Irc 2012 Require Siding To Be Installed Over Proper Decking

Mike guertin often sees housewrap installed improperly.

Irc 2012 require siding to be installed over proper decking. This may seem excessively tall but is needed in order for the water resistive barrier wrb and siding to overlap the top. This will require exact location of bolts 2. 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. 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.

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. Air space between the decking surface and bottom of the siding course. 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. One major stipulation with the james hardie siding warranty is that it specifically states that if.

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. The figure shows the metal drip edge properly integrated below the roof underlayment along the eave and over the underlayment along the rake. The american wood council document called the.

Each decking board needs to be attached to each joist with two 8d nails or two 8 decking screws. Know how many people are aware of this but a supplement to the irc will be out shortly if not already concerning deck connections. Adjacent pieces of drip edge shall be overlapped a minimum of 2 inches 51 mm. Many localities allow the use of 1 1 4 inch ipé or teak boards but it s best to check first.

It must be fastened directly to the rim joist or stud or through sheathing into an appropriate framing member. 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. Thick and some siding types require there be a 2 in.

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. 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.