How To Cut Cupola Base To Fit Roof

Mark both sides of the cupola the same way and use a saw to cut out the angle along your marked lines.

How to cut cupola base to fit roof.

First remove ridge cap where cupola will be installed. You may need to use the utility knife to trim the shingles back. Line up the pivot point of the template with the center line and make sure the corners of the template meet with both. If you do you will need to patch this spot with vycor rubber flashing tape or flashing and shingles to prevent water intrusion.

I cut the hole with my circular saw 4 inches smaller than the base on all its sides. Predrill holes in the 2 4 mounting blocks and apply silicone to the bottom of the prior to attaching them to your roofing. A 45 degree roof can be scary take your time and have proper staging. Take two 1x4 boards lay them on edge pushing them tight against your roof and fasten together.

Since roofs have all different pitch angles the manufacturer leaves it up to the installer that s you to cut it down to size. E g a 30 square cupola would have a 24 square hole be sure not to cut any structural members. To do this you must first determine roof angle or make a pattern using two boards as shown in this image. This will be your cutting line.

Start cuts at corners and end at center. This is the most difficult part of the project. The second step in any cupola installation is to properly cut out your cupola base. You are only cutting away the shingles and plywood sheathing.

Cut the cupola base to match your roof s pitch the base of your cupola comes square. When i opened the roof a rush of warm moist air can out. Cut and remove only the ridge shingles and or ridge vent up to the outer edge of where the cupola will sit. Using your cutting template make a line from each corner to the centerline.

In order to bevel the soffit parts set the blade at 45 degrees and the fence 4 3 4 in. To cut the pieces that will form the sill of the barn cupola bolt a 1x6 to the saw s fence to keep the workpiece from tilting set the blade at 19 degrees and position the fence 3 4 in. Mark the cupola base draw a centerline on the cupola base as shown. Mark the boards apply another screw.

I knew then the added ventilation would be helpful. Preparing your roof draw a center line on the cupola base on two opposite sides these will become the angled cutouts for your roof. This becomes your cutting template. Cut a hole in the roof that is at least 6 smaller than the inside perimeter of the cupola base.

Trace a line along both inner sides of the. Mount four sections of 2 4 blocks to fit flush inside the edges of your cupola.