West Berkshire · England
External Mastic in Kingsclere
Problem with your movement joints in Kingsclere? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Leaking joints around cladding and façade panels
- Sealant pulling away from one side of the joint
- Failed seals between different materials
External mastic for homes and businesses in Kingsclere
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. Typical jobs include movement joints with cracked, split or missing sealant and rigid filler in a joint that should flex, across joints between brick and frames, brickwork movement joints and façade panels.
In a smaller place like Kingsclere, some homes face open ground, and walls and rooflines facing the weather take the worst of it. That’s where gutter joints and wall joints tend to fail first.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Place
- Kingsclere (RG20)
- Wider area
- West Berkshire
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How it works
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the work takes anything from a few hours to several days, depending on the building for a typical job. In a smaller place like Kingsclere, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Mention any leaks or damp you’ve noticed
- Tell us if parking is tricky
Get a quote
For external mastic in Kingsclere, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
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Questions from Kingsclere
I let a flat near Thatcham station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear quote.
Is Kingsclere within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is there a guarantee?
Yes: twelve months. If anything is not right with the work within the year, let us know and we’ll sort it.
Will it make a mess?
Tidy work is part of the job. Nearby surfaces are protected, and the area is left clean when we finish.
When will the joints need doing again?
That varies with the weather the wall faces, how much it moves and the sealant used. Treat it as a maintenance item and look at it yearly.
Do you work for hotels and businesses?
Yes. We’ve worked for hotels, offices and other businesses.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Which products do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Leave it or put it right?
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. In an older home around Kingsclere, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why Kingsclere clients choose us
- We never seal over old sealant
- Arbo and Everbuild products
- 4.9 on Google from 180+ five-star reviews
- Sealant colour chosen to suit
See our cost guide and customer reviews.
When it isn’t the sealant
We won’t take on work that won’t last, so these are the limits:
- Cracked brickwork or render that needs a builder or plasterer
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Movement that’s more than a sealant joint can take
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Concrete & block
- Copings & trims
- Brickwork movement joints
Surface by surface
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap.
Copings and trims
Metal and stone copings both move with temperature, so the joints need a sealant that stays flexible in all weathers.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Wash walls gently around the sealant
- Point out the joints to other trades
- Fix overflowing gutters above sealed joints
- Make sure movement joints are not pointed over
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
Once a joint cannot move, the wall finds another way, generally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
Walls and rooflines in Kingsclere
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Thatcham station? Then split movement joints are easy to miss on a rental until damp shows inside. In the older streets around Church of St Mary, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Kingsclere is about 5 miles south-west of Tadley, in West Berkshire. Anywhere in RG20, our applicators can take on external mastic. Kingsclere is one of 155 places in West Berkshire where we work. Our Reading page covers work nearby, about 14 miles away.
Postcode districts we cover here for external mastic: RG20. Streets in the area include King John Road, George Street and Garden Close. Neighbouring places we cover for external mastic include Wolverton (2 miles east), Ecchinswell (2 miles west), Plastow Green (2 miles north), Fair Oak (2 miles north-east) and Headley (3 miles north). Further out, we also cover Newbury (6 miles north-west), Thatcham (5 miles north), Burghfield Common (9 miles north-east), Speenhamland (7 miles north-west), Hungerford (13 miles north-west) and Spencers Wood (13 miles east).
Local landmarks in Kingsclere
Locally, jobs take us to homes and businesses close to George And Horne Public House and the streets around them. The nearest railway station is Thatcham station, about 4.8 miles north of the centre. Other landmarks nearby include Old Chapel Textile Centre (3.7 miles north-west) and West Berkshire Community Hospital (6 miles north). The countryside around Kingsclere includes Ladle Hill.
When to call us in Kingsclere
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it cannot stretch and tears as soon as the joint widens.
Any of these means the joints need attention:
- Rigid filler in a joint that should flex
- Joints with sealant missing in places
- Moss and dirt in joints with no sealant left
- Failed seals between different materials
Schools such as Kingsclere Church of England Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Questions to ask before booking
- Whether VAT is included
- How the surfaces are prepared before sealing
- What happens if they find a problem under the old sealant
- Who turns up on the day
Can I do it myself?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
If you’re set on DIY, put the effort into 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.