Products

Prolam Rim Board

Prolam Laminated Rim Board is manufactured to AS/NZS 1328, and are designed to comply with B1, B2, C and F2 of the NZ building code.

Prolam Rim Board is structurally laminated timber with high strength, dimensional stability, good load carrying capacity, superior fire resistance, and are manufactured from select quality timber.

All timber used for laminating is carefully selected for production and graded according to strict Prowood specifications. All timber stock is kiln dried, to 13% average moisture content, to ensure efficient bonding in the gluing operations.

The laminations are machine finger jointed if required, with glue being cured by state of the art european press systems and controlled temperature. Prolam Rim Board comes standard in a common range of sizes. Laminated to eliminate twisting.

Prolam structural laminated Rim board can be used in any form of construction where the structure relies on AS/NZS 1170: 2002 and NZ 3603 1993.

Limitations on use

Prolam structural timber products can be used in specific fire performance situations, and must be designed in conjuntion with a fire engineer.

Building Code Statement of Compliance

Prolam structural laminated timber installed in accordance with the Prolam installation requiements, will comply with the below performance clauses of the New Zealand building code.

  • Structure B1/AS1: meets the requirements of B1.3.1 B1.3.2 B1.3.3 (a, b, f, j, m, q) B1.3.4 (a, b, c, d, e); AS1170:2002 for engineering span tables, AS/NZS 1328:1998 and AS5068 for building element
  • Durability B2/AS1: meets the requirements of B2.3.1(a) B2.3.2. And can be used in service class 3 situations provided H3.2 treatment or higher is used. All timber is treated in accordance with NZS3640. Prolam treats it’s own timber, and is third party audited to ensure compliance to the New Zealand treatment standard. Correct treatments must be used in the right places.
  • Protection from Fire C: APA Evaluation of Char Rate (ASTM E119), TT- 118, January 2015; meets the requirements of C6.3 C6.4. Where members are required to have a fire resistance rating the designer can use the follow standards for FRR design: TT-118 OR: NZS 3603:1993 (section 9).
  • Hazardous Building Materials F2/AS1: meets the requirements of F2.3.1. Timber treatment suppliers meet NZS3640, which includes flash-off requirements.

NZBC Designed to Comply

B1
Structure

B2
Durability

C
Protection from Fire

F2
Hazardous Building Materials

Features & Benefits

Cost Effectiveness

High weight-to-strength ratio of Prolam allows for maximum loads over large spans with the smallest possible end sections.

Product Quality

Prolam manufactured in accordance with AS/NZS 1328 Glue Laminated Structural Timber standard.

Fire Safety

Extensive fire test data shows that Prolam beams maintain structural load support for measurable periods of time in fire situations.

Design Flexibility

Prolam can be curved to virtually any radii without loss of strength and manufactured specifically to the designer’s needs.

Renewable Resource

Made from renewable New Zealand plantation timber, Prolam uses14 times less energy to produce compared to the equivalent steel beam.

Chemical Resistance

Prolam works well in harsh environments as it does not rust and the glues used are service class 3 certified.

Why Choose Prolam

Engineered Structural Timber Solutions

Specify with certainty


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