Do one in the center and one on each side. No matter what the age of a building there is one simple universal truth; water is a buildings worst enemy. If you only have one layer of asphalt shingles and the deck seems to be in good shape, then you can leave the old shingles in place, and install the new metal roof overtop, but only if you are planning to install a metal shingles roof. Steel roofs are long-lasting and withstand inclement weather. Standing seam consists of sheet metal roofing panels joined side by side and attached to the roofing deck with concealed fasteners. Attach the flashing panel in place at the bottom. I'm going to install the rest of the pop rivets so that we can finish this as a true concealed fastener installation.
Get your measurements from the eave to the middle of the pole, and cut your bottom sheet to this length. Ask your supplier how to use them. Now we have the ridge end finished, we have the eave end boxed off, so we can install it on the project. I also was not certain that turning up the panels without cutting ribs would result in distortion of the male and female panel connections causing difficulty in their installation. All of the pop rivets have been installed, so the sidewall trim is now ready to go. Some existing drip edges could potentially be exposed after the new drip edge is installed, depending on the width of both, so it could be an eye sore. If the roof is out of square, a compromise will have to be made, either in panels over-hanging different amounts at the eve, or the gable flashing not being parallel to the visual lines on the panel.
Make sure that the anchors are absolutely secure before you put any weight on them. Learning Objective: Reading this guide will not make you an expert installer, but it will help you better understand the basic roofing principles and fundamental concepts required for a successful metal roofing project. Put the underlayment membrane down to form the base. In my case, I had screws penetrating the underside of the finished eve for one of the four eve sections. As you're drilling the hole for your pop rivet, make sure that when you don't punch a hole in your panel. With this, you'll have to adjust the width or the length of the Z trim accordingly.
Start a second row with a half shingle, so the seams do not align, and work across and up the roof installing tiles, with ends and seams overlapped. In order to do that, we're going to use the end wall flashing as a guide. Note that I also installed the ridge cap in such a way as to cover the gable flashings where they meet at the ridge. Once a panel is installed, the screws are hidden under subsequent panels. You can find these at a home goods store and they are reasonably cheap. Find out how wide each piece of metal is, then divide the width of the roof by that number. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness.
It honestly depends on your preferences. Installing the Gable Flashing and Starting with the first panel: The gable flashing gets installed along the gable rake in the similar way to starter flashing. The last thing to do on this particular detail where we have exposed fastener panel and exposed fastener on the trim is to put a couple of screws into the gable trims. Although this step was easier than the gable flashing, I found it challenging to align the flashing and not have it drift as I attached the stitch screws. Overlap panels horizontally by one ridge and one valley and vertically by at least 6 inches.
You can see my pencil marks where I've had it up on the roof, and I've made the measures to fit in between the panel and the gable trim. Install your drip edge against the fascia board. Be very careful while you are on the roof, and only do this in dry conditions. I'm going to mark the reverse side of it for the sidewall and mark where it finishes at the end of the panel for bending down. The flashing shall be a minimum of 4 inches 102 mm high and 4 inches 102 mm wide. Standing seam metal roof installation video: Understanding Roofing Hazards: Before we can talk about the steps to install a metal roof, we have to touch upon critically important, yet often overlooked safety considerations.
Make sure there is a 0. I have six feet from the panels to the end of the roof, the snow slides down the panels and builds on the roof. Also, remember that both temperature and humidity can cause roofing materials shingles, wood sheathing, flashing to expand and contract with seasonal changes. Also give consideration to the possibility that leaving the shingles in place may create a moisture problem——ask your roofing contractor for advice. Make sure you get the tab on the underside of the right shingle, hooked into the edge of the shingle you just installed. I was stumped at this early step since very often almost always with non-metal roof systems the eve flashing sits directly on the deck with the moisture barrier on top of the flashing as a safe guard for water penetration from the ridge or from the field. I'm going to mark the Z trim, cut it and install it so that we can install the end wall trim using stitch screws.
I'm going to take the end wall flashing, put it in place, and use a pencil or a sharpie to mark the tops of the ribs and the gable trim, just so I know where to put those Z's. To determine the quantity that you need, measure the length of the valley, adding an extra six inches just to be on the safe side. You can blow it away or brush it away with your hand or a broom, just make sure those shavings don't sit on the metal and rust. Val ley flashing protects the valleys where two roof planes meet. Common pitched roof systems rely on the force of gravity and the surface friction of the roofing materials to direct the flow of water downward and outward. Our first panel gets attached over the gable trim. I'm going to start making those lines and tracing out my bend and cuts.
The exact process for this will differ depending on the type of harness you have. With the trim marked, we'll take it to the table, make our cuts and our bends, then we'll install it. The first thing that to do is figure out where to put the Z trim on the panel. This detail continues to be debated on roofing blogs, some contending that moisture can wick from the eve into the sheathing indicating that the eve flashing should lay atop the moisture barrier. The final thing to do is install the end wall trim.
I'm going to place the Z trim so that the leading edge is just about a quarter or a half an inch behind the marks that I made. Start with a row of tiles at the bottom of one edge of the roof. Also, new flashing can be exceptionally shiny, especially in contrast to the earthy brick walls of many homes. Marking the Trim We're going to install this step flashing here against the sidewall, and the first thing we're going to do is let it run. Ice and Water shield installed at the eaves, followed by a roofing underlayment, with a 6 inch overlap Ice and water installed at the eave Installing Standing Seam Metal Panels: There are many different types of metal roofing systems, but standing seam is becoming the metal roofing system of choice when it comes commercial, industrial and many residential metal roofing projects. Applying Tape Sealant Before we install it, I want to point out that I've applied the tape seal to the reverse side of the nailing flange.