Technical Document Library
Research-Backed Guidance for Every Project
Research-Backed Guidance for Every Project
Builder Tip
- N335
This publication provides step-by-step instructions for roof sheathing installation
Technical Guides
- A535
This publication describes several roof design and weatherproofing methods used to keep water out of a home’s interior.
Excerpt
- E30X-RC
This publication is an excerpt from the APA Engineered Wood Construction Guide, providing a description and application recommendations for engineered wood roof materials
Typical Details
- DT-EWG-2
This detail shows APA Rated sheathing panels installed as roof decking over rafters or trusses with panel clips, asphalt or wood shingles, and proper edge and joint spacing.
Technical Note
- R275
This publication provides recommendations from APA research on the performance of 24-inch and narrower roof sheathing panels
Construction Guide
- R305
This publication provides specification recommendations for plywood and OSB roof systems and installation recommendations for panel roofs
Technical Topic
- TT-083
This publication provides installation guidelines for hip-roof panel applications on trusses spaced 24 in. o.c. that address serviceability issues and improve performance
Typical Details
- DT-BB-5
This detail shows pan and cover tile roof ridge detail of APA rated sheathing.
Typical Details
- DT-BB-12
This detail shows wall-to-roof flashing detail at stucco-clad wall.
Typical Details
- DT-BB-11
This detail shows wall-to-roof flashing detail at brick veneer roof intersection.
Specification Guide
- SP-1103
This publication provides an overview of the APA trademark and includes a sample specification for APA Rated Sheathing.
Typical Details
- DT-EWG-5
This detail shows APA Rated wall sheathing applied in two orientations- strength axis across or parallel to studs- with weather-resistive barrier and siding on a wood-framed wall.
Product Advisory
- SP-1186
This publication discusses overstated published lateral load design properties of eight flexible structural sheathing products
Technical Guides
- D710
This publication includes recommended construction details for I-joists in roof applications.
Data File
- Z350
This publication describes techniques and products for code-required connections in wood roof systems in high wind and seismic zones.
Typical Details
- DT-EWG-35
This detail shows four connection methods for flat roof systems: to wood I-joists, open-web parallel-chord wood trusses, steel bar joists with wood nailer and glulam beams.
Typical Details
- DT-EWG-34
Stucco cladding assembly applied over APA Rated wood structural panel sheathing with two layers of weather-resistive barrier, self-furring metal lath, and metal bead.
Technical Guides
- G310
This publication presents tested assembly details for roof systems with APA wood structural panels used as substrate that meet classifications of FM approval or UL.
Typical Details
- DT-EWG-32
This detail shows a prefabricated APA wood structural panel roof assembly with purlins installed perpendicular to the supports.
Typical Details
- DT-FR-24
This detail shows a heavy timber roof assembly with wood structural panels, featuring heavy timber or glulam beams supporting tongue-and-groove wood decking with built-up roofing.
Typical Details
- DT-EWG-14
This detail shows brick veneer or masonry cladding installed over APA Rated wood structural panel sheathing.
Technical Topic
- TT-109
This publication discusses how wood structural panels can withstand earthquake, wind, wind suction and pressure loads while permitting the anchorage of lightweight siding materials
Typical Details
- DT-WRR-2
This detail shows wood roof assembly with plywood decking over purlins/trusses with two-ply asphalt glass fiber mat roofing system, rated UL Class 90
Technical Guides
- Q250
Determine the type and spacing of siding fasteners to meet building code requirements when using wood structural panel sheathing as a nail base (also called nailable sheathing)
Technical Topic
- TT-128
This publication discusses the results of a series of CAN/ULC-S102 tests of flame-spread rating (FSR) and smoke developed classification (SDC) for OSB sheathing in Canada
Typical Details
- DT-EWG-6
This detail shows APA Rated lap siding installed over wood structural panel sheathing with a weather-resistive barrier on a wood-framed exterior wall assembly.
Typical Details
- DT-EWG-7
This detail shows APA Rated siding panels applied over wood structural panel sheathing with a weather-resistive barrier on a wood-framed wall assembly.
Typical Details
- DT-FR-4
This detail shows a one-hour fire-rated wood-framed wall assembly with Type X gypsum sheathing and wallboard, optional insulation, and APA rated siding exterior finish.
Data File
- Q370
This publication describes recommended wall construction methods for the installation of stucco exterior finish over structural wood panel wall sheathing
Typical Details
- DT-IJ-11
This detail shows installation of a sheathing reinforcement on cantilevered I-joists at a vertical building offset and specifies a reinforcement for one side of the I-joist.
Typical Details
- DT-IJ-12
This detail shows installation of a sheathing reinforcement on cantilevered I-joists at a vertical building offset and specifies reinforcement for two sides of the I-joist.
Technical Topic
- TT-052
This publication provides information about the performance, proper specification and application of oriented strand board (OSB) products.
Typical Details
- DT-RH-1
This detail shows raised heel energy truss attachment to an exterior wall for additional attic insulation space.
Typical Details
- DT-FR-22
This detail shows a fire-rated wall assembly of stucco over self-furring metal lath with APA rated sheathing, optional insulation, gypsum wallboard, and wood studs.
Typical Details
- DT-FR-2
This detail shows a fire-rated wall assembly using wood structural panel sheathing over studs with gypsum wallboard, fire protective membrane, and glass fiber insulation.
Typical Details
- DT-FR-3
This detail shows fire-rated exterior wall assembly with APA rated siding over sheathing, insulation, 2x4 wood framing at 16" on center and Type X gypsum wallboard interior finish.
Technical Note
- C465
This publication provides installation recommendations and test results for energy-saving APA Sturd-I-Wall construction
Technical Topic
- TT-063
This publication discusses the advantages of using IBC and UL recognized oriented strand board (OSB) and plywood wall assemblies over other products.
Typical Details
- DT-EWG-28
This detail shows one-hour fire-resistive floor/ceiling assemblies using wood I-joists with APA Sturd-I-Floor decking and gypsum wallboard ceiling systems with furring channels.
Technical Guides
- T210
This publication details 10 common sources of air infiltration that should be checked and sealed during construction
Typical Details
- DT-FR-7
Fire-rated wall assembly of two UL-rated configurations (U330 and U335) with different exterior finishes over wood framing with mineral wool or glass fiber insulation.
Typical Details
- DT-WRR-1
This detail shows UL Class 90 rated roof assembly with two-ply asphalt glass fiber mat hot-mopped over plywood sheathing on wood framing with rayon tape.
Technical Note
- R525
This publication provides recommendations for minimizing moisture accumulation in panelized low-slope roof systems in commercial and industrial applications
Technical Topic
- TT-097
This publication explains the design considerations for installing a wood structural panel diaphragm over existing board sheathing (decking) in floors or roofs.
Technical Note
- J735
Provides recommendations for properly placing heavy loads in a partially completed light-framed structure to prevent damage to the structure and/or injury to the work crew
Builder Tip
- K310
Describes installation techniques for plywood and OSB roof sheathing and roof ventilation techniques that will help minimize the potential for buckling of asphalt shingles
Typical Details
- DT-EWG-31
This detail shows APA Rated sheathing panels installed as an open soffit on exposed roof rafters with weather-protected edges.
Typical Details
- DT-WWR-2
This detail shows a wind-resistive roof assembly with hot-mopped built-up roofing over APA-rated plywood sheathing and structural framing, rated U.L. Class 90.