How hot or cold can it be when applying Penofin?
Generally speaking you should not apply Penofin out doors at temperatures under 45 degrees or above 80 degrees. A good rule of thumb when applying Penofin is to trust your own temperature gauge. If you put your hand on the wood and it is uncomfortably hot, it is too hot to apply Penofin. The product may flash (like oil in a hot pan) and dry on the surface. This will eventually cause darkening, and the coat will chip and peel. If your nose is cold, it is too cold to apply Penofin. The product will not penetrate the wood as efficiently at colder temperatures and the application will not last as long. Shirt sleeve weather is the ideal temperature range for a Penofin application.