West Berkshire · England
Wash Common External Mastic
External mastic in Wash Common from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Movement joints with cracked, split or missing sealant
- Leaking joints around cladding and façade panels
- Old sealant gone brittle and cracked
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Act on the first splits you see
- Make sure movement joints are not pointed over
- Ask before painting over external sealant
- Avoid pressure-washing directly into sealant joints
Don’t let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established so early resealing is worth it.
External mastic for homes and businesses in Wash Common
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We strip the joint back and start again. We work on brickwork movement joints, concrete & block and render & cladding joints, and common reasons people get in touch are damp patches traced to an open external joint and sealant that has lost its bond to the brick or render.
Outbuildings, garages and conservatories around homes in places like Wash Common add more joints to look after. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
All our work comes with our 12-month guarantee.
- Place
- Wash Common (RG14, RG20)
- Region
- West Berkshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
What affects the quote in Wash Common
There’s no set price list. What we look at:
- Whether old sealant or filler has to be cut out
- Mould in or behind the old joints
- Any working-time requirements on site
- The number and length of the joints
Leaving a failed joint generally makes the job bigger, not smaller, because water and mould keep working on it. If you’re unsure, ring 0345 464 0079 or email us and we will give you an honest view and a quote.
What we need to know
Before you ask for a quote, have a think about:
- Where the property is
- Whether it’s a home or a business
- Roughly how big the job is
- Any access issues, like height or stairs
We quote each job on its own. Simply phone 0345 464 0079 or send us an email and describe the job.
What sealant work cannot fix
Sealant isn’t the answer to every problem, and we’ll tell you before any work starts. Sealant won’t put right:
- Cracks in the bricks or render themselves, away from the joints
- Cutting new joints into brickwork, which is building work rather than sealant work
- Failed render or damaged cladding panels
If you’re not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
- Render & cladding joints
- Façade panels
- Copings & trims
External mastic in Wash Common: local notes
Historic houses like Benham Park (about 2.4 miles north-west) are a reminder that the area around Wash Common has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. London and the South East are among the drier parts 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 St Luke Church, the joints between older walls, newer extensions and the roofline need a sealant that can move. Managing a site like Falkland Primary School? Then its movement joints, gutters and trims need looking after like any other building’s.
Wash Common is about 2 miles south-west of Newbury, in West Berkshire. Anywhere in RG14, we can carry out external mastic at your property. Wash Common is one of 155 towns and villages in West Berkshire where we work. Reading is on our list too, about 17 miles from Wash Common.
Here we cover the RG14 and RG20 postcode area for external mastic. If you need external mastic at a property on Battle Road, Stuart Road and Warren Road or anywhere close by, we can help. Neighbouring places we cover for external mastic include Wash Water (1 mile south-west), Enborne Row (1 mile south-west), Skinners Green (1 mile north-west), Newtown Common (1 mile south-east) and Sandleford (1 mile east). Larger places within reach include Thatcham (4 miles north-east), Burghfield Common (12 miles east), Hungerford (8 miles west), Calcot (14 miles east), Lambourn (12 miles north-west) and Shaw (3 miles north-east).
What’s near Wash Common
Locally, jobs take us to homes and businesses close to Horris Hill School, Park House School and The Gun pub and the streets around them. The closest station to Wash Common is Newbury station, about 1.8 miles north-east. Well-known places in the area include British Balloon Museum & Library Ltd (2 miles north-east) and Hamstead Marshall 2 (2.7 miles north-west). For a walk, there’s Sidown Hill and Audrey's Meadow.
Work for landlords, hotels and businesses
If you manage several properties in or around Wash Common, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and photos by email help.
We also work for property managers and facilities teams. We can quote a run of properties together, and we are fully insured for the work.
Wash Common questions
Do you cover smaller places like Wash Common?
Yes, Wash Common is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you do external mastic in Wash Common?
Yes. Our work covers London and the South East, and Wash Common is part of that. Just phone 0345 464 0079 or email us with a few details of the job.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Will there be a smell?
There can be a smell while the sealant cures, but it fades. Ventilation helps.
How do you reach high-level joints?
Each building is different. Tell us the height, the number of joints and what’s below them.
I rent my home. Can I book you?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
Will you leave a mess?
Tidy work is part of the job. We protect what’s around the joints.
What colours does the sealant come in?
The sealant colour is picked to suit the wall. Exterior sealants come in a good range of colours.
The process
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from a few hours to several days, depending on the building and we leave things clean and tidy. In a smaller place like Wash Common, 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 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.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
How to prepare
- Let us know about parking restrictions
- Tell us about access, such as stairs, a lift or high-level joints
- Keep children and pets away from the work area
How to get a quote
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or send us an email.
Related advice
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Common problems we fix in Wash Common
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
Most people get in touch when they notice something like this:
- Joints where the bead has come unstuck
- Hard, crazed mastic that has stopped moving
- Cracked joints where brick meets render or frames
- Failed sealant between panels on a façade
Letting a property close to Newbury station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Comparing quotes
- The length of the guarantee
- Are they insured?
- Which sealant they’ll use, and why
- Is VAT in the price?