Online Product Guide

Engineering Design Work
Drafter working on design

MiTek Sapphire

National Lumber is committed to intelligent customer service

MiTek Case Study - National Lumber

HIGH-Rim logo

Exclusive insulated rimboard product from National Lumber!

HIGH-Rim insulated rim board is made exclusively by National Lumber

Reliable Truss Insulated Headers
PDF Insulated Headers


Engineered Wood Products from National Lumber

National Lumber, a company you trust for building materials, is also a leader in Engineered Wood Products, serving builders throughout New England. We deliver the difference between strong framing and efficient, superior framing. We stock and supply engineered lumber and I-joists.

RAPID FRAME exclusively from National Lumber

Engineered Floor Systems with Inkjet Labeling
of Precision End Trimmed I-Joists, Pre-Cut Holes,
Pre-Applied Sub-Floor Adhesive & Insulated Rimboard

Our Engineering Wood Products (EWP) Division utilizes state-of-the-art technology, from initial design to product delivery, to produce cost-effective designs for our customers. Click here for our RAPID FRAME flyer

Experienced engineers and designers on staff will meet with you to anticipate and address problems before construction.

  • Our team will provide engineering services for our engineered wood products which are used as components in the completed structure
  • EWP Installation review report with punch list
  • Installation review certificates
  • Certified affidavits to building inspectors
  • EWP installation layouts and EWP calculations as needed
  • Estimating, scanning, and electronic file transfers
  • Steel design and supply
  • Precision end trimming
  • Pre-cut blocking
  • We pre-apply sub-floor glue to I-joists

National Lumber also features a full range of Boise Cascade Engineered Wood Products. We also supply engineered floor joists with precision end trim.

PDF Four Fire Protection Solutions

Here are a couple of articles on the importance of using engineered wood products in your projects, written by one of our in-house EWP experts, Phill Barrett:

Reducing your waste line

Enlarge Your Bottom Line by Reducing Your Waste Line

Reducing your waste line

Stop Squeaking Floors: "Mice Squeak, Your Floors Should Not!"



Customer Testimonial:

“I must admit I was skeptical about pre cut rafters but after the pre-engineered flooring system came together so nicely you earned my confidence.

Our reputation depends on building custom homes to exact standards. The coordination between the field and your shop was flawless and the final product was installed quickly without issues.

Well done... I will be working both systems into our future projects.”

- David Brookes, President, Brookes and Hill Custom Builders

See more testimonials >>

Four solutions for fire protection to meet regulations
PDF Four Fire Protection Solutions

Precision End Trimmed Engineered Wood Products
Precision End Trim (PET)

Stair Stringer
PDF Stair Stringers