SUMMARY OF HARDWOOD FACE GRADE CHARACTERISTICS

Ash, Birch and Maple (See Pictures)

Cut

Plain-Sliced, Quarter and Rift Cut

Grade Description

AA

A

B

Colour and Matching

White

Red

Nat.

White

Red

Nat.

White

Red

Nat.

Sapwood

Yes

No

Yes

Yes

No

Yes

Yes

No

Yes

Heartwood

No

Yes

Yes

No

Yes

Yes

No

Yes

Yes

Colour Streaks or Spots

No

No

No

Slight

Slight

Slight

Yes

   
Colour Variationa

No

No

No

Yes

Slight

Slight

Yes

 

Yes

Sharp Colour Contrasts at Joints

No

No

No

Type of Matching
Sequence Matched

Book Matched

Slip Matched

Pleasing Matched

Yes

Yes

Specify

---

No

Yes

Specify

---

No

Specify

Specify

---

Nominal Minimum Width of Components in Face

5"

5"

4" If book or slip

Natural Characteristics

Small Inconspicuous Burls & Pin

Knots - Combined Avg. No.

1 per 5 sq. ft.

6 per 4'x8' panel

1 per 3 sq. ft.

10 per 4'x8' panel

1 per 2 sq. ft.

16 per 4'x8' panel

Burls - Max Size

No

1/4"

3/8"

Knots Max. Size;

Dark Part

Total

 

 

1/4"

 

1/8"

1/4"

1/8"

Scattered Sound and Repaired

Knots - Combined Avg. No.

Max. Size - Sound

Max. Size - Repaired

Avg. No. - Repaired

No

No

1 per 8 sq. ft.

4 per 4'x8' panel

3/8"

1/8"

1 per 8 sq. ft.

Mineral Streaks

No

Slight

Slight

Bark Pockets

No

No

Few to 1/8"x1"

Worm Tracks

No

No; Ash, slight

Slight; Ash, yes

Vine Marks

No

Slight

Yes

Cross Bars

No

Slight

Yes

Manufacturing Characteristics

Rough Cut

No

No

Slight

Blended Repaired Tapering Hairline Splits

Two 1/32"x3" on
panel ends only

Two 1/16"x6"

Four 1/8"x8"

Repairs

Very small inconspicuous

Small inconspicuous

Inconspicuous

Special Characteristics

Select and Uniform colour

Red only available in Birch

Red only available in Birch

Red only available in Birch

Unfilled worm holes, open splits, open joints, open bark pockets, shake or doze not permitted in above grades. One inch = 25.4 mm; one sq. ft. = 0.0929 square metres.

Notes: Under Colour and Matching, Red (R) available in birch only, Brown (B) available in Ash only.

aMaple: slight

 

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