heat thermal orange fire sunIf you’re looking for a beautiful custom home exterior, include American hardwoods in the mix. New, environmentally friendly treatment methods now make hardwood an excellent and great looking material choice for outdoor living spaces.

“American hardwoods in outdoor applications used to be taboo,” says Linda Jovanovich of the American Hardwood Information Center. “These days, restrictions and concerns are distant memories, and hardwoods are confidently being installed outdoors as siding, decking, fences – you name it – thanks to non-chemical heat treatments that improve the dimensional stability and durability of this wonderful product.”

A recipe for success

Thermal modification is a non-toxic process that simply “cooks” wood in heat. During the process, oxygen is removed from the oven to prevent the wood from burning. The high heat – in excess of 400 F – produces a naturally durable wood that is permanently resistant to water, insects and decay.

Bob Miller, director of sales and marketing intelligence at Frank Miller Lumber Company, says that because the treatment process drastically reduces modified wood’s moisture content and limits its ability to absorb moisture, products are more dimensionally stable – making them less prone to cupping, warping, expansion, and contraction with changes in humidity.

“The process also removes organic compounds from wood’s cells, eliminating a food source for insects and fungi,” Miller adds. “Simply put, thermally modified wood is a natural and healthy alternative to chemically preserved, pressure-treated wood. And it’s affordably priced, too.”

At home in the outdoors

Successfully used in Europe since the 1980s, thermally modified wood has been slow to migrate to America. But, Scott Seyler, who handles export sales at Northland Forest Products, says the durability and dimensional stability of thermally modified hardwoods are major advantages that interest new custom homeowners.

“With all that thermally modified wood offers, it’s quickly becoming popular for siding, decking, trim, and flooring,” Seyler explains. “Depending on the specific treatment process, locally sourced ash, poplar, maple, and other hardwoods are performing just as well, if not better than cedar, popular imported species, and composite materials.”

Finishing it off

Through the thermal modification process, a rich chocolate color results, highlighting the wood’s natural beauty and providing a luxurious look. But like any other wood, over time, if not sealed, thermally modified hardwood will naturally weather to a shade of gray because of exposure to the sun’s ultraviolet rays.

“Most new custom homeowners prefer the rich, dark color of the modified wood, and choose not to apply a stain or to cover the grain pattern with paint,” says Hal Mitchell, vice president of domestic sales at Atlanta Hardwood Corporation. “We do, however, recommend applying a UV-inhibitor sealant to all sides and ends of the wood, to preserve its color and prevent graying.” He added that, “Since thermally modified hardwood is resistant to water, water-based finishes may not perform well. We’ve found that oil-based sealants and finishes work best.

“I have a screened-in porch with tongue-and-groove flooring made from thermally modified sweet gum,” Mitchell says. “It looks fantastic and is performing well because it doesn’t cup from exposure to the elements. The material is great for outdoor applications if sealed properly. No other wood can do that based on my experience.”

Looking for ideas?

Consider adding timeless beauty to your custom home’s exterior with thermally modified American hardwoods.

Source: www.HardwoodInfo.com

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