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Adhesives, Paints, and Varnishes: Stucco

Specifications for Painting Brick, Stucco, and Concrete. - Brickwork.- If any mortar has become loose and washed out between the bricks, all such damaged places shall be repointed with mortar or Portland cement, before any paint is applied. After priming, correct small defects in surface with putty. New brickwork shall not be primed except when thoroughly dry. At least two or three days of dry, clear weather shall precede painting. No painting shall be done in cold weather. Stucco or Concrete Work. - Stucco or concrete work shall be allowed to dry and set at least two months before paint is applied. The longer concrete work is allowed to dry out before painting, the better, even up to one year. If a longer time is available, specify it instead of the time given above.

Formulas. The paint for all brick, stucco, or concrete shall be mixed according to the following formulas: Priming Coat.-One hundred pounds of white lead; 9 gallons of pure boiled linseed oil (or 9 gallons of pure raw linseed oil and 1½ pints of turpentine dryer); 1 gallon of turpentine. Body Coat. One hundred pounds of pure white lead; 4 gallons of pure linseed oil, one third boiled, two thirds raw (or 4 gallons of pure raw linseed oil and 1 pint of turpentine dryer).

Finishing Coat. One hundred pounds of pure white lead; 31 gallons of pure linseed oil, one third boiled, two thirds raw (or 3½ gallons of pure raw linseed oil and 1 pint of turpentine dryer); 1 pint of turpentine. Strictly kettle-boiled linseed oil should be used as specified whenever possible, especially on stucco and concrete, because it is less liable than raw oil to degenerate under the peculiar influence of lime, cement, etc. If strictly kettle-boiled oil is not available, use the alternative specifications for raw oil and a dryer.

Specifications for Painting Steel and Ironwork. - Before erection. - Before it leaves the shops, all steel and ironwork shall be thoroughly cleaned of all mill scale, dirt, rust, and oil, and receive one coat of red lead paint mixed according to the formula given below. Surfaces which will be inaccessible after structure is erected shall receive two coats of this paint before erection.

Formula. Pure dry red lead, 30 to 33 pounds; pure raw linseed oil, 1 gallon.

These ingredients shall be thoroughly mixed no longer than twentyfour hours before being used. - After Erection. - All structural ironwork shall be cleaned after erection and all abrasions in first coat of paint brushed clean with a stiff wire brush and repainted. All surfaces shall then receive one additional coat of red lead paint prepared according to above formula.

All pipes, including automatic sprinklers, steam and hot-water radiators, conducting pipes, and interiorly exposed structural metal work shall receive two coats as above. Fire escapes, smokestacks, gutters, down spouts, and all other interior metal work shall receive three coats as above with 1 pound of pure lampblack, ground in oil, added to every 28 pounds of red lead used in the third coat.

Subsequent coats on exposed metal work shall be of strictly pure white lead and linseed oil, tinted according to the color scheme employed in the building.

Paint shall not be applied until previously applied paint is thoroughly dry. No painting shall be done in wet or freezing weather.

Specifications for Painting Metal Roofs, Cornices, etc. - New Work.- All new metal, tin, galvanized iron, iron, or steel, used for roofing, cornices, valleys, gutters, down spouts, iron railings, gratings, etc., shall be painted according to the following specifications:

Before Painting.-All surfaces shall be carefully cleaned by scrubbing with sand soap and water, and thoroughly dried, before paint is applied. Only when this is done will the paint adhere properly to the metal. This is very important.

Formula. - Pure dry red lead, 30 pounds; pure boiled linseed oil, gallon; pure raw linseed oil, gallon; pure lampblack ground in oil, 4 ounces.

Mixing. - The materials must be thoroughly mixed before application.

The mixture shall be of uniform consistency and stirred frequently while in use.

Application.-All surfaces shall receive two uniform coats, as above. When necessary to follow color scheme, finishing coats of pure white lead and linseed oil, tinted to suit, shall be applied over these coats. Each coat shall dry thoroughly before the next is applied. Paint on under side of roofing shall dry hard before roofing is laid.

Old Work. - Metal surfaces not new shall be thoroughly cleaned with wire brush, removing all loose paint and particles, and then painted as above.

Specifications for Painting with Zinc White.-Outside. - Any of the following combinations may be used at discretion: