Frequently Asked Questions

Lumber Guide is an educational platform designed to help people understand wood and lumber in a clear, practical way. It covers everything from basic wood science to how lumber is made, used, and selected for real projects. 

For structural use, lumber is typically graded to standards so builders and inspectors can trust its performance. If you are building something structural, always confirm you are using materials that meet local building requirements. 

A grade stamp is a marking that communicates important information about lumber, such as classification, species grouping, and other identifiers. It helps standardize wood products so they can be used consistently in construction. 

No. Species, moisture content, growth characteristics, and classification all affect how wood performs. Lumber can look similar but behave differently under load, which is why standards and grading exist. 

No. 2 is a common grade used in residential construction. “And Better” means the bundle may include higher grades, but you should not assume every piece exceeds No. 2 requirements. 

2x4 is a nominal size. After drying and planning, the finished size is smaller. This is normal and standardized, so builders can design accurately. 

SPF is a common Canadian grouping that includes Spruce, Pine, and Fir species used for structural lumber. It is widely used for framing and general construction. 

Yes. Better material selection, proper moisture handling, and correct use can reduce movement and long-term issues. Quality lumber and good installation practices support durability. 

Green lumber has higher moisture content and will change more as it dries. Dry lumber is more stable and is less likely to shrink or warp after installation. 

Atlantic Canada has a strong history of forestry and wood products. Choosing regional wood supports local jobs and can offer consistent, trusted supply for many uses. 

Grading and standards help ensure consistency so wood products can be selected appropriately for their intended use. This reduces risk and supports safer building outcomes. 

Knots are natural. Standards account for knot size and location to ensure the wood still meets performance expectations. Properly classified lumber with knots is normal for construction. 

Most movement comes from moisture changes and uneven drying. Storage, exposure, and installation conditions all influence whether lumber stays straight. 

It depends on the project and local requirements. For structural applications, materials often need to meet certain standards. For non-structural uses, local sawmill lumber can be great when properly selected and dried. 

Rounded edges are usually for handling and comfort. They do not automatically mean the lumber is weaker, and many standard products include eased edges. 

HT means heat treated. This marking is often associated with pest control requirements for shipping and packaging, not necessarily everyday building use. 

Yes. Climate, species mix, forest management, and processing all influence wood characteristics. Different regions may produce wood that is better suited to certain uses. 

Yes. Wood products from Atlantic Canada are used across Canada and can be exported depending on product type and market requirements. 

Wood is widely used because it is strong, versatile, and efficient to build with. It is also renewable and stores carbon over its lifetime when used in long-lived products. 

Wood is in the buildings we live and work in and in many everyday products. Understanding wood helps people make smarter buying decisions, reduce waste, and appreciate a key renewable resource.