It is very problematic to have nails located too high on the shingle.
How far apart should roofing nails be.
Run a tape measure from end to end along the rafters of the roof to determine how many purlins will be needed for installation.
Shingles will always look better but you need to wave a flame over the.
Nails of the proper length should penetrate three fourths of an inch into the roof deck.
Place nails in the three tab shingles about 3 4 inch 1 8 centimeters above the cutouts near where the tab meets the upper part of the shingle.
However make sure that you do not nail into the tar strip.
For slats featuring face widths of 12 inches you will space three nails evenly apart about every 3 inches.
They are easy to secure with a single nail at each end of the section.
When properly placed the nail will actually catch the top edge of the shingle below it.
Lay the first purlin at the ridge.
Also place a nail 2 inches from each end of the shingle in line with the other two.
The length of each nail must be a minimum of 1 inches long and for roof overs atlas recommends a nail length of at least 2 inches.
Generally you ll need to place two nails at each location where it makes contact with a roof truss.
A typical slat length can run from 12 to 16 feet.
Make sure there is a two inch space between the edge of the roll and the first nail.
Slats were commonly used in early home construction but are not used much today.
For the cambridge shingle nails must be applied into the nailing zone.
In this example the section of roof is 20 feet wide and 14.
Shed felt is generally s te hence the need for nails every 50mm it stops the wind getting under it and ripping it off.
The inner edges need to be approximately four inches away from the pipe or vent.
How to install metal roof purlins.
The correct nail must be applied 2 5 cm above the cut out and 2 5 cm from each edge.
Snap a chalk line horizontally across the roof two feet down from the top.
In all use four nails per 3 tab shingle.
Measure from roof to peak using chalk make marks where the line of each rafter intersects from the lower end of the roof right up to its peak.
The nails themselves should be in uniform rolls spaced six to eight inches apart from each other on either side and top to bottom.