This section is from the book "A Treatise On Architecture And Building Construction Vol4: Plumbing And Gas-Fitting, Heating And Ventilation, Painting And Decorating, Estimating And Calculating Quantities", by The Colliery Engineer Co. Also available from Amazon: A Treatise On Architecture And Building Construction.
Quantities. One pound of paint will cover from 3 1/2 to 4 square yards of wood for the first coat, and from 4 1/2 to 6 square yards for each additional coat; on brickwork, it will cover about 3 and 4 square yards, respectively. Colored paint will cover about one-third more surface than white paint.
Using prepared or ready-mixed paint, 1 gallon will cover from 250 to 300 square feet of wood surface, two coats; for covering metallic surfaces, 1 gallon will be sufficient for from 300 to 350 square feet, one coat. The weight per gallon of mixed paints varies considerably, but, on an average, may be taken at about 16 pounds.
Prepared shingle stains will cover about 200 square feet of surface per gallon, if applied with a brush; or this quantity will be sufficient for dipping about 500 shingles. Rough-sawed shingles will require about 50 per cent. more stain than smooth ones.
One pound of cold-water paint will cover from 50 to 75 square feet for first coat, on wood, according to surface condition, and about 40 square feet of brick and stone.
One gallon of liquid pigment filler, hard-oil finish, or varnish generally will cover from 350 to 450 square feet of surface for first coat, according to nature of wood and finish; and from 450 to 550 square feet for the second and subsequent coats. Ten pounds of paste wood filler will cover about 400 square feet.
For puttying, about 5 pounds will be sufficient for 100 square yards of interior and exterior work.
For sizing, about 1/2 pound of glue is used to 1 gallon of water.
For mixing paints, the following figures represent the average proportions of materials required per hundred pounds of lead:
Raw Oil. Gal.
The drier is omitted in the second and succeeding coats, unless the work is to be dried very rapidly, as it is considered to be injurious to the durability of the paint.
On outside work, boiled oil is generally used in about the proportion of 3 gallons to 2 gallons of raw oil.
Cost. The cost of applying paint, on general interior and exterior work, will average about twice the cost of the materials; while for very plain work, done in one color, the cost may be taken at about 1 1/2 times that of the materials. For stippling, the cost will be about the same as for two coats of paint. For varnishing, the cost of labor will be about 1 1/2 times the price of the varnish.
The following figures represent fair average prices, for various classes of work, and have been adopted by the Builders' Exchange of a large eastern city:
Cost per Square Yard.
1 coat paint, 1 color.............
1 coat paint, 2 colors.............
2 coat paint, 2 colors
3 coats paint, 2 colors............
2 coats paint, 3 colors............
3 coats paint, 3 colors............
1 coat shellac..........
Walls, 1 coat size, 2 coats paint.......
Walls, 1 coat size, 3 coats paint stipple.....
1 coat paste filler, 1 coat varnish....,....
1 coat paste filler, 2 coats varnish........
1 coat paste filler, 3 coats varnish........
1 coat liquid filler, 1 coat varnish.........
1 coat liquid filler, 2 coat varnish............
1 coat liquid filler, 3 coats varnish, rubbed....
Floors: filling, shellacking-, varnishing, or waxing,
Cost per Square Yard.
Tinting, 50 yards or less............
Tinting, 50 yards or more...........
Patching and washing walls........ . . . .