Oxfordshire · England
External & façade joints in Westcot, Oxfordshire
Problem with your movement joints in Westcot? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Moss and dirt in joints with no sealant left
- Rigid filler in a joint that should flex
- Failed sealant between panels on a façade
What happens on the day
There’s no need to move everything out before we come, only the area right around the joints. Everything nearby is protected, and the job takes anything from a few hours to several days, depending on the building for a typical job. For a village or hamlet like Westcot, 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.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- On commercial sites, let us know about site rules
- Move anything stored near the joints
- Let us know about earlier repairs to the joints
Getting a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved and give you a clear price.
Related advice
How we handle external mastic in Westcot
Getting the depth right is half the job. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, leaving it bonded to two faces so it can move with the wall. We work on façade panels, brickwork movement joints and render & cladding joints, and common reasons people get in touch are movement joints filled with mortar instead of sealant and failed seals between different materials.
Around Westcot, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water normally gets in, and they need the right sealant at the right depth.
Every job comes with our 12-month guarantee.
- Location
- Westcot (OX12)
- Region
- Oxfordshire
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
External mastic in Westcot: local notes
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near Church of the Holy Rood, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Westcot is about 4 miles west of Wantage, in Oxfordshire. Homes, rented property, offices and hotels in Westcot can book us for external mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our area takes in 443 places across Oxfordshire. Oxford is on our list too, about 16 miles from Westcot.
Every address in OX12 is covered for external mastic. Neighbouring places we cover for external mastic include Sparsholt (1 mile east), Kingston Lisle (1 mile west), Woolstone (3 miles west), Upper Lambourn (5 miles south) and Sheepdrove (5 miles south). We also work in nearby towns such as Didcot (11 miles east), Abingdon-on-Thames (12 miles north-east), Witney (14 miles north), Carterton (13 miles north), Wantage (4 miles east) and Grove (4 miles east).
What’s near Westcot
A little further out are Faringdon Day Hospital (5.8 miles north-west) and Uffington Museum (2.5 miles west). Not far away are Rams Hill and Letcombe Valley.
FAQs for Westcot
Do you cover Westcot for external mastic?
Yes, Westcot is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or send us an email and tell us what needs doing.
What guarantee comes with external mastic in Westcot?
All our work, in Westcot and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
What information do you need?
A short description and the location. If we need more, we’ll ask.
Do you seal joints where cladding meets other materials?
Yes. Materials like render, brick, metal and uPVC all move differently, so the joint between them must be flexible. We choose one that suits both surfaces.
I’m a tenant. Can you help?
Of course. Ask your landlord first, and we can send them the quote if that helps.
When will the joints need doing again?
That depends on the wall, the weather and the movement. Look for splits, hardening or edges coming away and have them redone then.
Is it messy?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Different surfaces, different methods
Render joints
Water behind render can lead to blown patches. A sound joint keeps the render dry behind and protects the render itself.
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. We reseal their joints with backing rod and a flexible product.
Quotes for external mastic in Westcot
You’ll get a clear quote before we start. It takes into account:
- The size of the job
- Mould in or behind the old joints
- How easy the joints are to reach
- Whether old sealant or filler has to be cut out
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before work begins.
Asking for a quote
When you call or email, it’s useful to know:
- Roughly how big the job is
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
- Access, such as stairs, a lift or height
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that is easy.
Can I do it myself?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Nearby places to Westcot
What else we do in Westcot
Common problems we fix in Westcot
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it can’t stretch and rips as the joint opens.
It’s worth asking for a quote if you see:
- Failed sealant between panels on a façade
- Gaps where render, brick and frames meet
- Rain getting behind render or cladding at a joint
- Joints where the bead has come unstuck
For site and facilities teams at buildings such as The Ridgeway Church of England (C) Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Before booking anyone
- Whether all the old sealant comes out first
- Whether they’re fully insured
- The length of the guarantee
- What happens if the job turns out different
Why act early in Westcot
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. In a small place like Westcot, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
What you pay reflects the work, not guesswork. That’s why we ask about the job first and agree the price before starting.
What you get with us
- Every job guaranteed for a year
- We never seal over old sealant
- 20+ years of sealant experience
- We are fully insured
Landlord and commercial work in Westcot
Hotels need rooms back in use, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can be quoted together.