I Joist
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Ark Building Supplies 300 x 45mm Engineered I-Joist – 3.6m Length
This 3.6m length 300 x 45mm engineered I-joist delivers straight, stable performance for floor and roof framing. Lightweight yet strong, it simplifies handling and speeds installation. Works with commonly available hangers and connectors for secure support. Provides uniform strength and stiffness for predictable spans. Cut and fix to specification, following engineering requirements. A reliable choice for builders seeking consistent, efficient framing components in modern construction.
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Ark Building Supplies 300 x 45mm Engineered I-Joist – 3m Length
An engineered 300 x 45mm I-joist in a 3m length for lightweight, high-performance floor and roof systems. Offers excellent straightness and dimensional stability for rapid installation and reduced squeaks. Compatible with standard joist hangers and connectors. Provides predictable strength for efficient spans while easing handling on site. Cut and fix per manufacturer and engineering guidelines. Ideal for residential and light commercial projects requiring consistent, engineered timber solutions.
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Ark Building Supplies 300 x 45mm Engineered I-Joist – 4.2m Length
A 4.2m length of 300 x 45mm engineered I-joist offering excellent straightness and stability for floor and roof systems. Engineered for consistent load performance and long-term reliability. Lightweight construction assists with fast handling and installation. Compatible with standard joist hangers and connectors. Cut and fix according to engineering and manufacturer guidelines. Ideal for residential and light commercial builds requiring predictable, efficient framing solutions.
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Ark Building Supplies 300 x 45mm Engineered I-Joist – 4.8m Length
This 4.8m length of 300 x 45mm engineered I-joist supports longer spans with superior straightness and stability. Designed for efficient floor and roof framing with predictable strength and stiffness. Lightweight for easier handling and rapid installation. Compatible with standard connectors and hangers. Follow engineering and manufacturer instructions for cutting, bearing, and fixing. A dependable, high-performance option for modern residential and light commercial construction.
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Ark Building Supplies 300 x 45mm Engineered I-Joist – 5.4m Length
A 5.4m length of 300 x 45mm engineered I-joist for long, straight spans in floor and roof applications. Provides consistent, engineered strength with excellent dimensional stability to reduce deflection and squeaks. Lightweight for efficient handling and installation. Works with commonly used joist hangers and fixings. Install per engineering and manufacturer guidance. An ideal choice for high-performance framing where reliability and productivity are key.
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Ark Building Supplies 300 x 45mm Engineered I-Joist – 6.6m Length
A 6.6m length of 300 x 45mm engineered I-joist designed for long spans in floor and roof systems. Delivers consistent strength, straightness, and stability to minimise on-site rework and improve performance. Lightweight for faster handling and installation. Compatible with standard connection hardware. Follow engineering specifications and manufacturer instructions for cutting and fixing. A reliable choice for efficient, high-performance framing in modern construction.
$119.79
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Ark Building Supplies 300 x 45mm Engineered I-Joist – 6m Length
This 6m length of 300 x 45mm engineered I-joist offers extended spans with reliable stiffness and straightness for floors and roofs. Its lightweight, consistent design speeds installation and supports predictable performance. Compatible with standard hangers and connectors for secure fitment. Cut and fix following engineering and manufacturer recommendations. A robust, efficient framing component for residential and light commercial projects requiring modern engineered timber solutions.
$108.90
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Ark Building Supplies 300 x 45mm Engineered I-Joist – 7.2m Length
This 7.2m length of 300 x 45mm engineered I-joist provides maximum reach for long-span floor and roof framing while maintaining straightness and stability. Lightweight construction supports rapid installation and consistent performance. Works with commonly available joist hangers and fixings. Cut and install according to engineering and manufacturer guidance. An excellent, high-capacity option for builders seeking efficient, predictable results in large residential and light commercial projects.
$130.68
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Advanced Timber & Hardware 300 x 45mm I-Joist - 3.0m
An engineered 300 x 45mm I-joist in a 3m length for lightweight, high-performance floor and roof systems. Offers excellent straightness and dimensional stability for rapid installation and reduced squeaks. Compatible with standard joist hangers and connectors. Provides predictable strength for efficient spans while easing handling on site. Cut and fix per manufacturer and engineering guidelines. Ideal for residential and light commercial projects requiring consistent, engineered timber solutions.
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Advanced Timber & Hardware 300 x 45mm I-Joist - 3.6m
This 3.6m length 300 x 45mm engineered I-joist delivers straight, stable performance for floor and roof framing. Lightweight yet strong, it simplifies handling and speeds installation. Works with commonly available hangers and connectors for secure support. Provides uniform strength and stiffness for predictable spans. Cut and fix to specification, following engineering requirements. A reliable choice for builders seeking consistent, efficient framing components in modern construction.
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Advanced Timber & Hardware 300 x 45mm I-Joist - 4.2m
A 4.2m length of 300 x 45mm engineered I-joist offering excellent straightness and stability for floor and roof systems. Engineered for consistent load performance and long-term reliability. Lightweight construction assists with fast handling and installation. Compatible with standard joist hangers and connectors. Cut and fix according to engineering and manufacturer guidelines. Ideal for residential and light commercial builds requiring predictable, efficient framing solutions.
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Advanced Timber & Hardware 300 x 45mm I-Joist - 4.8m
This 4.8m length of 300 x 45mm engineered I-joist supports longer spans with superior straightness and stability. Designed for efficient floor and roof framing with predictable strength and stiffness. Lightweight for easier handling and rapid installation. Compatible with standard connectors and hangers. Follow engineering and manufacturer instructions for cutting, bearing, and fixing. A dependable, high-performance option for modern residential and light commercial construction.
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Advanced Timber & Hardware 300 x 45mm I-Joist - 5.4m
A 5.4m length of 300 x 45mm engineered I-joist for long, straight spans in floor and roof applications. Provides consistent, engineered strength with excellent dimensional stability to reduce deflection and squeaks. Lightweight for efficient handling and installation. Works with commonly used joist hangers and fixings. Install per engineering and manufacturer guidance. An ideal choice for high-performance framing where reliability and productivity are key.
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Advanced Timber & Hardware 300 x 45mm I-Joist - 6.0m
This 6m length of 300 x 45mm engineered I-joist offers extended spans with reliable stiffness and straightness for floors and roofs. Its lightweight, consistent design speeds installation and supports predictable performance. Compatible with standard hangers and connectors for secure fitment. Cut and fix following engineering and manufacturer recommendations. A robust, efficient framing component for residential and light commercial projects requiring modern engineered timber solutions.
$108.90
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Advanced Timber & Hardware 300 x 45mm I-Joist - 6.6m
A 6.6m length of 300 x 45mm engineered I-joist designed for long spans in floor and roof systems. Delivers consistent strength, straightness, and stability to minimise on-site rework and improve performance. Lightweight for faster handling and installation. Compatible with standard connection hardware. Follow engineering specifications and manufacturer instructions for cutting and fixing. A reliable choice for efficient, high-performance framing in modern construction.
$119.79
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Advanced Timber & Hardware 300 x 45mm I-Joist - 7.2m
This 7.2m length of 300 x 45mm engineered I-joist provides maximum reach for long-span floor and roof framing while maintaining straightness and stability. Lightweight construction supports rapid installation and consistent performance. Works with commonly available joist hangers and fixings. Cut and install according to engineering and manufacturer guidance. An excellent, high-capacity option for builders seeking efficient, predictable results in large residential and light commercial projects.
$130.68
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Swadlings Timber & Hardware 300 x 45mm x 3.0m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
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.
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Swadlings Timber & Hardware 300 x 45mm x 3.3m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
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.
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Swadlings Timber & Hardware 300 x 45mm x 3.6m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
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.
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Swadlings Timber & Hardware 300 x 45mm x 3.9m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
meyJOIST H2S engineered timber I-joists deliver the straightness and stiffness needed for long-span floors. This 300 x 45mm, 3.9m member is termite-protected (H2S) for internal, above-ground use and suits floors and roofs requiring dependable performance. Lightweight and stable, it installs with standard tools and widely available brackets. Expect reduced bounce, improved spans and fewer supports for faster builds. Suitable for residential and light commercial applications where consistent quality is essential.
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Swadlings Timber & Hardware 300 x 45mm x 4.2m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
Designed for performance, meyJOIST H2S I-joists bring high stiffness with low weight to site. This 300 x 45mm, 4.2m length is H2S termite-protected for internal, above-ground applications and performs in floors and roof systems. Straight and dimensionally stable, it cuts, drills and fixes easily using standard tools and hangers. Achieve long spans, reduced deflection and clean services routing. Ideal for residential and light commercial framing where predictable results and installation speed matter.
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Swadlings Timber & Hardware 300 x 45mm x 4.5m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
meyJOIST H2S engineered timber I-joists are built for straight, quiet floors and efficient roofs. This 300 x 45mm, 4.5m member provides termite protection (H2S) for internal, above-ground use and delivers excellent stiffness. Lightweight and easy to handle, it installs quickly with standard tools and common connectors. Achieve longer spans with fewer supports and lower bounce. A dependable choice for residential and light commercial projects demanding consistent quality and fast, accurate installation.
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Swadlings Timber & Hardware 300 x 45mm x 4.8m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
Engineered for longer spans, meyJOIST H2S I-joists provide high stiffness and straightness. This 300 x 45mm, 4.8m section is termite-protected (H2S) for internal, above-ground applications and suits floors and roof framing. The light, stable member is easy to cut, drill and fix with standard tools and hangers. Expect reduced deflection, fewer mid-supports and clean service penetrations. Ideal for residential and light commercial construction where speed and reliable performance are key.
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Swadlings Timber & Hardware 300 x 45mm x 5.1m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
Strong, straight and easy to handle, meyJOIST H2S I-joists improve build efficiency. This 300 x 45mm, 5.1m member is H2S termite-protected for internal, above-ground use and provides excellent stiffness for floors and roofs. Factory-straight and dimensionally stable, it installs with standard tools and commonly available hangers. Achieve longer spans, reduced deflection and cleaner services. Suitable for residential and light commercial projects where consistent quality and fast installation are essential.
$100.73
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Swadlings Timber & Hardware 300 x 45mm x 5.4m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
meyJOIST H2S engineered timber I-joists deliver the stiffness and straightness needed for superior floors. This 300 x 45mm, 5.4m length features H2S termite protection for internal, above-ground use and suits floors and roof systems. Lightweight and stable, it cuts and fixes easily with standard tools and brackets. Expect improved spans with fewer supports and reduced bounce. An excellent choice for residential and light commercial framing where predictable performance and speed matter.
$106.65
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Swadlings Timber & Hardware 300 x 45mm x 5.7m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
Built for long spans and quiet floors, meyJOIST H2S I-joists combine strength with light handling. This 300 x 45mm, 5.7m section is termite-protected (H2S) for internal, above-ground applications and delivers excellent stiffness. Straight and dimensionally stable, it installs fast using standard tools and widely available hangers. Achieve reduced deflection, fewer supports and clean service penetrations. Ideal for residential and light commercial builds where accuracy, speed and consistent quality are required.
$112.58
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Swadlings Timber & Hardware 300 x 45mm x 6.0m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
For efficient framing and long spans, choose meyJOIST H2S I-joists. This 300 x 45mm, 6.0m member is H2S termite-protected for internal, above-ground use and offers high stiffness for floors and roof framing. Lightweight and straight, it cuts and fixes with standard tools and common brackets. Expect fewer supports, reduced bounce and simple services integration. Perfect for residential and light commercial projects demanding consistent performance and rapid installation.
$118.50
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Swadlings Timber & Hardware 300 x 45mm x 6.3m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
meyJOIST H2S engineered timber I-joists provide the stiffness and straightness needed for long-span floors. This 300 x 45mm, 6.3m length features H2S termite protection for internal, above-ground applications and performs in floors and roofs. Lightweight and dimensionally stable, it installs quickly with standard tools and hangers. Achieve longer spans with fewer mid-supports and reduced deflection. Ideal for residential and light commercial construction focused on speed, accuracy and predictable results.
$124.43
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Swadlings Timber & Hardware 300 x 45mm x 6.6m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
Engineered for demanding spans, meyJOIST H2S I-joists deliver strength, straightness and ease of installation. This 300 x 45mm, 6.6m member is termite-protected (H2S) for internal, above-ground use and suits floors and roof framing. Lightweight and stable, it is simple to cut, drill and fix with standard hardware. Expect improved spans, reduced bounce and clean services routing. Ideal for residential and light commercial projects where consistent quality and build speed are key.
$130.35
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Swadlings Timber & Hardware 300 x 45mm x 6.9m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
meyJOIST H2S engineered timber I-joists support long spans with reliable stiffness. This 300 x 45mm, 6.9m section includes H2S termite protection for internal, above-ground applications and delivers excellent floor and roof performance. Straight and lightweight, it installs with standard tools and readily available hangers. Achieve reduced deflection, fewer supports and tidy service penetrations. A dependable choice for residential and light commercial framing where speed and consistent results matter.
$136.28
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Swadlings Timber & Hardware 300 x 45mm x 7.2m Engineered Timber I-Joist – H2S Treated – meyJOIST – for Long-Span Floors
Designed to span further, meyJOIST H2S I-joists combine high stiffness with light handling. This 300 x 45mm, 7.2m member is H2S termite-protected for internal, above-ground use and performs in floors and roof systems. Factory-straight and dimensionally stable, it is easy to cut, drill and fix with standard tools and common connectors. Expect fewer supports, reduced bounce and clean service integration. Ideal for residential and light commercial projects needing speed, accuracy and consistent structural performance.
$142.20
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Ark Building Supplies 300 x 63mm Engineered I‑Joist – 3.0m – Lightweight Floor/Roof Joist
This 300 x 63mm engineered I‑joist delivers excellent stiffness‑to‑weight for efficient floor and roof framing. Lightweight yet strong, it installs quickly and provides consistent straightness for quieter, flatter floors when installed correctly. Compatible with common joist hangers and suitable for service penetrations per guidelines. Ideal for residential and light commercial applications. Length: 3.0m. Use approved fasteners and bracing and follow manufacturer and AS/NZS installation requirements for safe, compliant performance.
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Ark Building Supplies 300 x 63mm Engineered I‑Joist – 3.6m – Lightweight Floor/Roof Joist
Engineered for strength with minimal weight, this 300 x 63mm I‑joist streamlines floor and roof construction. The consistent, straight profile aids fast installation and helps deliver flat, quiet floors when installed to guidelines. Compatible with joist hangers and suitable for service holes as specified. Ideal for residential and light commercial framing. Length: 3.6m. Always use approved fixings and bracing and follow manufacturer instructions and AS/NZS standards for compliant, long‑lasting results.
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Ark Building Supplies 300 x 63mm Engineered I‑Joist – 4.2m – Lightweight Floor/Roof Joist
This 300 x 63mm engineered I‑joist offers high stiffness‑to‑weight for efficient spans in floors and roofs. Its lightweight design improves handling, while engineered straightness supports speed and accuracy on site. Compatible with standard joist hangers and service penetration guidelines. Ideal for residential and light commercial floor systems. Length: 4.2m. Install with approved fasteners and bracing and comply with manufacturer instructions and AS/NZS requirements for dependable performance.
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Ark Building Supplies 300 x 63mm Engineered I‑Joist – 4.8m – Lightweight Floor/Roof Joist
Delivering reliable strength with easy handling, this 300 x 63mm engineered I‑joist is ideal for floor and roof framing. The straight, dimensionally stable profile aids flat finishes and efficient installation. Designed to suit common joist hangers and service hole practices. Suitable for residential and light commercial builds. Length: 4.8m. Use approved connectors and follow manufacturer and AS/NZS installation standards to ensure compliant, long‑term structural performance.
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Ark Building Supplies 300 x 63mm Engineered I‑Joist – 5.4m – Lightweight Floor/Roof Joist
This 300 x 63mm engineered I‑joist provides excellent stiffness‑to‑weight for longer spans in floor and roof applications. Lightweight yet strong construction supports fast installation and consistent straightness. Compatible with standard hanger systems and service penetration guidance. Ideal for residential and light commercial use. Length: 5.4m. Always use approved fasteners and bracing and install to manufacturer instructions and AS/NZS standards for safe, compliant performance over the life of the structure.
$107.19
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Ark Building Supplies 300 x 63mm Engineered I‑Joist – 6.0m – Lightweight Floor/Roof Joist
Optimised for strength and ease of handling, this 300 x 63mm engineered I‑joist suits long floor and roof spans. The straight, stable profile supports accurate, efficient installation and flat finishes. Compatible with joist hangers and service hole practices as specified. Ideal for residential and light commercial framing. Length: 6.0m. Use approved fixings and bracing and follow manufacturer guidance and AS/NZS requirements for compliant, durable performance on site.
$119.10
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Ark Building Supplies 300 x 63mm Engineered I‑Joist – 6.6m – Lightweight Floor/Roof Joist
This 300 x 63mm engineered I‑joist delivers high stiffness with low weight for efficient long spans in floors and roofs. The straight, dimensionally stable member aids quick installation and consistent results. Compatible with common hanger systems and service penetration guidelines. Suited to residential and light commercial builds. Length: 6.6m. Install with approved fasteners and bracing and comply with manufacturer instructions and AS/NZS standards for reliable structural performance.
$131.01
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Ark Building Supplies 300 x 63mm Engineered I‑Joist – 7.2m – Lightweight Floor/Roof Joist
Engineered for long spans and efficient handling, this 300 x 63mm I‑joist is ideal for floors and roofs. Lightweight construction supports faster installation while maintaining straightness and stability for flat, quiet floors when installed correctly. Compatible with standard joist hangers and service hole practices. Length: 7.2m. Use approved fixings and bracing and follow manufacturer guidance and AS/NZS requirements to ensure compliant, long‑term performance in residential and light commercial projects.
$142.92
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Advanced Timber & Hardware 300 x 63mm I-Joist - 3.0m
This 300 x 63mm engineered I‑joist delivers excellent stiffness‑to‑weight for efficient floor and roof framing. Lightweight yet strong, it installs quickly and provides consistent straightness for quieter, flatter floors when installed correctly. Compatible with common joist hangers and suitable for service penetrations per guidelines. Ideal for residential and light commercial applications. Length: 3.0m. Use approved fasteners and bracing and follow manufacturer and AS/NZS installation requirements for safe, compliant performance.
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Advanced Timber & Hardware 300 x 63mm I-Joist - 3.6m
Engineered for strength with minimal weight, this 300 x 63mm I‑joist streamlines floor and roof construction. The consistent, straight profile aids fast installation and helps deliver flat, quiet floors when installed to guidelines. Compatible with joist hangers and suitable for service holes as specified. Ideal for residential and light commercial framing. Length: 3.6m. Always use approved fixings and bracing and follow manufacturer instructions and AS/NZS standards for compliant, long‑lasting results.
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Advanced Timber & Hardware 300 x 63mm I-Joist - 4.2m
This 300 x 63mm engineered I‑joist offers high stiffness‑to‑weight for efficient spans in floors and roofs. Its lightweight design improves handling, while engineered straightness supports speed and accuracy on site. Compatible with standard joist hangers and service penetration guidelines. Ideal for residential and light commercial floor systems. Length: 4.2m. Install with approved fasteners and bracing and comply with manufacturer instructions and AS/NZS requirements for dependable performance.
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Advanced Timber & Hardware 300 x 63mm I-Joist - 4.8m
Delivering reliable strength with easy handling, this 300 x 63mm engineered I‑joist is ideal for floor and roof framing. The straight, dimensionally stable profile aids flat finishes and efficient installation. Designed to suit common joist hangers and service hole practices. Suitable for residential and light commercial builds. Length: 4.8m. Use approved connectors and follow manufacturer and AS/NZS installation standards to ensure compliant, long‑term structural performance.
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Advanced Timber & Hardware 300 x 63mm I-Joist - 5.4m
This 300 x 63mm engineered I‑joist provides excellent stiffness‑to‑weight for longer spans in floor and roof applications. Lightweight yet strong construction supports fast installation and consistent straightness. Compatible with standard hanger systems and service penetration guidance. Ideal for residential and light commercial use. Length: 5.4m. Always use approved fasteners and bracing and install to manufacturer instructions and AS/NZS standards for safe, compliant performance over the life of the structure.
$107.19
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Advanced Timber & Hardware 300 x 63mm I-Joist - 6.0m
Optimised for strength and ease of handling, this 300 x 63mm engineered I‑joist suits long floor and roof spans. The straight, stable profile supports accurate, efficient installation and flat finishes. Compatible with joist hangers and service hole practices as specified. Ideal for residential and light commercial framing. Length: 6.0m. Use approved fixings and bracing and follow manufacturer guidance and AS/NZS requirements for compliant, durable performance on site.
$119.10
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Advanced Timber & Hardware 300 x 63mm I-Joist - 6.6m
This 300 x 63mm engineered I‑joist delivers high stiffness with low weight for efficient long spans in floors and roofs. The straight, dimensionally stable member aids quick installation and consistent results. Compatible with common hanger systems and service penetration guidelines. Suited to residential and light commercial builds. Length: 6.6m. Install with approved fasteners and bracing and comply with manufacturer instructions and AS/NZS standards for reliable structural performance.
$131.01
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Advanced Timber & Hardware 300 x 63mm I-Joist - 7.2m
Engineered for long spans and efficient handling, this 300 x 63mm I‑joist is ideal for floors and roofs. Lightweight construction supports faster installation while maintaining straightness and stability for flat, quiet floors when installed correctly. Compatible with standard joist hangers and service hole practices. Length: 7.2m. Use approved fixings and bracing and follow manufacturer guidance and AS/NZS requirements to ensure compliant, long‑term performance in residential and light commercial projects.
$142.92
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Ark Building Supplies 300 x 90mm Engineered I‑Joist – 3.0m – High Capacity Floor/Roof Joist
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.
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