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(636)441-0100

Pressure treated lumber undergoes a process of vacuum and pressure cycles within a sealed cylinder which forces preservatives deep into the cellular structure of the wood. It forms a chemical bond that resists decay and attack by insects. This bonding process locks the preservative into the wood, making it highly resistant to leaching or dissolving.

Our pressure treated lumber is available in MCA (micronized copper azole) pressure treating process. Hackmann stocks YellaWood® Decking and KDAT which are backed by a lifetime limited warranty.

YellaWood Treatment

YellaWood is the industry standard for treated lumber and is preserved with MCA. We stock a large variety of sizes up to 20’ lengths and have available many special sizes of lumber and timbers. Our treated 2x8, 2x10, 2x12 and 4x4’s are stocked in #1 yellow pine. Our 2x6 decking is stocked in a #2 prime.  Hackmann also offers in stock 5/4x6 Standard Treated Radius Edge deck planks. Radius Edge decking is offered in 12’ and 16’ lengths.

We offer both interior and exterior fired treated lumber supplied by Hoover Treated Wood Products®. The interior fire retardant is Hoover Pyro Guard® and the exterior is Hoover Fire-X®.   

Not sure what type of preserved wood you should select?  It helps to follow the American Wood Protection Association's (AWPA) Preserved Wood Use Categories.  This code is found on the end tag or treatment stamp of lumber.  If you're not sure which code is appropriate, this Use Category Diagram from Southern Forest Products Association should help.  

Preserved Wood Diagram

Use Category Brief Description
UC1 Interior Dry
UC2 Interior Damp
UC3A Exterior Above Ground, Coated with Rapid Water Runoff
UC3B Exterior Above Ground, Uncoated or Poor Water Runoff
UC4A Ground Contact, General Use
UC4B Ground Contact, Heavy Duty
UC4C Ground Contact, Extreme Duty
UC5A Marine Use, Northern Waters (Salt or Brackish Water)
UC5B Marine Use, Central Waters (Salt or Brackish Water)
UC5C Marine Use, Southern Waters (Salt or Brackish Water)
UCFA Interior Above Ground Fire Protection
UCFB Exterior Above Ground Fire Protection

Want to learn more about pressure treated lumber?  This publication from Southern Forest Products Association will tell you all there is to know about treated yellow pine lumber.  


KDAT #1 Yellow Pine

We also stock YellaWood Professional grade KDAT(kiln dried after treatment). KDAT lumber is stronger, lighter and cleaner to work with. It has reduced cupping, twisting and warping, has increased fastener holding power and can be stained or painted immediately after installing. KDAT YellaWood is the best choice for your next project for the best results at only a small up-charge.

SKU SIZE GRADE USE TYPE
A21012TKD 2x10 - 12' #1  UC4 KDAT .15 MCA
A21014TKD 2x10 - 14' #1 UC4 KDAT .15 MCA
A21016TKD 2x10 - 16' #1  UC4 KDAT .15 MCA
A21020TKD 2x10 - 20' #1  UC4 KDAT .15 MCA

Treated #1 Yellow Pine

SKU SIZE GRADE USE TYPE
A22PICT 2x2 - 42" Picket #1 UC3 .06 MCA
A228T 2x2 - 8' #1  UC3 .06 MCA
A288T 2x8 - 8' #1 UC4 .15 MCA
A2810T 2x8 - 10' #1 UC4 .15 MCA
A2812T 2x8 - 12' #1 UC4 .15 MCA
A2814T 2x8 - 14' #1 UC4 .15 MCA
A2816T 2x8 - 16' #1 UC4 .15 MCA
A2820T 2x8 - 20' #1 UC4 .15 MCA
A2108T 2x10 - 8' #1 UC4 .15 MCA
A21010T 2x10 - 10' #1 UC4 .15 MCA
A21012T 2x10 - 12' #1 UC4 .15 MCA
A21014T 2x10 - 14' #1 UC4 .15 MCA
A21016T 2x10 - 16' #1 UC4 .15 MCA
A21018T 2x10 - 18' #1 UC4 .15 MCA
A21020T 2x10 - 20' #1 UC4  .15 MCA
A2128T 2x12 - 8' #1 UC4  .15 MCA
A21212T 2x12 - 12' #1 UC4  .15 MCA
A21216T 2x12 - 16' #1 UC4  .15 MCA
A21218T 2x12 - 18' #1 UC4  .15 MCA
A21220T 2x12 - 20' #1 UC4  .15 MCA
A448T 4x4 - 8' #1 UC4 .15 MCA
A4410T 4x4 - 10' #1 UC4 .15 MCA
A4412T 4x4 - 12' #1 UC4 .15 MCA
A4416T 4x4 - 16' #1 UC4 .15 MCA
A2618T 2x6 - 18" #1 UC4 .15 MCA

Treated #2 Prime Yellow Pine

SKU SIZE GRADE USE TYPE
A268T 2x6 - 8' #2 Prime UC4 .15 MCA
A2610T 2x6 - 10' #2 Prime UC4 .15 MCA
A2612T 2x6 - 12' #2 Prime UC4 .15 MCA
A2614T 2x6 - 14' #2 Prime UC4 .15 MCA
A2616T 2x6 - 16' #2 Prime UC4 .15 MCA
A2620T 2x6 - 20' #2 Prime UC4 .15 MCA 

Treated #2&Btr Yellow Pine

SKU SIZE GRADE USE TYPE
A668T 6x6 - 8' #2&Btr UC4 .15 MCA
A6610T 6x6 - 10' #2&Btr  UC4 .15 MCA
A6612T 6x6 - 12' #2&Btr UC4 .15 MCA
A6614T 6x6 - 14' #2&Btr UC4 .15 MCA
A6616T 6x6 - 16' #2&Btr UC4 .15 MCA
A6620T 6x6 - 20' #2&Btr UC4 .15 MCA 

Treated #2 Yellow Pine

SKU SIZE GRADE USE TYPE
A168T 1x6 - 8' #2  UC4 .15 MCA
A1612T 1x6 - 12' #2 UC4 .15 MCA
A1816T 1x8 - 16' #2 UC4 .15 MCA
A248T 2x4 - 8' #2  UC4 .15 MCA
A2410T 2x4 - 10' #2  UC4 .15 MCA
A2412T 2x4 - 12' #2 UC4 .15 MCA
A2414T 2x4 - 14' #2 UC4 .15 MCA
A2416T 2x4 - 16' #2 UC4 .15 MCA

Standard Radius Edge Decking Treated Yellow Pine

SKU SIZE GRADE USE TYPE
A54612T 5/4x6 - 12' Standard RED  UC4 .15 MCA
A54616T 5/4x6 - 16' Standard RED  UC4 .15 MCA

Exterior Fire Treated Yellow Pine

SKU SIZE GRADE USE TYPE
2616EXTFT 2x6 - 16'   UCFB FIRE-X
21016EXTFT 2x10 - 16'   UCFB FIRE-X 
21216EXTFT 2x12 - 16'   UCFB FIRE-X

Interior Fire Treated Yellow Pine

SKU SIZE GRADE USE TYPE
2416FT 2x4 - 16'   UCFA PYRO-GUARD
2616FT 2x6 - 16'   UCFA PYRO-GUARD

Landscape Timbers

SKU SIZE GRADE USE TYPE
LT 3x4 - 8"   UC4  
RRT2 RAILROAD TIE 8' USED UC4 Creosote

When is your pressure-treated wood ready to paint or stain?  We've got the answer at your fingertips with this helpful video from YellaWood:

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