Surrey · England
External Mastic in Brewer Street
Sealing brickwork movement joints, render, cladding and façade joints in Brewer Street, with a one-year guarantee on every job. Call for a quick quote.
- Rain getting behind render or cladding at a joint
- Old sealant gone brittle and cracked
- Gaps where render, brick and frames meet
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Keep movement joints as flexible joints, not mortar
- Walk round the building once a year and look at the joints
- Clear growth from the base of walls and joints
- Leave the joints unpainted unless we’ve said otherwise
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established.
External mastic in Brewer Street
External mastic is a job where short cuts show quickly. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We take the old material out and do it properly. We work on concrete & block, copings & trims and joints between brick and frames, and people most often call us about joints with sealant missing in places and cracked joints where brick meets render or frames.
Around Brewer Street, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Brewer Street (RH1)
- Region
- Surrey
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY versus a professional finish
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
What we cannot put right
To be straight with you, some problems need a different trade:
- Cracks in the bricks or render themselves, away from the joints
- Adding movement joints to masonry that has none
- Subsidence or other structural problems
If you are not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer.
Surfaces we seal
- Brickwork movement joints
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
- Copings & trims
- Façade panels
Nearby places to Brewer Street
Other services in Brewer Street
How we quote for external mastic
Your quote is based on your job. We look at:
- Any mould that needs treating
- The type of sealant required
- When we can work, for business premises
- How easy the joints are to reach
The cost reflects the work involved, not guesswork. That is why we ask about the job first and give you a clear quote before any work starts.
What we need to know
Photos help, but a description is a good start. Try to tell us:
- The problem you’ve noticed
- Any previous sealing or DIY work
- The type of property
- Where the job is, and your postcode
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Outside joints around Brewer Street
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For site and facilities teams at buildings such as Bletchingley Village Primary School, larger buildings have long runs of movement joint that eventually need resealing. In the older streets around Church of St Mary the Virgin, the joints between older walls, newer extensions and the roofline need a sealant that can move. Rented homes near Merstham station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Brewer Street is about 2 miles south of Caterham, in Surrey. Brewer Street gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. 395 places in Surrey are on our list, from the larger towns to small villages. There’s also a page for Crawley, about 11 miles away.
Our applicators cover all of RH1 for external mastic and the streets around it. Local streets include Whitehill Lane and Brewer Street, all of which we cover. Nearby, we also carry out external mastic in Nutfield (1 mile south-west), Chaldon (2 miles north), South Merstham (2 miles west), Merstham (2 miles north-west) and South Nutfield (2 miles south-west). We also work in nearby towns such as Epsom (9 miles north-west), Horley (6 miles south-west), Redhill (3 miles west), Ewell (10 miles north-west), Reigate (4 miles west) and Dorking (10 miles west).
What’s near Brewer Street
Locally, jobs take us to homes and businesses close to Merstham Park School, Oakhyrst Grange School and The Prince Albert Public House and the streets around them. Brewer Street’s nearest station is Merstham station, roughly 2.2 miles west. Other landmarks nearby include East Surrey Museum (2.2 miles north-east) and The Belfry (3.1 miles west). The countryside around Brewer Street includes Mercers Lake and Bay Pond.
Landlords, agents and businesses in Brewer Street
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Housing providers, facilities teams and property managers book us too in Brewer Street and across Surrey. We can quote a run of properties together.
Different surfaces, different methods
Joints between dissimilar materials
Wherever two materials meet, they move differently. A flexible sealant bridges the two so the movement is taken up.
Concrete and blockwork
The face of concrete or block is often dusty, so preparation is key. A primer goes on where the product requires one before sealing.
Questions from Brewer Street
Do you work for landlords with property near Merstham station?
Yes, we work for letting agents and landlords. You can call 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before work begins.
Will you come out to Brewer Street?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Why is there a gap in my brick wall?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It should be filled with flexible sealant, never mortar.
How do you reach high-level joints?
That depends on the building and the joints. We work on joints that can be reached safely. Give us some details and we’ll confirm the access.
How long does the job take?
It depends on the size of the job, but most jobs take a few hours for a handful of joints, longer for a whole elevation. We’ll give you a better idea when we quote.
Where do you work from?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
How do I get a quote for external mastic in Brewer Street?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or drop us an email and tell us what needs doing and where.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
What we do, step by step
There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the job takes a few hours to a few days, depending on the length of joint and the access for a typical job. For a village or hamlet like Brewer Street, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by walking round the building and agreeing the joints and the access.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Let us know about earlier repairs to the joints
- Plan for the work area to be out of bounds to pets and children
- Mention any leaks or damp you’ve noticed
Getting a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To arrange one, phone 0345 464 0079 or email us.