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Hardwood Stability  
 
Relative Stability of Selected Wood Flooring Species
(Ranked by percentage of tangential shrinkage from green to ovendry moisture content)
 
     
 

 
 
Source: National Wood Flooring Association
 
     
 

Hardwood Hardness

Below is a list of relative hardness for numerous wood species used in flooring. The higher the number the harder the wood. These ratings were determined using the Janka Hardness Test. This should only be used as a general guide when comparing various species of wood flooring. Depending on where the wood is harvested the results may vary + or -. Plank construction and finish are also important factors when determining the durability and ease of maintenance of any wood floor.

Relative Hardness of Selected Wood Flooring Species
(Ranked by Janka hardness rating)

  WOOD SPECIES  

RATING

 
 

Walnut, Brazilian

 

3680

 
 

Teak, Brazilian

 

3540

 
 

Purpleheart

 

2890

 
 

Cherry, Brazilian (jatoba)

 

2820

 
 

Bubinga

 

2690

 
 

Gum, spotted

 

2473

 
 

Mesquite

 

2345

 
 

Mahogany, santos

 

2200

 
 

Gum, Sydney blue

 

2023

 
 

Merbau

 

1925

 
 

Jarrah

 

1910

 
 

Hickory/pecan

 

1820

 
 

Padauk

 

1725

 
 

Wenge

 

1630

 
 

Maple, Brazilian

 

1500

 
 

Sapele

 

1500

 
 

Maple, hard

 

1450

 
 

Cypress, Australian

 

1375

 
 

Oak, white

 

1360

 
 

Oak, Tasmanian

 

1350

 
 

Ash, white

 

1320

 
 

Beech

 

1300

 
 

Oak, Northern red

 

1290

 
 

Birch

 

1260

 
 

Iroko

 

1260

 
 

Pine, heart (antique)

 

1225

 
 

Teak, Thai/Burmese

 

1078

 
 

Walnut, American black

 

1010

 
 

Cherry, black

 

950

 
  Pine, Southern yellow (longleaf)   870  
  Pine, Southern yellow (loblolly/shorlteaf)   690  
  Douglas fir   660  
         
  Source: National Wood Flooring Association  
 
 
 
Grade Levels  
 

Knowing where the floor will be installed is essential. Before choosing a floor, it is important to determine if the room is above, on or below ground level.

Engineered flooring can be used in most areas in the home including rooms below, on or above ground level.

Solid wood floors are only recommended for above ground-level installations and must be nailed-down to a wood subfloor. These floors perform better in humidity-controlled environments.

Engineered floors are ideal for concrete slabs.

 
     
  grade_levels  
 
Source: National Wood Flooring Association
 
     
 
         

 

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