This is particularly true of the hem fir material we use in the west but can also be a problem with southern yellow pine though it accepts pressure treatment more readily.
Using non treated pine for siding.
Reputable manufacturers offer warranties of 15 to 30 years against rot decay and insect attack.
Treated wood also known as pressure treated wood or pt is widely available to consumers for home and garden projects.
This is due to chemical preservatives.
Yes you can use untreated pine outdoors but you shouldn t make it your first choice.
The only way to properly use untreated wood of any type outside is with the addition of water repellent preservatives sealer or paint that contain uv protection.
Wood for indoor projects should be left as is.
Use a spoon to fill in holes any holes or uneven areas as you go smoothing it over with the putty knife.
Wider boards 1 2 x 6 and larger have a habit of checking and cupping when exposed to prolonged heat and moisture.
Antique pine often has a dark mellow color.
The easiest way how to treat untreated wood for outdoor use is to apply a wood sealer.
Where to use pressure treated wood.
Pine is a poor choose for siding in the northeast and it is far more expensive than spec grade vinyl siding.
Even though pine is used often for trim when it is used to side an entire building expect the following problems.
Wood for any outdoor project should be pressure treated.
The sawdust from pressure treated wood is an irritant to the eyes skin and nose.
It s easy to end up with megablotches and it s hard to avoid grain reversal a peculiar effect that makes stained pine look unnatural.
While many homeowners wonder if they should use pressure treated wood for a specific project the answer is simple.
But even pressure treated wood isn t entirely immune because the chemicals don t penetrate completely leaving the interior of the lumber unprotected.
Pressure treated pine is going to hold up against the elements much better.
Treated pine however can be a great solution for other outdoor projects including decks or even fences.
You can find treated lumber plywood lap siding and even specialty items like lattice and pre cut stair parts.
Use the putty knife to flatten out any bumps bubbles or thick areas as you even the first coat.
Some options to treat untreated wood are wood oils top coatings sealers and stain sealant combo products.
Over the counter wood preservatives are available in clear versions or with stain containing pigment or dye to color the wood.