Prolam Pergolas by Prolam

Prolam Pergolas

Prolam

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Description

Prolam Pergolas are pergola structures built from Prolam PL8 or PL12 glulam beams and CodeMark certified H5 glulam posts. Prolam publishes span tables allowing beam, rafter and post sizes to be determined without Specific Engineering Design for structures within the tables' scope.

Key Features

PL8 and PL12 structural grade glulam beams and rafters
CodeMark certified H5 glulam posts, no post brackets required
H3.2 and H5 treatments for exterior use
Published span tables for beam, rafter and post sizing
Published rafter to beam fixing options
Range of sizes and lengths
Visual grades and finishes available
FSC certified timber options available under FSC-C181652
Design support available from in-house structural engineers
Manufactured in New Zealand

Scope of Use

Freestanding and attached pergolas for residential and light commercial exterior applications.
Sizing within the scope of the Prolam pergola span tables, which cover defined pergola dimensions, rafter spacings and loadings. H3.2 treatment for exterior above-ground members, H5 for in-ground posts.
Suitable for exterior exposure including coastal environments.
Wind zone applicability is defined in the span tables.

Limitations on Use

The Prolam pergola span tables apply only within their stated scope of pergola dimensions, rafter spacing and loading. Structures outside that scope, including those in extra high or specific engineering design wind zones, or those supporting roofing, shading or infill imposing additional load, require Specific Engineering Design.

All timber must be protected from the elements until sealed and sealed with a quality paint or stain system within 14 days of delivery, with all cuts, holes and rebates resealed.

Fixings must be selected for the corrosion environment in accordance with NZS 3604 Section 4.

No drilling or notching of members unless specifically detailed by an engineer.

Statement of Building Code Compliance

Prolam structural laminated timber, installed in accordance with Prolam installation requirements, will meet or contribute to meeting the following provisions of the NZ Building Code.

B1 Structure: 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). AS/NZS 1170:2002 for engineering span tables. Manufactured to AS/NZS 1328.1:1998 and AS 5068.
B2 Durability: meets the requirements of B2.3.1 (a), B2.3.2. All timber is treated in accordance with NZS 3640.
C Protection from Fire: meets the requirements of C6.3, C6.4. APA Evaluation of Char Rate (ASTM E119), TT-118, January 2015.
F2 Hazardous Building Materials: meets the requirements of F2.3.1. All timber is treated in accordance with NZS 3640, including the required flash-off period before dispatch. Prolam treats its own timber and is third party audited for compliance with the New Zealand treatment standard. Safety Data Sheets for treatment chemicals are available on request.

Prolam H5 Posts used in pergola applications hold CodeMark certification.

In-Service History

Prolam has been supporting architects and construction professionals for 20 years to design and build with strength, confidence and ease with premium engineered timber solutions.

Other Performance Attributes

Dimensional stability with minimal twisting or warping in exposed exterior conditions. H3.2 treated members are machined after treatment, removing green surface colouring and producing a light brown finish suitable for staining or painting.
Timber sourced from renewable and sustainably managed New Zealand plantations.