Buckinghamshire · England
Marlow Bottom External Mastic
External mastic for Marlow Bottom and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Joints pointed up with cement by mistake
- Brick movement joints where the sealant has split
- Sealant pulling away from one side of the joint
External mastic in Marlow Bottom, done properly
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two. If you have weathered mastic that no longer stretches and water getting into walls through failed joints, we can help, whatever the surface.
Older homes in small places like Marlow Bottom may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water usually gets in.
Big or small, you get the same one-year guarantee in Marlow Bottom and across Buckinghamshire.
- Where
- Marlow Bottom (SL7)
- Region
- Buckinghamshire
- Guarantee
- A year, on every job
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
DIY sealant or a professional job?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
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.
Common questions in Marlow Bottom
Is Marlow Bottom in your area for external mastic?
Yes. We work across London and the South East, and Marlow Bottom is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear price.
Do you work for landlords with property near Marlow station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Is the work guaranteed?
Yes, always. Each job is guaranteed for twelve months.
Where do you work from?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses and we are fully insured.
Is there any odour?
There can be a smell while the sealant cures. Ventilation helps.
Do you take out the old sealant first?
Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
What sealant do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Subsidence or other structural problems
- Adding movement joints to masonry that has none
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer.
Where we work in Marlow Bottom
- Façade panels
- Copings & trims
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
- Render & cladding joints
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Make sure movement joints aren’t pointed over
- Ask before painting over external sealant
- Wash walls gently around the sealant
- Tell anyone working on the walls about the movement joints
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
Also near Marlow Bottom
Other services in Marlow Bottom
Leave it or put it right?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost near the open joint, so the problem grows beyond the joint itself. In a small place like Marlow Bottom, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What you get with us
- Trusted Arbo and Everbuild sealants
- 180+ five-star Google reviews
- Fully insured
- Every job guaranteed for a year
Take a look at what affects the cost and our reviews.
Marlow Bottom buildings and the weather
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. With historic houses such as Harleyford Manor (about 2.8 miles south-west) nearby, there’s older building stock in the area around Marlow Bottom as well as newer homes. 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 Burford School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Homes close to St Mary the Virgin include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain. For landlords with property near Marlow station, outside joints that have cracked can let damp into a rental, so check them between lets.
Marlow Bottom is about 1 mile north of Marlow, in Buckinghamshire. Marlow Bottom gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Across Buckinghamshire, we cover 263 places, Marlow Bottom among them. There’s also a page for Reading, about 13 miles away.
Here we cover the SL7 postcode area for external mastic. External mastic is available to properties on Marlow Bottom, Squirrel Rise and Kingsley Drive. We also cover Burroughs Grove (1 mile east), Marlow (1 mile south), Little Marlow (2 miles east), Fern (2 miles east) and Bisham (2 miles south). Larger places within reach include High Wycombe (3 miles north-east), Chesham (11 miles north-east), Amersham (10 miles north-east), Beaconsfield (6 miles east), Chalfont St Peter (10 miles east) and Southcourt (15 miles north).
Landmarks near Marlow Bottom
In Marlow Bottom, that means homes and buildings near Great Marlow School and Three Horseshoes pub. The closest station to Marlow Bottom is Marlow station, about 1.5 miles south-east. Nearby you’ll also find Eden (2.9 miles north) and Chiltern Sound Phonograph Museum (1.2 miles south). Open spaces near Marlow Bottom include Carpenter's Wood.
What affects the cost of external mastic
There’s no set price list, because no two jobs are the same. The quote depends on:
- The type of sealant required
- Whether there’s mould to deal with
- How much there is to do
- Whether the work is at height
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Asking for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- The rough size of the job
- If someone has resealed it before
- Access, such as stairs, a lift or height
Every job is quoted individually, so start by telling us what you need. Just ring 0345 464 0079 or email us with the details, and photos are welcome.
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
How the visit works
You don’t need to clear the whole room or building 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 in most cases. Somewhere like Marlow Bottom needs a little journey planning: let us know about lanes, gates and parking. 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.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Tell us about any water getting in
- Move anything stored near the joints
- Mention any tricky access
Get a quote
For a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll send you a clear quote before any work starts.