Essex · England
External & façade joints in Runwell, Essex
Movement joints in Runwell need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Movement joints filled with mortar instead of sealant
- Rain getting behind render or cladding at a joint
- Failed seals between different materials
How we handle external mastic in Runwell
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 colour to suit. We work on joints between brick and frames, concrete & block and façade panels, and people most often call us about joints with sealant missing in places and leaking joints around cladding and façade panels.
Houses in smaller places like Runwell can stand more in the open than those in a built-up town, so exposed walls and rooflines take more wind-driven rain. Joints on those sides are generally the first to go.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Runwell (SS11)
- Wider area
- Essex
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What we do, step by step
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it normally takes a few hours to a few days, depending on the length of joint and the access. A visit to Runwell is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- 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.
Preparing for the visit
- Tell us if parking is tricky
- Let us know if you’ve seen damp or leaks
- Let us know about stairs, lifts or work at height
Getting a quote
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we will take it from there.
Related advice
What the job involves on each surface
Cladding and façade panels
If the façade has a specified sealant, that’s what we use. Send us any details you have about the façade.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
Do you need external mastic in Runwell?
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
Look out for any of the following:
- Sealant pulling away from one side of the joint
- Moss and dirt in joints with no sealant left
- Damp patches traced to an open external joint
- Movement joints filled with mortar instead of sealant
If you let a flat or house near Wickford station, outside joints that have cracked can let damp into a rental, so check them between lets.
What to look for in a quote
- Whether you can choose the colour
- How long to leave it before use
- What insurance they hold
- What happens if the job turns out different
Nearby places to Runwell
Other services in Runwell
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Walls and rooflines in Runwell
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.
For site and facilities teams at buildings such as Runwell Community Primary School, larger buildings have long runs of movement joint that eventually need resealing. In the older streets around Church of St Mary, an extension built onto an older house moves differently, and the joint between them takes the strain.
Runwell is about 1 mile north of Wickford, in Essex. Runwell gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Runwell is one of 644 places in Essex where we work. For nearby work, see our Chelmsford page, about 8 miles away.
Every address in SS11 is within our area for external mastic, from the main roads to the quietest streets. That includes homes and businesses on Church End Lane, Viking Way and Canewdon Gardens and the roads around them. Other places close to Runwell include Wickford (1 mile south), Brock Hill (1 mile north-west), Shotgate (2 miles south-east), Battlesbridge (2 miles east) and South Hanningfield (2 miles north). Within a short drive, we also cover Chelmsford (8 miles north), Basildon (5 miles south-west), Brentwood (9 miles west), Maldon (10 miles north-east), Canvey Island (7 miles south) and Billericay (4 miles west).
Near you in Runwell
Around Runwell, our work takes us to homes and buildings near Beauchamps High School and Quart Pot pub and the streets around them. The nearest railway station is Wickford station, roughly 0.7 miles south-west. A little further out are Rayleigh Castle (4.2 miles south-east) and Battlesbridge Motorcycle Museum (1.9 miles east). For a walk, there’s Shotgate Thickets.
What affects the cost of external mastic
Every job gets its own quote. These are the things that affect it:
- Which sealant suits the joint
- Whether old sealant or filler has to be cut out
- Whether there’s mould to deal with
- The number of rooms or windows
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
Helping us quote
You do not need to know the technical terms. It helps if you can tell us:
- The problem you’ve noticed
- The address or postcode of the job
- If someone has resealed it before
- A few pictures by email, if you can
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Why it’s worth doing now in Runwell
Sealing over the top of old mastic doesn’t hold for long. New sealant does not bond well to old, weathered sealant, so the old joint is cut out fully first. Around Runwell, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
Doing several joints on one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Why us?
- 20+ years of sealant experience
- We’re fully insured
- You choose the colour before work begins
- We leave the area clean and tidy
Take a look at what affects the cost and what customers say.
Common questions in Runwell
I let a flat near Wickford station. Can you help?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
Do you cover smaller places like Runwell?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Are you fully insured?
Yes. We are fully insured.
Can you do several jobs on one visit?
Of course. Doing several areas at once is usually more efficient, so mention them when you ask for a quote.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
How long will you be here?
That depends on how much there is to do, but most jobs take a few hours to a few days, depending on the length of joint and the access. We’ll tell you when we quote.
How much does external mastic cost in Runwell?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or email us and tell us what needs doing and where.
What sealant work can’t fix
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Failed render or damaged cladding panels
- Subsidence or other structural problems
- 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’ll say what we think before you book.
What we seal
- Copings & trims
- Render & cladding joints
- Concrete & block
- Façade panels
- Joints between brick and frames
- Brickwork movement joints