Surrey · England
Lower Kingswood External Mastic
We cover Lower Kingswood for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly.
- Leaking joints around cladding and façade panels
- Sealant that has lost its bond to the brick or render
- Failed seals between different materials
How it works
On the day, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before any work begins. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere like Lower Kingswood needs a little journey planning: 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.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Let us know if you’ve seen damp or leaks
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, ring 0345 464 0079 or send us an email.
Advice
About our external mastic in Lower Kingswood
A movement joint is a deliberate break that lets a wall expand and contract. The sealant in it has to stretch and squeeze for years, and when it fails, the wall takes the strain and water finds a way in. We work on brickwork movement joints, copings & trims and render & cladding joints, and people most often call us about rain getting behind render or cladding at a joint and rigid filler in a joint that should flex.
In a village or hamlet like Lower Kingswood, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
All of our work is guaranteed for twelve months, in Lower Kingswood and everywhere else we cover.
- Place
- Lower Kingswood (KT20)
- Region
- Surrey
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Why deal with it now?
Water gets in through a failed movement joint and can run behind render or cladding. Resealing early keeps the job to the joint itself, instead of the wall and finishes around it. Older cottages and farmhouses around Lower Kingswood can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Ask us for a quote and we will explain what it covers.
Why us?
- Approved under the ARBOMaster scheme
- Anti-fungal silicone where joints get wet
- Domestic, commercial and hotel work
- 20+ years of sealant experience
Take a look at how sealant jobs are priced or customer reviews.
How to look after the new joints
Aftercare is simple:
- Point out the joints to other trades
- Never let anyone fill a movement joint with mortar
- Check the sealant is paintable before painting near it
- Fix overflowing gutters above sealed joints
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established.
When something else is needed
A few problems are outside what sealant work can do:
- Cracks in the bricks or render themselves, away from the joints
- Failed render or damaged cladding panels
- Movement that’s more than a sealant joint can take
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly before booking.
Surfaces we seal
- Joints between brick and frames
- Concrete & block
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Façade panels
Lower Kingswood questions
Will you come out to Lower Kingswood?
Yes, Lower Kingswood is covered. 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.
Do you work for landlords with property near Kingswood station?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
How do you reach high-level joints?
That depends on how high the joints are and the ground below. Ground-floor joints are simple; for higher ones, send details and we will confirm the access.
Is it OK to fill a movement joint with cement?
No, not if it’s a movement joint. Filling it with mortar defeats its purpose and can lead to cracking. A flexible sealant is the right fill.
Do you seal joints where cladding meets other materials?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. We pick a colour that works with both materials.
How much does external mastic cost in Lower Kingswood?
We don’t publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before work begins.
Can new sealant go over the old?
No, because it fails. The old sealant always comes out first.
What is a movement joint?
It’s a deliberate gap that lets the wall expand and contract without cracking. It should be filled with flexible sealant, never mortar.
Signs you need external mastic in Lower Kingswood
Buildings move more than people expect. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
Keep an eye out for any of the following:
- Joints where the bead has come unstuck
- Panel joints letting water in
- Failed seals between different materials
- Water getting into walls through failed joints
For site and facilities teams at buildings such as Kingswood Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Before you book anyone
- Who does the work, and how experienced they are
- How the joint is cleaned and prepared
- Is VAT in the price?
- Which sealant they’ll use, and why
What affects the cost of external mastic
Call for a quick quote. The main things that affect it are:
- How many rooms, windows or areas are involved
- The size of the job
- Any mould that needs treating
- Whether old sealant or filler has to be cut out
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- How we’d reach the joints
- Whether it’s a home or a business
- What the problem is, such as mould, gaps, leaks or cracking
- Where the property is
Every job is quoted individually, so start by telling us what you need. Just ring 0345 464 0079 or email us with the details and send pictures if you have them.
Other services in Lower Kingswood
Lower Kingswood buildings and the weather
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For an older house near a landmark such as Church of Jesus Christ and the Wisdom of God, the joints between older walls, newer extensions and the roofline need a sealant that can move. For landlords with property near Kingswood station, outside joints that have cracked can let damp into a rental, so check them between lets.
Lower Kingswood is about 3 miles north of Reigate, in Surrey. From the centre of Lower Kingswood to the outskirts, external mastic is available for homes and businesses alike. Our area takes in 395 places across Surrey, from the larger towns to small villages. Crawley is on our list too, around 11 miles away.
Every address in KT20 is covered for external mastic. You will find streets such as Tealby Close, Orchard Way and Brighton Road. Neighbouring places we cover for external mastic include Margery (1 mile south-east), Mogador (1 mile south-west), Kingswood (1 mile north), Walton on the Hill (1 mile west) and Tadworth (2 miles north-west). Further out, we also cover Epsom (5 miles north-west), Horley (7 miles south), Redhill (3 miles south-east), Ewell (6 miles north), Walton-on-Thames (11 miles north-west) and Caterham (5 miles east).
Landmarks near Lower Kingswood
Typical jobs here are in homes near Eyhurst Park, The Sportsman pub and St Bede's School and the streets around them. For rail, the closest station is Kingswood station, about 1.5 miles north of the centre. Nearby you’ll also find Walton on the Hill (1.6 miles north-west) and The Belfry (3 miles south-east). Green spaces nearby include Mercers Lake and Reigate Heath.
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.