Irc 2012 Require Siding To Be Installed Over Proper Decking

The irc specifies that decking boards must be made from 2 x 6 lumber or composite boards with a minimum spacing of 1 8 inch between boards.

Irc 2012 require siding to be installed over proper decking.

The figure shows the metal drip edge properly integrated below the roof underlayment along the eave and over the underlayment along the rake. Each decking board needs to be attached to each joist with two 8d nails or two 8 decking screws. Ledger may not be installed over siding or stucco. Not all jurisdictions will allow the installation of a new roof covering over an existing roof covering.

Mike guertin often sees housewrap installed improperly. The decking is usually 1 in. One major stipulation with the james hardie siding warranty is that it specifically states that if. Highlights from the american wood council s prescriptive residential wood deck construction guide a free guide from the american wood council offers a great quick reference and easy to read explanation of the 2012 international residential code irc with a special focus on single level wood deck construction in residential homes.

Though many builders think of the irc as a low bar bare minimum when it comes to wrb installation the code is actually best practice learn more about the building code for housewrap installation here. Thick and some siding types require there be a 2 in. Many localities allow the use of 1 1 4 inch ipé or teak boards but it s best to check first. This may seem excessively tall but is needed in order for the water resistive barrier wrb and siding to overlap the top.

Air space between the decking surface and bottom of the siding course. Drip edges shall extend a minimum of 0 25 inch 6 4 mm below the roof sheathing and extend up the roof deck a minimum of 2 inches 51 mm. Building codes may require an evaluation of the decking and roof to wall connections when a substantial portion of the roofing materials are removed from the roof diaphragm of a building located in a high or special wind region. The american wood council document called the.

The wall leg is at least 7 in. Removing existing siding and installing osb has several benefits such as having brand new substrate on the home and the ability to inspect the wall cavity and all framing insulation and structural integrity of the home before replacing siding. It must be fastened directly to the rim joist or stud or through sheathing into an appropriate framing member. A drip edge shall be provided at eaves and gables of shingle roofs.

Adjacent pieces of drip edge shall be overlapped a minimum of 2 inches 51 mm. Chapter 9 of the irc includes figure r905 2 2 1 which depicts the proper installation of a metal drip edge underlayment and asphalt roof shingles over a wood deck figure 15.