Get Any Material Delivered In 1, 2 or 3 Hours, You Choose

I Joist

204 products

  • 300 x 90mm Engineered I‑Joist – 3.6m – High Capacity Floor/Roof Joist

    Ark Building Supplies 300 x 90mm Engineered I‑Joist – 3.6m – High Capacity Floor/Roof Joist

    Engineered for strength and efficiency, this 300 x 90mm I‑joist delivers high capacity with low weight for floor and roof systems. The straight, stable member aids rapid installation and flat finishes. Compatible with common hanger systems and service hole guidance. Ideal for residential and light commercial framing. Length: 3.6m. Install with approved fasteners and bracing and comply with manufacturer instructions and AS/NZS standards for safe, long‑term performance.

    $97.20

  • 300 x 90mm Engineered I‑Joist – 4.2m – High Capacity Floor/Roof Joist

    Ark Building Supplies 300 x 90mm Engineered I‑Joist – 4.2m – High Capacity Floor/Roof Joist

    This 300 x 90mm engineered I‑joist provides excellent stiffness and capacity for longer spans in floors and roofs. Lightweight design reduces handling effort, while dimensional stability supports fast, accurate installation. Compatible with joist hangers and service penetration guidelines. Suitable for residential and light commercial builds. Length: 4.2m. Use approved fixings and bracing and follow manufacturer and AS/NZS requirements for dependable structural performance across the project’s life.

    $113.40

  • 300 x 90mm Engineered I‑Joist – 4.8m – High Capacity Floor/Roof Joist

    Ark Building Supplies 300 x 90mm Engineered I‑Joist – 4.8m – High Capacity Floor/Roof Joist

    Delivering strong, efficient spans, this 300 x 90mm engineered I‑joist is designed for floors and roofs where higher capacity is needed. Lightweight yet stable construction aids fast installation and consistent straightness. Compatible with standard hanger systems and service hole guidance. Ideal for residential and light commercial applications. Length: 4.8m. Install using approved connectors and bracing and follow manufacturer and AS/NZS standards for compliant, long‑lasting performance.

    $129.60

  • 300 x 90mm Engineered I‑Joist – 5.4m – High Capacity Floor/Roof Joist

    Ark Building Supplies 300 x 90mm Engineered I‑Joist – 5.4m – High Capacity Floor/Roof Joist

    This 300 x 90mm engineered I‑joist offers high capacity with excellent stiffness‑to‑weight for extended spans in floor and roof systems. Lightweight construction improves handling, while a straight, stable profile supports fast, accurate installation. Compatible with joist hangers and service penetration guidelines. Length: 5.4m. Use approved fasteners and bracing and follow manufacturer instructions and AS/NZS standards to ensure compliant, durable performance in residential and light commercial projects.

    $145.80

  • 300 x 90mm Engineered I‑Joist – 6.0m – High Capacity Floor/Roof Joist

    Ark Building Supplies 300 x 90mm Engineered I‑Joist – 6.0m – High Capacity Floor/Roof Joist

    Optimised for long spans and efficient handling, this 300 x 90mm engineered I‑joist provides high capacity for floors and roofs. The straight, dimensionally stable member supports rapid installation and flat finishes. Compatible with common hanger systems and service hole practices. Length: 6.0m. Install with approved fixings and bracing and comply with manufacturer and AS/NZS requirements for safe, long‑term structural performance in residential and light commercial builds.

    $162.00

  • 300 x 90mm Engineered I‑Joist – 6.6m – High Capacity Floor/Roof Joist

    Ark Building Supplies 300 x 90mm Engineered I‑Joist – 6.6m – High Capacity Floor/Roof Joist

    This 300 x 90mm engineered I‑joist delivers high capacity and excellent stiffness‑to‑weight for extended floor and roof spans. Lightweight construction aids easy handling, while engineered straightness supports fast, accurate installation. Compatible with joist hangers and service penetration guidelines. Length: 6.6m. Use approved connectors and bracing and follow manufacturer guidance and AS/NZS standards for compliant performance in residential and light commercial applications.

    $178.20

  • 300 x 90mm Engineered I‑Joist – 7.2m – High Capacity Floor/Roof Joist

    Ark Building Supplies 300 x 90mm Engineered I‑Joist – 7.2m – High Capacity Floor/Roof Joist

    Designed for long spans, this 300 x 90mm engineered I‑joist combines high capacity with low weight for efficient floor and roof framing. The straight, stable profile helps deliver flat, quiet floors when installed correctly and speeds installation. Compatible with standard hanger systems and service hole guidelines. Length: 7.2m. Install with approved fasteners and bracing and follow manufacturer and AS/NZS requirements for safe, durable performance in service.

    $194.40

  • 300 x 90mm I-Joist - 3.0m

    Advanced Timber & Hardware 300 x 90mm I-Joist - 3.0m

    This 300 x 90mm engineered I‑joist offers increased capacity with excellent stiffness‑to‑weight for floors and roofs. Lightweight construction improves handling and installation speed, while straightness supports flat, quiet floors when installed correctly. Compatible with standard joist hangers and service penetration guidelines. Suited to residential and light commercial applications. Length: 3.0m. Use approved fixings and bracing and follow manufacturer guidance and AS/NZS standards for compliant, durable structural performance.

    $81.00

  • 300 x 90mm I-Joist - 3.6m

    Advanced Timber & Hardware 300 x 90mm I-Joist - 3.6m

    Engineered for strength and efficiency, this 300 x 90mm I‑joist delivers high capacity with low weight for floor and roof systems. The straight, stable member aids rapid installation and flat finishes. Compatible with common hanger systems and service hole guidance. Ideal for residential and light commercial framing. Length: 3.6m. Install with approved fasteners and bracing and comply with manufacturer instructions and AS/NZS standards for safe, long‑term performance.

    $97.20

  • 300 x 90mm I-Joist - 4.2m

    Advanced Timber & Hardware 300 x 90mm I-Joist - 4.2m

    This 300 x 90mm engineered I‑joist provides excellent stiffness and capacity for longer spans in floors and roofs. Lightweight design reduces handling effort, while dimensional stability supports fast, accurate installation. Compatible with joist hangers and service penetration guidelines. Suitable for residential and light commercial builds. Length: 4.2m. Use approved fixings and bracing and follow manufacturer and AS/NZS requirements for dependable structural performance across the project’s life.

    $113.40

  • 300 x 90mm I-Joist - 4.8m

    Advanced Timber & Hardware 300 x 90mm I-Joist - 4.8m

    Delivering strong, efficient spans, this 300 x 90mm engineered I‑joist is designed for floors and roofs where higher capacity is needed. Lightweight yet stable construction aids fast installation and consistent straightness. Compatible with standard hanger systems and service hole guidance. Ideal for residential and light commercial applications. Length: 4.8m. Install using approved connectors and bracing and follow manufacturer and AS/NZS standards for compliant, long‑lasting performance.

    $129.60

  • 300 x 90mm I-Joist - 5.4m

    Advanced Timber & Hardware 300 x 90mm I-Joist - 5.4m

    This 300 x 90mm engineered I‑joist offers high capacity with excellent stiffness‑to‑weight for extended spans in floor and roof systems. Lightweight construction improves handling, while a straight, stable profile supports fast, accurate installation. Compatible with joist hangers and service penetration guidelines. Length: 5.4m. Use approved fasteners and bracing and follow manufacturer instructions and AS/NZS standards to ensure compliant, durable performance in residential and light commercial projects.

    $145.80

  • 300 x 90mm I-Joist - 6.0m

    Advanced Timber & Hardware 300 x 90mm I-Joist - 6.0m

    Optimised for long spans and efficient handling, this 300 x 90mm engineered I‑joist provides high capacity for floors and roofs. The straight, dimensionally stable member supports rapid installation and flat finishes. Compatible with common hanger systems and service hole practices. Length: 6.0m. Install with approved fixings and bracing and comply with manufacturer and AS/NZS requirements for safe, long‑term structural performance in residential and light commercial builds.

    $162.00

  • 300 x 90mm I-Joist - 6.6m

    Advanced Timber & Hardware 300 x 90mm I-Joist - 6.6m

    This 300 x 90mm engineered I‑joist delivers high capacity and excellent stiffness‑to‑weight for extended floor and roof spans. Lightweight construction aids easy handling, while engineered straightness supports fast, accurate installation. Compatible with joist hangers and service penetration guidelines. Length: 6.6m. Use approved connectors and bracing and follow manufacturer guidance and AS/NZS standards for compliant performance in residential and light commercial applications.

    $178.20

  • 300 x 90mm I-Joist - 7.2m

    Advanced Timber & Hardware 300 x 90mm I-Joist - 7.2m

    Designed for long spans, this 300 x 90mm engineered I‑joist combines high capacity with low weight for efficient floor and roof framing. The straight, stable profile helps deliver flat, quiet floors when installed correctly and speeds installation. Compatible with standard hanger systems and service hole guidelines. Length: 7.2m. Install with approved fasteners and bracing and follow manufacturer and AS/NZS requirements for safe, durable performance in service.

    $194.40

  • meyJOIST H2S 200 X 45 Engineered Timber - 3.0m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 3.0m

    The 200 x 45 mm meyJOIST H2S I‑Joist is a lightweight, straight and strong engineered timber member for floor and roof framing. H2S treatment provides termite resistance for suitable climates south of the Tropic of Capricorn. The 3.0 m length is ideal for shorter spans, trimmers and infills. Delivers consistent stiffness, reduced shrinkage and easier handling compared to solid timber. Compatible with common hangers and brackets for fast, reliable installation.

    $53.55

  • meyJOIST H2S 200 X 45 Engineered Timber - 3.3m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 3.3m

    This 200 x 45 mm meyJOIST H2S I‑Joist offers high strength‑to‑weight performance for efficient floor and roof systems. H2S treatment assists termite protection in appropriate regions. The 3.3 m length suits intermediate spans and framing layouts. Delivers straightness, dimensional stability and reduced squeaks versus conventional timber. Light to handle and quick to install with standard joist hangers and fixings. A reliable choice for consistent, code‑compliant structural framing.

    $58.91

  • meyJOIST H2S 200 X 45 Engineered Timber - 3.6m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 3.6m

    The 200 x 45 mm meyJOIST H2S engineered I‑Joist delivers straight, lightweight and stable performance for floor and roof framing. H2S treatment provides targeted termite resistance for southern regions. The 3.6 m length is a common module for efficient designs. Offers consistent stiffness and reduced shrinkage, helping to minimise deflection and noise. Compatible with standard connectors and fixings for fast, dependable installation across residential and light commercial projects.

    $64.26

  • meyJOIST H2S 200 X 45 Engineered Timber - 3.9m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 3.9m

    This 200 x 45 mm meyJOIST H2S I‑Joist combines strength and light handling for efficient structural framing. H2S treatment supports termite resistance in designated climates. The 3.9 m length helps achieve common spans while limiting waste. Delivers dimensional stability, straightness and reduced risk of squeaks compared to solid timber. Quick to fix with typical joist hardware and connectors. A dependable, high‑quality joist for floors and roofs.

    $69.62

  • meyJOIST H2S 200 X 45 Engineered Timber - 4.2m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 4.2m

    The 200 x 45 mm meyJOIST H2S I‑Joist provides a strong, lightweight solution for floor and roof systems with improved straightness and stability. H2S treatment assists termite protection south of the Tropic of Capricorn. At 4.2 m, it suits longer spans and efficient layouts. Reduces shrinkage‑related movement and noise versus traditional timber joists. Compatible with standard hangers and bracing for streamlined installation. Ideal for residential and light commercial builds.

    $74.97

  • meyJOIST H2S 200 X 45 Engineered Timber - 4.5m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 4.5m

    This 200 x 45 mm meyJOIST H2S engineered I‑Joist offers excellent strength‑to‑weight performance and consistent straightness for floors and roofs. H2S treatment provides targeted termite resistance for appropriate regions. The 4.5 m length supports longer spans and cleaner layouts. Delivers stability and reduced shrinkage compared to solid timber, helping minimise deflection and squeaks. Installs quickly with standard connectors and brackets for reliable, code‑compliant framing.

    $80.33

  • meyJOIST H2S 200 X 45 Engineered Timber - 4.8m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 4.8m

    The 200 x 45 mm meyJOIST H2S I‑Joist is designed for efficient long‑span floor and roof systems, combining light weight with high stiffness. H2S treatment assists termite resistance in southern regions. The 4.8 m length enables broader layouts with fewer joints. Offers consistent straightness and dimensional stability, reducing noise and movement. Compatible with common hangers, brackets and blocking for fast installation. A dependable engineered timber solution for modern framing.

    $85.68

  • meyJOIST H2S 200 X 45 Engineered Timber - 5.1m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 5.1m

    meyJOIST H2S engineered timber I-joists deliver high strength with low weight for faster, straighter installs. This 200 x 45mm, 5.1m member is termite-protected (H2S) for internal, above-ground use and offers excellent stiffness for floors and roof framing. Factory-straight and dimensionally stable, it cuts and fixes easily with standard tools and hangers. Achieve longer spans, reduced bounce and fewer mid-supports in residential or light commercial builds. Ideal for joist, rafter and trimmer applications where consistent performance and speed matter.

    $91.04

  • meyJOIST H2S 200 X 45 Engineered Timber - 5.4m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 5.4m

    meyJOIST H2S engineered timber I-joists combine strength and stability for efficient construction. This 200 x 45mm, 5.4m section is termite-protected (H2S) for internal, above-ground use, delivering reliable stiffness for floors and roof framing. Straight, lightweight and easy to handle, it cuts and fixes with standard carpentry tools and common brackets. Use to achieve longer spans with reduced deflection and fewer intermediate supports. Ideal for residential and light commercial projects requiring consistent performance, quick installation and clean service routing.

    $96.39

  • meyJOIST H2S 200 X 45 Engineered Timber - 5.7m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 5.7m

    Lightweight yet strong, meyJOIST H2S I-joists speed up framing and improve floor performance. This 200 x 45mm, 5.7m member is H2S termite-protected for internal, above-ground applications and offers excellent stiffness for floors and roof systems. Factory-straight and dimensionally stable, it is easy to cut, drill and fix with standard hardware. Achieve longer spans, lower bounce and fewer supports while simplifying services runs. Ideal for residential and light commercial flooring, rafters and trimmers where accuracy and efficiency are essential.

    $101.75

  • meyJOIST H2S 200 X 45 Engineered Timber - 6.0m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 6.0m

    meyJOIST H2S engineered timber I-joists provide high stiffness with low weight for rapid installation. This 200 x 45mm, 6.0m length is H2S termite-protected for internal, above-ground use and delivers consistent performance in floors and roof framing. Straight, stable and easy to handle, it cuts and fixes with standard tools and commonly available hangers. Use to achieve longer spans and reduced deflection with fewer mid-supports. Ideal for residential and light commercial joists, rafters and trimmers where reliability and speed are priorities.

    $107.10

  • meyJOIST H2S 200 X 45 Engineered Timber - 6.3m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 6.3m

    Designed for efficiency, meyJOIST H2S I-joists deliver strength, stability and straightness. This 200 x 45mm, 6.3m member is H2S termite-protected for internal, above-ground applications and offers dependable stiffness in floors and roofs. Lightweight for easy handling, it can be cut and fixed using standard carpentry tools and hardware. Achieve longer spans with fewer supports, improved serviceability and clean service penetrations. Suitable for residential and light commercial construction where fast installation and consistent performance are required.

    $112.46

  • meyJOIST H2S 200 X 45 Engineered Timber - 6.6m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 6.6m

    meyJOIST H2S engineered timber I-joists combine low weight with high stiffness for faster builds. This 200 x 45mm, 6.6m joist is H2S termite-protected for internal, above-ground use and performs reliably in floors and roof framing. Factory-straight and dimensionally stable, it cuts, drills and fixes with common tools and connectors. Use to achieve longer spans, reduced bounce and fewer mid-supports while simplifying services routing. Ideal for residential and light commercial projects requiring tight tolerances, clean lines and consistent quality.

    $117.81

  • meyJOIST H2S 200 X 45 Engineered Timber - 6.9m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 6.9m

    Fast, accurate and consistent, meyJOIST H2S I-joists are engineered for performance. This 200 x 45mm, 6.9m length features H2S termite protection for internal, above-ground applications and delivers excellent stiffness for floor and roof systems. Lightweight, straight and stable, it installs quickly using standard tools and widely available hangers. Achieve long spans with fewer supports, reduced deflection and tidy service holes. Perfect for residential and light commercial framing where build speed and predictable results matter.

    $123.17

  • meyJOIST H2S 200 X 45 Engineered Timber - 7.2m

    Blacktown Building Supplies meyJOIST H2S 200 X 45 Engineered Timber - 7.2m

    meyJOIST H2S engineered timber I-joists offer the strength-to-weight benefits builders rely on. This 200 x 45mm, 7.2m member includes H2S termite protection for internal, above-ground use and provides dependable stiffness for floors and roof framing. The straight, stable section is easy to cut and fix with standard tools and accessories. Achieve longer spans, less bounce and fewer mid-supports, simplifying layouts and services. Ideal for residential and light commercial applications demanding consistent quality and efficient installation.

    $128.52

  • meyJOIST H2S 240 X 45 Engineered Timber - 3.0m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 3.0m

    With greater depth for added stiffness, meyJOIST H2S I-joists streamline framing. This 240 x 45mm, 3.0m length is H2S termite-protected for internal, above-ground applications and delivers reliable performance in floors and roofs. Lightweight, straight and easy to handle, it cuts and fixes using standard carpentry tools and common hangers. Achieve improved spans and reduced deflection while maintaining fast installation. Ideal for residential and light commercial flooring, rafters and trimmers where accuracy and consistency are essential.

    $54.90

  • meyJOIST H2S 240 X 45 Engineered Timber - 3.3m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 3.3m

    meyJOIST H2S engineered timber I-joists provide stiffness, straightness and speed on site. This 240 x 45mm, 3.3m member is H2S termite-protected for internal, above-ground use and enhances floor and roof performance. The light, stable section is easy to cut, drill and fix with standard tools and common brackets. Achieve improved spans with reduced bounce and fewer mid-supports. Excellent for residential and light commercial projects, helping deliver clean service runs, predictable deflection and reliable results with efficient installation.

    $60.39

  • meyJOIST H2S 240 X 45 Engineered Timber - 3.6m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 3.6m

    Engineered for performance, meyJOIST H2S I-joists deliver strength with low weight. This 240 x 45mm, 3.6m joist is termite-protected (H2S) for internal, above-ground use and provides dependable stiffness for floors and roof framing. Straight and dimensionally stable, it installs quickly with standard tools and widely available hangers. Expect improved spans, reduced deflection and clean service penetrations. Ideal for residential and light commercial builds requiring consistency, speed and high-quality framing components.

    $65.88

  • meyJOIST H2S 240 X 45 Engineered Timber - 3.9m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 3.9m

    meyJOIST H2S engineered timber I-joists combine stiffness, straightness and ease of handling. This 240 x 45mm, 3.9m member features H2S termite protection for internal, above-ground applications and elevates floor and roof performance. Lightweight and stable, it cuts and fixes with standard tools and common connectors, streamlining installation. Achieve longer spans with fewer supports and reduced bounce while simplifying service runs. Suitable for residential and light commercial framing where predictable results and fast progress are essential.

    $71.37

  • meyJOIST H2S 240 X 45 Engineered Timber - 4.2m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 4.2m

    Built for efficiency, meyJOIST H2S I-joists offer high stiffness-to-weight for rapid framing. This 240 x 45mm, 4.2m length is H2S termite-protected for internal, above-ground use and delivers consistent performance in floors and roofs. Factory-straight and dimensionally stable, it is easy to cut, drill and fix with standard hardware. Achieve improved spans, reduced deflection and fewer mid-supports. Ideal for residential and light commercial projects requiring accurate, clean and dependable structural members.

    $76.86

  • meyJOIST H2S 240 X 45 Engineered Timber - 4.5m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 4.5m

    meyJOIST H2S engineered timber I-joists deliver reliable stiffness with low weight to speed installation. This 240 x 45mm, 4.5m joist is H2S termite-protected for internal, above-ground use and performs in floors and roof framing. Straight and stable, it cuts and fixes easily with standard tools and common brackets. Achieve better spans, lower bounce and fewer supports to simplify layouts and services. A proven choice for residential and light commercial builds where quality and consistency are critical.

    $82.35

  • meyJOIST H2S 240 X 45 Engineered Timber - 4.8m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 4.8m

    Engineered for straightness and stability, meyJOIST H2S I-joists help deliver flat, quiet floors. This 240 x 45mm, 4.8m section includes H2S termite protection for internal, above-ground applications and offers dependable stiffness for floors and roofs. Lightweight for easy handling, it cuts and fixes with standard tools and widely available hangers. Expect improved spans, reduced deflection and clean services integration. Ideal for residential and light commercial framing where speed and predictable performance are essential.

    $87.84

  • meyJOIST H2S 240 X 45 Engineered Timber - 5.1m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 5.1m

    meyJOIST H2S engineered timber I-joists provide high stiffness and low weight for efficient builds. This 240 x 45mm, 5.1m member is termite-protected (H2S) for internal, above-ground use and performs in floors and roof framing. Factory-straight and dimensionally stable, it installs quickly using standard tools and common connectors. Achieve longer spans, reduced bounce and fewer intermediate supports. Ideal for residential and light commercial applications where accuracy, speed and consistent quality matter.

    $93.33

  • meyJOIST H2S 240 X 45 Engineered Timber - 5.4m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 5.4m

    Delivering strength with light handling, meyJOIST H2S I-joists streamline framing. This 240 x 45mm, 5.4m length features H2S termite protection for internal, above-ground applications and provides excellent stiffness for floors and roofs. Straight and stable, it cuts, drills and fixes with standard tools and hangers. Expect improved spans, reduced deflection and cleaner service penetrations. Suited to residential and light commercial projects where consistent performance and fast installation are priorities.

    $98.82

  • meyJOIST H2S 240 X 45 Engineered Timber - 5.7m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 5.7m

    meyJOIST H2S engineered timber I-joists are designed for straight, quiet floors and efficient roofs. This 240 x 45mm, 5.7m member is H2S termite-protected for internal, above-ground use and delivers reliable stiffness. Lightweight and easy to handle, it cuts and fixes with standard tools and readily available brackets. Achieve longer spans, lower bounce and fewer supports to simplify layouts. Ideal for residential and light commercial builds where speed, accuracy and consistent results are essential.

    $104.31

  • meyJOIST H2S 240 X 45 Engineered Timber - 6.0m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 6.0m

    Strong, straight and stable, meyJOIST H2S I-joists boost build efficiency. This 240 x 45mm, 6.0m joist is H2S termite-protected for internal, above-ground applications and provides dependable stiffness for floors and roof framing. Lightweight for easy handling, it installs quickly using standard tools and hangers. Expect improved spans, reduced deflection and clean service routing. A dependable choice for residential and light commercial projects focused on quality and speed.

    $109.80

  • meyJOIST H2S 240 X 45 Engineered Timber - 6.3m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 6.3m

    meyJOIST H2S engineered timber I-joists deliver high stiffness and precision. This 240 x 45mm, 6.3m member features H2S termite protection for internal, above-ground use and enhances floor and roof performance. Straight and dimensionally stable, it is simple to cut, drill and fix with standard tools and common connectors. Achieve longer spans, lower bounce and fewer intermediate supports. Ideal for residential and light commercial framing where consistent quality and fast installation matter.

    $115.29

  • meyJOIST H2S 240 X 45 Engineered Timber - 6.6m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 6.6m

    Engineered for straightness and strength, meyJOIST H2S I-joists simplify framing. This 240 x 45mm, 6.6m section is termite-protected (H2S) for internal, above-ground use and delivers reliable stiffness in floors and roofs. Lightweight and easy to handle, it fixes with standard tools and widely available hangers. Achieve improved spans, reduced deflection and cleaner services integration. Ideal for residential and light commercial applications where accuracy, efficiency and consistent performance are required.

    $120.78

  • meyJOIST H2S 240 X 45 Engineered Timber - 6.9m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 6.9m

    meyJOIST H2S engineered timber I-joists provide dependable stiffness with easy handling. This 240 x 45mm, 6.9m member is H2S termite-protected for internal, above-ground applications and performs in floors and roof framing. Factory-straight and dimensionally stable, it is quick to cut and fix with standard tools and hardware. Achieve longer spans, reduced bounce and fewer mid-supports. Ideal for residential and light commercial projects seeking quality, speed and predictable structural performance.

    $126.27

  • meyJOIST H2S 240 X 45 Engineered Timber - 7.2m

    Blacktown Building Supplies meyJOIST H2S 240 X 45 Engineered Timber - 7.2m

    Designed for efficiency, meyJOIST H2S I-joists deliver strength, stability and straightness. This 240 x 45mm, 7.2m length includes H2S termite protection for internal, above-ground use and offers reliable stiffness for floors and roofs. Lightweight and easy to handle, it cuts and fixes with standard tools and common hangers. Achieve longer spans, less deflection and simplified services. An excellent choice for residential and light commercial framing where consistent quality and fast installation are essential.

    $131.76

  • meyJOIST H2S 300 X 45 Engineered Timber - 3.0m

    Blacktown Building Supplies meyJOIST H2S 300 X 45 Engineered Timber - 3.0m

    With increased depth for higher stiffness, meyJOIST H2S I-joists handle demanding spans. This 300 x 45mm, 3.0m member is H2S termite-protected for internal, above-ground applications and delivers excellent performance in floors and roof systems. Straight, stable and lightweight, it cuts and fixes easily using standard tools and common brackets. Achieve improved spans and reduced deflection with fewer supports. Ideal for residential and light commercial projects where strength, accuracy and installation speed are critical.

    $59.25

  • meyJOIST H2S 300 X 45 Engineered Timber - 3.3m

    Blacktown Building Supplies meyJOIST H2S 300 X 45 Engineered Timber - 3.3m

    meyJOIST H2S engineered timber I-joists deliver high stiffness and straightness for superior floor performance. This 300 x 45mm, 3.3m length is termite-protected (H2S) for internal, above-ground use and suits floors and roofs needing longer spans. Lightweight and easy to handle, it installs with standard tools and readily available hangers. Expect reduced bounce, fewer supports and clean service penetrations. A reliable choice for residential and light commercial framing where predictable performance and speed matter.

    $65.18

  • meyJOIST H2S 300 X 45 Engineered Timber - 3.6m

    Blacktown Building Supplies meyJOIST H2S 300 X 45 Engineered Timber - 3.6m

    Engineered to span further, meyJOIST H2S I-joists combine strength with light handling. This 300 x 45mm, 3.6m section is H2S termite-protected for internal, above-ground applications and provides excellent stiffness in floors and roof framing. Straight and dimensionally stable, it is quick to cut, drill and fix with standard tools and connectors. Achieve longer spans with fewer mid-supports and reduced deflection. Ideal for residential and light commercial builds demanding accuracy and efficiency.

    $71.10


You have seen 192 out of 204 products

I Joist

Login

Forgot your password?

Don't have an account yet?
Create account