. Cyclopedia of architecture, carpentry, and building : a general reference work .... b Fig. 200. 247 168 SHEET METAL AVORK are not soiled with paint, which would interfere with soldering. Be-fore laying tlie sheets the roof boards are sometimes covered Avith anoil or rosin-sized paoer to prevent the moisture or fumes from belowfrom rusting the tin on the underside. As before mentioned, the samemethod used for laying tin roofing w^ould be applicable for layingcopper roofing, with the exception tliat the copper sheets wouldhave to be tinned about 1? inches around the edges of the sheetsafter th
. Cyclopedia of architecture, carpentry, and building : a general reference work .... b Fig. 200. 247 168 SHEET METAL AVORK are not soiled with paint, which would interfere with soldering. Be-fore laying tlie sheets the roof boards are sometimes covered Avith anoil or rosin-sized paoer to prevent the moisture or fumes from belowfrom rusting the tin on the underside. As before mentioned, the samemethod used for laying tin roofing w^ould be applicable for layingcopper roofing, with the exception tliat the copper sheets wouldhave to be tinned about 1? inches around the edges of the sheetsafter they are notched, and before tliey are edged. In Fig. 201 is shown how a tin roof is started and the sheets laidwhen a gutter is used at the eaves with a fire wall at the side. A repre-. Fig. 201. sents a galvanized iron gutter with a portion of it lapping on the roof,with a lock at C. In hanging the gutter it is flashed against the firewall at J; after which the base flashing D D is put in position, flashingout on tlie roof at E, with a lock at F. Wliere the base flashing Emiters witli the flange of the gutter B it is joined as shown at b, allowingthe flange E of the base flashing as shown by the dotted line a. As thewater discharges at G, the sheets are laid in the direction ot the arrowH, placing the nails at least G inches apart, always starting to nail atthe butt e e, etc. Care should be taken when nailing that the nail headsare well covered by the edges, as shown in W, by a. Over the baseflashing D D J the cap flashing L is placed, allowing it to go into thewall as at O. 248 SHEET INIETAL WORK 169 When putting in base flashings there are two methods Fig. 202 is shown a side flashing between the roof and parapet shows the flashing turning out o
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