Brick Reinforcing Coil – Stainless Steel A2
From £22.90£27.48 EX VATINC VAT
Stainless steel A2 brick reinforcing coil for bedding into mortar joints to prevent cracking in brickwork and blockwork. Suitable for corrosive environments and use with materials like Green Oak where standard galvanised coil would fail.
| Size | Price | QTY |
|---|---|---|
| 100 | £32.90£39.48 | |
| 63 | £22.90£27.48 |
Total:
£0.00
Brick reinforcement mesh in coil form is one of those products that quietly does a serious job. Laid into mortar beds as you build, this stainless steel A2 reinforcing coil distributes load across the wall, tying courses together and significantly reducing the risk of cracking over time. It’s used in standard brickwork and blockwork construction, and it’s especially important in situations where conditions are harsh.
This coil is manufactured from A2 stainless steel, which puts it in a different category to the basic galvanised versions you’ll find on general builders’ merchants’ shelves. Galvanised coil is fine in many applications, but it has limits. Where moisture ingress is likely, where the build is exposed to a corrosive atmosphere, or where the masonry itself introduces corrosive elements, galvanised steel will eventually let you down. A2 stainless won’t. It resists corrosion over the long term without the coating degrading, which matters when the product is buried inside a wall you’re not opening up again for decades.
Where Brick Reinforcing Coil Is Used
Green Oak is a classic example of why the stainless grade matters. The tannins in freshly cut oak are aggressive enough to corrode standard fixings and metalwork relatively quickly, so anything going in alongside it needs to be genuinely corrosion resistant. The same logic applies to builds near coastal areas, industrial environments, or anywhere with elevated moisture levels. If you’re building a retaining wall, garden wall, or any external structure that’s going to be regularly wetted and dried, stainless is the sensible specification.
Available in 100mm and 63mm widths to suit different wall constructions, the coil format makes it easy to cut to length on site and bed into the mortar joint without awkward handling. There’s no faff with rigid sheets, and you won’t be chasing off-cuts around the site.
Pro Tip: When laying the coil into a mortar bed, make sure the joint is full and the coil is properly embedded with at least 10mm of mortar cover on each side, a dry or thin joint leaves the coil unsupported and defeats the purpose.
Brick reinforcing coil is used in brickwork and blockwork construction wherever cracking is a concern. Typical applications include external garden walls, retaining walls, parapets, internal partition walls, and any masonry built with materials that carry inherent movement risk. It beds directly into horizontal mortar joints at regular course intervals throughout the build.
The A2 stainless grade makes this coil the appropriate choice for coastal builds, structures with persistent damp exposure, and any masonry incorporating Green Oak or other timbers with high tannin content. It is also specified in new builds and renovation projects where long-term performance without inspection access is a requirement.
Best For
- Preventing cracking in brick and blockwork
- Corrosive environments and exposed external walls
- Builds incorporating Green Oak or high-tannin timbers
- Coastal and high-moisture locations
- Retaining walls and garden walls
Available In
- 100mm width
- 63mm width
Key Properties
- A2 stainless steel construction
- Long-term corrosion resistance
- Coil format for easy on-site handling
- Beds into standard mortar joints
- No degrading protective coating to fail over time
Not suitable for: Not suitable as a structural replacement for engineered reinforcement in load-bearing applications requiring calculated rebar or mesh systems. Standard galvanised coil is adequate for most internal, dry applications where cost is the priority and corrosion risk is low.
Unroll the coil and cut to the required length using tin snips or angle grinder before laying. Bed it into the mortar course at the specified intervals during construction, typically every third to fifth course depending on the specification. Ensure full mortar coverage around the coil on both faces.
Keep the coil flat and centred in the joint. Do not allow it to bridge across a dry or thin area of mortar. On corners and intersections, overlap lengths by at least 150mm to maintain continuity through the wall. The coil is workable by hand and can be shaped around corners without tools.
- Select the correct width: 100mm for standard single-leaf or cavity walls, 63mm for narrower joints or blockwork
- Unroll the required length and cut cleanly with tin snips or an angle grinder
- Apply a full mortar bed to the course before laying the coil
- Place the coil centrally in the mortar joint, ensuring it sits flat with no bridging or lifting
- Apply the next mortar layer over the coil to achieve full encapsulation with a minimum 10mm cover each side
- At corners and junctions, overlap coil lengths by at least 150mm
- Continue building the wall and repeat at the specified course intervals
Why use A2 stainless steel instead of standard galvanised brick reinforcing coil?
Galvanised coil relies on a zinc coating for corrosion protection. In wet, coastal, or chemically aggressive environments that coating degrades over time, which can eventually lead to rust staining or structural weakening. A2 stainless steel is corrosion resistant throughout the material itself, so performance doesn't depend on a surface coating remaining intact. For anything going into a wall you're not reopening, it's the safer long-term specification.
What does Green Oak have to do with the choice of reinforcing coil?
Green Oak contains high levels of tannins and organic acids that are actively corrosive to standard metals. If you're building masonry around or adjacent to freshly cut oak, galvanised fixings and reinforcement can corrode significantly faster than they would in a neutral environment. A2 stainless is resistant to this type of corrosion, making it the appropriate grade for those builds.
At what intervals should I lay the brick reinforcing coil?
This depends on the specification for the project, but a common practice is to bed reinforcing coil every third to fifth course in standard brickwork. In walls with higher cracking risk, such as long runs without movement joints or walls built in materials with known shrinkage, more frequent placement is advisable. Always follow any relevant structural or manufacturer guidance for the specific application.
This brick reinforcing coil is produced from A2 grade stainless steel, offering reliable corrosion resistance without dependence on a surface coating. A2 stainless is part of the 300 series austenitic family, containing chromium and nickel, which gives it good general corrosion resistance suitable for most external masonry environments. Available in 100mm and 63mm widths to suit a range of wall thicknesses and joint configurations. The coil format allows flexible on-site use with straightforward cutting and placement.
| Material | A2 Stainless Steel |
|---|---|
| Available Widths | 100mm, 63mm |
| Format | Coil |
| Primary Application | Brick and blockwork mortar joint reinforcement |
| Corrosion Resistance | A2 stainless grade, suitable for corrosive environments |
| Size | 100, 63 |
|---|---|
| Box Quantity | 1 |
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