Oxfordshire · England
External & façade joints in Hook End, Oxfordshire
We cover Hook End for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly.
- Sealant pulling away from one side of the joint
- Failed seals between different materials
- Water getting into walls through failed joints
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Clear growth from the base of walls and joints
- Keep movement joints as flexible joints, not mortar
- Deal with leaking gutters that soak the joints below
- Walk round the building once a year and look at the joints
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They must stay as flexible joints, never rendered or pointed over.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick.
About our external mastic in Hook End
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall. If you have movement joints with cracked, split or missing sealant and panel joints letting water in, we can help, whatever the surface.
Outside joints can only be sealed when they’re dry, so work in Hook End is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
Whatever the size of the job, it’s backed by our 12-month guarantee.
- Where
- Hook End (RG8)
- Region
- Oxfordshire
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
What happens if it’s left?
Running new sealant over the old bead rarely lasts. The new layer cannot bond properly to old, weathered material, so we always take the old sealant out. Where a wall is exposed, as many are in small places like Hook End, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
The cost reflects the work involved, not guesswork. That is why we ask about the job first and agree the price before starting.
What you get with us
- 12-month guarantee on every job
- 4.9 on Google from 180+ five-star reviews
- ARBOMaster approved applicator
- White, clear, grey or another colour, product permitting
Take a look at what affects the cost or customer reviews.
Common problems we fix in Hook End
If plants are growing out of a joint, the sealant has generally failed or was never there. Roots and dirt hold water against the wall.
People normally contact us when they notice one of these:
- Sealant pulling away from one side of the joint
- Failed sealant between panels on a façade
- Damp patches traced to an open external joint
- Brick movement joints where the sealant has split
Letting a property close to Pangbourne station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Comparing quotes
- How the joint is cleaned and prepared
- Whether they seal over old material or remove it
- When the joint can take water or movement
- What guarantee comes with the work
How we quote for external mastic
Every job gets its own quote. This is what makes a difference:
- The number of rooms or windows
- Whether there’s mould to deal with
- Which sealant suits the joint
- Whether the work is at height
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Ask us for a quote and we’ll explain what it covers.
What we need to know
When you contact us, it’s useful to know:
- Roughly how big the job is
- Photos by email, if that’s easy
- Whether it’s a home or a business
- Any access issues, like height or stairs
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.
What the job involves on each 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
Joints in copings, parapets and trims are exposed to the worst of the weather. Each is resealed with a weatherproof, flexible sealant.
FAQs for Hook End
Do you cover Hook End for external mastic?
Yes. Our work covers London and the South East, and Hook End is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing.
Do you work for landlords with property near Pangbourne station?
Yes. We work for letting agents and landlords as well as homeowners. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear price.
Is the work guaranteed?
Yes. There’s a 12-month guarantee on every job, wherever you are.
Do the sealants smell?
There can be a smell while the sealant cures, but it fades. Ventilation helps.
Where is Mr Mastic based?
We’re based in Crawley, and we work across South East England, London and Scotland.
Can you quote for more than one area?
Yes. Several rooms, windows or areas can go on one quote.
Which products do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Places near Hook End
Other services in Hook End
How the visit works
You don’t need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the job takes a few hours for a handful of joints, longer for a whole elevation in most cases. In a small place like Hook End, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Getting ready for the visit
- Let us know about stairs, lifts or work at height
- Keep children and pets away from the work area
- Move anything stored near the joints
Ask for a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. When it suits you, call 0345 464 0079 or email us.
Read more
Walls and rooflines in Hook End
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Mapledurham House (about 2.9 miles south) are a reminder that the area around Hook End has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
Schools such as Checkendon Church of England (A) Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. In the older streets around St Peter and St Paul, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Hook End is about 5 miles north-west of Caversham, in Oxfordshire. Whether you’re in the middle of Hook End or further out, we cover external mastic for every kind of property, from flats and houses to offices and hotels. 443 places in Oxfordshire are on our list. We also work in Reading, about 6 miles from Hook End.
Work in RG8 is quoted and booked the same way as anywhere else. We also cover the places around Hook End: Cane End (1 mile south-east), Checkendon (1 mile north), Gallowstree Common (2 miles south-east), Woodcote (2 miles west) and Stoke Row (2 miles north-east). Within a short drive, we also cover Didcot (11 miles north-west), Abingdon-on-Thames (15 miles north-west), Thame (15 miles north), Henley-on-Thames (6 miles east), Benson (7 miles north-west) and Chinnor (13 miles north-east).
What’s near Hook End
We work in homes and buildings around Langtree School and The Highwayman Public House. The closest station to Hook End is Pangbourne station, about 3.8 miles south-west of the centre. A little further out are Battle Hospital (5 miles south). Green spaces nearby include Hartslock.