GenLam H4 Laminated, Primed and MicroPro® Treated Posts

No warping, twisting or bending

LumberBank’s GenLam H4 Laminated, primed and MicroPro® treated posts are made in four convenient sizes and offer reliable uniformity and strength. Each post consists of 3 strips of laminated timber and are all pre primed, ready for painting. They are environmentally friendly, lightweight, versatile and safe and they certainly won’t be bending, warping or twisting.

GenLam H4 Laminated Posts are available in the following Sizes and Lengths

88x88mm 1.8 2.1 2.4 2.7 3.0 3.6 4.2 4.8 5.4 6.0
112x112mm - - 2.4 2.7 3.0 3.6 4.2 4.8 5.4 6.0
135x135mm - - 2.4 2.7 3.0 3.6 4.2 4.8 5.4 6.0
180 x 180mm - - 2.4 2.7 3.0 - 4.2 4.8 5.4 6.0

Produced by KLC, who have FSC , Chain of Custody Certification.

Manufacturing Certifications

Vertical Mini Fingerjoint certified to AS 5068 Service Class 3
Glue Laminated Structural Timber certified to AS/NZS 1328 GenLam H4 Laminated Posts are fingerjointed using Henkel’s Loctite Purebond®, a Structural Grade Polyurethane adhesive system.
Assure Quality Timber Treatment Programme. The posts are treated with MicroPro® H4. MicroPro® is approved APVMA, AS/NZS 1604 Series, NZS 3640 and NZ EPA.

GenLam H4 Laminated Posts are Dual coated with Premium Exterior Alkyd Primer Undercoat.

Storage and Handling

GenLam H4 Laminated Posts must be kept dry, and protected from excessive heat, direct sunlight and prolonged exposure to the elements, prior to installation.

All cuts, rebates, holes, and notches must be sealed with a protective coating to prevent swelling and shrinkage.


Apply two coats of Premium Exterior 100% house paint. Top coat colours should have a Light Reflectance Value (LRV) of 45 or higher, as dark colours can encourage resin bleed and distortion leading to cracking and paint failure.


Like all exterior timber products, we recommend that all GenLam H4 Laminated Posts should be cleaned once a year with a brush and soapy water. This will remove contaminants that will have a detrimental effect on the life of the paint system.

Health and Safety

Do not burn MicroPro® Treated Timber.
Wear a dust mask and goggles when cutting or sanding timber.

All sawdust and construction debris should be cleaned up and disposed of after construction.