Reading · England
External Mastic in Chazey Heath
Professional external mastic in and around Chazey Heath, with every bit of old sealant taken out first and a one-year guarantee.
- Plants rooting in failed movement joints
- Leaking joints around cladding and façade panels
- Sealant that has lost its bond to the brick or render
About our external mastic in Chazey Heath
On houses, flats and commercial buildings across Chazey Heath, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean, sound faces and a controlled depth. If you have brick movement joints where the sealant has split and movement joints filled with mortar instead of sealant, we can put it right, on brickwork movement joints, concrete & block and render & cladding joints alike.
Around Chazey Heath, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.
All our work comes with a one-year guarantee, wherever you are in Reading.
- Where
- Chazey Heath (RG4)
- Wider area
- Reading
- Cover
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the quote in Chazey Heath
The price is agreed before any work begins. It’s based on:
- When we can work, for business premises
- How easy the joints are to reach
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What we need to know
Before you ask for a quote, have a think about:
- How many joints, rooms or windows are involved
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
- Any access issues, like height or stairs
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved and send you a clear quote.
Leave it or put it right?
Resealing a run of joints in one go is normally better than patching one at a time. Joints of the same age tend to fail together and it means sorting access once. Older cottages and farmhouses around Chazey Heath 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: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.
What you get with us
- Sanitary silicone with an anti-fungal additive in wet areas
- You choose the colour before work begins
- Quality sealants from Arbo and Everbuild
- Rated 4.9 stars on Google
Take a look at our cost guide or our reviews.
Surface by surface
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. We reseal their joints with backing rod and a flexible product.
Copings and trims
Coping and trim joints face rain and sun head on. We reseal them with an exterior sealant suited to the material.
When to call us in Chazey Heath
Some movement joints have been pointed up with mortar, often by someone who didn’t know what it was for. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Signs it’s time to call us include:
- Old sealant gone brittle and cracked
- Brick movement joints where the sealant has split
- Panel joints letting water in
- Weeds or debris growing in open joints
Homes close to Church of St John the Baptist include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Before you book anyone
- When the joint can take water or movement
- Is the old sealant removed completely?
- Whether the sealant suits the joint
- Whether you can choose the colour
Aftercare tips
How long the joints last depends on use and care. We suggest:
- Do not let climbing plants root in the sealant
- Keep water from gutters off the wall
- Look over the joints every year, ideally after winter
- Ask before painting over external sealant
Follow the cure time we give you before the joint is knocked or disturbed. Most exterior sealants skin fast but take longer to cure right through.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Should I try it myself first?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Outside joints around Chazey Heath
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Mapledurham House (about 1.6 miles west) are a reminder that the area around Chazey Heath has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Schools such as Kidmore End 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. For landlords with property near Tilehurst station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Chazey Heath is about 2 miles north-west of Caversham, in Reading. Across the RG4 area, we can carry out external mastic at your property. Our Reading coverage runs to 34 places, and Chazey Heath is one of them.
Work in RG4 works the same way as everywhere else we cover. That includes homes and businesses on Rokeby Drive and Chazey Close. If you are just outside Chazey Heath, we cover Trench Green (1 mile west), Mapledurham (2 miles west), Purley on Thames (2 miles south-west), Norcot (3 miles south-west) and Tilehurst (3 miles south-west). We also work in nearby towns such as West Reading (3 miles south), Shinfield (6 miles south), Arborfield Garrison (9 miles south-east), Horncastle (3 miles south), Whitley Wood (6 miles south) and Fords Farm (4 miles south).
Near you in Chazey Heath
Locally, jobs take us to homes and businesses close to Highdown School and Sixth Form Centre, The Pack Saddle pub and The Warwick School and the streets around them. For rail, the closest station is Tilehurst station, roughly 1.9 miles south-west of the centre. Other landmarks nearby include Battle Hospital (2.4 miles south) and Royal Berkshire Regiment Museum (2.4 miles south). Open spaces near Chazey Heath include Fobney Island Wetland Reserve and Sonning Hill.
Chazey Heath: your questions answered
I let a flat near Tilehurst station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
Can you do external mastic in Chazey Heath?
Yes, Chazey Heath is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear price.
Where do you work from?
We work from Crawley. We cover Chazey Heath and the rest of Reading, along with the rest of our area.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
What’s an expansion joint in brickwork?
Most straight vertical gaps in brickwork are movement joints. It gives the wall room to move, and it should be sealed with a flexible sealant.
Can you match the colour of my brickwork?
The sealant colour is picked to suit the wall, so the joint sits quietly in the wall. Exterior sealants come in a good range of colours.
Is the work guaranteed?
Yes. Each job is guaranteed for twelve months, wherever you are.
Can you do several jobs on one visit?
Yes. Just list everything you need.
Nearby places to Chazey Heath
What else we do in Chazey Heath
How the visit works
At the end, we look at the finished work together and explain the cure time. The visit itself usually takes a few hours to a few days, depending on the length of joint and the access, depending on the amount of work. In a small place like Chazey Heath, access is usually 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.
- The joint faces are cleaned and primed where the sealant needs it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- Tell us about any water getting in
- Mention if the joints have been sealed before
- Keep children and pets away from the work area
How to get a quote
We quote each job on its own, so the first step is telling us about yours. Just call 0345 464 0079 or drop us an email with the details, and photos are welcome.