Choose Allweather Wood

Building Code Compliant

From sill plate to guardrails and sign posts, to pilings for docks, shoring for forms, to pole barn stock, framing, and fire retardant treated, Allweather Wood manufactures and distributes the most trusted, code compliant, preservative treated lumber and plywood products for most building applications. We are able to serve our customers as they source lumber and plywood for Green Building and LEED® (Leadership in Energy and Environmental Design) certified projects, as well as government and municipal construction projects. Allweather Wood maintains Forest Stewardship Council® (FSC® C102121) chain-of-custody certification at our manufacturing locations. FSC certified wood products, both treated and untreated, may be eligible for LEED® points.


Preservative Treated Lumber Specification Information

Allweather Wood maintains current preservative treated lumber specification information online via Construction Market Data. LEARN MORE.


AIA Lunch &
Learn Courses

Allweather Wood offers an AIA approved course around commercial and residential applications of Fire Retardant Treated Wood (FRTW). Additionally, we offer two AIA LU/HSW credit hour courses that provide insight into specifying Redwood as a sustainable building product. All three courses are available cost-free, online.

Designing Sustainably with Redwood Timbers

Offered by, this course offers evidence that Redwood Timbers are a safe, strong, and sustainable option for exterior and interior building projects where natural wood is desired. This course provides an overview of the properties of Redwood Timbers including insulation properties, grades, dimensions, fasteners, finishing options, and strength. It concludes with numerous case studies exploring the use of Redwood Timbers for post and beam construction, decorative elements, deck posts, and outdoor living structures.

Redwood Lumber: Attributes, Applications, & Environmental Benefits

Offered by, this course provides insights into how modern Redwood forestry management practices contribute to the sustainability and responsible use of Redwood products. The course further describes the results of a life cycle assessment (LCA) comparing Redwood to recycled plastic/composite decking that support Redwood as an environmentally friendly choice for wood projects. Details are presented on how to differentiate and specify grades of Redwood; finishing options and methods are also discussed. The course concludes with examples of applications that showcase the unique beauty and attributes of Redwood.

Fire Retardant Treated Wood (FRTW) For Commercial and Residential Structures

This course by Ron Blank describes the features of fire retardant treated wood (FRTW), and the difference between fire resistance and flame spread. The course also lists the various types of FRTW and their specific applications. The course further explains what the model building codes require, and how FRTW is specified. Finally, the course describes how FRT wood is manufactured, tested, and certified.