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Nusku Thermacor is our domestic hardwood line that has been thermally modified to increase the overall stability & performance of the product. We utilize 100% domestic hardwood lumber species white ash & red oak largely because of their natural grain & character. Nusku Thermacor is a perfect example of our company highlighting the value & beauty of natural wood products.

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CONSISTENT QUALITY

The thermal modification process increases the durability & longevity while also creating consistent

color options

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THERMALLY MODIFIED

Heat & Steam are used to alter the wood fiber at a cellular level. This all natural process produces a superior product without the use of added chemicals

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DOMESTIC HARDWOOD

Red oak & white ash have been used for centuries providing beauty & durability to craftsman throughout the world

PRODUCT APPLICATION

NUSKU THERMACOR THERMALLY MODIFIED

We thermally modify our product to two temperatures to

create our desired performance & finish color

Our modified white ash & red oak will have 

similar finish colors as the modification process helps create

consistent color throughout, no matter the species

RED OAK

KILN DRIED

190  

MODIFIED 

0

0

210  

MODIFIED 

NUSKU THERMACOR THERMALLY MODIFIED

We thermally modify our product to two temperatures to

create our desired performance & finish color

Our modified white ash & red oak will have 

similar finish colors as the modification process helps create

consistent color throughout, no matter the species

6-8%

MOISTURE 

DECKING

The most common use for Nusku 

Thermacor because of the durability 

& strength of domestic hardwood

The natural grain of Nusku Thermacor

is ideal for siding applications where 

natural wood finish is desired

SIDING

Nusku Thermacor has many additional 

applications including railing, fencing

& outdoor ceilings

RAILING

1

2

3

NUSKU THERMACOR PATTERNS

Nusku Thermacor is available in S4S

as well as pre-grooved boards for decking, 

while T&G, shiplap & rainscreen patterns are

best for siding, ceiling & accent walls. Custom 

patterns are also available. 

DAY 1

Nusku Thermacor will have a natural brown tone when first installed. The material is thermally modified to the core, so this color is consistent throughout the product. 

NATURAL

THERMACOR
WEATHERING
PROCESS

DAY 730

Over a 2 year timeframe,  Nusku Thermacor material will naturally transition to a gray tone. This process does not impact the performance of the decking & original color can be restored with refinishing process.

Nusku Thermacor typically fits a more modern architectural style

with the color, grain and installation options

MOISTURE EXPOSURE

When natural wood products are exposure to rain, snow or moisture the extractives, including natural pigments can bleed out which in turn can lighten the color of the wood.

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UV EXPOSURE

When Nusku Thermacor is installed exterior, the greatest impact to silvering out is ultraviolet rays. UV rays are responsible for breaking down lignin in natural wood products which in time transitions the fiber to silvery-gray. 

INSTALLATION OPTIONS

Nusku Thermacor can be installed with a more traditional option utilizing screws, but when a clean finish without seeing hardware is desired our customers install with a variety of hidden clip options. There are a wide range of hidden fasteners that work with the standard Thermacor profiles, but we highly suggest using the Exoclad & Exodeck hidden clips.

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SHIPLAP

1x6 Square Channel

Shiplap siding can create a modern look when complimented by other materials like brick & stucco. 

INSTALL STYLE

Stainless Steel Screws

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DECKING

5/4x6 Grooved

Decking is the primary application for our Nusku Thermacor because of the products durability.

INSTALL STYLE

Hidden Decking Clip

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RAINSCREEN

1x6 Rainscreen Reveal

Rainscreen patterns have grown in popularity due to the clean look & easy installation options.

INSTALL STYLE

Hidden Rainscreen Clip

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