Oxfordshire · England
External Mastic in Aldworth
External mastic for Aldworth, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Sealant pulling away from one side of the joint
- Weeds or debris growing in open joints
- Panel joints letting water in
How we handle external mastic in Aldworth
On houses, flats and commercial buildings across Aldworth, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. Common call-outs are for joints pointed up with cement by mistake and movement joints with cracked, split or missing sealant, on render & cladding joints, façade panels and copings & trims.
Somewhere as small as Aldworth, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
Whatever the size of the job, it’s backed by our one-year guarantee in Aldworth and across Oxfordshire.
- Location
- Aldworth (RG8)
- Wider area
- Oxfordshire
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What we’re called out for in Aldworth
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
The problems people generally mention when they call include:
- Sealant that has lost its bond to the brick or render
- Water getting into walls through failed joints
- Movement joints with cracked, split or missing sealant
- Weeds or debris growing in open joints
Rented homes near Goring & Streatley station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
What to look for in a quote
- What insurance they hold
- Which colour the sealant will be
- How much experience the applicator has
- Whether the sealant suits the joint
Aldworth buildings and the weather
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Basildon Park (about 3.6 miles east) are a reminder that the area around Aldworth has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For site and facilities teams at buildings such as The Downs School, larger buildings have long runs of movement joint that eventually need resealing. If you live in an older home near St Mary's church, an extension built onto an older house moves differently, and the joint between them takes the strain.
Aldworth is about 7 miles south of Didcot, in Oxfordshire. Every kind of property in Aldworth is covered for external mastic. The work is guaranteed for a year. Aldworth is one of 443 towns and villages in Oxfordshire we cover for external mastic. We also work in Reading, around 11 miles away.
Postcode districts we cover here for external mastic: RG8. We also cover the places around Aldworth: Compton (2 miles west), Woodway (3 miles north-west), Aston Tirrold (4 miles north), East Ilsley (4 miles west) and Blewbury (4 miles north). Larger places within reach include Didcot (7 miles north), Abingdon-on-Thames (12 miles north), Wantage (11 miles north-west), Henley-on-Thames (13 miles east), Grove (12 miles north-west) and Benson (8 miles north-east).
Landmarks near Aldworth
Locally, jobs take us to homes and businesses close to The Bell Inn and the streets around them. For rail, the closest station is Goring & Streatley station, about 3 miles east. A little further out are Hampstead Norris Castle (2.8 miles south-west). Open spaces near Aldworth include Withymead Nature Reserve and Churn Hill.
Honest limits
To be straight with you, there are a few things sealant won’t fix:
- Adding movement joints to masonry that has none
- Failed render or damaged cladding panels
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If in doubt, call 0345 464 0079 or email us and we’ll say what we think before booking.
What we seal
- Concrete & block
- Copings & trims
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Brickwork movement joints
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
How the job changes by surface
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. The sealant is chosen with that in mind.
Copings and trims
Coping and trim joints face rain and sun head on. Each is resealed with a weatherproof, flexible sealant.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. 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: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Nearby places to Aldworth
More services for Aldworth
What affects the cost of external mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How many areas need sealing
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
- How easy the joints are to reach
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
Asking for a quote
To help us quote quickly, let us know:
- What the problem is, such as mould, gaps, leaks or cracking
- A few photos by email, if you can
- Where the job is, and your postcode
- Access, such as stairs, a lift or height
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will explain what’s involved.
What happens on the day
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the job takes a few hours for a handful of joints, longer for a whole elevation in most cases. Somewhere as small as Aldworth, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Move anything stored near the joints
- Let us know if you’ve seen damp or leaks
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Advice
Aldworth: your questions answered
Do you cover Aldworth for external mastic?
Yes. We work across London and the South East, and Aldworth is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll send you a clear quote.
Is Aldworth within the area you cover?
Yes. Aldworth is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
How long will you be here?
As a guide, most jobs take anything from a few hours to several days, depending on the building. Larger jobs naturally take longer, and we will say how long yours will take.
What is a movement joint?
A vertical gap in a long brick wall is usually a movement joint. It gives the wall room to move.
I’m a tenant. Can you help?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Do the sealants smell?
Possibly a little. It fades as the sealant cures.