Cutting Out Wall Sheathing For Window Openings | Methods & Tools | Sawzall Jigsaw Circular Chain Saw

There are many ways to cut out wall sheathing for rough openings for windows and doors. In this video young home improvement & DIY'er Aiman will demonstrate the tools and methods to do so. Featured tool in this video is our new Milwaukee 2722-20 Super Sawzall Cordless Reciprocating Saw. If you are interested, here's the #ad link to buy:

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We have covered topics such as how to install the wall sheathing and OSB vs plywood in the previous few videos. The recommended method on installing the sheathing is the nail the full sheet onto the studs over the windows and doors fully covering the exterior wall. The rough openings for windows or doors will then be cut later. We will explain the logics behind this recommendation below.

In our case, because we've building a sun room with many windows, cutting the OSB board to size and aligning them against the edge of the windows make more sense because of the waste and to reduce cost. However, we install one OSB board over the window so that we can show you how most professionals would do it.

There are many tools that you can use to cut out the sheathing for rough window openings, and these are but not limited to sawzall, jigsaw, chain saw, circular saw, router and more. In our case we decided to go with using both the sawzall and a compact cordless saw. This is how we did it:

Working from the inside of the structure, drive four screws through the four corners of the frame of the rough opening. These screws must protrude entirely through the OSB with room to spare, so use a 2-inch screw just to be safe. These four screws poking through the other side will define a shape that has the same dimensions as the rough opening you want to create. Be careful to make sure the screws are exactly in the corner of the rough opening. To do that, use an extended bit on your drill so the screws are not angled, as that would change the position of the cut lines. Move to the outside of the wall and string a chalk line between the four protruding screws. Snap the chalk line by pulling the string away square to the wall, not at an angle. Alternatively, you can drill out a hole at each corner and use the four holes to trace a guide line using carpenter pencil.

Use a circular saw to plunge-cut your lines to within 3 or 4 inches of the corners. You don’t want to run your circular saw blade right into the corner, because at that point the saw blade would cut into the framing beneath the sheathing. Once the circular saw cuts are done, finish the cuts with a reciprocating saw loaded with a long wood blade or a jigsaw. You can trim excess using chisel if you are a perfectionist.

Upon completion, you’ll have a rough opening cut in the OSB that’s exactly the same dimension as the frame, without having to guess where to make any of the cuts.

Exterior wall sheathing strengthens the wall system, provides a nailing base for the siding, and gives a layer of protection against outside elements. The sheathing is usually plywood or a material called oriented-strand board, or OSB. Exterior wall sheathing is either structural or non-structural. Structural exterior wall sheathing ties framing studs together, making the walls resistant to twisting and bending.

Installation of structural exterior wall sheathing occurs after the structure’s walls are framed, secured to the slab, plumbed, and braced. Sheathing also provides a surface for application of materials, like siding, and helps shield a building from rain, snow, wind, etc. Installing structural exterior wall sheathing involves first preparation then application.

So far in this patio-porch project we have covered topics such as initial planning, drawing, cutting & framing studs for rough window opening, installing the wall frame, how to make perfect long cut on long piece of wood, attaching wall sheathing using pneumatic guns, nails vs screws and cutting out for window openings.

In the next few videos we will be discussing how to plug the holes in sheathing or gaps between sheathing butt, install the Tyvek house wrap, windows, insulation, wiring and more, and our journey will continue from there...

For more videos on How We Plan To Convert Our Back Patio Porch Into A Usable Multi-Purpose Room please click on the following playlist: https://www.youtube.com/watch?v=v3um3wNdo8w&list=PLWTQPaDoIjN1P4MVj9SEY1jxM5YkX3SjC&index=1

This video is brought to you by Aiman-Imran Anuar. You can watch more of #Remodeling_Our_Porch, #Aiman_Personal_Vlog and other videos with wide range of topics and themes on #EyeOnAiman Youtube Channel & Facebook Page.

NOTE: This video is NOT sponsored. Some product links are affiliate links which means if you buy something we'll receive a small commission. As an Amazon Associate I earn from qualifying purchases.

Recording Date: January 13, 2021
Video URL: https://youtu.be/U6SNUHIU_uc

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