Treated Lumber

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The treatment of wood to prolong its life against moisture and decay dates back thousands of years. The ancient Greeks would soak their bridge wood in olive oil, while early Romans coated their ship hulls with tar. Commercial treatment of lumber dates back to the late 1800’s when creosote was used to coat railroad ties. Today there are a number of ways in which lumber is treated for use in residential and commercial applications, including industrial pressure treatment using various approved preservative products.

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PRESSURE TREATED LUMBER

Pressure-treated wood is lumber that has been deeply infused with preservatives to make it moisture and decay resistant. It comes in various sizes and grades and is used for many applications including decks, lamp posts and mailbox posts, boardwalks, picnic tables and utility poles, to name just a few.

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FIRE-RETARDANT TREATED LUMBER

Pressure-impregnated Fire Retardant Treated Wood (FRTW) is required by building codes in many major metropolitan areas for use in wall assemblies and for interior and exterior walls. It is designed to help contain the spread of smoke and fire, increasing the time that people have in which to evacuate a burning structure and move to safety.

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MicroPro Technology

MicroPro technology uses microscopic copper particles while pressure-treating lumber. MicroPro technology (a registered trademark of Koppers Performance Chemicals) protects against termite damage and fungal decay and has received Environmentally Preferable Product (EPP) certification.

MicroPro Treated Lumber

Size8'10'12'14'16'20'
2" X 4"
2" X 6"
2" X 8"
2" X 10"
2" X 12"
4" X 4"
4" X 6"
6" X 6"
5/4" X 6"
Key: = Available in MicroPro #1.15, = Available in MicroPro #1.34, = Available in MicroPro #2.34, = Available in MicroPro Premium .15

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Southern Pine

Nearly 85% of all pressure-treated wood used in the United States is Southern Pine. That’s because Southern Pine’s unique cellular structure is particularly suited to the absorption of preservatives without any reduction in its natural strength and stiffness. Hamilton Building Supply carries a variety of pressure-treated Southern Yellow Pine in varying lengths.

Southern Pine

Size8'10'12'14'16'
1" X 6" and
1" X 8"
2" X 6"
4" X 4"
4" X 6"
Key: = Available in Treated #D SYP .15 MCR, = Available in Treated #2 SYP .15 MCR, = Available in Treated #2 SYP .20 ACQ, = Available in Treated #2 SYP .21 ACQ, = Available in Treated #2 SYP MCR

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Pressure-Treated Plywood

Pressure-treated plywood is an exterior grade plywood for long-term resistance to rot and decay. It will resist decomposition from exposure and wetness from either rain, dripping outdoor appliances like snow blowers or tracked-in mud and moisture. It is the preferred flooring material for any outdoor shed, as it will perform well despite wet, humid and moist conditions.

Treated Plywood

Size     
4 X 8 X 15/32Available in CDX SYP ACQ .4 Treated
4 X 8 X 23/32Available in CDX SYP MCR .4 Treated

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Deck Accessories

Hamilton Building Supply carries a variety of deck accessories that have been pressure-treated and are impervious to weather conditions. These include:

2 x 2 x 48 - #1 Southern Yellow Pine / Surfaced Two Edges .15 MCR-Treated
4 x 8 - ACQ-Privacy Diagonal Lattice .4 CCA-Treated
2 x 2 x 8 - Treated Division Moulding
4 x 8 Heavy Duty Treated Diagonal Lattice .40 CCAQ
4 x 8 Heavy Duty Treated Square Lattice / ACQ Heavy Duty Treated Cap Moulding

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Fire-Retardant Treated Wood (FRTW)

D-Blaze® is pressure-treated FRTW, meaning that fire retardant chemicals are impregnated deep into the wood and locked into the wood fibers for lasting protection.
D-Blaze treated lumber and plywood is highly effective in controlling the spread of flames and smoke. It is particularly well-suited for load-bearing walls, roof trusses, roof decks and rafters, sub-floors, stairways and steps, to name just a few.

#2 SYP D-BLAZE

Size8'10'12'14'16'20'
2" X 4"
2" X 6"
2" X 8"

Fire-Retardant Plywood

Size     
4 X 8 X 15/32Available in CDX Fir – Fire Retardant
4 X 8 X 23/32Available in CDX Fir – Fire Retardant
4 X 8 X 19/32Available in CDX Yellow Pine - Fire Retardant