Remember, you need such spacing for ease of access when looking to replace your wiring systems in future. What’s more, the X-shape formed by the diagonal placement of the support braces usually leaves more room for electrical wiring and plumbing to pass through. The use of double braces in cross bracing allows for a more stable floor frame. For comparison, in wooden blocking, a single wooden block is usually installed perpendicular to two parallel joists. Visually, bridging differs from wooden blocking in that dual support pieces are installed diagonally across parallel joists. Some homeowners prefer bridging- also known as cross-bracing- to wooden blocking for floor reinforcement. Straight line blocking entails straight fastening of each wooden block to the joists only at one end, while using toe-nail fastening on the other end. However, the rewards usually match the effort as it gives off the best aesthetic appearance- especially if the substructure is visible over the lower deck. This method takes lots of expertise to correctly pull off. This method eases the blocking installation process, as you can drive screws or nails through the joists to the wooden blocks, instead of using toe nailing. AlternatingĪlternating is a blocking method that gives off a symmetrical appearance, since the boards are usually kept closer together. Joist blocking methods or patterns are the specific ways in which blocking can be installed- with a focus on aesthetic appeal.
#Ontario building code floor joist cantilever install
Also, you’ll want to install your floor joist blocks prior to undertaking sub-floor installation. Remember, a good alternative to using nails is screws, as they provide a more secure hold. You’ll want to place each blocking a bit off-center from the previous one to give you ample room for hammering in your nails.
Next, repeat steps one and two above for the next two joists (and so on, until the process is complete). Install the wooden block by hammering down a couple of nails on both sides to attach it to the two parallel joists. The depth of the cut-out piece for blocking should also match that of the joists. Measure the distance between two parallel floor joists– and cut out a solid wood piece of the same length. Also, don’t forget to wear the proper safety gear for construction projects, including a safety helmet, protective goggles, and hand gloves.Īfter assembling all the above equipment, follow the procedure detailed below to install wooden blocks between floor joists: Some of the tools you’ll need for this project include a ladder, a tape measure, a saw, a pencil, solid wood, some nails, and a hammer. How do you install a block between floor joists?Īs earlier mentioned, floor joist blocking is a labor-intensive process that calls for the use of multiple types of equipment. This is especially a common construction requirement if your joists are more than two inches wide and 12-inches deep. Therefore- despite being a labor-intensive process, you might not want to skip this part during floor framing.Īnd that’ not all! Depending on the state in which you reside, floor joist blocking may be a requirement under the building code. Wood blocking between joists serve to minimize joist twisting and joist movement, consequently helping prevent deck board-gapping. All in all- blocking provides increased lateral strength for a more stable floor structure. This means that even when someone stands on a single spot in the house, their weight will be distributed evenly in the joists underneath them- thus relieving pressure off the joist that’s directly below them. The woodblocks work to prevent the floor from bouncing by ensuring even weight distribution amongst the joists. What is the purpose of blocking between joists?īlocking entails the installation of short, wooden blocks for reinforcement of floor joists. 
3 How do you install a block between floor joists?. 
2 Is blocking required for floor joists?. 1 What is the purpose of blocking between joists?.
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