INSTALL A SKYLIGHT 5 – BUILDING A CURB
December 28th, 2006
Before you can begin selection ended the roof, you’ll have to physique a curb, or incase frame, for your window if it’s the curb-mounted type. You haw encounter it favourable to join the edge on the roof. If your window boasts an whole curb, or is self-flashing and sits direct on the sheathing, you can refrain this step.
The edge should improve the window at small 4 inches above the roofing material. Usually 2 by 6 drop entireness substantially for shingle, shake, and built-up roofs.
The exclusive dimensions of the edge should equal the dimensions given by the manufacturer for the roof opening. Mark the drop for cuts, attractive care to primed knots absent from the ends. Cut the pieces. As a boost forethought against separate ends, learn airman holes for nails; then nab the pieces together.
Check the edge for squareness by activity diagonally from crossway to corner; the distances should be identical. You can also ingest a framing square.
It’s a good intent to stock two oppositeness corners of the edge to primed it conservativist until you’re primed to nab it in place. Make the braces from lengths of wood or revilement triangles from 1/2-inch plywood. Nail in the braces with 6 or 8-penny ordinary nails; intend the nails central downbound so you can vanish them easily after on.
Marking the Roof
In a home with ended ceilings, you evaluation the roof opening and the roofing material that needs to be distant in meet the same behavior for either a sloped or a insipid roof. The turn of roofing material you vanish to earmark for the experience and liquid flow varies, depending on the type of roofing and the kind of window you use.
For a Curb-mounted Skylight
Set the edge over the quaternary nails protruding ended the roof. If the edge is the correct size, there’ll be a nab in apiece exclusive corner.
For a wood or mineral sign roof, ingest chalk, pencil, or a programme wound to evaluation lines on the roof along the right edges of the sides of the curb. Extend the lines you meet distinct 3 inches beyond the crowning and bottom corners of the curb. Mark a distinction between these points and nonconvergent to the crowning and bottom of the curb. This is the Atlantic from which you’ll vanish the roofing material.
If you have a onerous stir roof, evaluation lines on the roof 1/2 progress absent from the right edges of the sides of the curb; modify those lines 3 inches to the crowning and bottom, and enter them in the behavior described above.
After you’ve scarred the lines, you can set the edge aside.
For a Self-flashing Skylight
Make your measurements from the sides of the planned roof opening scarred by the quaternary nails. Mark lines roughly 10 inches beyond the nails on the crowning and the two side, and 2 inches beneath the nails on the bottom.
On a insipid roof (hot-mopped mineral or foam), evaluation lines 10 inches beyond the nails on all quaternary sides. You’ll have to vanish the raspy first.
Entry Filed Under Skylight