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SPF means Spruce, Pine, Fir.

Four species, White Spruce (Picea glauca), Engelmann Spruce (Piceaengelmanni), Lodgepole Pine (Pinus contorta), and Alpine Fir (Abieslaciocarpa) comprise the spruce-pine-fir species group. All yield high grade timber with relatively small, sound tight knots. Lumber produced from spruce-pine-fir Species is marketed together as SPF.

SPF lumber is a distinctly white wood, with very little color variation between springwood and summerwood. The wood has a bright, clean appearance, ranging in color from white to pale yellow, with a fine straight grain and smooth texture.


Kiln dried SPF lumber is used as a structural framing material in all types of residential, commercial, industrial and agricultural building applications.

Kiln dried SPF lumber is also used extensively in the manufacturing of prefabricated housing, trusses and other structural components. In addition to producing high quality structural lumber, with a little preparation, SPF can be made into very appealing, economical solid wood furniture.


Structural lumber, trusses, prefabricated housing, exterior decking, preservative treated poles, railway ties, outdoor furniture

Technical Specifications:

SPF lumber is seasoned uniformly in dry kilns to a moisture content of 19% or less. Kiln drying inhibits natural staining of the wood, improves its strength and stiffness, enhances its appearance and increases its resistance to decay and attack by insects.

SPF has a high strength-to-weight ratio and is well known for its outstanding working properties. It takes and holds nails exceptionally well and is easily worked with hand and power tools. It has good gluing, painting and staining properties.

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โˆ™ 2014-04-25 18:42:03
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Q: What is SPF lumber?
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What is the weight of 2 x 8 SPF lumber?


Is spf lumber better than syp lumber?

It is a grad for lumber, but the more important grading is the number it will be SPF number 1 or 2. 2 is the more common grade used for construction etc. Most of your big box stores carry 2 because it is cheaper. The SPF is also so the manufacturer does not have to keep lumber separated by species. Spruce Pine and Fur all are about the same quality and strength. SYP -- Southern Yellow Pine --- is another triple name brand of wood but is actually just one kind of wood

What is the different between spf 15 and spf 30?

spf 30 is for lighter skin

What does the spf stand for?

spf stands for sun protection factor

What type of wood is house lumber made of?

It depends on your location. In the here in the northeast we use spruce. Usually in the south they use Douglas fir. A generic term is SPF (spruce-pine-fir). All of these woods have similar characteristics, and are largely interchangeable for construction purposes. =========================== Douglas Fir is stronger than SPF category. In the southeast we do not use Douglas Fir. We use Southern Yellow Pine for horizontal members. SPF is usually used for studs.

How much SPF is in Neutrogena Lip Moisturizer?

It has an SPF of 15 (I know because I have it)

Which level of spf is recommended?

if your headed to the beach.. spf 50 would be best..

What spf number do doctors recommend when exposing yourself to the sun?

An SPF of about 30

What is spf on sunscreen?

On sunscreen bottles, SPF stands for 'Sun Protection Factor'.

What lip gloss has the highest SPF?

Neutrogena makes a spf 30 lipgloss.

Is there a spf 100?

Yes, Neutrogena makes it, it is called " Spectrum+ Advanced sunblock lotion SPF 100+." As matter of fact, I have seen SPF 110!!!

What is the highest spf?

The highest SPF I have located is 110 for both Face and Body: Face: Neutrogena Age Shield Face - SPF 110 Body: Banana Boat Kids Max Protect & Play Continuous Spray Sunscreen SPF 110 Banana Boat Ultra Defense Sunscreen Lotion SPF 110 Banana Boat UltraMist Sport Performance Sunscreen SPF 110

What is the most common pine type used for 2 by 4 blocks of lumber?

Most #2 grade 2 x 4 studs are labeled "SPF" for Spruce, Pine, Fir. The pine is usually Ponderosa Pine.

Would adding spf 30 sunscreen to spf 50 sunscreen make it spf 80 sunscreen?

No. SPF 30 lets in 1/30 of burning UV rays, while SPF 50 lets in 1/50. Adding the two together is pointless and would not result in high levels of skin protection.

Does the SPF count?

"The Sun Protection Factor (SPF) displayed on the sunscreen label ranges from 2 to as high as 50 and refers to the product's ability to screen or block out the sun's harmful rays. For example, if you use a sunscreen with an SPF 15, you can be in the sun 15 times longer that you can without sunscreen before burning. Consumers need to be aware that SPF protection does not increase proportionally with an increased SPF number. While an SPF of 2 will absorb 50% of ultraviolet radiation, an SPF of 15 absorbs 93% and an SPF of 34 absorbs 97%." from

What SPF number do doctors or pharmacists recommend you use when exposing yourself to the sun?

SPF 20

What SPF number do doctors recommend you to use when in the sun?

Doctors recommend 30 SPF or higher.

What does SPF 45 mean?

SPF stands for Skin Protection Factor. 45 is the level of protection it produces. 45 is quite a good SPF. It is mainly used in sun creams.

Does spf over 30 work?

Yes, it does, but sunscreen with 100 SPF isn't much higher in protection that 30. 30 SPF blocks about 97% of the UV rays, but 100 SPF blocks maybe about 98-9%, so there really isn't much difference.

Is the correct plural of lumber is lumber?

Yes. Lumber.

Can you get lumber after getting lumber shed in harvest moon?

when you have the lumber shed it will not show the lumber but in fact it DOES go into the lumber shed to get the lumber out press on the shed I HOPE I HAVE HELPED YOU

Does a higher spf number mean more protection?

Yes, the higher the SPF, the more sun protection you will get.

Is SPF 50 good for skin?

Yes, it is fine. If you have fair skin you can wear an even stronger SPF.

What do the SPF values mean on sunscreen?

SPF means Sun Protection FactorSunscreen and SPF can be confusing, we'll explain the differences and what works best and will protect you from sunburn as we move into the summer months.

How much SPF is in lip balm chap stick and lip moisturizers?

Lip balms, chap sticks, and lip moisturizers do not always have SPF in them. If they have SPF protection, the number will be printed on the tube or the packaging.