On a shingled roof you just nail the tarp in place using furring strips but you can not nail a tarp into a tile roof.
How to secure a tarp on the roof.
Lay the tarp out flat over the roof.
Fully secure your roof tarp to prevent flapping.
If required cut plywood as needed cover up any existing penetrations with plywood secure the perimeter with screws every 6 to 12 into the roof sheathing below preferably into trusses unroll the full tarp make sure that the length extends 1 past the edge of the roof on the damaged side.
It is best to also weight the tarp down with sandbags or heavy objects to keep wind from blowing up under it.
Secure the tarp s remaining sides with additional 2 x 4 boards using your screw gun and screws.
Find the source of the roof leak.
This will prevent water and debris from entering the damaged area.
You want to get long 3 inch nails to get plenty of bite into the roof s sheathing and still be able to bend an upper portion of them to secure the tarp.
Lay the tarp across the roof so that at least 4 feet 1 2 m lies on the sloped part of your roof on each side known as the peak.
The 2 by 4 should be about 2 feet longer than the tarp width.
Positions several 1 2 pieces of lumber on the tarp running vertically down the slope of the roof.
Once every grommet has a bent nail in it add a dab of roofing tar into each grommet hole around the nail that penetrates the roof to protect against leaks.
Lay more 2 by 4s on either side of the tarp and attach those as well for a tight well secured water barrier.
The screws must pass securely into the roof.
To secure a tarp to your roof.
Screw the 2 by 4 directly into the roof to secure it.
You can use 2 3 inch wide double sided tape to secure the tarp to the tile.
Extend the top edge of the tarp over the ridge of the roof.
Then fold the excess tarp under a few rotations for a tight clean fit.
Stretch a tarp flat on the roof.
Let the rest of the tarp hang off the lower border of the roof that overhangs the wall known as the eave.
Pull the other end of the tarp over the peak and down the roof far enough to cover the leak then secure that end to another 2 by 4.