), Billericay (14 miles east), Loughton (4 miles south-west), Waltham Abbey (5 miles west) and Stansted Mountfitchet (15 miles north).
Near you in Steward's Green
We work in homes and buildings around St John's Church of England Voluntary Controlled School and The Merry Fiddlers pub and the streets around them. A little further out are St. Margaret's Hospital (1.1 miles north) and Epping Signalling Museum (0.5 miles north-west). The countryside around Steward's Green includes Gernon Bushes.
What we do, step by step
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we have agreed what’s being done, the area is protected and the work begins. It normally takes a few hours to a few days, depending on the length of joint and the access. Somewhere as small as Steward's Green, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Mention if the joints have been sealed before
- Tell us if parking is tricky
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
Asking for a quote is easy: tell us what needs doing and where. A few pictures by email make the job easier to understand, and we will take it from there.