Essex · England
Lower Nazeing External Mastic
External mastic across Lower Nazeing and nearby, with old sealant always removed completely.
- Failed seals between different materials
- Movement joints with cracked, split or missing sealant
- Joints where the bead has come unstuck
How the job changes by surface
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. We reseal them with a low-modulus sealant over backing rod.
Joints between dissimilar materials
Where a frame or panel meets masonry, water often finds a way in. We cut out the old sealant and reseal with a product suited to both surfaces.
External mastic in Lower Nazeing, done properly
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall so the joint does not stand out. Common call-outs are for leaking joints around cladding and façade panels and damp patches traced to an open external joint, on joints between brick and frames, concrete & block and brickwork movement joints.
Houses in smaller places like Lower Nazeing can stand more in the open than those in a built-up town, so exposed walls and rooflines take more wind-driven rain. That is where gutter joints and wall joints tend to fail first.
Our work is backed for twelve months, in Lower Nazeing and everywhere else we cover.
- Location
- Lower Nazeing (EN9, CM19, EN10)
- Wider area
- Essex
- Cover
- A year, on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
Lower Nazeing buildings and the weather
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to St Giles include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move. For landlords with property near Broxbourne station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Schools such as Nazeing Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Lower Nazeing is about 2 miles south-east of Hoddesdon, in Essex. For external mastic in and around Lower Nazeing, please phone 0345 464 0079 or send us an email for a quick quote. We cover Essex from our Crawley base. We cover 644 towns and villages across Essex. There’s also a page for London, about 17 miles away.
Every address in EN9, CM19 and EN10 is covered for external mastic. Whether your property is on Shooters Drive, Banes Down and Western Road or anywhere close by, our applicators can take on the job. Neighbouring places we cover for external mastic include Nazeing (1 mile east), Bumble's Green (1 mile south-east), Roydon Hamlet (1 mile north-east), Halls Green (2 miles north-east) and Broadley Common (2 miles east). Within a short drive, we also cover Harlow (5 miles north-east), Brentwood (15 miles south-east), Loughton (7 miles south), Waltham Abbey (4 miles south), Epping (5 miles south-east) and Stansted Mountfitchet (14 miles north-east).
Around Lower Nazeing
Typical jobs here are in homes near The Broxbourne School and Nazeing Triangle. For rail, the closest station is Broxbourne station, roughly 1.3 miles north-west of the centre. A little further out are Princess Alexandra Hospital (3.7 miles north-east) and Nazeing Glass Museum (0.9 miles west). For a walk, there’s Cheshunt Lake and Danemead.
What happens if it’s left?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost, so the problem grows beyond the joint itself. In a smaller place like Lower Nazeing, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
The cost depends on how much there is to do, how much old material has to come out and access to the work. We give a clear quote before we start, so you know where you stand.
Why Lower Nazeing customers choose us
- ARBOMaster approved applicator
- Arbo and Everbuild products
- Rated 4.9 stars on Google
- White, clear, grey or another colour, product permitting
How we quote for external mastic
The quote reflects the job in front of us. We take into account:
- The product the joint needs
- Any mould that needs treating
- How much old sealant there is and how hard it is to remove
- How easy the joints are to reach
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
What to tell us for a quote
To help us quote quickly, let us know:
- Where the property is
- What’s wrong with the joints now
- Access, such as stairs, a lift or height
- Photos by email, if that’s easy
We quote each job on its own, so the first step is telling us about yours. Just call 0345 464 0079 or send us an email with the details, and pictures are welcome.
Also near Lower Nazeing
What else we do in Lower Nazeing
When it is not the sealant
New sealant can’t fix everything, and we’ll tell you before any work starts. It won’t solve:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracking across the wall rather than at a joint
- Movement that’s more than a sealant joint can take
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer.
Joints and surfaces we work on
- Copings & trims
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Concrete & block
- Brickwork movement joints
Your questions about external mastic in Lower Nazeing
Is Lower Nazeing within the area you cover?
Yes. Lower Nazeing 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.
Can you do external mastic in Lower Nazeing?
Yes, Lower Nazeing is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Can landlords and businesses book you?
Yes, regularly. We can quote for several properties at once.
Why is there a gap in my brick wall?
It’s a deliberate gap that lets the wall expand and contract without cracking. It should be filled with flexible sealant, never mortar.
Can you seal joints between two different materials?
Yes. Where different materials meet is one of the most common joints we seal. The sealant is chosen to bond to both sides.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Do you work at height?
It depends on the building. We work on joints that can be reached safely. Tell us about the building and we’ll confirm what access is needed.
Does someone need to be in?
It depends on the job. Inside work needs someone to give us access.
Keeping the joints in good condition
A little care helps the new joints last. Our advice:
- Make sure movement joints aren’t pointed over
- Ask before painting over external sealant
- Keep water from gutters off the wall
- Tell anyone working on the walls about the movement joints
Follow the cure time we give you before the joint is knocked or disturbed. Most exterior sealants skin fast but take longer to cure right through.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
The process
We keep the work tidy and contained to the joints we are treating, so you can carry on as normal. The job normally takes a few hours for a handful of joints, longer for a whole elevation. For a job in Lower Nazeing, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First, the joints are inspected and the access agreed.
- 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.
How to prepare
- Keep pets and children clear of the area while we work
- Let us know about stairs, lifts or work at height
- Tell us about any water getting in
Get a quote
For external mastic in Lower Nazeing, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.