Slough · England
External Mastic in George Green
Sealing brickwork movement joints, render, cladding and façade joints in George Green, with a 12-month guarantee on every job. Call for a quick quote.
- Plants rooting in failed movement joints
- Movement joints filled with mortar instead of sealant
- Brick movement joints where the sealant has split
External mastic in George Green, done properly
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two where mortar or filler would crack. If you’re dealing with moss and dirt in joints with no sealant left and movement joints filled with mortar instead of sealant, we can help, whatever the surface.
In a village or hamlet like George Green, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
You are covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Location
- George Green (SL3)
- Region
- Slough
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
You don’t need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the work takes a few hours to a few days, depending on the length of joint and the access for a typical job. Somewhere as small as George Green, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- Let us know if you’ve seen damp or leaks
- Clear the area around the work
- For business premises, tell us about site rules or sign-in
Getting a quote
To get a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.
Advice
What we are called out for in George Green
Sometimes a movement joint was filled with mortar or a rigid filler by mistake. The joint can’t move, so the wall cracks somewhere else instead.
Common reasons people contact us include:
- Leaking joints around cladding and façade panels
- Sealant pulling away from one side of the joint
- Joints pointed up with cement by mistake
- Old sealant gone brittle and cracked
In the older streets around Parish Church of St Mary, an extension built onto an older house moves differently, and the joint between them takes the strain.
What your quote should include
- What the cure time is
- Whether they’re fully insured
- Whether the sealant suits the joint
- Whether VAT is included
Leave it or put it right?
Low-modulus sealants stretch easily, so they put less strain on the joint 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 a small place like George Green, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or send us an email.
What you get with us
- We leave the area clean and tidy
- White, clear, grey or coloured to suit, where the product allows
- Arbo and Everbuild products
- Homes, businesses and hotels
Take a look at our cost guide or our reviews.
Your questions about external mastic in George Green
Do you cover George Green for external mastic?
Yes. Our work covers London and the South East, and George Green is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear price.
Do you work for landlords with property near Langley station?
Yes, we work for landlords and agents. You can call 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before work begins.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
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.
What is a movement joint?
Most straight vertical gaps in brickwork are movement joints. It lets the bricks expand without cracking.
How much does external mastic cost in George Green?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Is it OK to fill a movement joint with cement?
No. Rigid materials can’t move with the wall, so the joint stops doing its job. Where a joint has been mortared, it can often be raked out and sealed properly.
External mastic in George Green: local notes
With historic houses such as Windsor Castle (about 3.3 miles south-west) nearby, there’s older building stock in the area around George Green as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. 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.
Letting a property close to Langley station? Then split movement joints are easy to miss on a rental until damp shows inside. For site and facilities teams at buildings such as Wexham Court Primary School, larger buildings have long runs of movement joint that eventually need resealing.
George Green is about 2 miles east of Slough, in Slough. Whether you’re in the middle of George Green or further out, we cover external mastic for every kind of property, from flats and houses to offices and hotels. George Green is one of 31 towns and villages in Slough we cover for external mastic. You can also see our page for Reading, roughly 19 miles from George Green.
Jobs for external mastic in SL3 works the same way as everywhere else we cover. Streets in the area include Thorn Drive, August End and Blinco Lane, and we cover them all. We also cover the places around George Green: Middlegreen (1 mile south), Wexham Court (1 mile north-west), Langley (1 mile south), Shreding Green (1 mile east) and Wexham Street (2 miles north-west). We also work in nearby towns such as Cippenham (4 miles west), Chalvey (3 miles south-west), Britwell (3 miles west), Burnham (4 miles west), Datchet (3 miles south) and Huntercombe (4 miles west).
Near you in George Green
We work in homes and buildings around Wexham School, The George Public House and Upton Court Grammar School, among other places. For rail, the closest station is Langley station, about 1.2 miles south-east. Nearby you’ll also find The Pavilions (3.7 miles north-east) and Museum of Eton Life (3.1 miles south-west). Green spaces nearby include Stoke Common.
Quotes for external mastic in George Green
Jobs vary more than people expect. The main factors:
- The amount of work
- Working hours on commercial sites
- How many rooms, windows or areas are involved
- Any mould that needs treating
What you pay reflects the work, not guesswork. That’s why we ask a few questions first.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Any access issues, like height or stairs
- How many joints, rooms or windows are involved
- If it’s domestic, commercial or a hotel
- A few pictures by email, if you can
Want a quote for external mastic? Please ring 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and send you a clear quote before any work starts.
What the job involves on each surface
Render joints
Render is weaker at the surface than brick, so a low-modulus sealant is kinder to the joint edges. Priming is done where the sealant calls for it.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant in a colour to suit the brick.
What we can’t put right
To be straight with you, there are a few things sealant will not fix:
- Cracks in the bricks or render themselves, away from the joints
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Failed render or damaged cladding panels
If in doubt, ring 0345 464 0079 or email us and we will say what we think.
Surfaces we seal
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
- Façade panels
- Copings & trims
Looking after it afterwards
After the cure time, these simple habits help:
- Point out the joints to other trades
- Check external joints each spring
- Ask before painting over external sealant
- Never let anyone fill a movement joint with mortar
Do not paint over the new sealant unless we have said the product is paintable. Many exterior sealants aren’t designed to be painted, and paint can crack as the joint moves.
Once a joint can’t move, the wall finds another way, usually as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.