Oxfordshire · England
External & façade joints in Bow, Oxfordshire
Problem with your movement joints in Bow? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Movement joints filled with mortar instead of sealant
- Damp patches traced to an open external joint
- Joints with sealant missing in places
For landlords and businesses
In hotels, rooms out of use cost money, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
We also work for property managers and facilities teams in Bow and across Oxfordshire. Several sites can go on one quote, and we are fully insured.
External mastic in Bow
Short cuts in external joints show up within a season or two. 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. If you have cracked joints where brick meets render or frames and weathered mastic that no longer stretches, we can put it right, whatever the surface.
Somewhere as small as Bow, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Place
- Bow (SN7)
- Region
- Oxfordshire
- Cover
- A year, on every job
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Do you need external mastic in Bow?
Some movement joints have been pointed up with mortar by mistake. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
People normally contact us after spotting something like this:
- Movement joints with cracked, split or missing sealant
- Panel joints letting water in
- Rain getting behind render or cladding at a joint
- Movement joints filled with mortar instead of sealant
For site and facilities teams at buildings such as Stanford in the Vale Church of England Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Comparing quotes
- Who turns up on the day
- How the surfaces are prepared before sealing
- Whether all the old sealant comes out first
- Is VAT in the price?
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Wash walls gently around the sealant
- Get split or bare joints resealed while the damage is small
- Never let anyone fill a movement joint with mortar
- Show decorators and builders where the movement joints are
Do not paint over the new sealant unless we have said the product is paintable. Paint can crack on a flexible joint, and paint can crack as the joint moves.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
Bow questions
Is Bow in your area for external mastic?
Yes, Bow is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we will give you a clear quote.
Do you cover smaller places like Bow?
Yes, Bow is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Will it make a mess?
We keep the work tidy. Nearby surfaces are protected, and we clear up when we’re done.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference.
Are you insured?
Yes. We are fully insured, and we can confirm the details when we quote.
Do you use backing rod?
That is backing rod, a closed-cell foam. It stops the sealant going in too deep and bonding to three sides so it can flex with the joint.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and we’ll quote it together.
How it works
We keep the work tidy and contained to the joints we are treating, so you can carry on as normal. The job usually takes a few hours for a handful of joints, longer for a whole elevation, and we explain the cure time before we leave. For a village or hamlet like Bow, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Let us know about stairs, lifts or work at height
- For indoor joints, keep the area dry beforehand if you can
- Move anything stored near the joints
Get a quote
If you are in Bow and need external mastic, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before work begins.
Related advice
More services for Bow
Why it’s worth doing now in Bow
The longer a joint stays open, the more water the wall takes in. In cold weather, frost can damage wet brick and render, so the problem grows beyond the joint itself. Around Bow, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Leaving a failed joint normally makes the job bigger, not smaller, because water and mould keep working on it. If you are unsure, phone 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why book with us
- 20+ years of sealant experience
- Fully insured
- Neat joints and a tidy finish
- 4.9 on Google from 180+ five-star reviews
Read what affects the cost or customer reviews.
Outside joints around Bow
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Longworth House (about 4.3 miles north-east) are a reminder that the area around Bow has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
Homes close to Church of St Denys include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Bow is about 4 miles east of Faringdon, in Oxfordshire. Across the SN7 area, our applicators can take on external mastic. Across Oxfordshire, we cover 443 places, Bow among them. For nearby work, see our Oxford page (14 miles or so).
All of SN7 is within our area for external mastic, from the main roads to the quietest streets. Whether your property is on Chapel Road, High Street and Sheards Lane or anywhere close by, we can help. Nearby, we also carry out external mastic in Stanford in the Vale (1 mile west), Hatford (1 mile north-west), Shellingford (2 miles west), Baulking (2 miles south-west) and Buckland (3 miles north). Larger places within reach include Oxford (14 miles north-east), Didcot (11 miles east), Abingdon-on-Thames (10 miles east), Witney (10 miles north), Carterton (10 miles north-west) and Wantage (5 miles south-east).
Near you in Bow
Locally, jobs take us to homes and businesses close to Former Red Lion Public House and Holy Trinity Church. Nearby you will also find Faringdon Museum (3.8 miles west) and Faringdon Castle (3.4 miles north-west).
What affects the cost of external mastic
We quote each job individually. This is what makes a difference:
- The number of rooms or windows
- The old material and how stubborn it is
- Any mould that needs treating
- How easy the joints are to reach
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference.
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:
- Whether it has been sealed before
- The type of property
- The address or postcode of the job
- A few pictures by email, if you can
To get a quote, phone 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.