Essex · England
External & façade joints in Dedham, Essex
Problem with your movement joints in Dedham? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Rigid filler in a joint that should flex
- Moss and dirt in joints with no sealant left
- Joints where the bead has come unstuck
External mastic for homes and businesses in Dedham
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Some surfaces need a primer before sealing. Common call-outs are for cracked joints where brick meets render or frames and leaking joints around cladding and façade panels, across joints between brick and frames, façade panels and render & cladding joints.
Somewhere as small as Dedham, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
Your job is guaranteed for a year, as with all our work.
- Where
- Dedham (CO7)
- Region
- Essex
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the quote in Dedham
We quote each job individually. These are the things that affect it:
- The size of the job
- Which sealant suits the joint
- The number of rooms or windows
- Whether the work is at height
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
What to tell us for a quote
To help us quote quickly, please include:
- The problem you’ve noticed
- Any access issues, like height or stairs
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
The process
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we have agreed what’s being done, we protect the area and start. Most jobs take anything from a few hours to several days, depending on the building. For a village or hamlet like Dedham, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided 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.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Let us know if you’ve seen damp or leaks
- Mention any parking rules near the property
Ask for a quote
If you’re in Dedham and need external mastic, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
Read more
What external mastic looks like in Dedham
With historic houses such as Castle House (about 0.5 miles south-east) nearby, there’s older building stock in the area around Dedham as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as Dedham Church of England Voluntary Controlled Primary School, its movement joints, gutters and trims need looking after like any other building’s. For an older house near a landmark such as Parish Church of St Mary, an extension built onto an older house moves differently, and the joint between them takes the strain.
Dedham is about 6 miles north-east of Colchester, in Essex. Across the CO7 area, we can carry out external mastic at your property. Dedham is one of 644 towns and villages in Essex where we work for external mastic. For nearby work, see our Chelmsford page (26 miles or so).
Here we cover the CO7 postcode area for external mastic. That includes homes and businesses on High Street, School Lane and The Drift and the roads around them. Other places close to Dedham include Lamb Corner (1 mile south-west), Dedham Heath (1 mile south), Stratford St Mary (1 mile north-west), Ardleigh Heath (2 miles south) and Higham (2 miles north-west). Further out, we also cover Colchester (6 miles south-west), Clacton-on-Sea (13 miles south-east), Harwich (12 miles east), Camulodunum (7 miles south-west), Halstead (15 miles west) and Greenstead (5 miles south-west).
Local landmarks in Dedham
In Dedham, that means homes and buildings near The Sun Inn and East Bergholt High School and the streets around them. For rail, the closest station is Manningtree station, roughly 2.4 miles east. Nearby you will also find Severalls Hospital (4.9 miles south-west) and Little Wenham Castle (4.1 miles north-east). Open spaces near Dedham include Cattawade Marshes.
Landlord and commercial work in Dedham
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
What we’re called out for in Dedham
Some movement joints have been pointed up with mortar. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Keep an eye out for these signs:
- Joints pointed up with cement by mistake
- Damp patches traced to an open external joint
- Failed sealant between panels on a façade
- Failed seals between different materials
For landlords with property near Manningtree station, outside joints that have cracked can let damp into a rental, so check them between lets.
Comparing quotes
- Which colour the sealant will be
- How much experience the applicator has
- How the joint is cleaned and prepared
- The length of the guarantee
Surface by surface
Render joints
Render has movement joints and stop beads that need sealing. We reseal them with a flexible exterior sealant that suits the render colour.
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it or an approved alternative. Tell us what the building has when you get in touch.
Why act early in Dedham
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost, so the damage spreads beyond the joint. In a small place like Dedham, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Why Dedham customers choose us
- We leave the area clean and tidy
- We agree the colour with you first
- Anti-fungal sanitary silicone in wet areas
- An ARBOMaster approved applicator
Read what affects the cost and customer reviews.
Nearby places to Dedham
What else we do in Dedham
Dedham: your questions answered
Can you do external mastic in Dedham?
Yes, Dedham is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or email us with a few details of the job.
Is Dedham within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Do you work for hotels and businesses?
Yes. We can plan bigger jobs in stages to suit the site.
Is the work guaranteed?
Yes. Every job comes with our one-year guarantee.
How long does external mastic last?
It depends on the exposure, the movement and the product. Sealant is a maintenance item, so check the joints once a year and reseal when it splits.
What do you need from me for a quote?
The location, the problem and the rough size of the job. Photos by email help too.
Is it OK to seal over old sealant?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- Loose or hollow render, which needs re-rendering
- Cracking across the wall rather than at a joint
- Structural movement, which needs a surveyor or engineer
If you are not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
Surfaces we seal
- Copings & trims
- Façade panels
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames