Hertfordshire · England
External Mastic in Chorleywood West
Movement joints in Chorleywood West need attention? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Brick movement joints where the sealant has split
- Water getting into walls through failed joints
- Joints pointed up with cement by mistake
External mastic for homes and businesses in Chorleywood West
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, so it bonds to the two sides only and can stretch. If you are dealing with rain getting behind render or cladding at a joint and moss and dirt in joints with no sealant left, we can help, on joints between brick and frames, render & cladding joints and concrete & block alike.
Older homes in small places like Chorleywood West may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water usually gets in.
Each job carries a 12-month guarantee, whatever its size.
- Location
- Chorleywood West (WD3)
- Wider area
- Hertfordshire
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Keeping the joints in good condition
Simple care keeps the joints in good condition. Our advice:
- Have failed joints looked at early
- Show decorators and builders where the movement joints are
- Wash walls gently around the sealant
- Ask before painting over external sealant
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
Once a joint cannot move, the wall finds another way, generally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
Honest limits
We will not take on work that won’t last, so here’s what sealant can’t put right:
- Movement that is more than a sealant joint can take
- Render that’s blown, hollow or coming away
- Walls that need new movement joints cut into them
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
What we seal
- Joints between brick and frames
- Copings & trims
- Render & cladding joints
- Façade panels
- Brickwork movement joints
- Concrete & block
Do you need external mastic in Chorleywood West?
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
Keep an eye out for any of the following:
- Joints where the bead has come unstuck
- Old sealant gone brittle and cracked
- Leaking joints around cladding and façade panels
- Movement joints filled with mortar instead of sealant
Managing a site like Arnett Hills Junior Mixed and Infant School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Comparing quotes
- Whether all the old sealant comes out first
- What product goes in the joint
- How the colour is chosen
- What the quote includes, VAT included or not
Chorleywood West buildings and the weather
Historic houses like Chenies Manor House (about 2.8 miles north-west) are a reminder that the area around Chorleywood West has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. 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.
In the older streets around Church of St Peter, older walls, gutters and the joints where extensions meet them need a flexible sealant. Letting a property close to Rickmansworth station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Chorleywood West is about 1 mile east of Chorleywood, in Hertfordshire. Anywhere in WD3, our applicators can take on external mastic. Our area takes in 381 places across Hertfordshire. For nearby work, see our London page (20 miles or so).
Work in WD3 works the same way as everywhere else we cover. We cover properties on Chess Lane, Valley Road and Sarratt Lane and the roads around them. Close by, we work in Loudwater (1 mile north), Rickmansworth (1 mile south-east), Mill End (1 mile south-west), Croxley Green (2 miles east) and Micklefield Green (2 miles north). Within a short drive, we also cover Watford (4 miles east), Hemel Hempstead (7 miles north), St Albans (10 miles north-east), Harpenden (13 miles north-east), Hatfield (13 miles north-east) and Borehamwood (9 miles east).
Landmarks near Chorleywood West
Locally, jobs take us to homes and businesses close to Rickmansworth Park, York House School and Saint Joan of Arc Catholic School, among other places. The nearest railway station is Rickmansworth station, about 0.8 miles south-east. A little further out are Bishops Wood Hospital (2.8 miles south-east) and Charter Place (3.7 miles east). Open spaces near Chorleywood West include Chorleywood Common and Tumbling Bay.
Quotes for external mastic in Chorleywood West
The price is agreed before any work begins. It takes into account:
- The old material and how stubborn it is
- The number of rooms or windows
- Which sealant suits the joint
- The amount of work
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Helping us quote
Before you ask for a quote, have a think about:
- What’s wrong with the joints now
- If someone has resealed it before
- A few pictures by email, if you can
- Roughly how big the job is
For a quote, call 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before we start.
Chorleywood West questions
Is Chorleywood West in your area for external mastic?
Yes. We work across London and the South East, and Chorleywood West is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we’ll send you a clear quote.
Is Chorleywood West within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
What colours does the sealant come in?
The aim is a neat, even joint in a colour that suits the wall. Colour is agreed with you before we begin from the range available.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Which products do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Can you quote for more than one area?
Yes. Several rooms, windows or areas can go on one quote.
Also near Chorleywood West
What else we do in Chorleywood West
What happens on the day
We bring everything the job needs with us. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes a few hours to a few days, depending on the length of joint and the access. Somewhere like Chorleywood West needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- Both sides are cleaned back to sound material and primed if needed.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Let us know about earlier repairs to the joints
- Tell us about any water getting in
- Mention any tricky access
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, ring 0345 464 0079 or email us.
Advice
Work for landlords, hotels and businesses
For anyone letting property in or around Chorleywood West, several properties can be quoted together. Send us the addresses and the work at each, and photos by email help.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Why act early in Chorleywood West
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. Too stiff a sealant can pull at the edges and break them. Older cottages and farmhouses around Chorleywood West can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, phone 0345 464 0079 or email us and we’ll give you an honest view and a quote.
Why book with us
- Homes, businesses and hotels
- Every job guaranteed for a year
- More than 20 years in sealant work
- Trusted Arbo and Everbuild sealants