Oxfordshire · England
Boars Hill External Mastic
External mastic for Boars Hill and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Joints where the bead has come unstuck
- Damp patches traced to an open external joint
- Old sealant gone brittle and cracked
About our external mastic in Boars Hill
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall so the joint does not stand out. If you’re dealing with weathered mastic that no longer stretches and cracked joints where brick meets render or frames, we can help.
Older homes in small places like Boars Hill may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Boars Hill (OX1)
- Wider area
- Oxfordshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of external mastic
The quote reflects the job in front of us. We look at:
- Which sealant suits the joint
- Mould in or behind the old joints
- Access and height
- Whether old sealant or filler has to be cut out
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- The problem you’ve noticed
- How we’d reach the joints
- A few photos by email, if you can
- How many joints, rooms or windows are involved
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you’re ready, ring 0345 464 0079 or email us.
FAQs for Boars Hill
Is Boars Hill within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Boars Hill in your area for external mastic?
Yes, Boars Hill is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Can tenants book the work?
Of course. Check with your landlord; we can send the quote to them too.
Can I add another job to the visit?
Yes. Several rooms, windows or areas can go on one quote.
Can a movement joint be filled with mortar?
No, not where the gap is a movement joint. Filling it with mortar defeats its purpose. A flexible sealant is the right fill.
Can you seal joints between two different materials?
Yes. Where different materials meet is one of the most common joints we seal. We use a flexible sealant suited to both surfaces with primer where required.
Do you do commercial work?
Yes, regularly. Larger jobs can be planned room by room or area by area.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We’ll give you the cure time for the product we used before we leave.
When something else is needed
A few problems are outside what sealant work can do:
- Render that’s blown, hollow or coming away
- Walls that need new movement joints cut into them
- Structural movement, which needs a surveyor or engineer
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
Joints and surfaces we work on
- Concrete & block
- Joints between brick and frames
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Façade panels
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Clear growth from the base of walls and joints
- Keep movement joints as flexible joints, not mortar
- Fix overflowing gutters above sealed joints
- Check the sealant is paintable before painting near it
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
Small splits are the time to act. At that stage it’s a simple cut out and reseal.
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Surface by surface
Joints between dissimilar materials
Each side of the joint may need its own preparation. We prepare both faces so the sealant bonds properly.
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so its sealant has to stay flexible.
How the visit works
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take a few hours for a handful of joints, longer for a whole elevation. Somewhere like Boars Hill needs a little journey planning: 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.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- Clear the area around the work
- Let us know about stairs, lifts or work at height
- Let us know if you’ve seen damp or leaks
Ask for a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Related advice
Landlords, agents and businesses in Boars Hill
For anyone letting property in or around Boars Hill, several properties can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can go on one quote.
What external mastic looks like in Boars Hill
Historic houses like Appleton Manor (about 2.9 miles west) are a reminder that the area around Boars Hill 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. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For landlords with property near Oxford station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. If you live in an older home near Church of St Peter, older walls, gutters and the joints where extensions meet them need a flexible sealant. For site and facilities teams at buildings such as Wootton St Peter's Church of England Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Boars Hill is about 3 miles north of Abingdon-on-Thames, in Oxfordshire. Anywhere in OX1, our applicators can take on external mastic. We cover 443 towns and villages across Oxfordshire, from the larger towns to small villages.
Postcode districts we cover here for external mastic: OX1. We cover properties on Berkeley Road, Jarn Way and Bedwells Heath and the roads around them. Neighbouring places we cover for external mastic include Bayworth (1 mile south-east), Chilswell (1 mile north), Sunningwell (1 mile south), Hinksey Hill (1 mile north-east) and Harcourt Hill (2 miles north). Larger places within reach include Oxford (4 miles north-east), Didcot (8 miles south), Bicester (14 miles north-east), Abingdon-on-Thames (3 miles south), Witney (10 miles north-west) and Carterton (13 miles west).
Local landmarks in Boars Hill
We work in homes and buildings around Raleigh Park, The Fox pub and Matthew Arnold School and the streets around them. The nearest railway station is Oxford station, about 2.8 miles north of the centre. A little further out are The Story Museum (2.8 miles north-east) and Westgate Shopping Centre (2.8 miles north-east). Green spaces nearby include Lashford Lane Fen and Harcourt Hill.