601750 2274 metal roofing installed over shingles with valleys. additional details are found below
EXACTLY as it
will be installed. This would require a layout of the roof in all dimensions. Flashings such as plumbing
vents, valleys and chimney flashings should be detailed and EXACT.
Divide the roof into sections. Use the aerial view of the roof as a guide to picking out your sections;
note the shapes of the different sections of roof. You will have triangles, parallelograms, rectangles,
squares and other odd sections. You can use basic geometry to determine each of these calculations, so
figure out which geometric figures best make up each section.
This will allow you to order the materials with minimal waste, and minimum cuts made on the job for
the modifications. Pick the order in which you will install the metal roofing panels, and order the job
with the panels UNLOADED in the order you will use them, so the LOADED order (on the truck) will
be the opposite.
Ready to go to work ? This will have to be presented in a broad brush approach , since every job is
different. The BASIC steps are :
1. Clean the roof of debris.
2. WE cut back the asphalt shingles one foot around the perimeter of the roof. This allows room
that will we need in the future .
3. Find the rafters supporting the roof from the inside. These will be on 16 inch centers once you
locate the starting point…normally at the eave.
4. Mechanically attach the 1×4 furring strips to the existing rafters. We use stainless steel screws.
If a thermal blanket is to be used , this is nailed into place before the furring strips.see this video
on youtube http://www.youtube.com/watch?v=giWEK-564jA
5. Mechanically attach the 1×4 furring strips around each penetration and any chimneys. These
will ‘box’ in the penetrations with the furring strips for metal panel attachment.
6. Depending upon the type of metal roofing to be installed, you either install the first eave trim (if
you are doing a standing seam metal roof) or align your first metal roofing panel SQUARE to
the front fascia board. This is IMPORTANT as this sets up the rib appearance from the street.
The eave/fascia flashing is installed at this point.
7. Attach the metal roofing panels per the manufacturer’s specifications
8. We ascertain the general wind direction for the area and install the panels so that the lap of the
panels with be downwind. This is crucial in high wind areas.
9. Care should be used when cutting out the metal panels for penetrations and should be as tight as
possible around the penetrations while maintaining the ribs square to the front fascia.
10. As progress is made, we install the boots as we go ..this saves times later. Valleys are installed
prior to the metal roofing panels as here http://www.youtube.com/watch?v=UmzzKi-nIrg
11. Be careful to follow those directions for the valleys.
12. All panels installed, we install any additional trim and flashing. The ridge vent is installed after
both sides of the roof area are completed.
13. Chimney flashing is installed per the other videos. http://www.youtube.com/watch?v=tfbpH3jvZU
14. Clean up and call your beer drinking buddies to see your brand new ‘forever’ roof.
It should be noted that some states allow the homeowner up to 33% of the cost of a metal roof to be
deducted as TAX CREDITS in you tax returns.