Installing 1 2 In Plywood Over 1x2 Strips On Roof

I am installing a metal roof on a single wide trailer it has shingles on it i plan to remove and lay metal on the plywood i have been told i must use 2 4 perlins are they necessary also the roof has a vent that runs the length of the trailer i plan to remove it as well and run the metal over it is that acceptable.

Installing 1 2 in plywood over 1x2 strips on roof.

In most cases furring strips are 1 x 2 or 1 x 3 in size and can be applied both horizontally or vertically. If you re unfamiliar with what a furring strip is it s best described as a long slender strip that s constructed from either wood or metal. Tin roofing also known as metal roofing is considered more durable than composition or wood shingles. Some manufacturers want to see firring strips commonly 1x3 or 1x4 running up and down the roof supporting the center of the flat part of the panels not uslaly called for under the ribs because you are not supposed to step there i have seen 1x2 or 1x3 s called out for at the third points of the flat part the web on wider panel roofing.

By location the strip is called drip edge but by profile it is a 1x2. Every piece of 1 in. Create a level surface for attaching wallboard and paneling. Over time shiplap fir wood resin dissipates causing the boards to shrink crack form knot holes and become extremely brittle.

Today a shiplap roof is usually 60 years old. If there are gutters installed on the eaves the eave flashing should be installed to overhang the lip of the gutter by about 1 2 inch. Establish an air space perfect for masonry insulation and cedar shingle projects. The roofing is manufactured in panels that.

The existing plywood on my roof is only 3 8. Since a standard three tab asphalt shingle roof typically weights between 225 and 300 pounds per square the extra plywood will significantly increase the weight of the roof you install. He said it s only a difference of 1 8 thickness. After the 1960s the predominant residential roofing substrate became 1 2 cdx plywood.

If you choose to replace it any cuts or exposed bare wood no matter the location should be primed. I thought perhaps he made a mistake but no this is what he is proposing. Furring strip board is perfect for a wide range of uses including carpentry hobbies shelving and general finish work. A local roofer submitted a proposal to me for a roof placement that included replacing rotten plywood with 1 2 cdx.

It helps the longevity of the material. It should actually measure 3 4 by 1 1 2 cedar is a good choice to use it is available already primed. Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging. Metal furring strips come in two different styles.