Wednesday, January 21, 2009

Install Metal Roofing Guide

By Ainsley Axelsson

Let's start with one simple rule for people who want to install metal roofing. If you can't easily walk on the roof because it's too steep, call a professional. Now that the rule is out of the way, if you want to have a metal roof but the professional bids are too high, here's how to tackle it.

The proper tools are essential. These are a measuring tape, a chalk line with plenty of chalk, a good drill, a good extension ladder and a good, sturdy step ladder, pound of inch roofing nails, metal roofing screws, metal snips, and to hold the nails and screws a nail bag.

Using the tape measure the roof's height adding the desired overhang, generally two to four inches. Make numerous measurements keeping in mind the handy man's mantra "measure twice, cut once." Then measure the roof's length and height on both sides to figure out how much metal edging to add. Give these measurements to the selected roofing supply company. They will tell you how much roofing to purchase. Keep in mind that between three and six inches of unblocked air flow is needed between layers.

Although it is not necessary to remove the old roof before laying down a metal roof, it is best. Remove old shingles with a pitch fork, roofing shovel, or roofing pliers. Then lay down 30 pound tar paper which is the base for the new roof. If there is only one layer of shingles on the old roof, lay down 1"x4"x building length pine wood boards screwed onto the old shingles. Apply metal roof edging once the roof is prepared.

Start placing the metal sheets running from top to bottom. Screw them into the wood slats, using a screw every two feet on both sides of the sheet. Each sheet overlaps the last. At the edge cut the last metal sheet so it's just past the edge of the roof.

Once the sheets are applied to both sides of the roof apply the metal trim along the sides of the roof at the edge. The trim also goes on the peak, first scoring it in the middle so it can be bent over the peak.

Of course these instructions are useful only for installing the standard type of tin barn roof seen in industrial buildings, garages and the like. Methods for installing other types of metal roofs can be found on the Internet. Good luck with your project to install metal roofing. - 16732

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