Oxfordshire · England
External Mastic in Letcombe Regis
Sealing brickwork movement joints, render, cladding and façade joints in Letcombe Regis, with a one-year guarantee on every job. Ask us for a quote.
- Brick movement joints where the sealant has split
- Failed sealant between panels on a façade
- Water getting into walls through failed joints
External mastic in Letcombe Regis
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. If you’re dealing with cracked joints where brick meets render or frames and failed sealant between panels on a façade, we can help, on render & cladding joints, concrete & block and joints between brick and frames alike.
Somewhere as small as Letcombe Regis, homes and farm buildings often face open ground, 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.
Big or small, you get the same one-year guarantee.
- Location
- Letcombe Regis (OX12)
- Region
- Oxfordshire
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
How to look after the new joints
How long the joints last depends on use and care. Here’s what we suggest:
- Keep soil, plants and ivy away from the joints
- Make sure movement joints aren’t pointed over
- Point out the joints to other trades
- Avoid pressure-washing directly into sealant joints
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage which cost more to put right than the joint.
Do you need external mastic in Letcombe Regis?
The wrong product in a moving joint is a classic cause. A high-modulus or general-purpose sealant can be too rigid for a busy joint, and it tears off the sides.
People generally contact us when they notice something like this:
- Old sealant gone brittle and cracked
- Water getting into walls through failed joints
- Panel joints letting water in
- Sealant pulling away from one side of the joint
If you look after a building such as St Nicholas CofE Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Questions to ask before booking
- How long the guarantee is
- How much experience the applicator has
- Whether all the old sealant comes out first
- Are they insured?
Why it’s worth doing now in Letcombe Regis
Resealing a run of joints in one go is normally better than patching one at a time. They’ve weathered the same way. In a small place like Letcombe Regis, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Ask us for a quote and we’ll explain what it covers.
Why choose Mr Mastic in Letcombe Regis
- Old sealant always removed completely
- Approved under the ARBOMaster scheme
- Colour picked to suit the job
- 180+ five-star Google reviews
Read what affects the cost and customer reviews.
What the job involves on each surface
Cladding and façade panels
If the façade has a specified sealant, that’s what we use. Tell us what the building has when you get in touch.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant in a colour to suit the brick.
External mastic in Letcombe Regis: local notes
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.
Homes close to Church of St Andrew include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Letcombe Regis is about 2 miles south-west of Wantage, in Oxfordshire. From the centre of Letcombe Regis to the outskirts, external mastic is available for homes and businesses alike. Our area takes in 443 places across Oxfordshire. For nearby work, see our Oxford page.
Work in OX12 works the same way as everywhere else we cover. Whether your property is on Main Street, Greyhound Mews and Old Manor Court or anywhere close by, we can help. Close by, we work in East Challow (1 mile north), Letcombe Bassett (1 mile south-west), Childrey (1 mile north-west), West Challow (1 mile north-west) and Wantage (2 miles north-east). Within a short drive, we also cover Oxford (15 miles north-east), Didcot (9 miles east), Abingdon-on-Thames (10 miles north-east), Witney (15 miles north), Carterton (15 miles north-west) and Faringdon (8 miles north-west).
Landmarks near Letcombe Regis
In Letcombe Regis, that means homes and buildings near St Mary's School, The Greyhound Public House and Betjeman Millennium Park. A little further out are Williams F1 Grand Prix Collection (3.3 miles north-east). For a walk, there’s Letcombe Valley and Chain Hill.
Letcombe Regis questions
Is there a guarantee on external mastic in Letcombe Regis?
All our work, in Letcombe Regis and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Can you do external mastic in Letcombe Regis?
Yes. Our work covers London and the South East, and Letcombe Regis is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing.
What information do you need?
A short description and the location, plus pictures if you have them. If we need more, we’ll ask.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
What is backing rod for?
We fit closed-cell backing rod wherever the joint depth needs controlling. It controls the depth and stops the sealant bonding to the back, so the joint can move.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
What is a movement joint?
It’s a deliberate gap that lets the wall expand and contract without cracking. It’s sealed with a flexible sealant, not mortar.
Will the old sealant be removed?
Yes, always, and completely. New sealant won’t bond properly to old, so the joint is cleaned back first.
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
How we quote for external mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Whether there’s mould to deal with
- Access and height
- The old material and how stubborn it is
- The amount of work
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What to tell us for a quote
When you contact us, it’s useful to know:
- A few photos by email, if you can
- Whether it’s a home or a business
- Any access issues, like height or stairs
- The address or postcode of the job
Call for a quick quote, or email us if that’s easier. Tell us about the joints that need doing and we’ll talk you through the work and give you a clear quote.
What we do, step by step
The work is kept neat and contained to the joints we’re treating. Expect the work to take a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Letcombe Regis, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Move anything stored near the joints
- Let us know if you’ve seen damp or leaks
Get a quote
Every job is quoted individually, so the first step is telling us about yours. Simply phone 0345 464 0079 or drop us an email and describe the job, and photos are welcome.