Document aDJwK45k3eqm90kORZOgRX149

Pertinent Factors in Interior Painting and How 1 White Lead Meets Their Requirements NTERIOR painting is a question of I great importance in the decoration and protection of public buildings. It is essential that those who purchase and specify painting for such struc tures study their painting problems from a careful and analytical ap proach. Painting is assumed, all too often, to be just something that oc curs from time to time. As a result, painting expenditures are often much greater than would he necessary had careful attention been given. The ac companying table indicates briefly the functions of interior painting, the necessary qualities of a suitable paint and how pure w hite lead and oil meets these requirements. MIXING INSTRUCTIONS FOR INTERIOR PAINTING NEW WORK REPAINTING OR unpainted inside wood, take Fabout one-third of the white lead ! paste and mix it with an equal volume *UAD MIXING of linseed oil and two-thirds as much turpentine to make the priming coat. OR If raw linseed oil is used, add Vi P>nl Re d u c in g o il liquid drier for each gallon of paint made. For unpainted plaster and wall hoard, take about one-third of the 54 w h it e l e a d white lead paste and mix it with a third San Anionio High School. Vuriou \ interior paints have been tried /or several years in San Antonio schools with little success. As a result white lend is now largely relied upon again as much lead mixing or reduc ing oil to make the priming coat. In both cases, follow with two coats described at left. Coverage per gallon: Priming Coat: on wood--700 sq. ft. on plaster--800 sq. ft. u s e ABOVE FORMULA FOR BOTH COATS COVERAGE 800 SQ. FT. flOj LI4P5559 PERTINENT FACTORS IN INTERIOR PAINTING PURPOSE QUALITIES NECESSARY IN HOW WHITE LEAD MEETS THESE PAINT USED REQUIREMENTS i____ DECORATION To improve appearance and provide cheerful interior? conducive to better work and study. The paint should be obtainable in an unlimited variety of shades and colors with assurance that these shades and colors may be dupli cated at any time. | White lead may be easily tinted to an un! limited variety of shades and colors. More over. white lead is tinted to the amount needed for each color only. Consequently, it is not necessary to stock a large supply of standard colors of paint, much of which will li_n_o_t__b_e_u_s_e__d_, _w_i_th__r_e_s_u_l_ta__n_t _w_aste. SANITATION The paint must be truly wash- To keep walls, ceilings. ` able, not merely once, but repeated- and trim free from accumu- j *> In order to promote cleanliness, lations of dirt and other | accumulations of dirt, grease, finger i marks, etc., must be easilv washed White lead is really washable. Numerous tests have shown how ink. pencil, crayon, dirt, and other surface disfigurations are easily removed. Basically responsible for this quality is the fact that white lead is not j off without injury or erosion of the affected by moisture, allowing repeated paint film. washing without injury to the film. More over it is not porous and dirt cannot become imbedded in the film. LIGHT REFLECTION I The paint must be obtainable To provide better disper j in a flat finish and must flow on sion of light, saving electric- | smoothly and evenly without humps itv and reducing eye-strain. or ridges which will interfere with uniform light dispersion. A smooth flat finish is easily obtainable with white lead, either by the use of lead mixing or reducing oil. or by adjustment of the oil and turpentine proportions. White lead always flows smoothly and freely from the brush, eliminating surface irregularities. PROTECTION To protect the surface from interior moisture and other conditions. It must form a smooth but elas tic paint film which will anchor it self solidly to the painted surface, wearing from the outside in so as to maintain always an unbroken film over the surface. Like lead itself, white lead paint is flexi ble. absorbing surface movements without cracking the film. It has a unique affinity for oils and is amazingly tough, bonding itself tightly to the surface. Moreover, white lead wears from the outside in. maintaining con tinuous surface protection. ECONOMY For maximum economy, maintenance cost as well as initial cost must be low. The foregoing functions must be obtainable for the longest time without repainting. The material used should have excellent durability and continued good appearance, brought about by washing, to put off repainting as long as possible. The original cost per sq. ft. applied* should be low. Of tremendous importance too, the surface should always be in good condition for repainting to avoid costly surface preparation at the time of future repainting. Years of experience have proved the unsurpasssd durability of white lead. This durability, plus the fact that the original freshness of the painted surface can be main tained by washing, increases the length of time that may pass before repainting is necessary. Moreover, when repainting final ly does become necessary, white lead sur faces are always in good condition and do not need expensive surface preparation. A further advantage is that the high qualify of white lead can be duplicated at any time in the future. * To analyte interior painting costs, the following formula should be used: r _Ce CM , Cx ~s7+sid where C\ = final cost per sq. ft. of painting. Cg = cost per gallon of paint. Cld = cost of a labor day, 5a = sq- ft. covered per gallon Sid = sq. ft. covered by one painter in one labor dav. For white lead, these figures will be: Ng is 800. Nld 15001600 and Cg in the neighborhood of $2.50t. The final figure should be divided by the years of life you expect from the paint. With three coats of pure white lead and oil. ten to twenty years of life may be assumed. By checking white lead costs against other paints, the reason is obvious why pure white lead and oil is used so widely in painting the interiors of schools, hospitals, office build ings, apartments, churches, factories and other buildings. fElict price dependent OB lout Bod Market cosditiooi o( >11 inpredicnl,. [11] LIA?556C