Notl. Assn. Home Builders Stort Reseqrch Houses'

Association of llome Builders, reports that construction was to start in August on two research houses aimed -at

,testing ways to provide Americans with better homeS for less money-one in South Bend, Ind., and the ofher at , Knoxville, Tenn. He explained that the research proj.ects ; will demonstrate what can be done to create attractive, low- i' Washington-Nels G. Severin, president of the National Its exterior will be of natural redwood, with a light blue roof, accented by darker blue panels under the windows and a beige trim. The new foamed plastic which will be used between the redwood and the interior finish will provide the insulation as well as give strength to the structure. The plastic is incredibly light but amazingly strong, according to its developers. cost homes through the use of new building materials and equipment or bold adaptations of known materials.

The South Bend house will be built entirelv under the auspicies of the Research Institute of the National Associa- ji, tion of Home Builders (NAHB). Joining forces to co-spon- sor the Knoxville house are NAHB's Research Institute and the Masonite Corporation, Chicago.

Innovations in both projects will accent what builders can incorporate into h&nei in the next few years. rather than point to what may be ahead in the "space age" house of the distant future.

Concrete for the South Bend house was to be poured

August 4 or 5. The house will be a one-story, six-room building of non-conventional sandwich penel structur-e.- It will use a foamed plastic core-known as Dylite expandable

'polystyrene-between its exterior and interior finishes.

This fba.med.plastic. type of .panel has never.before been used in building a house. Th! panels were developed by

Koppers Co., Pittsburgh. Eventually,it is expected that this pBsearch house can be reproduced in the South Bend area for about $13,500. Land values might vary the cost else- where.

The Knoxville house was to get under way with concrete pouring on August 11 or 12. Its main feature will be the use of hardboard as the basic structural material. It will demonstrate what can be done with this material as , the result of research and development by manufacturers and builders, to provide a low-cost, yet handsome and pleasant place in which to live.

Severin announced that the Knoxville home will be the first of an ambitious series of research houses to be built by the NAHB Research Institute and selected .manufacturers over the next four to five years to test the newesf and best uses of basic building materials. ' The location of the other homes in the special series has ' not been announced, but Severin said they will reveal new developments using such materials as aluminum, concrete and concrete masonry, gypsum, plastics, plywood, steel, structural clay products, and wood.

The 1958 Knoxville house will be a one-story, six-room structure 36 feet eight inches long by 28 feet eight inches wide with 1,050 square feet of living space. Its hardboard exterior will be coated with a new, long-wearing paint in a color yet to be chosen. The durable paint will reduce materiallv the cost of maintenance.

The hirdboard house will use new, plastic pipe plumbing and an entirely new wiring system called the "wiring tree," 'which will cut labor costs in building. The "wiring tree" will serve major electrical appliances.

New, tbo, in the Knoxville house will be use of a very thin hardwood flooring for some of the rooms. The flooring is African oak, only three-sixteenths of an inch in thickness. Yet it is-entirely stable and researchers find it beautiful as well as economical.

A thin, long-wearing vinyl floor covering which is also new, will be used in the kitchen. The house will have, ' too, a new electrical resistance hot air heating system, : designed so that air conditioning can be added simply and inexpensively should the home buyer wish to add the equrpment.

The South Bend house, nearly square-shaped, will be 36 feet six inches bv 32 feet six inches and will cover 1,200 square feet.

Among the many features of the South Bend house will be use of a new lightweight foamed concrete which will make the floors warmer in winter. Coupled with this will be a new, heat-duct distribution system under the floors. The design is such that here, too, air conditioning can be added easily at any future time.

The house will have a carport-actually a "garport" Since it is a cross between a carport and a garage. There will be an "expansion" area adjacent to the house, providing a logical and economical place to enclose for an extra room at some later date if the homeowner desires.

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Cost-sqving Proved Possible With Hordboord Pqnels in Reseorch lnstitute House

Among several new concepts incorporated in NAHB's Research Institute House at Kensington, Md., are the exterior walls and the interior non-load-bearing walls. Both features have excited the interest of builders because they offer cost-saving opportunities without the sacrifice of either quality materials or workmanship.

The exterior wall panels are fabricated with a Zx4 base plate and three 2x4 ituds with /t" Tempered Presdwood having pre-formed vertical ribs at intervals of four inches. Here,-the important building feature is that a single panel performs the functions of sheathing, siding and battens, at the same time providing ample strength for racking resistance. In additi,on, sufficient strength lies in the hardboard to prevent uplift between the panel and sill plate.

The exterior walls were erected, in 211 hours with three carpenters and two laborers. Contributing to the speed of erection are the experimental panels' shiplap edges, which form a weather-tight joint, plus the absence of sheathing and building paper. Racking tests of the Masonite ribbed panels indicate these walls are several times more rigid than ordinary construction.

The integral ribs cast an interesting shadow pattern and present a new texture in exterior sidings.

Masonite Corporation also furnished the interior non- load-bearlng partltlons, 'I hese wlll be mart<eted under tne trade name of Duowall. These panels, 7 wide and 2" thick, are of hollow core stressed skin construction with vertical chases for wiring. The panels are faced with Masonite %" Tempered Duolux. They are & high and are used in conjunction with 7' posts of various types. They are set between a top and bottom runner of. 3/4n'x7' wood or plywood.

A preliminary report by NAHB's Research fnstitute comments on these component panels:

"A significant aspect of this interior wall system is the insertion of a patented metal. spline slotted at 1" intervals to receive accessories of various types to produce a true 'work wall.'This spline is inserted between the panels in a slot, giving a rfn' wide joint that is deeply recessed."

Usid in conjunction with the panels are a system of fixtures known as "Adjust-a-bilt" developed by the L. A. Darling Company of Bronson, Mich.

Other wall features of the Research House include the gable ends which are covered with a self-ventilating product, an experimental version of Masonite Shadowvent Siding; and a supplementary means of attic ventilation, the use of perforated panels of ribbed siding, the same type used in the exterior walls

Ribbrd rtolonit pqnclt wilh pffdolion! ora rhown o! thay qppeor qr rofilr, nqlled to look-ouls !pqccd 2'o.c. This pcrfqoled qrcq on rldcr owoy from goble endt, @uplad with tupcr-Yenicd Shodowvqnl siding in the gcble endr, ellminofor n@d for convcnlionol otlic Ycnting

This combination of ventilated lap siding in the gable ends and ventilated soffits eliminates the need for old-style, unsightly louvers.

An innovation, too, was the exposure of the screen side of y4" Tempered Presdwood as a fill-in panel below the window sills, permitting flexibility in the window heights without interfering with modular construction. The screen side is fully as durable and weather-resistant as the smooth side, Masonite officials point out, and its canvas-like texture provides an interesting contrast with the ribbed siding.

In the kitchen and garage of the Research House appears another new product, known as the Masonite Panelok system, with "Adjust-a-bilt" accessories. Similar to the Duowall system, Panelok is designed to be used over existing walls. Shelves, cabinets, planters, and racks of various sorts may be fitted on these walls in the same manner as with the Duowall system.

Lumber Mqnufqcturers Believe Output, Sqles Will Orbit in 1959

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