West Sussex · England
External & façade joints in Woodmancote, West Sussex
External mastic for Woodmancote, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Gaps where render, brick and frames meet
- Sealant that has lost its bond to the brick or render
- Movement joints filled with mortar instead of sealant
FAQs for Woodmancote
Is external mastic in a coastal place like Woodmancote any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. Walls facing the sea are generally the first to need attention.
Is Woodmancote within the area you cover?
Yes, Woodmancote is covered. 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.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We’ll tell you how long to leave the joint before we leave.
Can you seal joints between render and window frames?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. The colour is chosen to suit.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us.
When will the joints need doing again?
It varies from wall to wall: sunny, exposed elevations and busy joints wear faster. Check them each year and reseal when they split or harden. Every job carries our one-year guarantee.
Is it OK to seal over old sealant?
No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
About our external mastic in Woodmancote
External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We take the old material out and do it properly. We’re often asked to deal with hard, crazed mastic that has stopped moving and plants rooting in failed movement joints, on concrete & block, façade panels and copings & trims.
Older homes in small places like Woodmancote may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water generally gets in.
You get a 12-month guarantee, the same in Woodmancote as everywhere else we work.
- Location
- Woodmancote (PO10)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What we do, step by step
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours to a few days, depending on the length of joint and the access and we leave things clean and tidy. Somewhere like Woodmancote 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.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Tell us about any water getting in
- Plan for the work area to be out of bounds to pets and children
- For business premises, tell us about site rules or sign-in
How to get a quote
We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or drop us an email.
Related advice
Why deal with it now?
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The wall then cracks somewhere else. The correct repair is a flexible sealant with the right backing. Where a wall is exposed, as many are in small places like Woodmancote, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we’ll explain the quote if you ask.
What you get with us
- Every job guaranteed for a year
- Colour picked to suit the job
- Any old sealant cut out fully, not covered over
- Homes, businesses and hotels
Read our cost guide and what customers say.
What the job involves on each surface
Copings and trims
Coping and trim joints face rain and sun head on. We reseal them with an exterior sealant suited to the material.
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap and keep the sealant to the right depth.
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
What affects the cost of external mastic
You will get a clear quote before work begins. It’s based on:
- The number of rooms or windows
- The number and length of the joints
- The product the joint needs
- Any working-time requirements on site
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, call 0345 464 0079 or email us for an honest opinion and a quote.
Helping us quote
When you contact us, these details help:
- Whether it has been sealed before
- Photos by email, if that’s easy
- What’s wrong with the joints now
- Roughly how big the job is
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.
Signs you need external mastic in Woodmancote
Some movement joints have been pointed up with mortar, often by someone who didn’t know what it was for. The joint can’t move, so the wall cracks somewhere else instead.
These are the problems we’re asked about most:
- Joints pointed up with cement by mistake
- Sealant pulling away from one side of the joint
- Joints with sealant missing in places
- Weeds or debris growing in open joints
If you look after a building such as Bourne Community College, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Questions to ask before you book
- What the quote includes, VAT included or not
- Whether the sealant suits the joint
- Whether you can choose the colour
- How hidden problems are handled
Outside joints around Woodmancote
Woodmancote is close to 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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Southbourne station, split movement joints are easy to miss on a rental until damp shows inside. For an older house near a landmark such as Woodmancote Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Woodmancote is about 4 miles east of Havant, in West Sussex. Wherever you are in the PO10 postcode area, we cover external mastic for homes and businesses. Our area takes in 371 places across West Sussex, from the larger towns to small villages. We also work in Portsmouth, around 8 miles away.
All of PO10 is within our area for external mastic, from the main roads to the quietest streets. We cover properties on South Lane, Duffield Lane and Woodmancote Lane. Neighbouring places we cover for external mastic include Westbourne (1 mile west), Southbourne (1 mile south), Lumley (1 mile south-west), Emsworth (2 miles south-west) and Denvilles (3 miles west). Within a short drive, we also cover Bognor Regis (11 miles south-east), Chichester (6 miles east), Selsey (10 miles south-east), Portfield (6 miles east), Yapton (13 miles east) and East Wittering (7 miles south).
What’s near Woodmancote
In Woodmancote, that means homes and buildings near The Stag's Head Public House, Westbourne Primary School and Stansted Park, among other places. The closest station to Woodmancote is Southbourne station, about 0.9 miles south of the centre. Other landmarks nearby include Havant War Memorial Hospital (3.7 miles west) and Warblington Castle (2.9 miles south-west). Green spaces nearby include Stoke Down and Brook Meadow (Emsworth).
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Check external joints each spring
- Point out the joints to other trades
- Keep water from gutters off the wall
- Leave the joints unpainted unless we have said otherwise
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They must stay as flexible joints, never rendered or pointed over.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.