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Results of Testing the Mould Resistance of the Product^{Footnote (1)}
Property	Requirement	Result	Performance
Non-leached Specimens
Lumber	Inoculated with 5 mould species, follow AWPA E24-12, mould growth rating of 0-5,^{Footnote (2)} after 12 weeks of incubation in a high humidity environment	0-1	Bluwood™ treatment was effective at providing almost complete resistance to mould growth in lumber and plywood.
Plywood	Inoculated with 5 mould species, follow AWPA E24-12, mould growth rating of 0-5,^{Footnote (2)} after 12 weeks of incubation in a high humidity environment	0-0	Bluwood™ treatment was effective at providing almost complete resistance to mould growth in lumber and plywood.
Benchmark 1	Inoculated with 5 mould species, follow AWPA E24-12, mould growth rating of 0-5,^{Footnote (2)} after 12 weeks of incubation in a high humidity environment		Bluwood™ treatment was effective at providing almost complete resistance to mould growth in lumber and plywood.
Mould resistance of known performance preservative: plywood lumber	Inoculated with 5 mould species, follow AWPA E24-12, mould growth rating of 0-5,^{Footnote (2)} after 12 weeks of incubation in a high humidity environment	0-1 0-1	Bluwood™ treatment was effective at providing almost complete resistance to mould growth in lumber and plywood.
Benchmark 2	Inoculated with 5 mould species, follow AWPA E24-12, mould growth rating of 0-5,^{Footnote (2)} after 12 weeks of incubation in a high humidity environment
Non-resistant untreated lumber/plywood to confirm mould producing test conditions: plywood lumber	Inoculated with 5 mould species, follow AWPA E24-12, mould growth rating of 0-5,^{Footnote (2)} after 12 weeks of incubation in a high humidity environment	4-5 0-4	Mould producing conditions confirmed

Results of Testing the Mould Resistance of the Product^{Footnote (1)} continued
Property	Requirement	Result	Performance
Conditioned^{Footnote (3)} – Leached Specimens
Lumber	Inoculated with 5 mould species, follow AWPA E24-12, mould growth rating of 0-5,^{Footnote (2)} after 12 weeks of incubation in a high humidity environment	0-1	After leaching, Bluwood™ treatment was effective at providing almost complete resistance to mould growth in plywood and lumber.
Plywood	Inoculated with 5 mould species, follow AWPA E24-12, mould growth rating of 0-5,^{Footnote (2)} after 12 weeks of incubation in a high humidity environment	1-2	After leaching, Bluwood™ treatment was effective at providing almost complete resistance to mould growth in plywood and lumber.
Benchmark 1	Inoculated with 5 mould species, follow AWPA E24-12, mould growth rating of 0-5,^{Footnote (2)} after 12 weeks of incubation in a high humidity environment		After leaching, Bluwood™ treatment was effective at providing almost complete resistance to mould growth in plywood and lumber.
Mould resistance of known performance preservative: lumber	Inoculated with 5 mould species, follow AWPA E24-12, mould growth rating of 0-5,^{Footnote (2)} after 12 weeks of incubation in a high humidity environment	1-1	After leaching, Bluwood™ treatment was effective at providing almost complete resistance to mould growth in plywood and lumber.
Benchmark 2	Inoculated with 5 mould species, follow AWPA E24-12, mould growth rating of 0-5,^{Footnote (2)} after 12 weeks of incubation in a high humidity environment
Non-resistant untreated plywood to confirm mould producing test conditions: plywood	Inoculated with 5 mould species, follow AWPA E24-12, mould growth rating of 0-5,^{Footnote (2)} after 12 weeks of incubation in a high humidity environment	3-5	Mould producing conditions confirmed

Notes:

Footnote 1

For enhanced mould resistance, meet F82-OH1.1 to minimize the risk of inadequate performance due to improper maintenance or lack of maintenance leading to inadequate indoor air quality.

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Footnote 2

In accordance with the American Wood Preserver's Association (AWPA) protocol, the ranges for rating are:

0 = no visible growth;
1 = up to 10% of mould covering surface;
2 = 10% to 30% mould;
3 = 30% to 70% mould;
4 = > 70%; and
5 = 100% mould over surface.

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Footnote 3

The conditioning to simulate rain during construction for coastal areas (28 days of rain, worst-case scenario).

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Results of Testing the VOC Emissions from the Product^{Footnote (1)}
Property	VOC Testing	Toxicological Assessment
Lumber	VOC testing protocol conducted in accordance with the California Department of Public Health (CDPH). VOC measurements taken after 10 days of conditioning.^{Footnote (2)}	Bluwood™ treated lumber, plywood and OSB do not pose a health risk to individuals residing in homes or buildings.^{Footnote (1)}
Plywood
OSB

Results of Testing the Hygrothermal Properties of the Product
Property	Bluwood™ Treated Product
	Lumber	Plywood	OSB
Thermal conductivity	No significant change^{Footnote (1)}	No significant change	No significant change
Sorption characteristics	No significant change	No significant change	No significant change
Water vapour permeability	No significant change	No significant change	No significant change
Water absorption coefficient	Slightly lower	No significant change	Slightly higher
Air permeability	No significant change	No significant change	No significant change

Results of Testing the Mechanical and Combustibility Properties of the Product^{Footnote (1)}
Property	Bluwood™ Treated Product			Other Products
Property	OSB	Plywood	Lumber	Glue Coated OSB/Lumber	Glue Coated Plywood/Lumber
Bending before and after aging APA PS-2 ASTM D4761/D198 ASTM D143	Modulus of elasticity (MOE): No significant difference Modulus of rupture (MOR): No significant difference	Modulus of elasticity (MOE): No significant difference Modulus of rupture (MOR): No significant difference	Modulus of elasticity (MOE): No significant difference Modulus of rupture (MOR): No significant difference	NA^{Footnote (2)}	NA
Shear (glue line shear) ASTM D1037	NA	NA	NA	No significant difference	No significant difference
Combustibility Cone Calorimeter ASTM E1354/ ISO 5660	−	−	Heat release rate, total heat release, mass loss rate, effective heat of combustion, smoke obscuration and toxic gas production were analyzed.^{Footnote (3)}	−	−

Notes:

Footnote 1

To ensure no adverse effects on the lumber or sheathing mechanical and fire properties: (i) meet F20-OS2.3 to support expected loads with no increase in risk of damage to or deterioration of building elements; and (ii) meet F02-OS1.3 to limit severity and effects of fire leading to collapse of physical elements due to fire.

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Footnote 2

NA = not available.

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Footnote 3

The combustibility parameters of wood products coated with the product suggest that the fire hazard related to fire severity (post-flashover) would not be significantly different using the coating. However, the smoke production rates of the coated specimens were significantly greater than the untreated specimens.

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Results of Testing the Metal Connectors Used with the Product^{Footnote (1)}
Property	Following AWPA E12-80^{Footnote (2)}
	Bluwood™ Treated Products^{Footnote (3)} ^{Footnote (4)}
	Carbon Steel C1010	Aluminum 2024	Electro-galvanized Steel	Hot-dip Galvanized Steel
S-P-F lumber – bare and coated	No significant difference	Coated S-P-F < bare S-P-F	Coated S-P-F < bare S-P-F < ACQ S-P-F	Coated S-P-F < bare S-P-F < ACQ S-P-F
DF lumber – bare and coated	No significant difference	No significant difference	No significant difference	Coated DF < bare DF < ACQ S-P-F
	ACQ Treated S-P-F Lumber
90% coated S-P-F	No	No	Yes	No
90% coated DF	Yes	Yes	No	No

Notes:

Footnote 1

To ensure fasteners do not corrode prematurely, meet F80-OS2.3 to resist deterioration resulting from expected service conditions leading to damage or deterioration of building elements.

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Footnote 2

The AWPA E12 protocol assesses the degree of corrosion (corrosion rate in mils per year [mpy]) after the metal coupons are sandwiched between two pieces of wood and subjected to high humidity (49°C, 90% relative humidity [RH]) for 366 h.

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Footnote 3

The results show that the Bluwood™ (P-6980) coated spruce-pine-fir (S-P-F) or Douglas fir (DF) demonstrates relatively low corrosiveness compared to untreated wood or alkaline copper quaternary (ACQ) treated wood.

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Footnote 4

This testing was conducted on metal plates and is a good indicator of the level of corrosiveness; however, it is important to investigate the performance with the actual fasteners (some innovative fasteners) driven into the member. This testing is ongoing and will form part of the next issue of this CCMC Report.

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