Insulation, Stability and Durabilitv Properties

Fcature Inland Red Cedar

per cent mo:sture content, it will shrink only 3.8 per cent by ysfurns-31 the extremg lower end of the 3.M.3 softwood range. Its insulative "K factor" (thermal conductivity in BTUs per hour) is .72---close to the bottom of the .&.9 range in softwoods-making it one of the finest wood insulators. The wood takes nails easily but blunt-pointed fastenings are recommended to prevent a slight splitting tendency. Nailholding ability is good in relation to the wood's light weight.

A large proportion of Inland red cedar is converted to poles but the greatest percentage of production is into general purpose lumber for residential construction. Its exceptional decay resistance, high dimensiornl stability and low thermal conductivity are accountable for its immense popularity as siding,sheathing and subflooring. For paneling and interior finish, the beautiful color and grain in either knotty or clear grades as well as the wood's insulative and 6nish properties make it a favorite for decoration themes of any period.

f,notty Inltrrd red cedur riding etcined q rursot browa ie a lcvorite in mcny homee. Its texture trnd Lnot distribution, coupled with its exceptioncl resietqnce to deccy, male it idecl lor unpcinted finirher

Inland red cedar, a general purpose lumber used for nearly every building purpose, is manufactured in the Western pine region from slow-growing, long-lived trees found in eastern Washington, northern Idaho and easter Oregon with traces in northern California and western Montana.

Total sawtimber stand is estimated at approximately 4 billion board feet. Average annual production is some 2O million feet.

Nlature red cedar trees in the region are from 80 to 140 feet tall, from two to five feet in diameter and frorn 200 to 500 years old. Growing only infrequently in pure stands, they are found intermingled rvith Idaho white pine, Ponderosa pine, Douglas fir, white fir, larch and Engelmann spruce. The lumber, consequently, is generally available in mixed cars together with an assortment of the western pines and other associated species.

Inland red cedar is noted for its high resistance to decay. Completely non-resinous, .the wood is straight and uniformly grained. Sapwood is almost pure white and heartwood varies from a dark reddish-brown to light yellow. It is strongly aromatic, a characteristic of all cedars, and weighs 23 pounds per cubic foot at 12 per cent moisture content to make it one of the lightest of all commercially important softwoods. Specific gravity is .33 at 12 per cent moisture content.

The wood takes paint, stains and varnishes readily and grips them firmly. It is rated by the Forest Products Laboratory in the first of three groups in workability with hand tools and machines easily to smooth, silken surfaces. In glueability it is classed in the topmost bracket.

Dimensional stability is another outstanding characteristic of Inland red cedar. Dried from a green state down to 12-15

For miscellaneous uses, particularly exterior purposes about the home or farm, Inland red cedar is a preferred species be. cause of its durability under conditions of exposure. It is unsurpassed for outdoor lawn furniture and garden trim such as lattice work, fencing, arbors, pergolas, summer houses and beach cabanas, silo doors, feed troughs, irrigation flumes and rain gutters. Greenhouses, nursery flats and hotbeds are ideal application of red cedar.

Light weight, ease of handling and fabrication lead to its utilization for interior shelving, built-in furniture and cabinets, sash, cedar chests and other household fixtures.

Inland red cedar is manufactured and graded under current published grading rules of the Western Pine association. It is distributed throughout the United States from Western pine region mills in its Inland Empire growth region.

To Conduct College Coursee

An lJpson faculty comprising eight divisional sales manag€rs of The Upson Company of l-ockport, New York, will conduct courses in the study and application of laminated wood fibre panels as part of the National Retail Lumber Dealers Association 3Gday college training courses, the company has announced.

More. than'750 salesmen-students in eight universities witl take part in the course given by Upson representatives.

Ios Angeles Sliding Door Mcmulacturer Adds Window crnd Door Froes tc Line

Coor-Pender & Long Co., manufacturers of Sav-A-Space interior sliding door units, and Doormaster exterior slidin3 door units, and equipment, at their plant located at 1753 Blake Avenue, Los Angeles 31, announce that they have added exterior rvindow and door frames as well as inside door jambs to their line. Their telephone number is NOrmandie 3-3238.