Essex · England
Lexden External Mastic
Professional external mastic in and around Lexden, with every bit of old sealant taken out first and a 12-month guarantee.
- Sealant that has lost its bond to the brick or render
- Failed seals between different materials
- Joints pointed up with cement by mistake
How we handle external mastic in Lexden
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a matching colour. If you have moss and dirt in joints with no sealant left and movement joints with cracked, split or missing sealant, we can help, whatever the surface.
Houses in smaller places like Lexden can stand more in the open than those in a built-up town, so exposed walls and rooflines take more wind-driven rain. That’s where gutter joints and wall joints tend to fail first.
Our work is backed for twelve months, in Lexden and everywhere else we cover.
- Where
- Lexden (CO3, CO2)
- Region
- Essex
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Walls and rooflines in Lexden
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you look after a building such as Philip Morant School and College, larger buildings have long runs of movement joint that eventually need resealing. Homes close to Church of St Leonard include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Lexden is about 1 mile west of Colchester, in Essex. If you need external mastic in Lexden, please phone 0345 464 0079 or drop us an email for a quick quote. We are based in Crawley and cover Essex, Lexden included. Our area takes in 644 places across Essex. For nearby work, see our Chelmsford page.
Work in CO3 and CO2 is quoted and booked the same way as anywhere else. Whether your property is on Park Road, Heath Road and Capel Road or anywhere close by, our applicators can take on the job. Being close to the A1124, Lexden is simple for us to get to for external mastic. If you are just outside Lexden, we cover Camulodunum (1 mile east), Braiswick (1 mile north), Abbey Field (1 mile south-east), Colchester (1 mile east) and Beacon End (2 miles west). Within a short drive, we also cover Braintree (13 miles west), Clacton-on-Sea (13 miles south-east), Maldon (13 miles south-west), Witham (11 miles south-west), Halstead (11 miles west) and Heybridge (12 miles south-west).
Around Lexden
We work in homes and buildings around Lexden Park, Prettygate Infant School and The Sun Inn. For rail, the closest station is Colchester station, roughly 1.6 miles north-east. Nearby you’ll also find Essex County Hospital (1 mile east) and Lion Walk (1.5 miles east). For a walk, there’s Lexden Gathering Grounds.
The process
We bring everything the job needs with us, so there’s nothing for you to buy. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a few hours for a handful of joints, longer for a whole elevation. For a job in Lexden, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Mention any leaks or damp you’ve noticed
- Keep children and pets away from the work area
- Mention if the joints have been sealed before
Get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Read more
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Keep water from gutters off the wall
- Keep movement joints as flexible joints, not mortar
- Act on the first splits you see
- Tell anyone working on the walls about the movement joints
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established.
FAQs for Lexden
Do you cover smaller places like Lexden?
Yes. Lexden is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you cover Lexden for external mastic?
Yes, Lexden is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
How often do external joints need resealing?
It varies from wall to wall: joints on exposed walls or with a lot of movement age sooner. A yearly look will tell you when they need doing. Our work comes with a one-year guarantee.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
What sealant do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we’ll tell you what we are using.
Will there be a smell?
It depends on the product. Some products have a noticeable smell, others very little.
What information do you need?
A short description and the location, plus photos if you have them. We’ll ask anything else we need to know.
Do you need external mastic in Lexden?
Buildings move more than people expect. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
The problems people usually mention when they call include:
- Brick movement joints where the sealant has split
- Gaps where render, brick and frames meet
- Rain getting behind render or cladding at a joint
- Moss and dirt in joints with no sealant left
For landlords with property near Colchester station, outside joints that have cracked can let damp into a rental, so check them between lets.
What your quote should include
- Whether all the old sealant comes out first
- Who does the work, and how experienced they are
- Are they insured?
- How long the guarantee is
How we quote for external mastic
We quote each job individually. This is what makes a difference:
- The old material and how stubborn it is
- The size of the job
- How many rooms, windows or areas are involved
- The type of sealant required
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re not sure whether it needs doing, phone 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
Asking for a quote
Before you ask for a quote, have a think about:
- Access, such as stairs, a lift or height
- If someone has resealed it before
- Where the property is
- What the problem is, such as mould, gaps, leaks or cracking
For a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before work begins.
Why deal with it now?
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. In an older home around Lexden, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
Doing several joints on one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
What you get with us
- 20+ years of sealant experience
- Neat joints and a tidy finish
- Anti-fungal sanitary silicone in wet areas
- Trusted Arbo and Everbuild sealants
Take a look at our cost guide or our reviews.
Should I try it myself first?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
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 fails, we can still redo it.
Honest limits
In fairness, some problems need a different trade:
- Walls that need new movement joints cut into them
- Cracks in the bricks or render themselves, away from the joints
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If in doubt, phone 0345 464 0079 or email us and we will say what we think before booking.
Where we work in Lexden
- Concrete & block
- Copings & trims
- Façade panels
- Render & cladding joints
- Brickwork movement joints
- Joints between brick and frames