Georgia-pacific APA Engineered Wood Construction Guide - Walls Manuel d'utilisateur télécharger pdf (Page 12)

Wall Construction

ENGINEERED WOOD CONSTRUCTION GUIDE

■

FORM NO. B360P

■

WWW.APAWOOD.ORG

APA Sheathing Under Stucco

Greater stiffness is recommended for wall sheathing when stucco is to be applied. To increase stiffness, apply the long

panel dimension or strength axis across studs. Blocking or a plywood cleat is recommended at horizontal joints. Blocking

is required for shear wall and wall bracing applications. For panel recom men dations applied horizontally or vertically,

see Table 25.

Siding Joint Details

The siding joint details in Figure 17 are based on the use

of APA trademarked siding. Nailing of wood structural

panel siding along both edges of shiplap joints (“double

nailing”), as shown, is required for shear walls or those

wall segments that must meet bracing requirements.

Double nailing is recommended for all other applica-

tions as well to provide maximum wall strength and

moisture protection.

Where caulks or joint sealants are indicated, consider

the various types available such as urethane, plasti-

cized acrylic latex, butyl and polysulfide. Check with

the manufacturer of the caulk or sealant to determine

suitability for the intended application and compati-

bility with coatings and other building materials such

as vinyl and aluminum.

In some cases, a foam backer rod or other type filler

material may be used behind the sealants as recom-

mended by the manu facturer. For best results in other

cases, apply caulking to framing at panel edges before

installing the siding panel; or apply a bead of caulk

along the panel edge before installing the next panel.

A 1/8-inch space is recommended at all edge and end

joints unless otherwise indicated by panel manufac-

turer. If caulk is to be used, also check with caulk

manu facturer for recommended edge spacing. Nails

through battens or other wood trim must penetrate

at least 1 inch into studs. Nail panel siding 6 inches

o.c. along edges and 12 inches o.c. at intermediate

supports. To prevent staining of siding, use hot-dip

galvanized, aluminum, or other nonstaining nails as

described on page 48.

Siding is often fully exposed to weather and thus has

increased susceptibility to elevated moisture conditions.

Although siding will periodically experience mois ture

contents above the threshold value needed to support

decay, wood-based siding products have a good history

of performance because they dry below this threshold value before decay can initiate. If trim is installed around siding, be

sure that it doesn’t trap moisture or reduce the drying ability of the wood. Trim that is applied incorrectly can lead to long-

term moisture accu mu lation that causes decay.

Apply flashing or other means of protection over end grain of siding to minimize water absorption.

APA RATED SHEATHING

Stucco

FIGURE 16

STUCCO OVER APA PANEL SHEATHING

Metal bead

Self-furring

metal lath

Two layers of

building paper

required*

Note:

*International Building Code

requires two layers of

grade D paper for stucco

over wood-based sheathing.

Check local building code and applicator

for specific requirements.

TABLE 25

RECOMMENDED THICKNESS AND SPAN RATING FOR APA

PANEL WALL SHEATHING FOR STUCCO EXTERIOR FINISH

Stud

Spacing

(in.)

Panel

Orientation

(a)

APA Rated Sheathing

(b)

Minimum

Performance

Commentaires sur ces manuels

Pas de commentaire

Georgia-pacific APA Engineered Wood Construction Guide - Walls Manuel d'utilisateur Page 12

Commentaires sur ces manuels

Produits connexes et manuels pour Pour la maison Georgia-pacific APA Engineered Wood Construction Guide - Walls