West Berkshire · England
External & façade joints in Bagshot, West Berkshire
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Bagshot. Fully insured, ARBOMaster approved and guaranteed for a year.
- Plants rooting in failed movement joints
- Brick movement joints where the sealant has split
- Hard, crazed mastic that has stopped moving
Quotes for external mastic in Bagshot
Some jobs are bigger than they look, and some smaller. The main factors:
- Working hours on commercial sites
- The old material and how stubborn it is
- Whether the work is at height
- Any mould that needs treating
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, phone 0345 464 0079 or email us for an honest opinion and a quote.
What to tell us for a quote
When you contact us, these details help:
- How many joints, rooms or windows are involved
- If it’s domestic, commercial or a hotel
- Pictures of the joints, sent by email
- The problem you’ve noticed
We don’t publish a price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To arrange one, call 0345 464 0079 or drop us an email.
External mastic in Bagshot, done properly
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. The colour is chosen to suit the brick or render. If you have leaking joints around cladding and façade panels and moss and dirt in joints with no sealant left, we can put it right.
Older homes in small places like Bagshot may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water normally gets in, and they need the right sealant at the right depth.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Bagshot (RG17)
- Region
- West Berkshire
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Bagshot
More services for Bagshot
The process
You do not need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the work takes a few hours to a few days, depending on the length of joint and the access in most cases. Somewhere like Bagshot needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Mention any parking rules near the property
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we will talk you through the work and send you a clear quote.
Related advice
Your questions about external mastic in Bagshot
Is Bagshot in your area for external mastic?
Yes, Bagshot is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear price.
I let a flat near Bedwyn station. Can you help?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
How long will you be here?
As a guide, most jobs take anything from a few hours to several days, depending on the building. Bigger jobs take longer, and we’ll tell you how long to expect.
Is there any odour?
Possibly a little. It fades as the sealant cures, and ventilation helps.
Can you seal joints between render and window frames?
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.
Do you use backing rod?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. That way it bonds to the two sides only and can stretch.
What should I tell you?
Just the basics: where it is, what you’ve noticed and how we reach it. Then phone 0345 464 0079 or drop us an email.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We will tell you how long to leave the joint before we leave.
What we cannot put right
We’d rather tell you now than do work that won’t last, so these are the limits:
- Movement that’s more than a sealant joint can take
- Cutting new joints into brickwork, which is building work rather than sealant work
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before you book.
Joints and surfaces we work on
- Joints between brick and frames
- Copings & trims
- Brickwork movement joints
- Concrete & block
- Façade panels
- Render & cladding joints
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Ask before painting over external sealant
- Keep high-pressure jets off the joints
- Keep soil, plants and ivy away from the joints
- Deal with leaking gutters that soak the joints below
Do not paint over the new sealant unless we’ve said the product is paintable. Paint can crack on a flexible joint.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal.
Surface by surface
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. A flexible sealant bridges the two so the movement is taken up.
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind and protects the render itself.
For landlords and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
Signs you need external mastic in Bagshot
Using the wrong sealant is another common reason. A high-modulus or general-purpose sealant can be too rigid for a busy joint, so it pulls away from the edges.
Keep an eye out for these signs:
- Rigid filler in a joint that should flex
- Old sealant gone brittle and cracked
- Brick movement joints where the sealant has split
- Gaps where render, brick and frames meet
Letting a property close to Bedwyn station? Then split movement joints are easy to miss on a rental until damp shows inside.
Comparing quotes
- What the cure time is
- How long the guarantee is
- How the joint is cleaned and prepared
- Whether you can choose the colour
What external mastic looks like in Bagshot
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to Church of the Good Shepherd include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain. If you look after a building such as John O'Gaunt School, larger buildings have long runs of movement joint that eventually need resealing.
Bagshot is in West Berkshire. Whether you’re in the middle of Bagshot or further out, we cover external mastic for every kind of property. Bagshot is one of 155 places in West Berkshire where we work for external mastic. Reading is on our list too, around 25 miles away.
Our applicators cover all of the RG17 postcode area for external mastic and the streets around it. Close by, we work in Woodside (6 miles south). Further out, we also cover Newbury (10 miles east), Thatcham (12 miles east), Speenhamland (10 miles east), Lambourn (9 miles north), Shaw (10 miles east) and Kingsclere (14 miles east).
Local landmarks in Bagshot
The nearest railway station is Bedwyn station, about 2.4 miles west of the centre. Well-known places in the area include Bedwyn Stone Museum (2.6 miles west). The countryside around Bagshot includes Kintbury Newt Ponds and Inkpen Hill.