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0019 Shrinkage Properties of Wood - Roofing - Wood Shingles Shakes
 
0019 Shrinkage Properties of Wood - Roofing - Wood Shingles Shakes -

Image Text: Longitudinal shrinkage minimal (0.1%) > heartwood > tangential shrinkage (most significant up to 7%) > sapwood > radial shrinkage (up to 5%) > edge grain > No. 1 blue label > best quality > flat grain > No. 2 red label or lesser quality > flame > more prone to cupping, curling and splitting

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