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Guides on installing architectural shingles can be found from many different resources. Some online resources for installing architectural shingles include Youtube and Owenscorning.
20 year = 4 to a square. 30 year = 3 to a square. Most 20 year are also 3 bundles per square
There are too many variables to answer the question. weight will vary slightly by manufacturer, style, and durability. 3 tab shingles come in 20, 25, and 30 year warranty weights. Obviously, the longer the warranty, the heavier (thicker) the shingle. Architectural (shadowbox) shingles which come with 25, 30, 40 year warranties as well as lifetime warranty also all weigh based on thickness.
3 tab will have a 20 year rating vs 30 year for the shadowline products. Beyond that it's a personal preference based on looks.
13 square. 1 square of shingles is 100sq feet.
Generally architectural shingles are heavier gauge asphalt and,in many cases, have a unique look to them. It is definitely critical to determine if the shingles will stand up in your climate. The roofs may last for more than 30 years; their warranties are not generally better than ordinary shingles. Shingle manufactures use a decreasing scale for each year of use.
Architectural Digest comes out every month. Therefore there are 12 Issues a year. There is really not much else to say to this question. But the answer is that it comes out monthly.
Architectural dimension shingles will vary in price depending on style, thickness, durability, and production costs. Cheaper dimensional shingles currently (2008) run anywhere from $50/square to $175/square.
33 square feet
Roofing shingles. Standard grade 3 per square. Architectural 4 per square.
typically a square is three bundles (about 26 shingles per) but in some types of architectural shingles there are four bundles per square to make them easier to handle.
3 per square, standard grade, 4 per square architectural.