Buckinghamshire · England
Latimer External Mastic
Professional external mastic in and around Latimer, with old sealant always removed completely.
- Leaking joints around cladding and façade panels
- Weathered mastic that no longer stretches
- Movement joints filled with mortar instead of sealant
Why act early in Latimer
Resealing a run of joints in one go is normally better than patching one at a time. Joints of the same age tend to fail together and it means sorting access once. Older cottages and farmhouses around Latimer can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Doing several joints on one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Why us?
- Quality sealants from Arbo and Everbuild
- ARBOMaster approved applicator
- White, clear, grey or coloured to suit, where the product allows
- 12-month guarantee on every job
Take a look at our cost guide and customer reviews.
External mastic in Latimer, done properly
We are ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Some surfaces need a primer before sealing and we use one wherever it does. We work on joints between brick and frames, render & cladding joints and copings & trims, and people most often call us about cracked joints where brick meets render or frames and failed sealant between panels on a façade.
Around Latimer, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in.
Your job is guaranteed for a year, as with all our work.
- Where
- Latimer (HP5)
- Region
- Buckinghamshire
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What external mastic looks like in Latimer
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 Chenies Manor House (about 1.1 miles south-east) nearby, there’s older building stock in the area around Latimer as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
For landlords with property near Chalfont & Latimer station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Homes close to Church of St Mary Magdalene include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep. Schools such as Little Chalfont Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Latimer is about 2 miles east of Amersham, in Buckinghamshire. From the centre of Latimer to the outskirts, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Our Buckinghamshire coverage runs to 263 places, and Latimer is one of them. We also work in London, around 23 miles away.
Here we cover the HP5 postcode area for external mastic. That includes homes and businesses on Spring Close, The Grove and The Ridings. We also cover the places around Latimer: Little Chalfont (1 mile south-west), Chenies (1 mile east), Flaunden (2 miles north-east), Belsize (2 miles north-east) and Chorleywood (3 miles south-east). We also work in nearby towns such as Aylesbury (15 miles north-west), High Wycombe (9 miles south-west), Chesham (3 miles north-west), Marlow (12 miles south-west), Beaconsfield (6 miles south-west) and Chalfont St Peter (5 miles south).
What’s near Latimer
We work in homes and buildings around Dr Challoner's High School. Latimer’s nearest station is Chalfont & Latimer station, about 1 mile south. A little further out are Amersham Hospital (3.1 miles south-west) and Amersham Fair Organ Museum (1.7 miles west). Green spaces nearby include Sarratt Bottom nature reserve.
What affects the quote in Latimer
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How easy the joints are to reach
- Whether there’s mould to deal with
- How many rooms, windows or areas are involved
- The product the joint needs
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part.
Asking for a quote
Photos by email are helpful but not essential. Please mention:
- The rough size of the job
- Where the property is
- A few pictures by email, if you can
- Whether it’s a home or a business
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, phone 0345 464 0079 or email us.
How the visit works
Once we are on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours to a few days, depending on the length of joint and the access. Somewhere as small as Latimer, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Mention any tricky access
- For indoor joints, keep the area dry beforehand if you can
- Move anything stored near the joints
Getting a quote
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
Read more
How the job changes by surface
Joints between dissimilar materials
Wherever two materials meet, they move differently. We seal the joint with a flexible exterior sealant so neither cracks the other.
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. If that’s happened, we rake it out and reseal it properly.
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Failed render or damaged cladding panels
- Subsidence or other structural problems
- Cutting new joints into brickwork, which is building work rather than sealant work
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Concrete & block
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
- Façade panels
Landlords, agents and businesses in Latimer
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
If you manage several properties in or around Latimer, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
Your questions about external mastic in Latimer
Do you work for landlords with property near Chalfont & Latimer station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Is Latimer in your area for external mastic?
Yes, Latimer is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing.
Why do you put foam in the joint first?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides, which would stop it stretching.
Is it OK to fill a movement joint with cement?
No. Rigid materials cannot move with the wall. Where a joint has been mortared, it can often be raked out and sealed properly.
Where are you based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
How long should I leave it?
That depends on the sealant used, so follow the cure time we give you when we finish.
When will the joints need doing again?
That depends on the wall, the weather and the movement. Signs to watch for are cracking, hardening and gaps at the edges and have them redone then.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.
Nearby places to Latimer
Other services in Latimer
DIY versus a professional finish
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
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.