Oxfordshire · England
Bucknell External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Bucknell, backed by a 12-month guarantee. Call for a quick quote.
- Joints pointed up with cement by mistake
- Sealant pulling away from one side of the joint
- Moss and dirt in joints with no sealant left
What we are called out for in Bucknell
Poor preparation causes many early failures: dusty or wet faces, no primer where one was needed, or old sealant left in. The new sealant then lets go long before it should.
These are the problems we’re asked about most:
- Sealant pulling away from one side of the joint
- Hard, crazed mastic that has stopped moving
- Movement joints filled with mortar instead of sealant
- Failed seals between different materials
If you live in an older home near Church of St Peter, an extension built onto an older house moves differently, and the joint between them takes the strain.
Questions to ask before booking
- Is VAT in the price?
- What insurance they hold
- What preparation is included
- Who does the work, and how experienced they are
External mastic for homes and businesses in Bucknell
Getting the depth right is half the job. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, leaving it bonded to two faces so it can move with the wall. Typical jobs include movement joints with cracked, split or missing sealant and weeds or debris growing in open joints, on joints between brick and frames, façade panels and render & cladding joints.
In a village or hamlet like Bucknell, older cottages and farm buildings often stand in the open, 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.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or drop us an email.
- Location
- Bucknell (OX27)
- Wider area
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Bucknell
Also in Bucknell
Your questions about external mastic in Bucknell
Do you work for landlords with property near Bicester North station?
Yes. We work for landlords and agents as well as householders. You can call 0345 464 0079 or email us with the details for a clear quote.
Do you cover Bucknell for external mastic?
Yes, Bucknell is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear quote.
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.
Is the work guaranteed?
Yes. There’s a 12-month guarantee on every job, wherever you are.
Is there any odour?
It depends on the product. Some products have a noticeable smell, others very little.
Can a movement joint be filled with mortar?
No. Mortar locks the joint solid, so the movement cracks the wall elsewhere. Use a flexible sealant with backing rod.
Can you seal over the old sealant?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Should I try DIY first?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
What the job involves on each surface
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
Copings and trims
Coping joints that leak let water straight down into the wall. Resealing them is a small job that protects a lot.
What affects the cost of external mastic
Your quote is based on your job. We take into account:
- How easy the joints are to reach
- The number of rooms or windows
- Any working-time requirements on site
- The product the joint needs
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Asking for a quote
When you contact us, it’s useful to know:
- A few pictures by email, if you can
- How many joints, rooms or windows are involved
- Any access issues, like height or stairs
- What’s wrong with the joints now
Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job, and we’ll take it from there.
How to look after the new joints
So the new joints stay in good condition:
- Make sure movement joints aren’t pointed over
- Clear growth from the base of walls and joints
- Show decorators and builders where the movement joints are
- Deal with leaking gutters that soak the joints below
Don’t paint over the new sealant unless we’ve said the product is paintable. Many exterior sealants aren’t designed to be painted, and paint can crack as the joint moves.
Small splits are the time to act. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
How the visit works
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours to a few days, depending on the length of joint and the access. Somewhere like Bucknell needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- Both sides are cleaned back to sound material and primed if needed.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
How to prepare
- Keep pets and children clear of the area while we work
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any sign-in or site rules at work premises
How to get a quote
Need a quote? Please phone 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and give you a clear quote before we start.
Advice
Honest limits
We’ll always be straight with you, so here’s what sealant cannot fix:
- Rising or penetrating damp from elsewhere in the wall
- Cracked brickwork or render that needs a builder or plasterer
- Subsidence or other structural problems
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
What we seal
- Joints between brick and frames
- Façade panels
- Render & cladding joints
- Copings & trims
- Concrete & block
- Brickwork movement joints
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
Bucknell buildings and the weather
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Rented homes near Bicester North station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies. Schools such as Gagle Brook Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Bucknell is about 2 miles north-west of Bicester, in Oxfordshire. Bucknell gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Bucknell is one of 443 towns and villages in Oxfordshire where we work. Our Oxford page covers work nearby.
Every address in OX27 is covered for external mastic, from the main roads to the quietest streets. Streets in the area include New Row, Bicester Road and School Paddock, all of which we cover. We also cover Bure Park (2 miles south-east), Stoke Lyne (2 miles north), Caversfield (2 miles east), Bicester (2 miles south-east) and Hardwick (3 miles north-east). Further out, we also cover Oxford (12 miles south), Banbury (12 miles north-west), Thame (15 miles south-east), Kidlington (8 miles south-west), Headington Quarry (11 miles south) and Chipping Norton (15 miles west).
What’s near Bucknell
Around Bucknell, our work takes us to homes and buildings near The Trigger Pond Public House and The Bicester School. The nearest railway station is Bicester North station, roughly 2.2 miles south-east of the centre. A little further out are Bicester Village (2.7 miles south-east) and Bicester Community Hospital (2.4 miles south-east). For a walk, there’s Woodsides Meadow and Graven Hill.