Surrey · England
Merle Common External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Merle Common, backed by a 12-month guarantee. Call for a quick quote.
- Weeds or debris growing in open joints
- Movement joints filled with mortar instead of sealant
- Joints with sealant missing in places
Merle Common questions
Is Merle Common within the area you cover?
Yes. Merle Common is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Merle Common in your area for external mastic?
Yes, Merle Common is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear price.
Do you work for landlords and businesses?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels in Merle Common.
Is there a guarantee?
Yes. There’s a 12-month guarantee on every job, large or small.
I’m a tenant. Can you help?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
How do you reach high-level joints?
Each building is different. Tell us the height, the number of joints and what’s below them.
Do I have to be there?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Are you fully insured?
Yes, we are fully insured for domestic and commercial work.
About our external mastic in Merle Common
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. The colour is chosen to suit the brick or render. We work on joints between brick and frames, façade panels and brickwork movement joints, and common reasons people get in touch are movement joints with cracked, split or missing sealant and old sealant gone brittle and cracked.
External sealant needs dry, clean surfaces, so work around Merle Common is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Place
- Merle Common (RH8)
- Wider area
- Surrey
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Also near Merle Common
What else we do in Merle Common
Signs you need external mastic in Merle Common
If plants are growing out of a joint, the sealant has usually failed or was never there. Dirt and roots then trap moisture in the joint and speed up the damage.
People usually contact us when they notice one of these:
- Old sealant gone brittle and cracked
- Damp patches traced to an open external joint
- Cracked joints where brick meets render or frames
- Moss and dirt in joints with no sealant left
If you let a flat or house near Hurst Green station, outside joints that have cracked can let damp into a rental, so check them between lets.
What your quote should include
- Is VAT in the price?
- Whether all the old sealant comes out first
- Who turns up on the day
- How the colour is chosen
The process
All our tools and materials come with us in the van, so you do not need to buy or prepare anything. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Merle Common, the journey is planned in advance: let us know about lanes, gates and parking. 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.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any previous sealing or DIY attempts
- Clear the area around the work
Ask for a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, phone 0345 464 0079 or send us an email.
Related advice
How we quote for external mastic
You will get a clear quote before any work starts. It takes into account:
- How much old sealant there is and how hard it is to remove
- Whether there’s mould to deal with
- Whether the work is at height
- The type of sealant required
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
What to tell us for a quote
Photos by email are helpful but not essential. Please mention:
- What the problem is, such as mould, gaps, leaks or cracking
- Any previous sealing or DIY work
- Whether it’s a home or a business
- How we’d reach the joints
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job.
Different surfaces, different methods
Render joints
Water behind render can lead to blown patches. A sound joint keeps the render dry behind and protects the render itself.
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. They’re resealed over backing rod with a low-modulus sealant coloured to suit the wall.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Keep soil, plants and ivy away from the joints
- Wash walls gently around the sealant
- Never let anyone fill a movement joint with mortar
- Point out the joints to other trades
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
Merle Common buildings and the weather
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Chartwell (about 3.3 miles north-east) nearby, there’s older building stock in the area around Merle Common as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
Historic houses such as Chartwell, about 3.3 miles north-east, show how far back building around Merle Common goes, and older homes nearby need a sealant that suits their walls. Schools such as Holland Junior School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Merle Common is about 6 miles south-east of Caterham, in Surrey. We carry out external mastic for homes and businesses in Merle Common. Across Surrey, we cover 395 places, Merle Common among them. For nearby work, see our Crawley page (12 miles or so).
We work across RH8 for external mastic. We also cover Crowhurst (1 mile south-west), Troy Town (2 miles south-east), Hurst Green (2 miles north-west), Pains-Hill (2 miles north) and Crowhurst Lane End (2 miles south-west). Further out, we also cover Epsom (14 miles north-west), Horley (8 miles west), Redhill (8 miles west), Ewell (15 miles north-west), Reigate (9 miles west) and Caterham (6 miles north-west).
Near you in Merle Common
Locally, jobs take us to homes and businesses close to Oxted School. The nearest railway station is Hurst Green station, roughly 1.4 miles north of the centre. Well-known places in the area include Tandridge Priory (2.1 miles north) and Haxted Watermill Museum (2.5 miles south). The countryside around Merle Common includes Botley Hill and Bay Pond.
Landlords, agents and businesses in Merle Common
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
DIY sealant or a professional job?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.
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.