Hertfordshire · England
External & façade joints in Wormley, Hertfordshire
Sealing brickwork movement joints, render, cladding and façade joints in Wormley, with a 12-month guarantee on every job. Ask us for a quote.
- Failed seals between different materials
- Water getting into walls through failed joints
- Movement joints filled with mortar instead of sealant
FAQs for Wormley
I let a flat near Broxbourne station. Can you help?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Can you do external mastic in Wormley?
Yes, Wormley 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, and we will give you a clear price.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status and we are fully insured too.
Where are you based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
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 the wall may crack nearby. We will reseal it with a flexible sealant.
How long does external mastic take?
As a guide, most jobs take anything from a few hours to several days, depending on the building. Larger jobs naturally take longer, and we will say how long yours will take.
Will the new joint stand out?
We aim for a joint that suits the wall rather than one that jumps out. We’ll talk through colour options before any work starts from the range available.
Will you leave a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
External mastic in Wormley, done properly
On houses, flats and commercial buildings across Wormley, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean joint faces and the right depth. If you have joints where the bead has come unstuck and damp patches traced to an open external joint, we can put it right, on façade panels, brickwork movement joints and joints between brick and frames alike.
In a smaller place like Wormley, 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.
A 12-month guarantee comes as standard, so you’re not left on your own once the job is done.
- Place
- Wormley (EN10)
- Wider area
- Hertfordshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How the job changes by surface
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant.
Render joints
Render is weaker at the surface than brick, so a low-modulus sealant is kinder to the joint edges. Priming is done where the sealant calls for it.
How the visit works
There is not much for you to do on the day. Point us to the joints and we’ll get on with it. The work itself takes a few hours to a few days, depending on the length of joint and the access from start to finish. For a job in Wormley, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Tell us if parking is tricky
- Tell us about any water getting in
- Let us know about earlier repairs to the joints
Ask for a quote
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, phone 0345 464 0079 or email us.
Advice
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Keep soil, plants and ivy away from the joints
- Point out the joints to other trades
- Keep movement joints as flexible joints, not mortar
- Walk round the building once a year and look at the joints
Keep pressure washers away from the sealant. High-pressure water can lift the edges and let water in behind.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Quotes for external mastic in Wormley
We quote each job individually. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- How easy the joints are to reach
- Any mould that needs treating
- The number and length of the joints
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or drop us an email.
Asking for a quote
What to tell us when you ask for a quote:
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
- A few photos by email, if you can
- Where the job is, and your postcode
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you are ready, phone 0345 464 0079 or drop us an email.
Also near Wormley
Other services in Wormley
Why act early in Wormley
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together. Homes in smaller places like Wormley can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
What you pay reflects the work, not guesswork. That’s why we ask about the job first.
What you get with us
- You choose the colour before work begins
- Quality sealants from Arbo and Everbuild
- We’re fully insured
- An ARBOMaster approved applicator
See our cost guide or customer reviews.
Common problems we fix in Wormley
UV, rain and frost all age exterior sealant. In time it goes hard, crazes on the surface and stops stretching, so the joint eventually tears or comes away from one side.
Look out for these signs:
- Moss and dirt in joints with no sealant left
- Brick movement joints where the sealant has split
- Hard, crazed mastic that has stopped moving
- Damp patches traced to an open external joint
Managing a site like Wormley Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Before you book anyone
- How the surfaces are prepared before sealing
- What guarantee comes with the work
- Which sealant they’ll use, and why
- What happens if they find a problem under the old sealant
For landlords and businesses
If you manage several properties in or around Wormley, several properties can go on one quote. Just tell us the addresses and what each one needs.
Landlords and letting agents in Wormley can book us as well as householders. Sealant work between tenants keeps a property looking cared for.
Wormley buildings and the weather
Historic houses like Forty Hall (about 4.7 miles south-west) are a reminder that the area around Wormley 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. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For an older house near a landmark such as Parish Church of St Lawrence, old and new materials meet at the roofline and walls, which is where sealant earns its keep. Letting a property close to Broxbourne station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Wormley is about 1 mile south of Broxbourne, in Hertfordshire. Every kind of property in Wormley is covered for external mastic. Every job comes with our 12-month guarantee. Wormley is one of 381 places in Hertfordshire we cover. London is on our list too, about 16 miles from Wormley.
Our applicators cover all of the EN10 postcode area for external mastic and the streets around it. Streets in the area include Slipe Lane, Wharf Road and Church Lane, and we cover them all. If you are just outside Wormley, we cover Turnford (1 mile south), Broxbourne (1 mile north), Hoddesdon (2 miles north), Wormley West End (2 miles west) and Cheshunt (2 miles south-west). Within a short drive, we also cover Stevenage (14 miles north-west), St Albans (13 miles west), Bishop's Stortford (12 miles north-east), Welwyn Garden City (9 miles north-west), Harpenden (15 miles north-west) and Hatfield (9 miles west).
Near you in Wormley
Typical jobs here are in homes near The Queens Head Public House, The Broxbourne School and Cheshunt Park. The closest station to Wormley is Broxbourne station, roughly 1.2 miles north-east of the centre. Other landmarks nearby include Nazeing Glass Museum (1.1 miles north-east) and Hertford County Hospital (5.2 miles north-west). Not far away are Danemead and Cheshunt Lake.