West Sussex · England
External & façade joints in North Heath, West Sussex
We cover North Heath for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Joints where the bead has come unstuck
- Brick movement joints where the sealant has split
- Weeds or debris growing in open joints
External mastic for homes and businesses in North Heath
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Porous or awkward surfaces are primed where the sealant needs it. Typical jobs include sealant pulling away from one side of the joint and movement joints filled with mortar instead of sealant, across concrete & block, joints between brick and frames and copings & trims.
Outside joints can only be sealed when they’re dry, so work in North Heath is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Big or small, it’s backed by our 12-month guarantee in North Heath and across West Sussex.
- Place
- North Heath (RH20)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What affects the quote in North Heath
Every job gets its own quote. These are the things that affect it:
- Whether there’s mould to deal with
- How much old sealant there is and how hard it is to remove
- The size of the job
- The product the joint needs
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Call for a quick quote and we’ll go through it with you.
Helping us quote
Photos help, but a description is a good start. Please mention:
- A few photos by email, if you can
- What’s wrong with the joints now
- Access, such as stairs, a lift or height
- Whether it has been sealed before
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. When it suits you, ring 0345 464 0079 or drop us an email.
Honest limits
We’d rather tell you now than do work that will not last, so these are the limits:
- Cracks in the bricks or render themselves, away from the joints
- Subsidence or other structural problems
- Failed render or damaged cladding panels
If you’re not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Surfaces we seal
- Render & cladding joints
- Copings & trims
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
- Façade panels
FAQs for North Heath
Do you cover North Heath for external mastic?
Yes, North Heath is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing.
Is North Heath within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you work for letting agents?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels across West Sussex.
Can you seal joints between two different materials?
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.
Will the new joint stand out?
We choose a sealant colour to suit the brick, stone or render so the joint blends in. There’s a wide choice of exterior colours.
Can you seal over the old sealant?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
What should I tell you?
A short description and the location, plus pictures if you have them. If we need more, we’ll ask.
Keeping the joints in good condition
Simple care keeps the joints in good condition. We recommend:
- Point out the joints to other trades
- Keep soil, plants and ivy away from the joints
- Deal with leaking gutters that soak the joints below
- Walk round the building once a year and look at the joints
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick.
Landlord and commercial work in North Heath
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
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 be quoted together.
Surface by surface
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind and protects the render itself.
Joints between dissimilar materials
Wherever two materials meet, they move differently. We seal the joint with a flexible exterior sealant so neither cracks the other.
What happens on the day
There isn’t much for you to do on the day. Point us to the joints and we’ll get on with it. The job generally takes a few hours to a few days, depending on the length of joint and the access from start to finish. Somewhere as small as North Heath, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Tell us about any water getting in
- Let us know about stairs, lifts or work at height
- Clear the area around the work
Getting a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that is easy.
Related advice
Nearby places to North Heath
Also in North Heath
Common problems we fix in North Heath
The wrong product in a moving joint is a classic cause. A high-modulus or general-purpose sealant can be too rigid for a busy joint, so it pulls away from the edges.
If you can see any of these, it’s time to have the joints looked at:
- Sealant that has lost its bond to the brick or render
- Failed sealant between panels on a façade
- Hard, crazed mastic that has stopped moving
- Water getting into walls through failed joints
Old Place Manor, about 2.1 miles south-west, is one of the historic houses in the wider area around North Heath.
What your quote should include
- What preparation is included
- What happens if the job turns out different
- When the joint can take water or movement
- Whether they seal over old material or remove it
Walls and rooflines in North Heath
Historic houses like Old Place Manor (about 2.1 miles south-west) are a reminder that the area around North Heath has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Letting a property close to Pulborough station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
North Heath is about 9 miles south-west of Horsham, in West Sussex. Homes, rented property, offices and hotels in North Heath is covered for external mastic, old or new, large or small. Every job comes with our one-year guarantee. Our area takes in 371 places across West Sussex. There’s also a page for Crawley, about 15 miles away.
Here we cover the RH20 postcode area for external mastic. Local streets include Gay Street Lane and Stane Street, and we cover them all. Neighbouring places we cover for external mastic include Gay Street (1 mile south-east), Adversane (1 mile north), Codmore Hill (1 mile south-west), Broomershill (1 mile south) and Nutbourne (2 miles south). Larger places within reach include Crawley (15 miles north-east), Horsham (9 miles north-east), Worthing (11 miles south), Burgess Hill (15 miles east), Littlehampton (12 miles south) and Shoreham-by-Sea (14 miles south-east).
Near you in North Heath
North Heath’s nearest station is Pulborough station, roughly 2.4 miles south-west of the centre. For a walk, there’s The Mens.