West Berkshire · England
External Mastic in Ryeish Green
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Ryeish Green and across West Berkshire. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Hard, crazed mastic that has stopped moving
- Gaps where render, brick and frames meet
- Damp patches traced to an open external joint
External mastic in Ryeish Green, done properly
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 so the line blends in. We work on concrete & block, render & cladding joints and brickwork movement joints, and common reasons people get in touch are brick movement joints where the sealant has split and rain getting behind render or cladding at a joint.
Outside joints can only be sealed when they’re dry, so work in Ryeish Green is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Ryeish Green (RG7)
- Region
- West Berkshire
- Cover
- One year on every job
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What the job involves on each surface
Render joints
Rendered walls have joints at beads, openings and changes of material. We reseal them with a flexible exterior sealant that suits the render colour.
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. Each is resealed with a weatherproof, flexible sealant.
Also near Ryeish Green
What else we do in Ryeish Green
Your questions about external mastic in Ryeish Green
Is Ryeish Green 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.
I let a flat near Reading Green Park station. Can you help?
Yes, rental work is part of what we do. You can call 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Do the sealants smell?
There can be a smell while the sealant cures, but it fades. Ventilation helps.
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.
Why is there a gap in my brick wall?
It’s a deliberate gap that lets the wall expand and contract without cracking. It’s sealed with a flexible sealant, not mortar.
What is backing rod for?
Backing rod controls the sealant depth and keeps it off the back of the joint. That way it bonds to the two sides only and can stretch.
Can you seal over the old sealant?
No. The old sealant always comes out first.
Can you seal joints between render and window frames?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. The colour is chosen to suit.
How it works
When we arrive, we look over the joints with you first, so there are no surprises. We protect the surfaces around the joints before any work begins. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere as small as Ryeish Green, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Keep pets and children clear of the area while we work
- On commercial sites, let us know about site rules
- Clear items away from the joints we are working on
Getting a quote
Need a quote? Please phone 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
Outside joints around Ryeish Green
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Stratfield Saye House (about 4 miles south) are a reminder that the area around Ryeish Green has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
If you live in an older home near St Michael and All Angels, an extension built onto an older house moves differently, and the joint between them takes the strain.
Ryeish Green is about 3 miles south of Reading, in West Berkshire. Homes, rented property, offices and hotels in Ryeish Green is covered for external mastic, old or new, large or small. The work is guaranteed for a year. Our area takes in 155 places across West Berkshire, from the larger towns to small villages.
We work across RG7 for external mastic and the streets around it. Neighbouring places we cover for external mastic include Three Mile Cross (1 mile north-west), Shinfield (1 mile north-east), Great Lea Common (1 mile north-west), Whitley Wood (1 mile north) and Whitley (2 miles north). Further out, we also cover Thatcham (13 miles west), Burghfield Common (4 miles west), Calcot (5 miles north-west), Shaw (15 miles west), Burghfield Hill (4 miles west) and Theale (6 miles north-west).
What’s near Ryeish Green
Locally, jobs take us to homes and businesses close to Pearman's Copse, Shinfield Infant and Nursery School and Ryeish Green School, among other places. Ryeish Green’s nearest station is Reading Green Park station, about 2.4 miles north-west. Other landmarks nearby include The Oracle (3.5 miles north) and Royal Berkshire Hospital (3.3 miles north). The countryside around Ryeish Green includes Longwater and Fobney Island Wetland Reserve.
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
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.
Why it’s worth doing now in Ryeish Green
Running new sealant over the old bead rarely lasts. The new layer cannot bond properly to old, weathered material, so the old joint is cut out fully first. In a small place like Ryeish Green, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote.
What you get with us
- Rated 4.9 stars on Google
- Approved under the ARBOMaster scheme
- Anti-fungal silicone where joints get wet
- White, clear, grey or coloured to suit, where the product allows
Read our cost guide and customer reviews.
What we are called out for in Ryeish Green
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
Look out for any of the following:
- Movement joints filled with mortar instead of sealant
- Rain getting behind render or cladding at a joint
- Sealant pulling away from one side of the joint
- Hard, crazed mastic that has stopped moving
For landlords with property near Reading Green Park station, split movement joints are easy to miss on a rental until damp shows inside.
Questions to ask before you book
- Whether you can choose the colour
- What happens if the job turns out different
- Whether they’re fully insured
- Which sealant they’ll use, and why
DIY versus a professional finish
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
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.
How we quote for external mastic
Call for a quick quote. The main things that affect it are:
- The old material and how stubborn it is
- The size of the job
- Access and height
- Working hours on commercial sites
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
What we need to know
To help us quote quickly, let us know:
- The rough size of the job
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
- Photos by email, if that is easy
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved and give you a clear price.