Buckinghamshire · England
External Mastic in Bockmer End
External mastic in Bockmer End from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Weathered mastic that no longer stretches
- Brick movement joints where the sealant has split
- Joints pointed up with cement by mistake
External mastic in Bockmer End
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, leaving it bonded to two faces so it can move with the wall. If you’re dealing with brick movement joints where the sealant has split and sealant pulling away from one side of the joint, we can put it right.
Outside joints can only be sealed when they’re dry, so work in Bockmer End is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Each job carries a 12-month guarantee, whatever its size.
- Location
- Bockmer End (SL7)
- Region
- Buckinghamshire
- Guarantee
- One year on every job
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Questions from Bockmer End
Can you do external mastic in Bockmer End?
Yes, Bockmer End is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear quote.
I let a flat near Marlow station. Can you help?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before we start.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Does someone need to be in?
If the work is inside, we need someone to let us in. Once we have agreed the job, you do not need to watch us work.
Can you work on commercial sites?
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.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint.
Do you have insurance?
Yes. We’re fully insured.
Can you reach joints on upper floors?
It depends on the height and the site. Low-level joints are straightforward; for higher work, tell us about the building and we’ll confirm what’s needed.
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 the joint depth matters as much as the finish.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
Work for landlords, hotels and businesses
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.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
When it is not the sealant
It helps to know what we can’t do too:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Subsidence or other structural problems
- Loose or hollow render, which needs re-rendering
If you’re not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer.
What we seal
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
- Façade panels
- Joints between brick and frames
- Copings & trims
What we do, step by step
There is not much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes a few hours to a few days, depending on the length of joint and the access, including the tidy-up. For a village or hamlet like Bockmer End, 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.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- 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
- Mention any parking rules near the property
- Where the joints are inside, avoid wetting them before we arrive
- Mention any tricky access
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, and email photos if that’s easy.
Read more
What the job involves on each surface
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. Their movement joints are sealed over backing rod with a flexible sealant.
Aftercare tips
Good habits help new joints last longer. A few tips:
- Tell anyone working on the walls about the movement joints
- Make sure movement joints aren’t pointed over
- Fix overflowing gutters above sealed joints
- Keep high-pressure jets off the joints
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
Once a joint can’t move, the wall finds another way, normally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
What happens if it’s left?
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and does not last. Where a wall is exposed, as many are in small places like Bockmer End, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
What you pay reflects the work, not a rough estimate. That is why we ask about the job first and agree the price before starting.
Why Bockmer End customers choose us
- 4.9 on Google from 180+ five-star reviews
- 20+ years of sealant experience
- Sealant colour chosen to suit
- We are fully insured
Take a look at how sealant jobs are priced and customer reviews.
Outside joints around Bockmer End
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Harleyford Manor (about 1 mile south-east) are a reminder that the area around Bockmer End has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
For an older house near a landmark such as Church of St Peter and St Paul, the joints between older walls, newer extensions and the roofline need a sealant that can move. Schools such as Danesfield School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s. If you let a flat or house near Marlow station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Bockmer End is about 3 miles west of Marlow, in Buckinghamshire. We provide external mastic to homes and businesses in Bockmer End and the surrounding area. We cover 263 towns and villages across Buckinghamshire. We also work in Reading, around 10 miles away.
Our applicators cover all of SL7 for external mastic and the streets around it. You’ll find streets such as Bockmer Lane and Chestnut Close, all of which we cover. Nearby, we also carry out external mastic in Danesfield (1 mile south-east), Medmenham (1 mile south-west), Frogmill (1 mile south), Marlow Common (1 mile north-east) and Hurley (1 mile south-east). We also work in nearby towns such as High Wycombe (6 miles north-east), Chesham (14 miles north-east), Marlow (3 miles east), Amersham (13 miles north-east), Beaconsfield (9 miles north-east) and Chalfont St Peter (12 miles east).
Near you in Bockmer End
Typical jobs here are in homes near Sir William Borlase's Grammar School and The Dog and Badger pub, among other places. The nearest railway station is Marlow station, roughly 2.8 miles east. Nearby you’ll also find Marlow Museum (2.4 miles east) and Marlow Community Hospital (2.7 miles east). Not far away are Weycock Hill and Hurley Chalk Pit.