J Hardie
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Blacktown Building Supplies James Hardie 305512 Scyon Linea Aluminium External Slimline Boxed Corner 3600mm
A 3600mm slimline boxed corner in aluminium for Scyon Linea cladding. It creates sharp, modern external corner details while assisting water management at façade edges. The robust section is simple to cut and fix, delivering consistent, architectural lines and reducing on‑site fabrication. Ideal for contemporary residential exteriors where precision and long‑term durability are essential.
$178.00
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Blacktown Building Supplies James Hardie 305513 Aluminium Snap On Corner 3.0m (2 PIECES PER SET)
A 3.0m two‑piece aluminium snap‑on corner that simplifies creating crisp, concealed‑fix corner details. The base section fixes first, with a snap‑on cover for a clean finish and improved weather management. Easy to cut and install, it speeds façade work and delivers consistent lines across external or internal corners. Suitable for use with compatible James Hardie cladding systems in residential projects.
$144.25
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Blacktown Building Supplies James Hardie 305514 HardiePlank 230mm Aluminium External Corner Soaker
An aluminium external corner soaker for 230mm HardiePlank weatherboards, providing robust edge protection and a tidy, consistent corner profile. Designed to manage moisture at façade corners, it reduces onsite fabrication and speeds installation. Easy to cut and fix, it delivers a clean, durable finish ideal for residential weatherboard exteriors seeking both performance and visual consistency.
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Blacktown Building Supplies James Hardie 305515 HardiePlank 300mm Aluminium External Corner Soaker
An aluminium external corner soaker for 300mm HardiePlank profiles, engineered to create clean, weather‑resistant 90° corners. It protects board ends, improves water management and offers a consistent, professional appearance. Quick to trim and install, it supports efficient cladding work and reliable long‑term performance on residential façades clad with 300mm HardiePlank boards.
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Blacktown Building Supplies James Hardie 305516 HardiePlank 230mm Aluminium Internal Corner Soaker
An aluminium internal corner soaker designed for 230mm HardiePlank weatherboards. It provides a neat internal corner junction and assists with moisture management, reducing the need for complex corner fabrication. Easy to cut and install, it ensures consistent lines and speeds installation for a professional finish on residential weatherboard façades.
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Blacktown Building Supplies James Hardie 305517 HardiePlank 300mm Aluminium Internal Corner Soaker
Internal corner soaker in aluminium for 300mm HardiePlank boards, delivering a clean, protected internal junction. It improves water handling at corners and helps achieve consistent, repeatable detailing while saving installation time. Durable and simple to fit, it supports a professional finish on weatherboard façades in renovation and new build projects.
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Blacktown Building Supplies James Hardie 305518 14mm Aluminium Internal Corner 3.0m
A 14mm x 3.0m aluminium internal corner trim for use with compatible cladding systems. It creates straight, uniform internal corners and assists moisture management at junctions. The durable aluminium profile is easy to cut and fix, enabling efficient installation and a tidy, consistent façade finish. Suitable for residential exteriors requiring reliable, low‑maintenance corner details.
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Blacktown Building Supplies James Hardie 305519 14mm Aluminium External Trim Corner 3.0m
A 14mm x 3.0m aluminium external trim corner designed to form crisp, durable 90° outside corners on compatible claddings. It protects exposed board edges and promotes consistent shadow lines for an architectural finish. Quick to cut and install, it supports efficient façade work and reliable weather performance across residential building projects.
$102.60
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Blacktown Building Supplies James Hardie 305520 Scyon Axon 9mm Aluminium Internal Corner 3.0m
A 9mm x 3.0m aluminium internal corner specifically for Scyon Axon 9mm cladding. It delivers a clean, straight internal junction, protects board edges and improves moisture control. The robust aluminium profile is easy to cut and fix, ensuring uniform lines and saving installation time. Ideal for achieving a professional Axon façade finish in new builds and renovations.
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Blacktown Building Supplies James Hardie 305524 HardiePlank Galvanised Stud Clip
A galvanised steel stud clip for HardiePlank installations, assisting secure fixing at joints and providing support where studs are not ideally positioned. Corrosion‑resistant and easy to install, it helps maintain correct board alignment and spacing for a consistent façade. An essential accessory for efficient, professional weatherboard installation on residential projects.
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Blacktown Building Supplies James Hardie 305525 PrimeLine Galvanised Universal Off Stud Joint Clip - Pack 100
A pack of 100 galvanised universal off‑stud joint clips for PrimeLine weatherboards. These clips support joints where no stud is available, ensuring correct board alignment and secure fixing. Corrosion‑resistant steel construction offers durability, while the universal design speeds installation and promotes consistent spacing. Ideal for residential façades requiring reliable, professional off‑stud joint support.
$108.00
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Blacktown Building Supplies James Hardie 305528 HardiePlank Zinclume Footmould 3.0m
A 3.0m Zincalume footmould starter trim for HardiePlank weatherboards, providing a straight, durable base line and improved moisture management at the bottom of façades. The corrosion‑resistant finish suits exposed conditions. Easy to cut and fix, it ensures consistent board alignment and a professional start to cladding runs on residential exteriors.
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Blacktown Building Supplies James Hardie 305534 Joint Sealant 300ml
A 300ml cartridge joint sealant formulated for use with James Hardie fibre cement systems. It provides flexible, paintable sealing at control joints, penetrations and trim interfaces to help manage water ingress and movement. Applied with a standard caulking gun, it tools smoothly for a neat finish. Ideal for residential façades, eaves and internal wet areas using compatible Hardie products.
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Blacktown Building Supplies James Hardie 305536 Top Coat 3kg
A 3kg top coat compound for finishing fibre cement joints over a prepared base coat. The smooth, easy‑sand formula levels recessed joints and fastener areas, producing a uniform surface ready for paint. Ideal for smaller jobs, patching and trims where a large bag is not required. Suitable for internal linings and soffits within the James Hardie jointing system.
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Blacktown Building Supplies James Hardie 305547 Scyon 3000mm Stria Vertical Flashing Stop
A 3000mm vertical flashing stop designed for Scyon Stria cladding. It provides a neat termination at vertical junctions and assists in directing water away from building fabric. The durable profile is easy to cut and install, helping achieve consistent, professional detailing across façades. Ideal for residential projects seeking reliable moisture management and clean, architectural lines with Stria boards.
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Blacktown Building Supplies James Hardie 305548 HardiePlank Smooth Pvc Joiner 230mm
A smooth‑profile 230mm PVC joiner for HardiePlank weatherboards, delivering a clean, unobtrusive joint between boards. It aligns edges, protects cut ends and speeds installation, reducing the need for complex on‑site detailing. Durable and easy to cut, it helps achieve consistent, professional results on residential façades using 230mm smooth HardiePlank boards.
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Blacktown Building Supplies James Hardie 305549 HardiePlank Smooth PVC Joiner 300mm
A smooth‑profile 300mm PVC joiner for HardiePlank weatherboards. It creates a neat, consistent junction between boards, protects cut edges and simplifies installation. Trim to length as required for a professional finish with minimal site fabrication. Ideal for residential façades using 300mm smooth HardiePlank profiles seeking clean, contemporary lines.
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Blacktown Building Supplies James Hardie 305550 HardiePlank 230mm Woodgrain PVC Joiner
A 230mm woodgrain‑profile PVC joiner for HardiePlank weatherboards, matching the timber‑look texture for a seamless joint appearance. It helps align boards, protect ends and speed installation while delivering consistent visual results. Easy to cut and fix, it’s ideal for residential weatherboard cladding with 230mm woodgrain HardiePlank boards.
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Blacktown Building Supplies James Hardie 305551 HardiePlank 300mm Woodgrain PVC Joiner
A 300mm woodgrain‑finish PVC joiner designed for HardiePlank weatherboards. It blends with the board’s timber‑look texture, providing a tidy, durable joint and protecting cut edges. The joiner trims easily and installs quickly for a professional façade finish. Suitable for residential exteriors using 300mm woodgrain HardiePlank profiles.
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Blacktown Building Supplies James Hardie 305552 6mm PVC Flashing Mould 3000mm
A 6mm x 3000mm PVC flashing mould for use with compatible James Hardie cladding and lining systems. It assists in directing water away at critical junctions, providing a clean edge detail around openings and interfaces. Lightweight, easy to cut and simple to install, it supports consistent, durable weatherproofing and a professional finish on residential projects.
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Blacktown Building Supplies James Hardie 305555 Scyon Matrix Pvc Cavity Vent Strip 18 x 3000mm
The James Hardie Scyon Matrix PVC Cavity Vent Strip 18 x 3000mm promotes continuous airflow at the base of cladding cavities, helping manage moisture and improve durability. Sized for Matrix panel systems, it provides effective vermin protection while maintaining drainage. Lightweight PVC is easy to cut and install, resistant to corrosion, and designed for long-term performance. Ideal for ventilated rainscreen facades in residential and commercial applications seeking reliable cavity ventilation.
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Blacktown Building Supplies James Hardie 305556 Exotec® Gasket Snap Strip 3620mm
Designed for the Exotec facade system, the 3620mm James Hardie Exotec Gasket Snap Strip provides a neat, gasketed seal to express joints. It helps manage water ingress while enabling crisp shadow lines and consistent joint spacing. The snap-in design speeds installation and enhances aesthetics across large-format panels. Durable formulation resists UV and weathering for long service life. Use in commercial or residential facades where clean lines and reliable joint performance are essential.
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Blacktown Building Supplies James Hardie 305557 Backing Strip 1190mm
The James Hardie 1190mm Backing Strip is a purpose-made substrate behind panel joints to support sealants and flashings in facade systems. It helps create consistent, weather-resistant joints and improves sealant performance by controlling depth and contact surfaces. Lightweight and simple to position, it enhances installation speed and quality. Ideal for James Hardie cladding systems requiring precise joint backing in both residential and commercial applications.
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Blacktown Building Supplies James Hardie 305558 Backing Strip 2390mm
The James Hardie 2390mm Backing Strip provides continuous support behind express and sealed joints in facade cladding. It helps achieve durable, weather-managed joints by assisting sealant positioning and coverage. Supplied in convenient lengths for fewer joins, it speeds installation and improves finish quality. Compatible with James Hardie panel systems across residential and commercial projects where reliable joint backing and neat detailing are required.
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Blacktown Building Supplies James Hardie 305559 Backing Strip 2990mm
The James Hardie 2990mm Backing Strip supports sealant and flashing at facade panel joints to help control moisture and achieve a uniform finish. Long lengths reduce waste and butt joins, improving efficiency on site. Engineered for compatibility with James Hardie cladding systems, it assists in delivering clean joint lines and long-term performance in residential and commercial projects where detail and weatherability matter.
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Blacktown Building Supplies James Hardie 305564 Colorbond 75 x 75mm Corner Flashing 3.0m
The James Hardie Colorbond 75 x 75 x 3000mm Corner Flashing provides a robust, prefinished solution for external corners. Made from durable Colorbond steel, it resists corrosion and delivers a clean, professional edge detail. Sized for consistent coverage and easy alignment, it enhances weatherproofing and protects vulnerable junctions. Ideal for pairing with James Hardie cladding systems where long-lasting, low-maintenance corner finishing is required.
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Blacktown Building Supplies James Hardie 305565 Facade Washer Box of 1000
James Hardie Facade Washers are designed to distribute screw loads and help protect panel surfaces during installation. Supplied as a box of 1000, they provide consistent, reliable clamping for facade systems, assisting in preventing pull-through and surface damage. Easy to use with compatible fasteners, they contribute to a neat, professional finish. Ideal for high-volume commercial or residential cladding projects requiring efficient and secure panel fixing.
$162.25
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Blacktown Building Supplies James Hardie 305568 HardieTex 7.5mm Pvc Starter Strip 3.0m
The James Hardie HardieTex 7.5mm PVC Starter Strip establishes a straight, durable base line for rendered cladding systems. At 3000mm, it provides fast, consistent setup and helps shed water at the lower edge. Tough PVC resists corrosion and is easy to cut and fix. Use with HardieTex systems to improve alignment, speed installation, and deliver a clean, professional base finish on residential and light commercial facades.
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Blacktown Building Supplies James Hardie 305570 Scyon Linea Pvc Box Corner Z Flashing 2700mm Long
The 2700mm James Hardie Scyon Linea PVC Box Corner Z Flashing creates crisp, weather-resistant external corners on Linea weatherboard facades. It streamlines installation by providing a uniform reference and effective water management at junctions. Lightweight PVC is easy to cut and handle, resists corrosion, and supports long-term performance. Ideal for achieving clean lines and consistent detailing across residential projects using Scyon Linea weatherboards.
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Blacktown Building Supplies James Hardie 305571 Scyon Linea Pvc Starter Strip 3.0m
The James Hardie Scyon Linea PVC Starter Strip sets a straight base for the first course of weatherboards, ensuring consistent alignment and drainage. At 3000mm, it reduces joins and speeds installation. Durable PVC is corrosion-resistant and simple to cut and fix. Use to achieve a neat, reliable starting point and professional finish on Scyon Linea cladding in residential applications.
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Blacktown Building Supplies James Hardie 305572 Scyon Linea 180mm 90 Deg Aluminium External Corner Soaker
The James Hardie Scyon Linea 180mm 90° Aluminium External Corner Soaker provides a robust, ready-made corner detail that protects and finishes weatherboard edges. Precision-formed aluminium delivers crisp lines and long-term corrosion resistance. It helps manage water at external corners and reduces onsite fabrication time. Ideal for consistent, durable corner detailing on residential projects using 180mm Scyon Linea weatherboards.
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Blacktown Building Supplies James Hardie 305574 Scyon Linea 150mm 90 Deg Aluminium External Corner Soaker
The James Hardie Scyon Linea 150mm 90° Aluminium External Corner Soaker creates strong, neat external corners for 150mm Linea weatherboards. Made from corrosion-resistant aluminium, it improves durability and reduces site cutting and flashing complexity. It helps shed water and protects board edges, supporting a tidy, long-lasting finish. Ideal for builders seeking consistent, professional corners on Linea weatherboard installations.
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Blacktown Building Supplies James Hardie 305613 9mm Aluminium Horizontal H Flashing 3.0m
This 3000mm 9mm Aluminium Horizontal H Flashing from James Hardie provides a clean, defined cover for horizontal panel joins. It assists with water management while delivering a crisp aesthetic across facade elements. Lightweight yet durable aluminium resists corrosion and is straightforward to install and align. Suitable for use with compatible 9mm cladding panels in residential and commercial facades requiring reliable horizontal joint flashing.
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Blacktown Building Supplies James Hardie 305614 9mm Aluminium Horizontal H Jointer 100mm 10 Pack
The James Hardie 9mm Aluminium Horizontal H Jointer, supplied as 100mm segments in a pack of 10, provides precise alignment and connection at horizontal panel joints. These compact jointers simplify detailing and help maintain consistent spacing. Made from corrosion-resistant aluminium, they support durable, long-lasting facades. Ideal for installers seeking neat, repeatable joint solutions across cladding systems using 9mm panels.
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Blacktown Building Supplies James Hardie 305630 Stria 16mm External Box Corner 3.0m
The James Hardie Stria 16mm External Box Corner at 3000mm provides a strong, uniform external corner detail for Stria cladding installations. It simplifies setup and ensures a crisp, professional appearance while helping manage water at junctions. Durable construction resists corrosion and impacts. Use it to speed installation and achieve consistent, high-quality corners on modern residential facades featuring Stria cladding profiles.
$106.30
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Blacktown Building Supplies James Hardie 305664 HardieWrap Weather Barrier 2.75m x 30m Roll
James Hardie HardieWrap Weather Barrier is a tough, breathable wall wrap designed to reduce the risk of condensation while protecting framing from wind and moisture. At 2.75m x 30m, it covers large areas quickly and suits typical wall heights with fewer seams. Tear-resistant and lightweight, it installs easily behind cladding systems. Ideal for residential and light commercial builds seeking improved envelope performance and durability.
$356.55
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Blacktown Building Supplies James Hardie 305672 Joint Sealant 600ml Sausage
James Hardie Joint Sealant in a 600ml sausage delivers a high-performance, flexible seal for facade and cladding joints. It accommodates movement, adheres strongly to common building materials, and is paintable for a seamless finish. Ideal for control joints, panel interfaces, and trim connections, it helps manage water ingress and enhances durability. Use with James Hardie systems where long-term, weather-resistant joint sealing is required.
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Blacktown Building Supplies James Hardie 305844 HardieDeck Fascia Edge Cap 3000mm Decking
The 3000mm James Hardie HardieDeck Fascia Edge Cap provides a neat finishing detail to deck edges, covering cut ends and improving water shedding. Designed to complement the HardieDeck system, it installs quickly and delivers a refined appearance. Durable construction resists corrosion and everyday wear. Use it to achieve clean, consistent edges and enhance the overall presentation and longevity of your HardieDeck installation.
$107.55
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Blacktown Building Supplies James Hardie 305846 HardieDeck Slimline Edge Cap 3000mm Decking
The James Hardie HardieDeck Slimline Edge Cap at 3000mm offers a sleek, low-profile trim for finishing deck perimeters. It provides neat coverage of board ends and assists water runoff for improved durability. Engineered for compatibility with HardieDeck components, it installs easily and delivers a modern, minimal look. Ideal where a refined, slim edge detail is preferred without compromising protection.
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Blacktown Building Supplies James Hardie 305911 HardieEdge Base Trim 3950mm
The 3950mm James Hardie HardieEdge Base Trim creates a straight, durable starting profile at slab edges for cladding systems. It helps manage drip lines and provides a clean datum for subsequent panels. Made from robust materials for long service life, it reduces onsite setup time and improves finish quality. Ideal for residential facades requiring an accurate, corrosion-resistant base trim solution.
$108.40
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Blacktown Building Supplies James Hardie 305912 HardieEdge Base Trim Jointer
The James Hardie HardieEdge Base Trim Jointer connects adjoining lengths of base trim for a continuous, aligned edge. It simplifies installation and ensures consistent appearance and performance across long runs. Designed for compatibility with HardieEdge Base Trim, it supports secure, durable connections. Ideal for residential projects where a neat, professional base line is required along slabs or plinths.
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Blacktown Building Supplies James Hardie 305913 HardieEdge Internal Corner
The James Hardie HardieEdge Internal Corner provides a preformed, durable solution for internal junctions in cladding systems. It delivers clean lines, consistent alignment, and assists with water management at changes in direction. Quick to install and compatible with HardieEdge trims, it reduces the need for complex site fabrication. Ideal for builders seeking a tidy, efficient internal corner detail on residential facades.
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Blacktown Building Supplies James Hardie 305914 HardieEdge External Corner
The James Hardie HardieEdge External Corner is a preformed trim that creates crisp, robust external corner details for cladding installations. It helps protect edges, improve weather shedding, and speed installation. Designed to integrate with HardieEdge trims and compatible claddings, it ensures a consistent, professional finish across residential facades. Use where durable, low-maintenance corner detailing is required.
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Blacktown Building Supplies James Hardie 305915 Villaboard Knife
The James Hardie Villaboard Knife is a rugged scoring tool designed to cut and snap fibre cement sheets cleanly. Its durable blade and ergonomic handle provide control and comfort for repeated scoring. Perfect for trimming Villaboard and other compatible James Hardie sheets on site, it reduces dust compared to power cutting and delivers straight, accurate edges. A reliable essential for installers seeking efficient, clean cuts.
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Blacktown Building Supplies James Hardie 305979 HardieDrive Screw 25mm Box Of 1000
James Hardie 25mm HardieDrive Screws are engineered for fastening fibre cement to framing. The sharp point and thread profile promote fast bite and strong hold, while the head design assists with a flush finish. Supplied as a box of 1000 for efficient site work, they offer reliable performance across residential cladding installs. Use where consistent, durable fixing of fibre cement sheets is required.
$132.70
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Blacktown Building Supplies James Hardie 305984 HardieDrive Square Drive Screw 41mm Box Of 1000
James Hardie 41mm HardieDrive Square Drive Screws provide secure fixing of fibre cement to framing where longer fasteners are needed. The square drive reduces cam-out, improving driving control and speed. Designed for a neat, flush finish and consistent clamp, they are supplied in a box of 1000 for productivity on site. Ideal for cladding and lining installations requiring extended penetration and dependable hold.
$188.05
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Blacktown Building Supplies James Hardie 306010 HardieDeck Double Winged Base Jointer 225mm & Screw Bag of 35
The James Hardie HardieDeck Double Winged 225mm Base Jointer connects deck base sections for uniform spacing and alignment. Supplied with screws in a bag of 35, it speeds installation and ensures consistent joints across the deck surface. The double-wing profile enhances stability and support under board edges. Use with the HardieDeck system to deliver a robust, professional deck platform ready for top strips.
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Blacktown Building Supplies James Hardie 306011 Single Wing Base Jointer 225mm With Screw HardieDeck PK of 35
This James Hardie HardieDeck Single Wing 225mm Base Jointer provides secure alignment and support between deck base sections. Supplied as a pack of 35 with screws, it streamlines assembly while maintaining consistent spacing. The single-wing design suits specific deck junctions and simplifies placement. Combine with HardieDeck components for a stable sub-assembly and clean, reliable deck finishes.
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