385. - Lathing

Lath all (walls) partitions, ceilings, and all furring, studding, under side of stairs, etc., with best quality of pine (spruce) lath, free from sap, bark or dead knots, and of full thickness. To be laid 3/8 inch apart on the ceilings and 1/4 inch or more on the walls, with four (five) nailings to the lath and joints broken every 18 inches; all to be put on horizontally. Under no circumstances must laths stop and form a long, straight vertical joint, nor any lath be put on vertically to finish out to angles or corners; neither shall any lath run through angles and behind studding from one room to another. All corners must be made solid before lathing. Should the lathers find any angles not made solid, or any furring or studding not properly secured, they are to stop and notify the carpenter to make permanent the same.

Metal Lathing. - Lath walls or partitions in front of hot-air pipes with metal lathing approved by the architect. Cover all recesses in brick walls that are to be plastered, all wood lintels and wherever woodwork joins the brick walls (if latter are not furred) with (Bostwick) or expanded metal lathing properly put up and secured.

Plastering - Back-Plastering (for frame buildings). - Back-plaster the whole of the exterior walls from sill to plate between the studs, also between the rafters of finished portion of attic, on laths nailed horizontally, 3/8 inch apart, to other laths or vertical strips put on the inside of the boarding, with one heavy coat of lime and hair mortar, well troweled and made tight against the studs, girts, plates and rafters.

One-Coat Work. - Plaster the (basement ceiling) one heavy coat of rich lime and hair mortar, well troweled and smoothed.

Three-Coat Work. - All other walls, partitions, ceilings and soffits throughout the building to be plastered three coats in the best manner.

The first or scratch coat to be made of first quality (Rockland) lump lime, clean, sharp bank (river) sand, free from loam and salt, and best quality clean, long cattle hair, mixed in the proportion of 5 1/8 barrels of sand and 1 bushels of hair to each cask or each 200 pounds of lump lime. To be thoroughly mixed by continued working and stacked in the rough for at least (7) days before putting on. The hair and sand are not to be mixed with the lime until the lime has been slaked at least six hours.

The scratch coat to be properly put on and applied with sufficient force to give a good clinch, and to be well scratched and allowed to dry before the brown coat is put on.

The second or brown coat to be mixed same as the scratch coat (except that 6 barrels of sand and but bushel of hair to 1 of lime may be used). Level and float up the brown coat and make it true at all points.

White Coat. - The third coat (except in the halls and dining room) to be mixed with lime putty, plaster of Paris and marble dust (or lime putty and King's Superfine Windsor Cement), thoroughly troweled and brushed to a hard, smooth surface.

Sand Finish. - The third coat in halls and dining room to be composed of lime putty and clean-washed (beach) sand, floated with a wooden or cork-faced float to an even surface, equal to No. 1 sandpaper.

All lathing and plastering to extend clear down to the floor; all walls to be straight and plumb and even with grounds; all angles to be maintained sharp and regular in form.

Plaster Cornices, etc. - Run all around the (parlor) a plaster stucco cornice, to extend (8) inches on the ceiling and (6) inches on the wall, and to be run in strict accordance with detail drawing. Run all beads, quirks, etc., to angles of beam soffits as indicated on drawings, and finish at each end of beams with cast plaster brackets, modeled according to the architect's full-size detail.

Put up cast plaster centrepieces in (3) rooms, for which allow the sum of ($25), the same to be expended under the direction of the architect.

The plasterer must clear out all boards, planks, horses, mortar, dirt and all loose rubbish made by him or his men, and remove from the rooms and premises, as fast as the several stories are plastered, and leave the floors broom clean. Patch up and repair the plastering after the carpenters and other mechanics in a skillful manner and leave the work perfect on completion.

Two-Coat Work. - The following is the usual form of specification for house work in New England :

All walls, ceilings, soffits and partitions throughout the (first and second stories and attic) to be plastered two coats in the very best manner.

" The first coat to be of best quality (Rockland) lime and clean, sharp sand, well mixed with 1 bushels of best long cattle hair to each cask of lime; to be thoroughly worked and stacked at least one week before using in some sheltered place, but not in the cellar of the house; all to be well troweled, straightened with a straight-edge and made perfectly true and brought well up to the grounds.

"The second or 'skim' coat to be of best (Rockland) lime putty and washed (beach) sand, troweled to a hard, smooth surface."