Laminated Plywood Stair Stringers

This material is much less likely to warp twist bow or shrink compared to traditional lumber.
Laminated plywood stair stringers. I m a contractor by trade and have used laminated plywood beams in structal applications. The best structural plywood sheets are always marine grade since they have smooth faces and no interior voids. I can purchase a 1 3 4 inch x 24 inch beam and rip it down to 19 inches to use for the main stringers. Locate appropriate gross depth of lvl 9 1 2 11 7 8 14 or 16 5.
Locate appropriate load 40 or 100 psf live load 4. That way i don t have to laminate anything no shrinkage issues and i can cut the stringers to any depth i want. We just had a post about stair stringers. Clearlam is a laminated veneer lumber product engineered and manufactured specifically for stair manufacturers.
These beams are glued and compressed under extreame pressure which virtually elimanates voids. Its lvl construction creates a stronger more durable product with greater dimensional stability. Stair treads are 11 inches deep but a laminate plank is usually only about 7 inches wide so you need to fit two planks together which means creating a seam in the middle. Luan plywood is not designed or graded as a structural plywood but an interior panel.
Rigidlam lvl stair stringers maximum horizontal stair stringer run how to use chart 1. This video shows installing engineered hardwood stairs and veneer on the stringers without the use of a stair tread jig that result in the finished stairs. Therefore it should not be your first choice for a structural laminated stair carriage or stringer. When considering appearance lvl is like plywood but the direction of the wood grain is.
And we back it up with a limited 10 year warranty. Unfortunately they re also the most expensive. Plywood fabrication scarfed to length plywood up to 10 x 50 laminated wood products cut to size plywood cnc machining beveled ship lap edges t g two or four edges custom grooving slide out floors sandwich panels stair stringers slave pallets plywood crates shelter and containment panels. But yes i ve done tons of stairs using 1 1 4 poplar plywood.
It s factory primed to save both time and money. With no structural value of its own laminate flooring is basically just a covering for existing wood or plywood stairs that are in good condition and free of rot or mold.