How To Cut An 8 Hole Roof

Measure the smallest distance across the oval a line parallel to the ridge of the roof.

How to cut an 8 hole roof. That gives you a perfect oval about the size of the inside of the pipe or chimney. It is necessary when you need to cut out the middle of a roofing sheet. Take a pencil and trace the light on the underside of the roof deck. Cut from the pilot hole to the outer edge of the marked oval.

Print template at 100 printer scale. Nail the plywood sheet section to the braces with 8 penny nails. Select angle increment and hit full set to generate and print a full set of oval templates for currently entered pipe diameter. This video shows how to cut a 14 x 14 hole in your rv roof and install a powered vent fan i.

Use a jigsaw to cut a rounded shape from the plywood to the exact size of the hole. Insert the reciprocating saw blade through the hole. For large patches nail 2 by 4 braces inside the existing rafters with 10 penny nails. To find pipe end shape not hole in sheet enter 0 for sheet thick.

Cutting a hole to fit a roof air vent does not have to be a very complicated process. Make the hole in the center of the part you wish to cut then trim toward the guideline you drew. If you have any doubts about cutting a hole in your roof you can always have experienced roofers fit the vent for you but most people with a small amount of home improvement knowledge can complete it to a suitable standard. Please be careful when working on the roof or your rv.

Replace a plywood section with new plywood cut to fit the exact size. How to cut a round hole in sheet metal with tin snips or avaiation snips part 2 the sheet metal kid duration. The hole needs to be taller than your pipe diameter as the pipe isn t passing through the roof at a perpendicular angle. Carefully cut along the line to complete the hole.

The sheet metal kid 134 891 views. Now that the hole was cut my friend ran back down the ladder and up into the attic so that we could connect the vent pipe through the roof. Cut and use template to mark and cut sheet to fit pipe at angle.