What does it mean to incise lumber?

Incising is the process of piercing the surface of wood with small slits, before treatment, to allow more preservative to consistently penetrate beyond the surface of the wood. Incising improves protection and lengthens the service life of treated wood.

Is pressure treated wood incised?

For some western wood species, incising is a common process where the wood is resistant to preservative penetration, but the preservative will penetrate along the grain. These wood species are prepared by creating small incisions into the wood prior to the pressure treating process.

Is Southern Pine incised?

For those in the east and south – you may have never seen pressure preservative treated lumber which has been incised. Most treated lumber in those regions is Southern Yellow Pine – which is highly treatable (think of it as being a chemical sponge).

What is an incising factor?

Incising is a pretreatment pro- cess in which small incisions or slits are punched into the wood. Incising increases preservative retention and penetration during the treating process by increasing the amount of exposed, easily penetrated end-grain and by increasing the side-grain surface area.

Should you sand pressure treated wood?

All wood, except manufactured products like composite wood — even pressure-treated lumber — need to be sanded and stained. If you want it to last, you have to put in the time and some elbow grease.

What is .40 treated lumber?

Wood labeled LP-22 or 0.40, or both, is treated to withstand direct contact with the ground and is suitable for fence posts, deck supports, landscaping timbers and similar ground-contact projects.

What does PCF mean in lumber?

injected per cubic foot
Treatment levels are measured in pounds of chemical injected per cubic foot (pcf) of wood.

What is a incised?

1 : cut in : engraved especially : decorated with incised figures. 2 : having a margin that is deeply and sharply notched an incised leaf.

What is repetitive member Factor?

The repetitive member factor recognizes system performance. If one member should become overloaded, the load is distributed by sheathing to adjacent members which share the load. This factor is applied to the bending stress capacity of wood members which means it is useful in increasing moment carrying capacity.

Can you stain green pressure treated wood?

Not only can you stain treated wood, painting and staining pressure-treated wood is actually good for your new deck. Although the treated wood doesn’t need to be protected against rot, staining it will help reduce surface cracking.

What does AC2 mean in lumber?

MicroPro® AC2® pressure treated wood is treated using a waterborne copper preservative system developed to provide long-term protection for wood used in exterior applications. Continue reading to find out more about pressure treated wood before beginning your next BIG project!

What grade lumber is best?

Dense Grade (Premier and Platinum): These grades have superior density and strength properties. These same properties make this grade an excellent choice when appearance is a major concern. While it can have wane similar to that found in #1 Grade, it has tighter growth rings and contains smaller and fewer knots.

Is it OK to sand pressure treated wood?

Sanding pressure-treated wood is actually contraindicated because, as Sand & Stain warns, you’ll end up partially removing the protective coating created by the pressure treatment, and the wood will look terrible.

What is incising of wood?

From the Forest Products Journal [1], Incising is a pretreatment process in which small incisions, or slits, are punched into the wood surface.This increases the amount of exposed end- and side-grain surface area, which increases chemical preservative penetration and retention. Note: If the wood is not incised,…

What is incising factor?

Incising Factor Explained: This process includes permeating the wood with chemical preservatives to prevent decay-causing fungus to enter the wood. In most cases, this is possible by a pressure treatment, but certain species of wood must be incised (small slits into the wood), to receive the chemicals more readily.

Do you know about incising of lumber?

With my tremendous knowledge of incisors – I was able to easily translate to incising of lumber. For those in the east and south – you may have never seen pressure preservative treated lumber which has been incised. Most treated lumber in those regions is Southern Yellow Pine – which is highly treatable (think of it as being a chemical sponge).

How should factors be determined for incising patterns?

Note: If incising patterns exceed the above limits, then factors should be determined by testing or by calculation using reduced section properties. American Forest and Paper Association, “National Design Specification for Wood Construction”, 2005