Hertfordshire · England
External & façade joints in Broxbourne, Hertfordshire
Specialist external mastic for Broxbourne: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Leaking joints around cladding and façade panels
- Movement joints filled with mortar instead of sealant
- Failed seals between different materials
When something else is needed
We’ll always be straight with you, so here’s what sealant cannot fix:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Render that’s blown, hollow or coming away
- Cracking across the wall rather than at a joint
If you are not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before you book.
What we seal
- Joints between brick and frames
- Façade panels
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
- Copings & trims
External mastic in Broxbourne, done properly
Getting the depth right is half the job. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, leaving it bonded to two faces so it can move with the wall. If you are dealing with failed seals between different materials and old sealant gone brittle and cracked, we can put it right, on façade panels, render & cladding joints and copings & trims alike.
In a smaller place like Broxbourne, some homes face open ground, so exposed walls and rooflines take more wind-driven rain. That’s where gutter joints and wall joints tend to fail first.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Location
- Broxbourne (EN10, EN11)
- Wider area
- Hertfordshire
- Guarantee
- One year on every job
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the quote in Broxbourne
For a quick quote, just ask. The main things that affect it are:
- The type of sealant required
- The size of the job
- How many rooms, windows or areas are involved
- Access and height
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, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
- A few pictures by email, if you can
- What’s wrong with the joints now
We quote each job on its own. Just ring 0345 464 0079 or email us with the details and send pictures if you have them.
Your questions about external mastic in Broxbourne
Do you cover smaller places like Broxbourne?
Yes. Broxbourne is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you help a landlord with a rental near Broxbourne station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear price.
How long should I leave it?
Different products cure at different speeds, so please follow the time we give you.
How long does the job take?
Most jobs take anything from a few hours to several days, depending on the building, including preparation and clearing up. Your quote will say how long we expect yours to take.
Is it OK to fill a movement joint with cement?
No, not if it’s a movement joint. Filling it with mortar defeats its purpose and can lead to cracking. A flexible sealant is the right fill.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and we will quote it together.
What do you need from me for a quote?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply phone 0345 464 0079 or email us.
Do you seal joints where cladding meets other materials?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. We pick a colour that works with both materials.
Also near Broxbourne
More services for Broxbourne
Why act early in Broxbourne
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That protects surfaces like brick, render and concrete. Too stiff a sealant can pull at the edges and break them. In an older home around Broxbourne, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Why Broxbourne customers choose us
- Sealant colour chosen to suit
- Over 20 years’ experience
- Approved under the ARBOMaster scheme
- 180+ five-star Google reviews
Take a look at what affects the cost and what customers say.
What the job involves on each surface
Concrete and blockwork
Concrete faces can be dusty and porous, so cleaning and priming matter. A primer goes on where the product requires one.
Copings and trims
Coping joints that leak let water straight down into the wall. Resealing them is a small job that protects a lot.
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
How it works
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. It normally takes a few hours to a few days, depending on the length of joint and the access. In a smaller place like Broxbourne, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention if the joints have been sealed before
- Tell us if parking is tricky
Getting a quote
If you’re in Broxbourne and need external mastic, phone 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Advice
Walls and rooflines in Broxbourne
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Schools such as Sheredes Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Rented homes near Broxbourne station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Broxbourne is about 6 miles west of Harlow, in Hertfordshire. Homes, rented property, offices and hotels in Broxbourne can book us for external mastic, old or new, large or small. Every job comes with our 12-month guarantee. Broxbourne is one of 381 places in Hertfordshire where we work. You can also see our page for London, roughly 18 miles from Broxbourne.
All of EN10 and EN11 is covered for external mastic. You’ll find streets such as New Road, Cock Lane and Bell Lane. Broxbourne is on the A10 and A1170, so it’s easy for us to get to with everything needed for external mastic. Neighbouring places we cover for external mastic include Hoddesdon (1 mile north-east), High Leigh (1 mile north), Wormley (1 mile south), Goose Green (1 mile north-west) and Woollensbrook (1 mile north). Within a short drive, we also cover Stevenage (13 miles north-west), St Albans (13 miles west), Bishop's Stortford (11 miles north-east), Welwyn Garden City (8 miles north-west), Harpenden (15 miles west) and Cheshunt (3 miles south-west).
Near you in Broxbourne
Typical jobs here are in homes near The Golden Lion Inn, Barclay Park and Sheredes School and the streets around them. Broxbourne’s nearest station is Broxbourne station, roughly 0.5 miles east. A little further out are Barrowfield (3.7 miles north) and Lowewood Museum (0.5 miles north-east). Open spaces near Broxbourne include Cheshunt Lake and Danemead.
What we’re called out for in Broxbourne
If plants are growing out of a joint, the sealant has generally failed or was never there. Roots and dirt hold water against the wall.
It’s worth asking for a quote if you see:
- Weeds or debris growing in open joints
- Joints with sealant missing in places
- Old sealant gone brittle and cracked
- Water getting into walls through failed joints
Homes close to Church of St Augustine include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Before booking anyone
- When the joint can take water or movement
- Whether VAT is included
- How long the guarantee is
- Whether they’re fully insured