West Berkshire · England
External & façade joints in Mill Green, West Berkshire
External mastic for Mill Green and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Hard, crazed mastic that has stopped moving
- Joints pointed up with cement by mistake
- Rain getting behind render or cladding at a joint
For landlords and businesses
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
About our external mastic in Mill Green
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We take the old material out and do it properly. Common call-outs are for failed sealant between panels on a façade and moss and dirt in joints with no sealant left, on façade panels, render & cladding joints and concrete & block.
Outside joints can only be sealed when they’re dry, so work in Mill Green is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Your job is guaranteed for a year, as with all our work.
- Where
- Mill Green (RG19)
- Region
- West Berkshire
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Towns and villages near Mill Green
Also in Mill Green
How the visit works
When we arrive, we start by going over the job with you, so there are no surprises. Surfaces next to the work are protected before work begins. Most jobs take anything from a few hours to several days, depending on the building. For a village or hamlet like Mill Green, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First, the joints are inspected and the access agreed.
- 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.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Mention if the joints have been sealed before
- For indoor joints, keep the area dry beforehand if you can
- Let us know if you’ve seen damp or leaks
How to get a quote
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we’ll talk you through the work before giving you a price.
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Signs you need external mastic in Mill Green
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, so it pulls away from the edges.
People usually contact us after spotting one of these:
- Hard, crazed mastic that has stopped moving
- Movement joints filled with mortar instead of sealant
- Failed sealant between panels on a façade
- Moss and dirt in joints with no sealant left
If you let a flat or house near Thatcham station, split movement joints are easy to miss on a rental until damp shows inside.
What your quote should include
- Is the old sealant removed completely?
- Who does the work, and how experienced they are
- What the cure time is
- Is VAT in the price?
How we quote for external mastic
You’ll get a clear quote before work begins. It’s based on:
- How easy the joints are to reach
- When we can work, for business premises
- Any mould that needs treating
- The old material and how stubborn it is
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and give you a clear price before we start.
Asking for a quote
When you call or email, these details help:
- 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 someone has resealed it before
If you’re in Mill Green and need external mastic, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Walk round the building once a year and look at the joints
- Tell anyone working on the walls about the movement joints
- Don’t let climbing plants root in the sealant
- Keep water from gutters off the wall
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead and let water in behind.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years.
Questions from Mill Green
Can you do external mastic in Mill Green?
Yes, Mill Green 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.
I let a flat near Thatcham station. Can you help?
Yes, we work for landlords and letting agents. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Where are you based?
We are a Crawley-based firm. Our area covers South East England, London and Scotland.
Can you seal joints between render and window frames?
Yes. Different materials move at different rates, so the joint between them must be flexible. We choose one that suits both surfaces.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
What do you put in the joint?
Products from Arbo and Everbuild, among others, picked for each joint. We will tell you what we’re using and why.
Will the new joint stand out?
The aim is a neat, even joint in a colour that suits the wall. We will talk through colour options before we start.
Can new sealant go over the old?
No, it won’t last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Different surfaces, different methods
Cladding and façade panels
Cladding and façade panels are generally separated by sealed joints. Each joint gets a sealant that suits the panel and its movement.
Concrete and blockwork
Concrete faces can be dusty and porous, so preparation is key. We prime where the sealant needs it before sealing.
What sealant work can’t fix
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Cracking across the wall rather than at a joint
- Movement that’s more than a sealant joint can take
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think before you book.
Surfaces we seal
- Façade panels
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
- Concrete & block
Walls and rooflines in Mill Green
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Shaw House (about 4.6 miles north-west) are a reminder that the area around Mill Green 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 site and facilities teams at buildings such as Cheam School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Homes close to Church of St Peter include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Mill Green is about 3 miles south of Thatcham, in West Berkshire. From the centre of Mill Green to the outskirts, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Across West Berkshire, we cover 155 places, and Mill Green is one of them. We also work in Reading, about 13 miles from Mill Green.
Every address in RG19 is within our area for external mastic, from the main roads to the quietest streets. If you are just outside Mill Green, we cover Headley (1 mile west), Goose Hill (1 mile east), Plastow Green (1 mile south), Crookham (1 mile north-east) and Heads Hill (1 mile north-west). Within a short drive, we also cover Newbury (4 miles north-west), Thatcham (3 miles north), Burghfield Common (8 miles east), Speenhamland (5 miles north-west), Hungerford (12 miles west) and Spencers Wood (12 miles east).
Near you in Mill Green
Locally, jobs take us to homes and businesses close to New Greenham Park and The Travellers Friend pub, among other places. For rail, the closest station is Thatcham station, about 2 miles north. Nearby you will also find West Berkshire Community Hospital (3.6 miles north-west) and Old Chapel Textile Centre (1.7 miles west). The countryside around Mill Green includes Ladle Hill and Thatcham Reed Beds.