Glulam Posts & Beams

Glulam Posts & Beams from Northern Crossarm is the rich, prefinished lumber product you’ve been waiting for.

Call 715-723-4100

The Nation’s #1 Brown Treated Wood Supplier

Glulam Posts & Beams

Featuring a rich brown finish, Northern Crossarm’s Brown Post & Beams are the ideal heavy-duty addition for convenient raised decking. Our glulam beams are treated to ground contact retention. All posts and beams are finished in our rich, signature brown.

Glulam Posts & Beam Wood Benefits

Find A Dealer

Looking for your nearest KDAT lumber dealer? We have stocking yards throughout the United States.

Glulam Posts & Beams Photo Gallery

Glulam Posts & Beams FAQ & Information

Brown Treated Wood FAQ

Common Questions About Glulam Posts & Beams

Watch this short, 1-minute video about the 6 benefits of brown treated wood.

Northern Crossarm Company products brown treated wood products in all dimensional sizes. They are available in green (natural) wet, finished with a rich brown (wet), or as a KDAT (kiln dried after treatment) finished with brown coloring (dry).

We offer both options of brown treated (wet) and KDAT (brown). The exception is that our posts (4x4s, 6x6s), 5/4 patio decking, T1-11 shed siding, WP4 Tongue & Groove – all of these products are coated with a rich brown finish, but are not Kiln Dried After Treatment.

To find your nearest brown treated wood dealer or retail location, please give us a call at 715-723-4100, or send us an email with your name and zip code to

Glulam Posts & Beams Resources

FREE 37-Page KDAT Lumber Guide

The Ultimate Guide to KDAT Lumber

Kiln Dried After Treatment (KDAT) wood is pressure treated lumber that’s been dried after the pressure treating process to deliver better resistance against warps, cups, twist and checks.

Glulam Post & Beam Wood Articles

90-Day Stocking Dealer Program

Try our top-selling KDAT for 90 days, risk free – if it doesn’t sell, we’ll pay to ship it back!