NORTHERN CROSSARM COMPANY
Quality Since 1922.
"We're in our fourth year of stocking Northern Crossarm's Brown KDAT product line...KDAT Brown products are still our best selling point."
DAVID ALBERS
General Manager - Lampert Lumber - Faribault, MN
KILN DRIED AFTER TREATMENT (KDAT) LUMBER 
Why choose KDAT treated wood instead of "wet" or "green" treated lumber.
The rich, finished brown wood that's lighter, easier to handle, saw & plane. With minimized moisture content, you get a 100% finished, stable product with the added benefits of reduced warps, cups, twist, checks & cracks. 
KDAT LUMBER: The Definitive Guide
Want to read more about Kiln Dried After Treatment Lumber?
Are you considering KDAT (Kiln Dried After Treatment) Lumber for your next project. We've put together this handy 36-page guide that breaks down everything you need to know about Northern Crossarm's KDAT Lumber.
KDAT BROWN TREATED WOOD
Our flagship product. Rich, brown, Kiln Dried After Treatment Lumber.
KDAT Brown Treated Wood features a rich, brown finish that not only looks great, but performs exceptionally well thanks to our treating process. By Kiln Drying After Treatment, we’re able to improve both the performance and stability of pressure-treated wood.The finished product? A beautiful, treated piece of wood that’s lighter weight, easier to handle, easier to saw and plane while minimizing common characteristics like warps, cups, twists, checks, cracks, shrinks and swells.
  • End uses include interior and exterior above ground, ground contact and fresh water immersion.
  • Better corrosion resistance for exterior code-approved fasteners and hardware.
  • No need to wait 6-12 months before staining.
DECK COST CALCULATOR TOOL
Building with KDAT Brown as an alternative to Green or Wet Treated Lumber
NORTHERN KDAT DECKING
A traditional radius edge profile. Kiln Dried After Treatment. Finished in rich brown.
Northern KDAT Decking is lighter weight, easier to handle, and easier to saw and plane while minimizing common characteristics like warps, cups, twists, checks, cracks, shrinks and swells.
  • Traditional Radius Edge Profile
  • 1-3/8" thickness providers greater stability
  • Stress-relief cuts promote a flat surface
POST & BEAM KITS
Span up to 20' and supporting up to 16'x20' decks.
Kits are available up to 24' and do not require extra posts for support that traditionally obstruct views in walkout-type application. Brown hardware increases the attractiveness of the post and beam system and matches KDAT Brown treated joists and rims.  Kits include:
  • Glue-Lam Beam (KDAT Brown)
  • Glue-Lam Post (KDAT Brown)
  • Beam-To-Post Connection Brackets (Powder-Coated Brown)
  • ​Joist Hangers (Powder-Coated Brown)
STAINS & SEALERS
A durable wood finish that protects against water, fungi & UV radiation.
Northern KDAT Deck sealer is a durable wood finish that helps protect against the damaging effects of water, fungi and UV radiation. Our deck sealer not only protects the appearance of wood, but enhances its performance. Our Cut-N-Seal is ideal for sealing cuts in pressure treated wood. Water-based, it ads a rich brown cedar color while repelling moisture where cuts expose wood above ground.
STOCKING DEALER TESTIMONIALS
Hundreds of stocking dealers across the United States.
"As someone who's been involved with deck building for 30 years, I'm definitely a fan of Northern Crossarm's KDAT (kiln dried after treating) lumber...By using KDAT lumber for our deck frames, we receive fewer callbacks and that's good for business." 
- Bob Heidenreich - Owner
The Deck Store - Apple Valley, MN.
Northern Crossarm Company
PO Box 34
Chippewa Falls, WI 54729
Phone: 715-723-4100