Roof Plank Sheathing

Hello everyone i come across many roofs like this with space sheathing people that don t know about roof specs think you need to install.

Roof plank sheathing.

Was your roof originally built with shiplap. What s roof sheathing made of. Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. Zip sheathing is a pretty hot topic with some differing opinions.

Plank decking in older homes plank decking may have been used for the roof decking substrate. In the first half of the 20th century roofs in missouri were built with wood shingles over planks spaced about 1 apart. Roof decks on homes built before 1970 are often 1 8 fir pre plywood shiplap. Both materials are made of.

The plank problem typically sheathing problems are isolated to small areas but old plank sheathing presents more of a challenge. On older homes planks were often spaced for wood or slate roofs with wider exposures than the standard 5 inch tab on asphalt shingles. Plank sheathing usually 1 6 or 1 8 was used as a roof deck before plywood. Again if this type of decking is discovered during the tear off of the roof shingles a thorough inspection must be made to make sure that it is in good overall condition and that the gaps between the individual.

Until the 1940s exterior grade plywood was not available. The issue guertin explains is the gaps between boards. Typically plank decking material is either 1 x6 or 1 x8 lumber. Sheathing should be a minimum of 19 32 inch thick.

Your roofer will attach your shingles to these squares or planks of wood. So anytime your board decked roof is torn off and you want to install composition shingles be sure to lay down solid sheathing first. If you re replacing your cedar shakes roof check out our discussion of re sheeting over skip sheathing. The zip system is a structural sheathing intended for walls and roofs with an osb base and wrb weather resistive membrane which is basically a mesh that is attached to an osb sheathing panel with a paint applied.

8d ring shank nails should be used instead. The typical thickness range for sheathing is 3 8 to 3 4 inch. Never attach roof sheathing with staples. Sharp roofing is seattle s roof repair and replacement experts.