Advance Guard® Borate Pressure Treated Wood 
Product Standards

 

 
Incising
Pressure Treatment
Pressure Range

Minimum Retention
as B2O3
Penetration 
Requirement

Exposure to Formosan Termite
Exposure to Insects and Decay Fungi
Thicknesses under 
114 mm
(under 4.5")
Thicknesses 114 mm 
or more
(4.5" or more)
Eastern White 
Pine
Not required
340-1040 kPa
50-150 psi
4.5 kg/m3
0.28 pcf
2.7 kg/m3
0.17 pcf
13 mm (0.5")
and 90% sapwood
13 mm (0.5")
and 90% sapwood
Coastal Douglas 
Fir
Required
340-1040 kPa
50-150 psi
4.5 kg/m3
0.28 pcf
2.7 kg/m3
0.17 pcf
10 mm (0.4")
and 90% sapwood
13 mm (0.5")
and 90% sapwood
Amabilis 
Fir and Western Hemlock
Not required
340-1040 kPa
50-150 psi
4.5 kg/m3
0.28 pcf
2.7 kg/m3
0.17 pcf
10 mm (0.4")
and 90% sapwood
13 mm (0.5")
and 90% sapwood
Spruce-
Pine-Fir
Required
520-1200 kPa
75-175 psi
4.5 kg/m3
0.28 pcf
2.7 kg/m3
0.17 pcf
10 mm (0.4")
and 90% sapwood
13 mm (0.5")
and 90% sapwood
Ponderosa Pine
Not required
520-1380 kPa
75-200 psi
4.5 kg/m3
0.28 pcf
2.7 kg/m3
0.17 pcf
10 mm (0.4")
and 90% sapwood
13 mm (0.5")
and 90% sapwood
Veneer Core Plywood
Not required
340-1040 kPa
50-150 psi
4.5 kg/m3
0.28 pcf
2.7 kg/m3
0.17 pcf
All veneers
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Tim-bor® is registered by U.S. Borax Inc.
Advance Guard® is a trademark of Timber Specialties Co.
Advance Guard® Protected Wood is produced by independently owned and operated wood preserving facilities.

Advance Guard® Borate Pressure Treated Wood