How To Cut An 8 Hole Roof

Replace a plywood section with new plywood cut to fit the exact size.

How to cut an 8 hole roof.

Carefully cut along the line to complete the hole. Take a pencil and trace the light on the underside of the roof deck. How to cut a round hole in sheet metal with tin snips or avaiation snips part 2 the sheet metal kid duration. That gives you a perfect oval about the size of the inside of the pipe or chimney.

Cut and use template to mark and cut sheet to fit pipe at angle. To find pipe end shape not hole in sheet enter 0 for sheet thick. The easiest way to do this is with an electric drill and a 1 2 in 1 3 cm metal cutting drill bit. For large patches nail 2 by 4 braces inside the existing rafters with 10 penny nails.

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. Please be careful when working on the roof or your rv. You won t need a pilot hole if you re cutting end to end across a sheet. Measure the smallest distance across the oval a line parallel to the ridge of the roof.

The sheet metal kid 134 891 views. Insert the reciprocating saw blade through the hole. The hole needs to be taller than your pipe diameter as the pipe isn t passing through the roof at a perpendicular angle. Make the hole in the center of the part you wish to cut then trim toward the guideline you drew.

Use a jigsaw to cut a rounded shape from the plywood to the exact size of the hole. It is necessary when you need to cut out the middle of a roofing sheet. Another way to do this is by hammering a nail or a screwdriver through the metal. Cut from the pilot hole to the outer edge of the marked oval.

Cutting a hole to fit a roof air vent does not have to be a very complicated process. 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.