Back Relieved

Channels milled into the back or bottom face of the material to help reduce nail blow out during installation and reduce cupping after installation.  Revient has the ability to back relieve flooring, but does not in standard products.  According to the NWFA, it is unnecessary in material with narrower widths.

Barn Wood Siding

Wide, thin boards used to protect the interior of a barn from the elements. Barn siding usually tends to be 1 inch thickness or less and can vary greatly in widths and lengths. Barn siding caries the burden (and beauty) of years of earth, rain, and sunshine to create a uniquely aged wood.  Colors vary from black to brown to red to gray or painted.


When the edges of the material are milled at an angle to compensate for slight variations in thickness between pieces. Most commonly associated with prefinished, skip planed, or original patina flooring, siding and paneling where the material is not able to be sanded smooth after installation. Micro-beveling possible.

Board Foot (BF)

The standard industry unit for wood volumes measuring 12"x12"x1" dimensions.

Character Grade

Material that can include occasional to frequent character.  This character may include knots, nail holes, checking, etc.


Cracks or fissures that appear on the surfaces of lumber during drying.  These checks can sometimes deepen  and intersect the full thickness of the material.  Surface checks do not significantly degrade the wood's structural integrity. Deeper checks can do that.

Circle Sawn

Surface texture created by a circular saw blade.  Commonly associated with material that was originally milled in the 19th and early 20th centuries.


A flared end, designed to fit into a similar shape recess, often used in a set to form a dovetail joint. 

End Cut

The squaring of the end of a board to remove unusable or rotten ends.

End Matched

Material with a tongue and groove profile on the ends to that the ends of the material slot into place.  Revient has the capability to outsource end matching if the client insists.  It is not required or recommended by the National Wood Flooring Association.  Often during install, the ends are cut square to accommodate the various lengths of reclaimed wood.

Growth Ring

Ring of wood on a cross-section resulting from periodic growth. Generally, the tighter or closer together the rings are, the older the wood is.

Hand Hewn

Any beam that was squared and shaped using a broad adzing axe. Hand hewn beam surfaces retain chipping characteristics and product a very unique and nostalgic look.


Wood produced by broad-leaved trees such as oak, elm, and ash

Mixed Grain

Material that includes both flat and vertical grain.

Moisture Content

The amount of moisture in a piece of lumber.  Expressed as a percentage of the material's weight consisting of water.  Moisture content needed of flooring will vary regionally.

Mortise Pockets

A hole cut into a timber to receive the tenon of another piece to hold it in place.  Common in barn timbers.

Naturally Distressed

Characterized by heavy surface texture, color variation, checking, and other signs of prior use and age created during the material's previous existence as part of a barn, etc.


The milled pattern along the edges of a piece. Common profiles include tongue and groove, ship lap, and edged.

S4S (Squared four sides.)

Material that is surfaced smooth on all four sides.

S3S (Squared three sides. )

Material that is surfaced smooth on the edges and bottom face with the surface left intact to show the wood's naturally weathered face.


The outer layers of growth between the bark and heartwood that contain the sap.  Often lighter in color           than the heartwood.  Typically softer than the heartwood.

Ship Lap

A lip-like pattern on the edge of a board so that each board may overlap and interlock.


When the material has just a light pass taken so the entire surface is not planed smooth.  It is generally done so you can see both the original weathering and saw marks while also revealing the figure in the wood.


Wood produced by coniferous trees such as pine and douglas fir. Non-porous.

Square Foot (SF)

The standard unit of measurement of any product that covers a surface area measuring 12"x12". Thickness of any product charged by the square foot is either standardized (such as 3/4" for flooring) or irrelevant (such as the varying thickness of barn siding).

Wire Brushed

By using a large brush with nylon bristles, the material will be cleaned up while still maintaining a subtle texture. Wire brushing pulls the soft grain from the growth ring leaving the heart wood exposed to the surface.