Super-Harbord The Outdoor Plywood

The perfection of an outdoor type of plywood-proof against ply-separation frorn moisture-opens an enlarged market to lumber yards and material dealers who feature this new weather-proof material

Super-Harbord distributed in Southern California by Geo. E. Ream Company of Los Angeles, has been developed by the Harbor Plywood Corporation of Hoquiam, Washington, to meet the demand for a plywood that would be adapted to both outside and inside uses where the destructive influences of moisture, insects and fungi must be overcome.

Where modern effects either inside or outside are wanted with a minimum of expense and a maximum of speed and ease of construction, the outdoor plywood is an ideal material, lending itself to paint, stain and plastic finishes with beautiful results.

Everything that can be done with ordinary plywood can be done with the outdoor kind, with the added advantages lhat make it so perfectly adaptable to outdoor.uses. The broad, smooth surfaces, the iounded corners, the paneled effects characteristic of modern design are as easily and as quickly achieved with the outdoor plywood as with the ordinary. But the objectionable features that have heretofore prevented the use of ordinary plywood for outdoor construction have been completely overcome in the new kind. Due to the process of manufacture, which virtually welds the thin plies into a single, solid panel by means of a binder insoluble in water, the plies cannot separate or warp.

Where joints are desired without battening, the edges, which fit together tightly and evenly, afe cut clean, smoot\ and solid since there are no core voids to cause shattering and roughening when sawed. Joints may be filled and finished over in such a way that no trace of the seam appears -and can be made completely waterproof.

This permits a wide variety of interesting effects, wheth.er the material is used as a permanent part of the structure or to make forms for concrete walls. For the latter purpose the outdoor plywood has been known to be re-used as many as fifty-five times without showing any signs of ply separation, which is convincing evidence of the moisture resistant properties of the material.

In addition to its advantages in regular building construction, for outside walls of ultra-modern effect and for concrete forms; Super-Harbord finds a ready acceptance as material for many kinds of outdoor signs, for boat building, and for many kinds of outbuildings on farms and ranches.

It is particularly adapted for mountain or seaside cabins, either of the permanent or portable type. Besides its resistance to moisture, the resinoid binder which unites the plies is proof against termites and oiher insects and against molds and fungi.

Stronger than steel, pound for pound, its ultra-smooth finish, extreme durability under all outdoor and indoor conditions make it the most "usable" building material available. Architects and builders are obtaining amazing results and outstanding modern effects with Super-Harbord in all parts of the country.

A Building Prper That Hag Many Uscs

The lumber and building material dealers who handle Sisalkraft have no doubt found out that his sales are not confined tq the usual limited outlet of ordinary building paper. While probably the largest use for Sisalkraft is a sheathing paper behind stucco, brick, wood siding, or whatever type of construction used, there are dozens of other sales outlets. For example, the method of curing concrete floor slabs with a strong waterproof paper originated with the Sisalkraft Co. Since this method was developed about ten years ago, there has been a gradual change from the sand, sawdust and sprinkling method of curing until today most of the contractors in the country are using the Sisalkraft method.