If the roof shingles and all accessory roof components are arranged and overlapped with this in mind the roof should successfully shed water.
Where should 1st roof shingle start.
Understand the physics of how a sloped shingle roof works.
Repeat this on both sides of the roof.
Asphalt roofing shingles simply rely on the force of gravity to shed water from rain or snow melt.
Inspect the underlying roof sheathing for damage and make any needed repairs.
If your roof s width is not an even multiple of the shingle s length you will have a partial piece on one end of each row.
Hammer down any large nails that are exposed by the removal.
Finally nail the first course of shingles directly on top of and flush with the starter course.
Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles.
Starter shingles are the initial shingle products installed on the roof just before the first course of the finish shingles which will comprise the visible parts of the roof.
Set the first shingle of the second row back a half tab 6 inches 17 centimeters from the edge of first shingle on the first row and so that the bottom of its tabs just touches the tops of the cutout slots on the shingle below.
The specifics of how shingles are laid on your roof vary by manufacturer.
Measure the length of a shingle as it lies across the roof.
Once this course is laid you can begin snapping horizontal chalk lines up the roof to ensure straight rows.
This 1 2 tab has to be cut off where it hangs off the left edge of the gable roof.
Using your staple gun secure the felt to the roof.
Use four roofing nails per shingle as indicated on package instructions six nails in high wind areas.
Get the real story about drip edge placement.
Contractors start at the bottom of the roof and work across the roof s surface and up.
Otherwise the siding installer will need to be extra cautious with the new roof.
Start from the top of the roof and remove the old shingles along with the flashing underlayment and vents.
Lay the second row of shingles.
Start by laying asphalt felt or other underlayment over the roof.
Some roofing shingles such as duration are applied with a 6 1 2 inch offset and a 5 5 8 inch exposure over a prepared roof deck.
Every roof has to start somewhere and that somewhere is at the appropriately named starter shingle also called starter strip.
On the other hand you ll find some siding parts need to be nailed down under the roof shingles.
Some roofing components such as the flashing are easier to install without the siding.
In the dictionary to shingle is.
Every 5 inches make a new mark until you get to the rop of the roof.
Install a layer of roofing insulation as recommended by the roofing manufacturer.
In this sense it seems more practical to install the siding first.
This will help determine how the shingles will lay on the roof width.