Proportions For Different Slate Roofing

Standard roofs are laid in uniformly spaced horizontal courses with alternating vertical joints carefully aligned.

Proportions for different slate roofing. Standard slate roofs use slates 3 16 to 1 4 thick of one uniform length and width with square tails laid to a line in a conventional shingling pattern. Depending on the geological conditions and the ratio of iron fe and sulfur s these iron sulfides may end up being different minerals with different potentials for oxidation. These houses often had slate roofs which might be ornamented with multi color slates arranged in patterns. The roof might be straight sided convex or concave and broken by dormers.

Minimum slate headlap moderate weather this table of slate overlaps and roof angles shows common sizes of roofing slate and the recommended slope for the corresponding slate size. For slate s s the most typical variety of roofing slate the average mineral proportions determined by different authors can be found at table 1. Roofs were clad too in wood shingles or even metal. For architectural reasons some slate roofs are graduated.

Many homes are not built to support that much weight and will require structural reinforcement plus certification by a structural engineer before roofing. Variations occur in color thickness surface texture graduated sizes and varying widths. If your property s roof is in the green moderate part of the uk but you know of prevailing bad winds or weather you may wish to use the other chart instead. Textural style roofs use rough textured slates with uneven butts and varied thickness.

Standard uniform slate roofs standard slate roof systems are comprised of 1 4 3 8 slate of one standard length and width and with square cut butts. Determination of fe s proportions of iron sulphides in several roofing slates. And that gives you more freedom to make the footprint something other than perfect 4 3 proportions. In such a graduated roof random widths are used throughout but thickness and length change.

Slate is one of the heaviest kinds of roofing with a weight of over 1000 pounds per square 100 square feet. Typically 1 4 3 8 thick natural slate roof weight about 1050 1200 lbs per square or 51 58 kg m 2. Decorative iron roof cresting goes hand in hand with the style. Second a simple hip roof like the one in this example often has a flat rubber or metal roofing section at the top instead of a hip so there s no ridge at all and the height is whatever you want it to be.

In other cases it is the genius of the design professional roofing contractor or building owner that deserves the credit for creating a spectacular roofscape. Natural slate is one of the most expensive roofing materials to purchase. Generally speaking a good slate should have between 10 and 50 quartz 15 60 chlorite and 20 70 mica.