Essex · England
External & façade joints in Hempstead, Essex
External mastic across Hempstead and nearby, with every bit of old sealant taken out first and a one-year guarantee.
- Sealant pulling away from one side of the joint
- Rain getting behind render or cladding at a joint
- Weeds or debris growing in open joints
External mastic in Hempstead
On houses, flats and commercial buildings across Hempstead, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean joint faces and the right depth. We work on render & cladding joints, brickwork movement joints and façade panels, and common reasons people get in touch are old sealant gone brittle and cracked and movement joints filled with mortar instead of sealant.
Around Hempstead, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.
All of our work is guaranteed for twelve months.
- Place
- Hempstead (CB10)
- Region
- Essex
- Guarantee
- 12 months on all our work
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
External mastic in Hempstead: local notes
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Around Hempstead, as everywhere, external mastic is only as good as the preparation behind it.
Hempstead is in Essex. For external mastic in and around Hempstead, please ring 0345 464 0079 or drop us an email for a quick quote. We are based in Crawley and cover Essex, Hempstead included. Our Essex coverage runs to 644 places, Hempstead among them. Our Chelmsford page covers work nearby, about 20 miles away.
All of CB10 is covered for external mastic. If you need external mastic at a property on High Street, Church Road and Harvey Way or a nearby road, our applicators can take on the job. Neighbouring places we cover for external mastic include The Common (2 miles west), Radwinter (2 miles west), Maple End (2 miles west), Wimbish (3 miles south-west) and Steventon End (4 miles north-west). Further out, we also cover Braintree (12 miles south-east), Saffron Walden (6 miles west), Halstead (12 miles south-east), Great Dunmow (10 miles south), Stansted Mountfitchet (11 miles south-west) and Great Notley (12 miles south-east).
Landmarks near Hempstead
Locally, jobs take us to homes and businesses close to Rose And Crown Inn and the streets around them. A little further out are Castle Camps (2.7 miles north) and Saffron Walden Community Hospital (5.3 miles west). Green spaces nearby include West Wood.
What we are called out for in Hempstead
Using the wrong sealant is another common reason. A high-modulus or general-purpose sealant can be too rigid for a busy joint, so it pulls away from the edges.
These are the problems we’re asked about most:
- Hard, crazed mastic that has stopped moving
- Panel joints letting water in
- Gaps where render, brick and frames meet
- Joints pointed up with cement by mistake
For an older house near a landmark such as Church of St Andrew, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Questions to ask before booking
- How hidden problems are handled
- Whether VAT is included
- How long the guarantee is
- Who does the work, and how experienced they are
Should I try it myself first?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Why deal with it now?
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost around the joint, so the damage spreads beyond the joint. Where a wall is exposed, as many are in small places like Hempstead, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
Why us?
- Domestic, commercial and hotel work
- An ARBOMaster approved applicator
- A sealant colour to suit the surroundings
- Rated 4.9 stars on Google
Read how sealant jobs are priced and our reviews.
Keeping the joints in good condition
A little care helps the new joints last. Our advice:
- Act on the first splits you see
- Check external joints each spring
- Avoid pressure-washing directly into sealant joints
- Keep soil, plants and ivy away from the joints
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.
What happens on the day
You do not need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the work takes anything from a few hours to several days, depending on the building for a typical job. Somewhere like Hempstead needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Let us know if you’ve seen damp or leaks
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
To get a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
Related advice
Quotes for external mastic in Hempstead
The price is agreed before any work begins. It takes into account:
- The product the joint needs
- Any mould that needs treating
- How many areas need sealing
- Whether old sealant or filler has to be cut out
Doing several joints on one visit is generally more efficient than separate visits. You’ll get one clear quote for the whole job.
What to tell us for a quote
When you contact us, it’s useful to know:
- What the problem is, such as mould, gaps, leaks or cracking
- The address or postcode of the job
- How we’d reach the joints
- If it’s domestic, commercial or a hotel
Asking for a quote is easy: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job.
FAQs for Hempstead
Will you come out to Hempstead?
Yes. Hempstead 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.
What guarantee comes with external mastic in Hempstead?
Every job comes with our one-year guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Can you match the colour of my brickwork?
We choose a sealant colour to suit the brick, stone or render so the joint blends in. There’s a wide choice of exterior colours.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
Is it messy?
We keep the work tidy. Nearby surfaces are protected.
I’m a tenant. Can you help?
Yes, but check with your landlord or agent first. Many landlords are glad to have it sorted.
Do I have to be there?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Surface by surface
Render joints
Water behind render can lead to blown patches. A sound joint keeps the render dry behind and helps it last.
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. A primer goes on where the product requires one before the bead.