Essex · England
Henham External Mastic
Problem with your movement joints in Henham? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Weeds or debris growing in open joints
- Joints where the bead has come unstuck
- Rain getting behind render or cladding at a joint
Signs you need external mastic in Henham
Sunlight, wet weather and frost wear exterior sealant down. Over the years it hardens, cracks on the surface and loses its give, so the next time the wall moves, it splits or pulls away.
People normally contact us after spotting something like this:
- Weathered mastic that no longer stretches
- Moss and dirt in joints with no sealant left
- Sealant pulling away from one side of the joint
- Leaking joints around cladding and façade panels
For site and facilities teams at buildings such as Henham and Ugley Primary and Nursery School, its movement joints, gutters and trims need looking after like any other building’s.
Questions to ask before you book
- What the cure time is
- Whether all the old sealant comes out first
- What product goes in the joint
- How the surfaces are prepared before sealing
External mastic in Henham, done properly
Short cuts in external joints show up within a season or two. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We strip the joint back and start again. If you have damp patches traced to an open external joint and moss and dirt in joints with no sealant left, we can help, whatever the surface.
External sealant needs dry, clean surfaces, so work around Henham is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Henham (CM22)
- Region
- Essex
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Should I try it myself first?
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.
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.
Honest limits
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Movement that is more than a sealant joint can take
- Cracking across the wall rather than at a joint
- Loose or hollow render, which needs re-rendering
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Where we work in Henham
- Joints between brick and frames
- Render & cladding joints
- Concrete & block
- Copings & trims
- Façade panels
- Brickwork movement joints
What we do, step by step
Once we are on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a few hours for a handful of joints, longer for a whole elevation. In a small place like Henham, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Mention any tricky access
- Mention any sign-in or site rules at work premises
Get a quote
For external mastic in Henham, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Advice
Towns and villages near Henham
More services for Henham
Why deal with it now?
A failed movement joint lets water into the wall and can run behind render or cladding. Dealing with it early keeps the repair to the joint, instead of the wall and finishes around it. In a small place like Henham, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, phone 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why us?
- We’re fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
- Quality sealants from Arbo and Everbuild
- Experience in homes, commercial sites and hotels
See what affects the cost and what customers say.
What external mastic looks like in Henham
With historic houses such as Horham Hall (about 2.7 miles east) nearby, there’s older building stock in the area around Henham as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. 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.
For an older house near a landmark such as Church of St Mary the Virgin, old and new materials meet at the roofline and walls, which is where sealant earns its keep. If you let a flat or house near Elsenham station, outside joints that have cracked can let damp into a rental, so check them between lets.
Henham is about 6 miles north-east of Bishop's Stortford, in Essex. Our applicators cover external mastic for homes and businesses in Henham and the surrounding area. Our Essex coverage runs to 644 places, and Henham is one of them. Our Chelmsford page covers work nearby, about 17 miles away.
Every address in CM22 is covered for external mastic. We cover properties on High Street, The Row and Crow Street. Other places close to Henham include Elsenham (2 miles south-west), Ugley Green (2 miles south-west), Fuller's End (2 miles south-west), Ugley (2 miles west) and Broxted (2 miles east). Within a short drive, we also cover Braintree (14 miles east), Harlow (13 miles south-west), Saffron Walden (6 miles north), Great Dunmow (6 miles south-east), Stansted Mountfitchet (3 miles south-west) and Great Notley (13 miles east).
What’s near Henham
Locally, jobs take us to homes and businesses close to The Cock Inn. The nearest railway station is Elsenham station, about 1.2 miles south-west. Other landmarks nearby include Little Easton Moat (4.7 miles south-east) and Herts and Essex Hospital (5.6 miles south-west). Not far away are Aubrey Buxton Nature Reserve.
Common questions in Henham
I let a flat near Elsenham station. Can you help?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will send you a clear quote.
Can you do external mastic in Henham?
Yes. We work across London and the South East, and Henham is part of that. You can call 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear price.
What should I tell you?
A short description and the location, with photos by email if possible. We will ask anything else we need to know.
Does someone need to be in?
If the work is inside, we need someone to let us in. Once we have agreed the job, you do not need to watch us work.
Is it OK to seal over old sealant?
No, because it fails. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
How much does external mastic cost in Henham?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
When will the joints need doing again?
It varies from wall to wall: sunny, exposed elevations and busy joints wear faster. Check them each year and reseal when they split or harden. Our work comes with a 12-month guarantee.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses.
Different surfaces, different methods
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. The sealant is chosen with that in mind.
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Show decorators and builders where the movement joints are
- Check the sealant is paintable before painting near it
- Wash walls gently around the sealant
- Never let anyone fill a movement joint with mortar
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years.