Oxfordshire · England
External & façade joints in Elvendon, Oxfordshire
Professional external mastic in and around Elvendon, with every bit of old sealant taken out first and a 12-month guarantee.
- Old sealant gone brittle and cracked
- Rain getting behind render or cladding at a joint
- Joints where the bead has come unstuck
External mastic for homes and businesses in Elvendon
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. The colour is chosen to suit the brick or render so the joint does not stand out. We work on render & cladding joints, copings & trims and brickwork movement joints, and the jobs we see most are old sealant gone brittle and cracked and brick movement joints where the sealant has split.
External sealant needs dry, clean surfaces, so work around Elvendon is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Elvendon (RG8)
- Wider area
- Oxfordshire
- Cover
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What happens if it’s left?
The longer a joint stays open, the more water the wall takes in. In cold weather, frost can damage wet brick and render, so the damage spreads beyond the joint. In a small place like Elvendon, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
The cost reflects the work involved, not guesswork. That’s why we ask about the job first and agree the price before starting.
Why Elvendon clients choose us
- Fully insured
- Old sealant always removed completely
- Arbo and Everbuild products
- Every job guaranteed for a year
Read what affects the cost or customer reviews.
Work for landlords, hotels and businesses
If you manage several properties in or around Elvendon, several properties can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
Nearby places to Elvendon
More services for Elvendon
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Signs you need external mastic in Elvendon
Some movement joints have been pointed up with mortar. The joint can’t move, so the wall cracks somewhere else instead.
These are the problems we are asked about most:
- Failed seals between different materials
- Failed sealant between panels on a façade
- Brick movement joints where the sealant has split
- Sealant pulling away from one side of the joint
If you let a flat or house near Goring & Streatley station, split movement joints are easy to miss on a rental until damp shows inside.
Before booking anyone
- How hidden problems are handled
- Whether VAT is included
- Whether all the old sealant comes out first
- What the cure time is
When something else is needed
A few problems are outside what sealant work can do:
- Cracking across the wall rather than at a joint
- Subsidence or other structural problems
- Damp that isn’t coming from the joint
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly before booking.
What we seal
- Render & cladding joints
- Brickwork movement joints
- Copings & trims
- Joints between brick and frames
- Façade panels
- Concrete & block
How the visit works
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, do the work and tidy away. It generally takes a few hours for a handful of joints, longer for a whole elevation. In a small place like Elvendon, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Mention any sign-in or site rules at work premises
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Read more
Elvendon questions
Will you come out to Elvendon?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is Elvendon in your area for external mastic?
Yes. We work across London and the South East, and Elvendon is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear price.
Is it OK to seal over old sealant?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
Where do you work from?
Our base is in Crawley, and we work across South East England, London and Scotland.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
What colours does the sealant come in?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We choose the closest to your brick or render.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do you work at height?
It depends on the height and the site. Ground-floor joints are simple; for higher work, tell us about the building and we will confirm what’s needed.
How we quote for external mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Which sealant suits the joint
- When we can work, for business premises
- The amount of work
- Mould in or behind the old joints
Doing several joints on one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. We’ll send you a clear quote for the lot.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- If it’s domestic, commercial or a hotel
- Any access issues, like height or stairs
- If someone has resealed it before
- Where the job is, and your postcode
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or send us an email.
Walls and rooflines in Elvendon
With historic houses such as Basildon Park (about 2.1 miles south-west) nearby, there’s older building stock in the area around Elvendon as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like The Oratory Preparatory School? Then its movement joints, gutters and trims need looking after like any other building’s. Basildon Park, about 2.1 miles south-west, is one of the historic houses in the wider area around Elvendon.
Elvendon is about 6 miles south of Benson, in Oxfordshire. Elvendon gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Elvendon is one of 443 places in Oxfordshire where we work for external mastic. You can also see our page for Reading, roughly 8 miles from Elvendon.
Every address in RG8 is covered for external mastic, from the main roads to the quietest streets. That includes homes and businesses on Beech Lane and Battle Road and the roads around them. If you’re just outside Elvendon, we cover Goring (1 mile west), Lower Basildon (2 miles south-west), South Stoke (2 miles north-west), Streatley (2 miles west) and Moulsford (3 miles north-west). Larger places within reach include Didcot (8 miles north-west), Abingdon-on-Thames (13 miles north-west), Wantage (15 miles west), Henley-on-Thames (8 miles east), Grove (15 miles west) and Benson (6 miles north).
Local landmarks in Elvendon
Locally, jobs take us to homes and businesses close to Langtree School and The White Lion pub and the streets around them. Elvendon’s nearest station is Goring & Streatley station, about 1.4 miles west of the centre. Not far away are Hartslock.