West Sussex · England
Mackerel's Common External Mastic
We cover Mackerel's Common for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Moss and dirt in joints with no sealant left
- Joints pointed up with cement by mistake
- Old sealant gone brittle and cracked
Why act early in Mackerel's Common
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. Too stiff a sealant can pull at the edges and break them. Where a wall is exposed, as many are in small places like Mackerel's Common, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Why choose Mr Mastic in Mackerel's Common
- Homes, businesses and hotels
- Colour picked to suit the job
- White, clear, grey or another colour, product permitting
- Colour agreed with you before any work starts
See what affects the cost and our reviews.
External mastic for homes and businesses in Mackerel's Common
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two where a rigid filler would soon crack. If you have weeds or debris growing in open joints and sealant that has lost its bond to the brick or render, we can help, on façade panels, joints between brick and frames and concrete & block alike.
Outside joints can only be sealed when they’re dry, so work in Mackerel's Common is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Your job is guaranteed for a year, as with all our work.
- Location
- Mackerel's Common (RH14)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Your questions about external mastic in Mackerel's Common
Do you cover Mackerel's Common for external mastic?
Yes. Our work covers London and the South East, and Mackerel's Common is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear quote.
Will you come out to Mackerel's Common?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures.
How long should I leave it?
It depends on the product and the temperature. We tell you how long to leave it before we go.
Do you use backing rod?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Can you seal joints between render and window frames?
Yes. Materials like render, brick, metal and uPVC all move differently, so the joint between them must be flexible. The sealant is matched to both sides.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Should I point up the gap in my brickwork?
No. Mortar locks the joint solid, so the wall cracks somewhere else instead. Use a flexible sealant with backing rod.
Outside joints around Mackerel's Common
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Petworth House (about 4.6 miles south-west) nearby, there’s older building stock in the area around Mackerel's Common 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.
For landlords with property near Billingshurst station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. For an older house near a landmark such as The Parish Church of St John the Baptist, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Mackerel's Common is about 10 miles west of Horsham, in West Sussex. Anywhere in RH14, we cover external mastic for homes and businesses. Our West Sussex coverage runs to 371 places, and Mackerel's Common is one of them. We also work in Crawley, about 16 miles from Mackerel's Common.
Work in RH14 works the same way as everywhere else we cover. Close by, we work in Kirdford (1 mile south), Plaistow (2 miles north), Ifold (2 miles north), Balls Cross (2 miles south-west) and Wisborough Green (2 miles south-east). Larger places within reach include Horsham (10 miles east), Broadfield (15 miles east), Storrington (9 miles south-east), Billingshurst (5 miles east), Bewbush (15 miles east) and Angmering (15 miles south).
Local landmarks in Mackerel's Common
Mackerel's Common’s nearest station is Billingshurst station, roughly 4.8 miles south-east. For a walk, there’s The Mens and Shillinglee Lake.
What happens on the day
You don’t need to clear the whole room or building, just the space around the work. We protect the rest, and the work takes a few hours for a handful of joints, longer for a whole elevation for a typical job. In a small place like Mackerel's Common, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- Both sides are cleaned back to sound material and primed if needed.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Let us know about earlier repairs to the joints
- Clear items away from the joints we are working on
Ask for a quote
Getting a quote is simple: tell us what needs doing and where. Photos by email help us understand the job, and we’ll take it from there.
Read more
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can go on one quote.
Places near Mackerel's Common
Other services in Mackerel's Common
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Quotes for external mastic in Mackerel's Common
Call for a quick quote. The main things that affect it are:
- Whether there’s mould to deal with
- The product the joint needs
- The amount of work
- When we can work, for business premises
What it costs depends on the amount of work, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before we start, so you know where you stand.
Helping us quote
To help us quote quickly, please include:
- If it’s domestic, commercial or a hotel
- Pictures of the joints, sent by email
- Access, such as stairs, a lift or height
- The problem you’ve noticed
Need a quote? Please call 0345 464 0079 or drop us an email with a few details. We will explain what we’d do and send you a clear quote before work begins.
Surface by surface
Joints between dissimilar materials
Different materials may need different primers. We prepare both faces so the sealant bonds properly.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. The movement joint takes that up, so its sealant has to stay flexible.
Honest limits
It helps to know what we cannot do too:
- Render that’s blown, hollow or coming away
- Rising or penetrating damp from elsewhere in the wall
- Walls that need new movement joints cut into them
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
Where we work in Mackerel's Common
- Copings & trims
- Joints between brick and frames
- Façade panels
- Render & cladding joints
- Brickwork movement joints
- Concrete & block