In financial accounting, the balance sheet and income statement are the two most important types of financial statements (others being cash flow statement, and the statement of retained earnings).
(Tip: When you're paying this much for the material, you want a slate specialist to install it.) All told, the cost of installing a slate roof can range from about $1,500 to over $5,000 per square. On a 30-square (3,000 square-foot) roof, that's a price tag of $45,000 to $150,000 for the whole job. Now, back to the question of affordability, or more precisely, relative affordability.
1 Having a slate floor professionally installed can cost $6-$20 a square foot, depending on local rates, quality of tiles and complexity of the installation, or $600-$2,000 for 10'x10'.2  For details, see How Much Does a Slate Floor Cost. Installation of a basic travertine tile floor starts between $6 and $13 a square foot, or $2,200-$5,100 for a 10'x10'room. 2  Installation of higher-quality travertine (can be $8.50-$22.75 a square foot, or $850-$2,275 for 10x10-feet. 3  For details, see How Much Does a Travertine Floor Cost.