Finger jointed studs

Some finger-jointed products are manufactured from unseasoned lumber and may be gradestamped S-GRN. These products may be glued together in three ways: end-jointed (where fingers are cut into the ends of the pieces before they are joine hence the nickname finger-jointed lumber), edge glued or face glued. When we first started seeing finger-jointed studs , there might be two or three pieces in a 2X but over the years, the individual pieces have gotten shorter and shorter. The lumber companies are using every last bit of wood and not throwing anything away.

It’s a good practice. And these studs are strong for a vertical load. In Ontario the best brand of FJ studs we could find is Lamco studs. FJs a stud , which means straighter studs , shorter piece means less chance of warping. They are hard to get a hold of though.

Are finger studs better? What is finger joint lumber? While I had presumed that finger jointed studs where to be used for non-bearing walls alone, the state-of-the-art in finger jointed products has apparantly progressed to the point that even joists.

Then I discovered laminated strand lumber (LSL). I still recall seeing the ad for LSL studs in a trade magazine. The finger joint is then glued with a wood glue or other adhesive and clamped together to cure.

Once the glue is cured and the clamps are removed you can sand or plane the wood smooth so that the joint lines up perfectly and once painted the joint is usually. Stud-grade lumber can have knots and other strength-reducing characteristics that compromise performance under bending stresses but not in compression. Both finger - jointed and sawn studs are strong enough for short-term bending or tension loads (from win earthquakes, and impact, for instance), but not for long-term exposure. They’re strong but workable, light weight and long-lasting.

Using shorter wood sections bonded at the finger joint means using more lumber from each log. Your Assurance of Quality. A finger joint is small pieces of pine that are put together with these little finger joints that keep them very straight, actually, so they’re less expensive than fir studs, which I would prefer if I was building a custom home. Then they finger joint them on ends to form a longer piece of timber such as a stud. Generally straighter than solid timber.

Durable Floor Decking for Large Trucks and Vans. Moisture protection, vapor resistant and pre-primed overlays. More joints per piece: always or more.

Shop studs and a variety of building supplies products online at Lowes. All Rights Reserved. When finger jointed lumber is marked “STUD USE ONLY” or “VERTICAL USE ONLY” such lumber shall be limited to use where any bending or tension stresses are of short duration. To make structural finger jointed lumber, short sections of lumber are bonded into long, strong lumber needed for construction using code approved finger joints.

Finger Jointed Studs. This can cause big framer headaches, particularly for interior walls where the plate is full width. Cheap FJ studs will often have joints that are incorrectly offset, causing your drywall guy extra work. Grades for finger jointed studs use the same rules as unjointed lumber. The wood in the joints actually meets stricter requirements.

Design values are also the same as those for unjointed lumber. As specified on the grade stamp - vertical use only. Although it is mostly used for vertical applications, finger jointed lumber is an excellent replacement material for the standard studs found within most walls. Regulations also require that the adhesive used in finger jointed lumber is heat resistant and is marked with a HRA for multiple family or commercial residences. Structural finger jointed lumber means more lumber from each log.

Short pieces of kiln drie heat treated blocks are defect chopped and ripped and are then used in the finger joint manufacture process. Although finger joints have been described in a variety of ways, basically they are a modification of the plain scarf joint. In some finger joints a fold-ed scarf joint could more exactly describe their configuration (19).

Check the grade mark on the lumber. Although using correctly graded lumber is acceptable in the industry, I think using that for roof rafters where it may get wet over time could present future issues.