Surrey · England
External & façade joints in Great Burgh, Surrey
Specialist external mastic for Great Burgh: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Joints with sealant missing in places
- Rigid filler in a joint that should flex
- Damp patches traced to an open external joint
When it is not the sealant
Some problems need a builder, plumber or other trade rather than us:
- Subsidence or other structural problems
- Cracks in the bricks or render themselves, away from the joints
- Rising or penetrating damp from elsewhere in the wall
If you are not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before you book.
What we seal
- Concrete & block
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
About our external mastic in Great Burgh
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement where a rigid filler would soon crack. If you are dealing with movement joints with cracked, split or missing sealant and gaps where render, brick and frames meet, we can put it right, on façade panels, concrete & block and render & cladding joints alike.
Outbuildings, garages and conservatories around homes in places like Great Burgh add more joints to look after. Leaks generally start at a gutter end, a garage door frame or where an extension meets the house.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Great Burgh (KT18, KT17, KT20)
- Wider area
- Surrey
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
How the visit works
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take anything from a few hours to several days, depending on the building. A visit to Great Burgh is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- The old mastic and anything lodged in the joint is removed.
- 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.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- Clear items away from the joints we are working on
- Let us know about stairs, lifts or work at height
- Let us know about parking restrictions
How to get a quote
Every job is quoted individually. Simply ring 0345 464 0079 or send us an email and describe the job and send photos if you have them.
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Places near Great Burgh
Other services in Great Burgh
Outside joints around Great Burgh
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Fitznells Manor (about 3 miles north) are a reminder that the area around Great Burgh has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
In the older streets around St Mark, the joints between older walls, newer extensions and the roofline need a sealant that can move. For site and facilities teams at buildings such as Shawley Community Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Great Burgh is about 2 miles south-east of Epsom, in Surrey. If you need external mastic in Great Burgh, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We are based in Crawley and cover Surrey. Our Surrey coverage runs to 395 places, Great Burgh among them. London is on our list too, around 14 miles away.
Here we cover the KT18, KT17 and KT20 postcode area for external mastic. You will find streets such as Upland Drive, Upland Way and Downland Way. Great Burgh sits on or near the B290 and B2221. We also cover the places around Great Burgh: Tattenham Corner (1 mile west), Burgh Heath (1 mile east), Epsom Downs (1 mile north-west), Nork (1 mile north-east) and Langley Vale (1 mile west). Larger places within reach include Guildford (15 miles west), Woking (15 miles west), Horley (10 miles south), Redhill (6 miles south-east), Ewell (3 miles north) and Reigate (5 miles south).
Near you in Great Burgh
Locally, jobs take us to homes and businesses close to Merland Rise Recreational Ground, Aberdour School and The Beacon School, among other places. There’s a railway station in Great Burgh itself: Tattenham Corner station. A little further out are The Ashley Centre (2.1 miles north-west) and Cockney Museum (3.7 miles north). Not far away are Cuddington Meadows and Colley Hill.
For landlords and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Landlords and letting agents in Great Burgh can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
Common problems we fix in Great Burgh
Every building moves. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. All of that ends up in the joint sealant.
These are the problems we are asked about most:
- Rain getting behind render or cladding at a joint
- Leaking joints around cladding and façade panels
- Hard, crazed mastic that has stopped moving
- Sealant pulling away from one side of the joint
Letting a property close to Tattenham Corner station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Questions to ask before booking
- The length of the guarantee
- Whether VAT is included
- Which sealant they’ll use, and why
- Is the old sealant removed completely?
Should I try it myself first?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so just mention it when you contact us.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Great Burgh questions
Can you help a landlord with a rental near Tattenham Corner station?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear price.
Is Great Burgh in your area for external mastic?
Yes, Great Burgh is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job.
Can you seal joints between two different materials?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. We pick a colour that works with both materials.
Is there a guarantee?
Yes, for a year. If there’s a problem with our work in that time, tell us and we’ll put it right.
What’s an expansion joint in brickwork?
A vertical gap in a long brick wall is generally a movement joint. It gives the wall room to move.
Are you insured?
Yes. We are fully insured for domestic and commercial work.
Where is Mr Mastic based?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Quotes for external mastic in Great Burgh
We quote each job individually. This is what makes a difference:
- Access and height
- How much there is to do
- How many rooms, windows or areas are involved
- Which sealant suits the joint
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and agree the price before starting.
Asking for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- The type of property
- Roughly how big the job is
- How we’d reach the joints
- The problem you’ve noticed
For a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.
Why act early in Great Burgh
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost, so the damage spreads beyond the joint. In an older home around Great Burgh, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why Great Burgh customers choose us
- Anti-fungal silicone where joints get wet
- A choice of colours where the product allows
- Homes, businesses and hotels
- We are fully insured
Read our cost guide and our reviews.