West Berkshire · England
External Mastic in West Ilsley
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in West Ilsley. Fully insured, ARBOMaster approved and guaranteed for a year.
- Sealant pulling away from one side of the joint
- Rain getting behind render or cladding at a joint
- Weathered mastic that no longer stretches
Looking after it afterwards
Aftercare is simple:
- Keep high-pressure jets off the joints
- Check the sealant is paintable before painting near it
- Clear growth from the base of walls and joints
- Show decorators and builders where the movement joints are
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They must stay as flexible joints, never rendered or pointed over.
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 it’s worth resealing at the first signs.
External mastic for homes and businesses in West Ilsley
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, leaving it bonded to two faces so it can move with the wall. We work on joints between brick and frames, brickwork movement joints and copings & trims, and the jobs we see most are joints with sealant missing in places and weeds or debris growing in open joints.
Older homes in small places like West Ilsley may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Big or small, you get the same one-year guarantee in West Ilsley and across West Berkshire.
- Where
- West Ilsley (RG20)
- Region
- West Berkshire
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What we’re called out for in West Ilsley
A lot of failed joints come down to preparation: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
The most common problems we see are:
- Old sealant gone brittle and cracked
- Failed sealant between panels on a façade
- Sealant pulling away from one side of the joint
- Gaps where render, brick and frames meet
If you live in an older home near Church of All Saints, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Before you book anyone
- Who turns up on the day
- How the joint is cleaned and prepared
- What happens if they find a problem under the old sealant
- Whether VAT is included
Landlords, agents and businesses in West Ilsley
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we are fully insured.
When it is not the sealant
Sealant isn’t the answer to every problem, and we’ll tell you before we start. It will not solve:
- Structural movement, which needs a surveyor or engineer
- Loose or hollow render, which needs re-rendering
- Rising or penetrating damp from elsewhere in the wall
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before you book.
Where we work in West Ilsley
- Copings & trims
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
- Façade panels
- Joints between brick and frames
Places near West Ilsley
What else we do in West Ilsley
Leave it or put it right?
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The wall then cracks somewhere else. A flexible sealant over backing rod is what the joint needs. Where a wall is exposed, as many are in small places like West Ilsley, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why us?
- We agree the colour with you first
- We never seal over old sealant
- Anti-fungal sanitary silicone in wet areas
- Every job guaranteed for a year
See our cost guide or our reviews.
West Ilsley questions
Will you come out to West Ilsley?
Yes. West Ilsley is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
What guarantee comes with external mastic in West Ilsley?
All our work, in West Ilsley and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
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.
Is it OK to seal over old sealant?
No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can you match the colour of my brickwork?
We aim for a joint that suits the wall rather than one that jumps out. Colour is agreed with you before we begin, matched as closely as the range allows.
Do I need to be at home?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
West Ilsley buildings and the weather
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.
In and around West Ilsley, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
West Ilsley is about 6 miles south-west of Didcot, in West Berkshire. Wherever you are in the RG20 postcode area, we cover external mastic for homes and businesses. Across West Berkshire, we cover 155 places, West Ilsley among them. You can also see our page for Oxford, about 15 miles away.
Postcode districts we cover here for external mastic: RG20. If you need external mastic at a property on Bury Lane and Churchway or anywhere close by, our applicators can take on the job. We also cover the places around West Ilsley: Catmore (2 miles south-west), Stanmore (2 miles south), Farnborough (3 miles west), Brightwalton (4 miles south-west) and Brightwalton Green (4 miles south-west). Further out, we also cover Newbury (10 miles south), Thatcham (10 miles south), Burghfield Common (15 miles south-east), Speenhamland (9 miles south), Hungerford (12 miles south-west) and Calcot (13 miles south-east).
What’s near West Ilsley
Typical jobs here are in homes near The Harrow pub and the streets around them. Other landmarks nearby include Atlas Computer Laboratory (2.4 miles north). The countryside around West Ilsley includes Mowbray Fields and Churn Hill.
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
What happens on the day
When we arrive, we start by going over the job with you. Surfaces next to the work are protected before we start. Most jobs take a few hours to a few days, depending on the length of joint and the access. Somewhere as small as West Ilsley, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- 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.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Let us know if you’ve seen damp or leaks
- Keep pets and children clear of the area while we work
Getting a quote
Need a quote? Please call 0345 464 0079 or email us with a few details. You will know what we plan to do, and what it will cost, before any work begins.