Sep 27, 2011 · July 2011 Fine Homebuilding's article about roof venting included a method for insulating cathedral ceilinged roofs with 6" of rigid foam topped with plywood sheathing and conventional shingles. I have a roof deck of 2x6 T&G on a post and beam constructed roof.

Synopsis: In this article, Mike Guertin takes an in-depth look at prescriptive deck-building codes when it comes to one of the deck’s most basic components: joists. He describes how joist spans and cantilevers are determined in both the IRC and Residential Wood Deck Construction Guide (DCA), and includes a joist-span table from the 2018 IRC to help explain how to calculate cantilevers and ...

How Far Can a Deck Joist Span? The latest building codes include deck joist span tables, but cantilevered joists can make calculations tricky.

Mar 6, 2009 · We often build in 4x8 modules (2x6 framing) if materials are being boomed on to the roof. We build smaller if materials need to be carried up or there are a lot of trees and the client says they plan to clean underneath. If you screw down the decking and run your framing parallel to the drainage planes the deck should last as long as the roof.

Dec 4, 2015 · I've been asked to review the deck in these pictures to see if t's safe. I've had a friend run the deck dimensions through the Simpson Strong Tie Deck application and the Sketchup drawing is what we have come up with. It's recommends 3-2x10's for the beam and 2x8's for the joists. My question is could I double up (sister together) on the 2x6's to maintain the height underneath. If it can't ...

Aug 4, 2007 · The east side of the deck will attach to a brick wall (the neighbor to the east has an original two story el) via all thread and epoxy (SS). At first I was considering using treated wood post bearing on the brick / 2X6 wall for the west side. This, of course requires cutting a hole in the roof and patching after.

Mar 11, 2008 · He used 2x6 T&G decking over 4x8 rafters @ 48" OC. Laid 4" foam board over the decking, laid plywood over that, and then screwed the sandwich together with Timberlock screws that were just the right length.

This code and deck beam span chart simplifies sizing deck beams for 2-ply and 3-ply built-up beams, ensuring proper construction and safety.

Apr 13, 2005 · The deck is on the second floor and is going over and epdm rubber roof.We plan on using pressure treated sleepers with rubber feet to allow for proper drainage.The difficulty is which type of ipe to use.. ( t&g, or s4s). The exposure is full sun with no roof above, which makes me nervous about using t&g.

Sep 5, 2024 · Building code expert Glenn Mathewson explains how to use the code tables to cantilever deck joists accurately, safely, and effectively.