If the ridge is only 15 20 long repeat step 1 at the opposite end of the ridge.
How to install tin roof cap.
Center a piece of ridge cap on the building peak.
The washer under the screw head should seal to the surface of the panel without bulging or shifting.
First we re going to position the hip cap so that i can mark the tops of the ribs with a sharpie which will tell me where to put the z trim.
To make sure you put it in the right place you need to make reference lines.
See the illustration below.
Work at a comfortable steady pace trying not to rip up or carry off too much old roofing at once.
Remove the old roofing.
Metal roofing ridge cap installation steps.
How to install ridge cap foam closures on a metal roof for a non vented ridge cap apply butyl tape sealant at to the inside of the chalk line on both sides of the ridge cap.
Although you can install corrugated metal roofing over shingles for the best foundation it is recommended that all the old roofing be removed.
Use foam insulation along the edge of the roof cap where it meets the metal roofing material.
Make a mark at the cap s lower edges both sides at one end of the ridge.
Start at one edge of the roof and lay the cap on the ridge line.
This is part 6 of a 6 part video series explaining how i installed a metal roof on my house.
In this part i cover installing vented foam closures and the rid.
In the same way that we use z trim for the installation of end wall flashing.
Locate the butyl tape so that the ridge fasteners will penetrate at the center of the butyl tape once the ridge cap is in place.
Press the cap into the foam and drive in self sealing screws along the edge of the roof cap.
Secure the screws but do not overtighten.
Next i ll remove the hip cap get our z trim cut them to length and install them.
Concealed fastener hip cap installation.
For a longer ridge move along the ridge repeating.
Install the roofing screws vertically along each rib in the panel.
Begin metal roof ridge cap installation by drawing lines the closure material goes on before the actual ridge cap.