1 2 Inch Osb For Roof

My solution when i built our garage was trusses on 19 3 center the canadian std and 5 8 osb.

1 2 inch osb for roof.

Sheets must have a 1 8 inch expansion gap between them and should be secured to the rafters. If you get 45 or more pounds of pull out resistance that s considered acceptable for most applications. Here in snow country 1 2 osb is standard with 7 16 being common for walls. 1 2 cat ps2 10 osb sheathing application as 4 x 8 item 12213 model 660663 compare find my store for pricing and availability 5 zip system 1 2 cat ps2 10 tongue and groove osb sheathing application as 4 x 8 item.

Oriented strand board questions page 2 y 2020 m 10 d 4 h 15cst bvseo bulk prod bvqa vn bulk 3 0 12 cp 1 bvpage1 co hasquestionsanswers tq 78 loc sid 100072564 prod sort sortentry order num. 1 2 vs 5 8 roof sheathing that amazing i dont know of one builder here in minnesota that uses 5 8 for roof decking most use 7 16 osb and have seen a few who use 3 8 cdx. Only once in many years of construction did i see someone pay for 5 8 osb on a roof presumably to prevent any slight sagging years down the road. 3 8 is insane walking truss to truss.

Roof leaks of course but also improper attic ventilation can cause condensation in the roof deck that can cause the osb to weaken. Around here southern mn the cities you can drive through the neighborhoods with cheaper houses the ones with trusses on 24 centers and 1 2 or 7 16 sheeting and most many will have sagged roofs. 30 years on it s working out fine. Isherwood jul 26 16 at 15 19.

3 4 is unheard of and i d consider it absurdly wasteful. Features span rated sheathing 32 16 roof floor on center spacing exposure 1 rated for limited exposure exterior glue for general construction sized for spacing panel width and length may vary up to 1 8 to aid with. Rediculous except for certain reasons on floors which has nothing to do with this question or 1 2 inch thick osb osb is made up of various chips of wood from different species of trees in a combination that will meet the wwpa structural specs. 7 16 is adequate but you dont want to have to many people or shingles in one spot.

Half inch osb is suitable for rafter spacings up to 24 inches whether or not the edges are supported.