West Sussex · England
External Mastic in Streat
Professional external mastic in and around Streat, with every bit of old sealant taken out first.
- Sealant pulling away from one side of the joint
- Joints with sealant missing in places
- Rigid filler in a joint that should flex
Why deal with it now?
It often makes sense to reseal all the failing joints on an elevation together. They’ve weathered the same way. Around Streat, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.
Why us?
- We never seal over old sealant
- Neat joints and a tidy finish
- Homes, businesses and hotels
- Arbo and Everbuild products
Read what affects the cost or what customers say.
About our external mastic in Streat
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall. If you have hard, crazed mastic that has stopped moving and brick movement joints where the sealant has split, we can put it right.
Older homes in small places like Streat may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water normally gets in, and they need the right sealant at the right depth.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Where
- Streat (BN6, BN7)
- Wider area
- West Sussex
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the quote in Streat
Jobs vary more than people expect. The main factors:
- Which sealant suits the joint
- The old material and how stubborn it is
- The number of rooms or windows
- The size of the job
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and give you a clear price before work begins.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- The rough size of the job
- Whether it’s a home or a business
- How we’d reach the joints
- The address or postcode of the job
To get a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We will give you a clear price before any work starts.
Streat: your questions answered
Can you help a landlord with a rental near Plumpton station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Is Streat within the area you cover?
Yes, Streat is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
How do I get a quote for external mastic in Streat?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and we’ll quote it together.
What information do you need?
Tell us what needs doing and where, with pictures by email if possible. If we need more, we’ll ask.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Are you fully insured?
Yes. We’re fully insured, and we have been doing sealant work for more than 20 years.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
In hotels, rooms out of use cost money, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.
Signs you need external mastic in Streat
Weeds, moss and debris in a joint are a sign the sealant has gone. Roots and dirt hold water against the wall and speed up the damage.
The most common problems we see are:
- Leaking joints around cladding and façade panels
- Weathered mastic that no longer stretches
- Sealant pulling away from one side of the joint
- Joints with sealant missing in places
Managing a site like Plumpton Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Comparing quotes
- Whether you can choose the colour
- What product goes in the joint
- Is VAT in the price?
- What happens if they find a problem under the old sealant
Places near Streat
What else we do in Streat
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes anything from a few hours to several days, depending on the building, and the area is left clean. For a village or hamlet like Streat, the journey is planned in advance: 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.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires 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 about any water getting in
- Keep pets and children clear of the area while we work
- Mention if the joints have been sealed before
Get a quote
We quote each job on its own, so the first step is telling us about yours. Just call 0345 464 0079 or drop us an email with the details and send pictures if you have them.
Read more
What external mastic looks like in Streat
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 Plumpton station? Then split movement joints are easy to miss on a rental until damp shows inside. Homes close to Streat Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Streat is about 3 miles south-east of Burgess Hill, in West Sussex. Homes, rented property, offices and hotels in Streat is covered for external mastic. The work is guaranteed for a year. 371 places in West Sussex are on our list, from the larger towns to small villages. Brighton is on our list too, around 6 miles away.
Jobs for external mastic in BN6 and BN7 works the same way as everywhere else we cover. Other places close to Streat include Plumpton (1 mile south-east), Plumpton Green (1 mile north-east), East Chiltington (1 mile east), Ditchling Common (2 miles north) and Chiltington (2 miles east). We also work in nearby towns such as Crawley (14 miles north), Horsham (15 miles north-west), Worthing (15 miles south-west), Haywards Heath (6 miles north), Burgess Hill (3 miles north-west) and East Grinstead (15 miles north).
Local landmarks in Streat
The closest station to Streat is Plumpton station, about 1.1 miles north-east. Other landmarks nearby include Ditchling Museum of Art + Craft (1.6 miles west) and Lewes Victoria Hospital (4.5 miles south-east). The countryside around Streat includes Ditchling Beacon and Bedelands Farm Nature Reserve.
How the job changes by surface
Copings and trims
Coping joints that leak let water straight down into the wall. Resealing them is a small job that protects a lot.
Cladding and façade panels
Cladding and façade panels are usually separated by sealed joints. We reseal them with a sealant suited to the panel material.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Have failed joints looked at early
- Ask before painting over external sealant
- Keep soil, plants and ivy away from the joints
- Look over the joints every year, ideally after winter
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.