Oxfordshire · England
Great Rollright External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Great Rollright, backed by a one-year guarantee. Ask us for a quote.
- Leaking joints around cladding and façade panels
- Sealant pulling away from one side of the joint
- Water getting into walls through failed joints
About our external mastic in Great Rollright
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it. If you are dealing with sealant pulling away from one side of the joint and plants rooting in failed movement joints, we can put it right, whatever the surface.
Outside joints can only be sealed when they’re dry, so work in Great Rollright is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Each job carries a 12-month guarantee.
- Where
- Great Rollright (OX7)
- Region
- Oxfordshire
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Questions from Great Rollright
Can you do external mastic in Great Rollright?
Yes, Great Rollright is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing.
Do you cover smaller places like Great Rollright?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
What colours does the sealant come in?
We aim for a joint that suits the wall rather than one that jumps out. We will talk through colour options before we start.
Will there be a smell?
Some sealants have a smell while they cure, but it fades. Opening a window helps.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.
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 work for hotels and businesses?
Yes. Hotels, offices and other businesses use us, and we are fully insured.
Are you insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
How to look after the new joints
To keep the joints looking good and working properly:
- Show decorators and builders where the movement joints are
- Look over the joints every year, ideally after winter
- Deal with leaking gutters that soak the joints below
- Ask before painting over external sealant
Only paint over the joint if we’ve confirmed the sealant can take paint. Paint can crack on a flexible joint, and paint can crack as the joint moves.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years.
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Landlords, agents and businesses in Great Rollright
We also work for property managers and facilities teams. We can quote a run of properties together, and we are fully insured.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Why act early in Great Rollright
Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The movement then cracks the brickwork or render nearby. The correct repair is a flexible sealant with the right backing. Around Great Rollright, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. We give a clear quote before work begins.
Why Great Rollright customers choose us
- Any old sealant cut out fully, not covered over
- 4.9 on Google from 180+ five-star reviews
- We’re fully insured
- Neat joints and a tidy finish
Read our cost guide or our reviews.
Nearby places to Great Rollright
What else we do in Great Rollright
What the job involves on each surface
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. Their movement joints are sealed over backing rod with a flexible sealant.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. That movement goes into the joint, so the sealant in it must stay soft and stretchy.
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours to a few days, depending on the length of joint and the access and we leave things clean and tidy. In a small place like Great Rollright, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- 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.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Mention if the joints have been sealed before
- Move anything stored near the joints
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
Every job is quoted individually. Simply call 0345 464 0079 or email us and describe the job, and photos are welcome.
Related advice
When to call us in Great Rollright
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.
If you can see any of these, it’s time to have the joints looked at:
- Hard, crazed mastic that has stopped moving
- Joints pointed up with cement by mistake
- Failed seals between different materials
- Damp patches traced to an open external joint
For site and facilities teams at buildings such as Great Rollright Church of England (Aided) Primary School, its movement joints, gutters and trims need looking after like any other building’s.
What your quote should include
- How the surfaces are prepared before sealing
- How much experience the applicator has
- What product goes in the joint
- What happens if they find a problem under the old sealant
What external mastic looks like in Great Rollright
With historic houses such as Chastleton House (about 4.9 miles west) nearby, there’s older building stock in the area around Great Rollright as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as Church of St Andrew, an extension built onto an older house moves differently, and the joint between them takes the strain.
Great Rollright is about 10 miles south-west of Banbury, in Oxfordshire. Whether you are in the middle of Great Rollright or further out, external mastic is available for homes and businesses alike. 443 places in Oxfordshire are on our list, from the larger towns to small villages. There’s also a page for Oxford, about 20 miles away.
We cover every part of the OX7 postcode area for external mastic. Local streets include High Street, Chapel End and The Green. If you’re just outside Great Rollright, we cover Over Norton (2 miles south), Chipping Norton (3 miles south), Salford (3 miles south-west), Sarsden (5 miles south-west) and Churchill (5 miles south-west). Further out, we also cover Banbury (10 miles north-east), Witney (13 miles south), Carterton (15 miles south), Kidlington (15 miles south-east), Neithrop (9 miles north-east) and Grimsbury (11 miles north-east).
Around Great Rollright
In Great Rollright, that means homes and buildings near The Unicorn Public House, among other places. Other landmarks nearby include Chipping Norton Museum of Local History (2.6 miles south) and Wheelbarrow Castle (3.5 miles west). Not far away are Woodford Bottom and Lamb's Pool.