Essex · England
External Mastic in Daws Heath
Sealing brickwork movement joints, render, cladding and façade joints in Daws Heath, with a one-year guarantee on every job. Call for a quick quote.
- Old sealant gone brittle and cracked
- Joints where the bead has come unstuck
- Movement joints filled with mortar instead of sealant
About our external mastic in Daws Heath
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. We work on façade panels, copings & trims and brickwork movement joints, and people most often call us about movement joints filled with mortar instead of sealant and gaps where render, brick and frames meet.
Around Daws Heath, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water normally gets in, and they need the right sealant at the right depth.
All our work comes with a 12-month guarantee.
- Location
- Daws Heath (SS7)
- Wider area
- Essex
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What affects the quote in Daws Heath
Some jobs are bigger than they look, and some smaller. The main factors:
- Any mould that needs treating
- The number of rooms or windows
- Whether the work is at height
- The product the joint needs
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Photos by email, if that’s easy
- Access, such as stairs, a lift or height
- Where the property is
- If someone has resealed it before
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 will have a clear quote before any work starts.
Also near Daws Heath
Also in Daws Heath
Aftercare tips
Good habits help new joints last longer. Our tips:
- Clear growth from the base of walls and joints
- Keep water from gutters off the wall
- Keep movement joints as flexible joints, not mortar
- Tell anyone working on the walls about the movement joints
Do not let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Questions from Daws Heath
Is Daws Heath within the area you cover?
Yes, Daws Heath is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Does the coastal weather in Daws Heath affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
What does external mastic cost?
Size, access and the old material all affect the cost. Call for a quick quote.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Will there be a smell?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
Should I point up the gap in my brickwork?
No. A mortar-filled joint cannot move, so the movement cracks the wall elsewhere. Use a flexible sealant with backing rod.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. Our applicators cover Daws Heath, along with the rest of our area.
Landlords, agents and businesses in Daws Heath
We also work for property managers and facilities teams. We can quote a run of properties together.
If you manage several properties in or around Daws Heath, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs.
What we do, step by step
The work is kept neat and contained to the joints we are treating, so you can get on with your day. Expect the work to take a few hours for a handful of joints, longer for a whole elevation. In a small place like Daws Heath, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Tell us if parking is tricky
- Let us know about earlier repairs to the joints
- On commercial sites, let us know about site rules
Ask for a quote
If you’re in Daws Heath and need external mastic, ring 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before we start.
Related advice
Daws Heath buildings and the weather
Daws Heath is within about 3 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. 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.
Letting a property close to Rayleigh station? Then split movement joints are easy to miss on a rental until damp shows inside. Managing a site like The Deanes School? Then larger buildings have long runs of movement joint that eventually need resealing.
Daws Heath is about 1 mile east of Thundersley, in Essex. Homes, rented property, offices and hotels in Daws Heath is covered for external mastic, old or new, large or small. The work is guaranteed for a year. Across Essex, we cover 644 places, Daws Heath among them. There’s also a page for Chelmsford, about 13 miles away.
Here we cover the SS7 postcode area for external mastic. External mastic is available to properties on Western Road, Wyburn Road and Marlin Close and the roads around them. We also cover the places around Daws Heath: Hadleigh (1 mile south), Rayleigh (2 miles north), Leigh-on-Sea (2 miles south-east), Eastwood (2 miles east) and Stroud Green (3 miles east). Within a short drive, we also cover Chelmsford (13 miles north-west), Basildon (7 miles west), Brentwood (14 miles west), Maldon (11 miles north), Canvey Island (3 miles south) and Billericay (9 miles north-west).
What’s near Daws Heath
Around Daws Heath, our work takes us to homes and buildings near Hadleigh Farm and Westwood Academy. For rail, the closest station is Rayleigh station, about 1.6 miles north of the centre. Well-known places in the area include Bay Museum (3.9 miles south) and Chartwell Private Hospital (1.7 miles south-east). For a walk, there’s Pound Wood.
Do you need external mastic in Daws Heath?
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it can’t stretch and rips as the joint opens.
If you can see any of these, it’s time to have the joints looked at:
- Plants rooting in failed movement joints
- Joints with sealant missing in places
- Water getting into walls through failed joints
- Sealant pulling away from one side of the joint
In the older streets around St Michael's and All Angels, an extension built onto an older house moves differently, and the joint between them takes the strain.
What to look for in a quote
- Whether you can choose the colour
- How much experience the applicator has
- What preparation is included
- What happens if they find a problem under the old sealant
How the job changes by surface
Copings and trims
Metal and stone copings both move with temperature, so the joints need a sealant that stays flexible in all weathers.
Concrete and blockwork
Big joints in concrete need careful depth control. Backing rod sized to the joint sets it so the sealant isn’t too deep.
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.