Accelerated Weatherometer Testing

NuKlear and four leading wood sealing products were applied to Southern White Pine. They were sent to our resin supplier who has QUV test equipment. The samples were subjected to high uv light, heat, cool and moisture at predetermined rates.

The samples were inspected under each parameter and given a relative numbered value in a blind analysis.

200 Hours of Testing
Product	Color Change	Water Repellency	Mold Growth
NuKlear	Excellent	Excellent	Excellent
Product B	Excellent	Average	Poor
Product C	Average	Poor	Poor
Product A	Poor	Fair	Excellent
Product D	Poor	Fair	Excellent
Control	Fair	Poor	Excellent

600 Hours of Testing
Product	Color Change	Water Repellency	Mold Growth
NuKlear	Excellent	Good	Excellent
Product B	Excellent	Average	Fair
Product C	Poor	Poor	Poor
Product A	Poor	Poor	Fair
Product D	Poor	Fair	Excellent
Control	Poor	Poor	Poor

Product A Contents: aliphatic hydro-carbons -- solvents -- chemical in State of California known to cause cancer

Product B Contents: aliphatic hydro-carbons -- solvents -- pigments

Product C Contents: water, silicon emulsion

Product D Contents: petroleum distillates and linseed oil

Control: This board, of course, had no protection at all.

Products from these companies used:
Cabot, Behr, TWP, Thompsons
QUV Test:
4 hr. on 4 hr. off; 340 UV bulbs
200 hr. = 2 years sunlight
temp 40 C; RH 100%