Essex · England
Felsted External Mastic
Professional external mastic in and around Felsted, with every bit of old sealant taken out first and a one-year guarantee.
- Hard, crazed mastic that has stopped moving
- Moss and dirt in joints with no sealant left
- Gaps where render, brick and frames meet
How we handle external mastic in Felsted
We are ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Some surfaces need a primer before sealing and we use one wherever it does. Common call-outs are for old sealant gone brittle and cracked and rain getting behind render or cladding at a joint, across joints between brick and frames, brickwork movement joints and render & cladding joints.
External sealant needs dry, clean surfaces, so work around Felsted is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
Every job is covered by a 12-month guarantee.
- Location
- Felsted (CM6)
- Wider area
- Essex
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What affects the quote in Felsted
The quote reflects the job in front of us. We take into account:
- How many rooms, windows or areas are involved
- Any mould that needs treating
- Whether the work is at height
- When we can work, for business premises
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
What we need to know
There’s no need for technical detail. Just tell us:
- Access, such as stairs, a lift or height
- Where the job is, and your postcode
- Whether it has been sealed before
- The type of property
For external mastic in Felsted, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Different surfaces, different methods
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
Concrete and blockwork
Concrete faces can be dusty and porous, so preparation is key. A primer goes on where the product requires one before the bead.
Can I do it myself?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Common questions in Felsted
Is there a guarantee on external mastic in Felsted?
Every job comes with our one-year guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Do you cover smaller places like Felsted?
Yes. Felsted is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us and we’re fully insured.
Why do you put foam in the joint first?
The foam is closed-cell backing rod. It keeps the sealant at the right depth and bonded to the sides only.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Will the new joint stand out?
We aim for a joint that suits the wall rather than one that jumps out. We will talk through colour options before we start, matched as closely as the range allows.
Can tenants book the work?
Yes, but check with your landlord or agent first. Many landlords are glad to have it sorted.
Why is there a gap in my brick wall?
A vertical gap in a long brick wall is generally a movement joint. It gives the wall room to move and needs a flexible seal, not mortar.
Signs you need external mastic in Felsted
A lot of failed joints come down to preparation: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
Keep an eye out for these signs:
- Damp patches traced to an open external joint
- Panel joints letting water in
- Cracked joints where brick meets render or frames
- Plants rooting in failed movement joints
Managing a site like Felsted Primary School? Then larger buildings have long runs of movement joint that eventually need resealing.
What your quote should include
- What preparation is included
- Is the old sealant removed completely?
- Is VAT in the price?
- How hidden problems are handled
Places near Felsted
Other services in Felsted
What external mastic looks like in Felsted
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 the Holy Cross, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Felsted is about 6 miles west of Braintree, in Essex. For external mastic in and around Felsted, please ring 0345 464 0079 or drop us an email for a quick quote. We cover Essex from our Crawley base, Felsted included. Felsted is one of 644 towns and villages in Essex we cover. There’s also a page for Chelmsford, roughly 9 miles from Felsted.
We work across the CM6 postcode area for external mastic. We cover properties on Station Road, Braintree Road and Chelmsford Road. Other places close to Felsted include Causeway End (1 mile south), Watch House Green (1 mile north-east), Little Dunmow (1 mile west), Bannister Green (1 mile east) and Brookstreet (1 mile west). We also work in nearby towns such as Chelmsford (9 miles south), Braintree (6 miles east), Harlow (15 miles south-west), Maldon (14 miles south-east), Witham (9 miles south-east) and Saffron Walden (14 miles north-west).
Around Felsted
In Felsted, that means homes and buildings near The Chequers pub. Nearby you’ll also find Little Easton Moat (4.9 miles north-west) and Braintree Community Hospital (4.6 miles east). The countryside around Felsted includes Phyllis Currie Nature Reserve.
How it works
There is not much for you to do on the day. Show us the job and we will take it from there. The work itself takes anything from a few hours to several days, depending on the building, including the tidy-up. For a village or hamlet like Felsted, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Mention any tricky access
- Plan for the work area to be out of bounds to pets and children
- Clear the area around the work
Ask for a quote
For a quote, call 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Read more
When it is not the sealant
It helps to know what we cannot do too:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cutting new joints into brickwork, which is building work rather than sealant work
- Subsidence or other structural problems
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer.
Surfaces we seal
- Copings & trims
- Brickwork movement joints
- Façade panels
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
Why deal with it now?
Mortar or ordinary filler might look like a quick way to close an open joint, but it stops the joint moving. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. Where a wall is exposed, as many are in small places like Felsted, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Why Felsted customers choose us
- Approved under the ARBOMaster scheme
- Arbo and Everbuild products
- Rated 4.9 stars on Google
- Domestic, commercial and hotel work
See our cost guide or customer reviews.