How far down should sheathing go?

The wall sheathing should extend below the rim joist

rim joist

A rim joist's relationship to the joists is similar to what the top or bottom wall plate is to the studs. It is also confusingly called a header (header also refers to other framing components) or rim board. Collectively, the end joists and rim joists are called band joists, especially in regard to deck construction.

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Rim joist - Wikipedia

, which is inset on this house to allow for a continuous band of insulation. The wall sheathing below dictates the overhang. It's about 9 inches in this case, and Ben subtracts a quarter inch to allow for inconsistencies.

How far should sheathing overlap foundation?

protect lower part of wall sheathing with bituthane membrane. overlap sill-to-foundation joint with a minimum 2-inch overlap.

Should wall sheathing cover the sill plate?

Should sheathing overlap foundation? The advice when installing wall sheathing is to overlap and install flashing, providing a means to direct moisture away from the foundation. Pros often seal the sill when the wall sheathing overlaps the sill plate.

Does sheathing go to top plate?

Determine the top location for your sheathing. Often this is simply the center of the double top plate for vertical installation. Set your first sheet (at any sensible location) at that top position and aligned with the center of a stud layout. Set all remaining sheets at the top and gapped 1/8" at the sides.

Should sheathing Touch foundation?

Generally, you want your siding to overlap your foundation by approximately 2 inches. However, you also want your siding to be at least 6 inches to 8 inches from the ground. Combining the reasoning for these two thresholds will help you decide where to run the bottom edge of your siding.

WATCH THIS BEFORE Sheeting Your Roof With OSB!!! (avoid this costly nailing + spacing mistake)

How much space should be between siding and ground?

In most cases, siding clearance should be about 6-8” from the ground. If it's done improperly, the siding may be too close to the ground, which will invite insects, pests, and other types of damage. However, if it's done properly, your siding will last for many years to come, protecting your home and your family.

How do you close the gap between siding and foundation?

Use duct tape and place it at the top portion of the siding strip, spanning until you get to the lowest part. Close the gap with a caulk gun, sealing between all the strips. Let the caulking dry before removing the duct tape, then repeat the process on the other strips.

Should sheathing overlap at corners?

Sheathing usually starts at the end of a wall, or it overlaps one stud width (3½" or 5½") to cap an adjacent wall, but rarely will carpenters lap that extra half inch. There are a couple reasons for this: It's better to be slightly short than too long with sheathing.

Does sheathing go over the rim joist?

The wall sheathing should extend below the rim joist, which is inset on this house to allow for a continuous band of insulation. The wall sheathing below dictates the overhang.

Should sheathing be staggered?

Staggering panels by at least two supports is recommended. During the installation of OSB, the rough surface side should be facing up. This rough side is a screened or skid-resistant coated side. The panels should be spaced 1/8-inch apart at the ends and edges.

Does sheathing have to end on a stud?

Securing the sheathing to the frame

Important, DO NOT fasten the four corners first. To secure the panel to the stud, start at the top left corner of the panel and fasten the panel to the vertical side stud from top to bottom.

Should wall sheathing be installed vertically or horizontally?

After much research on the matter – as it impacts tiny houses – I've landed on a rule-of-thumb to follow: If the height of a wall is less than 8-feet, install the plywood (or OSB) vertically. If the height of a wall is greater then 8-feet, install the plywood (or OSB) horizontally.

Do you need to stagger wall sheathing?

As Thor states in his book, if your designer requires staggering, then “stagger away”. In most cases by fully sheathing the wall, we already have a wall that is far stronger than it needs to be. So be careful about using the argument that because it is stronger that is the way it should be done.

Does Tyvek go over or under flashing?

Always use positive shingling by installing Tyvek® WRBs and Self-Adhered Flashing products from bottom to top, with upper layer installed over lower layer.

How thick should sheathing be?

The U.S. Department of Energy has determined that 7/16-inch sheathing is the minimum appropriate thickness for structural wall sheathing with an exception for gable end walls, where the minimum thickness is 3/8 inch.

How thick should exterior plywood sheathing be?

The International Residential Code specifies 3/8-inch plywood for sheathing walls with a standard stud spacing of 16 inches, if the siding is nailed to the studs through the sheathing. If the nails penetrate the sheathing, but not the studs, the minimum plywood thickness that the IRC designates is 1/2 inch.

Which side of OSB faces out on walls?

Using OSB Safely

When installing in vertical applications such as wall sheathing, you'll want to orient the smooth or stamped side facing out. The smooth side has a better moisture resistance and will ultimately provide better performance against weather.

Should the bottom of house siding be sealed?

DO NOT seal the bottom with any sort of impermeable caulking nor spray foam. The bottom should remain permeable so that if water gets behind your siding for whatever reason then it has an escape path.

Should the bottom of siding be caulked?

Butt-joints….

NOTE: Generally, we do not recommend caulking butt-joints on cedar siding. Natural siding boards are designed to expand and contract with the elements and we do not want any adhesive to prevent their natural movement. We only caulk butt-joints on cedar siding if previously caulked.

What goes at the bottom of siding?

Most manufacturers produce a starter strip that secures the bottom course of siding to the sheathing and holds it at the proper angle. As shown in the diagram, a wooden spacer can be used to provide the proper angle for the first strip.