Kent · England
Whetsted External Mastic
External mastic in Whetsted from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Old sealant gone brittle and cracked
- Brick movement joints where the sealant has split
- Leaking joints around cladding and façade panels
Questions from Whetsted
Is Whetsted in your area for external mastic?
Yes. Our work covers London and the South East, and Whetsted is part of that. You can ring 0345 464 0079 or drop us an email and tell us what needs doing.
Will you come out to Whetsted?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Will the new joint stand out?
We aim for a joint that suits the wall rather than one that jumps out. Colour is agreed with you before we begin from the range available.
Can you reach joints on upper floors?
It depends on the building. Where joints can be reached safely, we’ll do them. Give us some details and we will confirm the access.
Do you use backing rod?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. Then the sealant bonds to two faces and can move.
Is the work guaranteed?
Yes: twelve months. If anything isn’t right with the work within the year, let us know and we will sort it.
Will there be a smell?
There can be a smell while the sealant cures, which fades as it sets. Ventilation helps.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us, and we are fully insured.
External mastic for homes and businesses in Whetsted
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 joints with sealant missing in places and sealant pulling away from one side of the joint, we can put it right, on brickwork movement joints, concrete & block and render & cladding joints alike.
Somewhere as small as Whetsted, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
Every job is covered by our 12-month guarantee, wherever you are in Kent.
- Place
- Whetsted (TN12)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Also in Whetsted
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Deal with leaking gutters that soak the joints below
- Tell anyone working on the walls about the movement joints
- Clear growth from the base of walls and joints
- Have failed joints looked at early
Keep pressure washers away from the sealant. High-pressure water can lift the edges over time.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick, all bigger jobs than a reseal.
How the visit works
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The work itself takes a few hours to a few days, depending on the length of joint and the access, including the tidy-up. In a small place like Whetsted, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- Both sides are cleaned back to sound material and primed if needed.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Let us know if you’ve seen damp or leaks
- Plan for the work area to be out of bounds to pets and children
Getting a quote
For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Advice
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
For landlords and businesses
Letting agents and landlords in Whetsted can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Common problems we fix in Whetsted
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.
Signs it’s time to call us include:
- Weeds or debris growing in open joints
- Failed sealant between panels on a façade
- Rain getting behind render or cladding at a joint
- Joints pointed up with cement by mistake
Letting a property close to Paddock Wood station? Then split movement joints are easy to miss on a rental until damp shows inside.
Comparing quotes
- Whether VAT is included
- Whether the sealant suits the joint
- How long the guarantee is
- How much experience the applicator has
Why it’s worth doing now in Whetsted
Sealing over the top of old mastic does not hold for long. New sealant does not bond well to old, weathered sealant, so we always take the old sealant out. Older cottages and farmhouses around Whetsted can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why us?
- Trusted Arbo and Everbuild sealants
- Full insurance on every job
- Colour picked to suit the job
- Domestic, commercial and hotel work
Take a look at how sealant jobs are priced or what customers say.
What the job involves on each surface
Render joints
Water behind render can lead to blown patches. Resealing the joints early keeps water out.
Copings and trims
Coping joints that leak let water straight down into the wall. Resealing them is a small job that protects a lot.
Outside joints around Whetsted
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.
Homes close to Five Oak Green Church include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep. Schools such as Paddock Wood Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Whetsted is about 4 miles east of Tonbridge, in Kent. We carry out external mastic for homes and businesses in Whetsted, as part of our work across Kent. Our Kent coverage runs to 922 places, Whetsted among them. Our Crawley page covers work nearby.
All of TN12 is covered for external mastic. Neighbouring places we cover for external mastic include Five Oak Green (1 mile south-west), Paddock Wood (1 mile south-east), Colt's Hill (1 mile south-west), Capel (2 miles south-west) and Crockhurst Street (2 miles west). Further out, we also cover Maidstone (8 miles north-east), Sevenoaks (10 miles north-west), Royal Tunbridge Wells (6 miles south-west), Tonbridge (4 miles west), Kings Hill (6 miles north) and Foley Park (9 miles north-east).
Around Whetsted
Locally, jobs take us to homes and businesses close to The Kings Head pub, Mascalls School and Foal Hurst Wood. For rail, the closest station is Paddock Wood station, about 0.9 miles south-east of the centre. Well-known places in the area include Tonbridge Castle (4.4 miles west) and Tunbridge Wells Hospital (4.1 miles south-west). Open spaces near Whetsted include Tudeley Woods RSPB reserve.