US1842749A - Roof joining - Google Patents

Description

Jan. 26, 1.932. A. DAGG 1,842,749

ROOF JOINING Filed Nov. 21, 1930 2 Sheets-Sheet l A. DAGG ROOF JOINING Jan. 26, 1932.

Filed Npv. 21. 1930 2 Sheets5hec 2 the roof and t Patented Jain 26, 1932 ADAM DAGG, OF HOLLY WOOD, ILLINOIS ROOF JOINING Application filed November 21,1930. Serial No. 497,144.

This invention relates to improvements in means for forming a weather-proof joint be tween a roof and a wall structure which extends upwardly beyond the roof, usually be ing a projection of the outer wall of a building or the like. This invention is in the nature of an improvement on my prior invention disclosed in my copending application, Serial No. 3,497 for Roof joining.

Themain objects of the rcsent invention are to provide an improved roof joining structure which may be manufactured as a complete unitary article in a factory, shipped to the job where it is to be installed and there installed by workmen during construction of the building ;.to provide an improved roof joining unit which may be more easily installed than has been possibleunder the conventional practice; to provide a roof joining structure which will be substantially as durable as the building structure itself and which will not be apt to crack or otherwise permit leakage to occur at the joint between he building wall.

Other objects and advantages will be understood by reference to the following specification and accompanying drawings (2 sheets) in which I have illustrated several forms of roof joining units embodying the principles of my present invention.

in the drawings:

Fig. 1 is a sectional view of my improved roof joining structure as applied toa brick wall and an ordinary flat roof;

Fig. 2 is a section on the line 2-2 of Fig. 1;

Fig. 3 is an end elevation of a unit of my improved roof joining before the same is installed and as it appears when leaving the factory;

Fig, 4 is an end elevation similar to Fig. 3, but showing a modified structure;

5 is a section on a vertical plane through overlapping'end portions of adjacent units;

Fig. 6 is a perspective of my improved unit;

Fig. 7 is a perspective of one end of my improved unit looking at the inside of the unit:

8 is an end elevation similar to Fig. 5 but showing a modified arrangement; a

Fig. 9 is a perspective of a modified form of roof joining, and

10 is a section illustrating the application of the roof joining structure illustrated in Fig. 9.

in my previous ap lication, I disclosed a roof oining unit inwhich a plurality of plies of flexible, impervious material were anchored or embedded in an elongated block of mastic. The disclosure in the said application is similar to that of Figs i) and 10 herein. In certain building structures, it is desirable to provide a copper or like metal protection for the wall flashing and because of certain well established trade practices and prejudices, architects often insistupon theprovision of a roof joining arrangement in which there is a base flashing or a counterflashing, or both, of copper or other suitable metal. In order to meet the demand for such a structure, I provide an elongatedwall block consisting of top and bottom members 10 and 11, respectively, of suitable material, for instance, wood, these blocks being encased in copper sheath 12 which at the front of the block depends below the bottom of the block and constitutes a counterfiashing substantially shown at 13.

The flashing proper is in the form of flexible impervious strips of material 14; and 15 which have their upper marginal portions interposed between the top and bottom block members 10 and 11. These block members may be secured together by nailing at longitudinally spaced points as indicated at 16. The flashing strips Hand 15 extend clownwardly-across the face of the wall 17 and in wardly as indicated at 18 over a marginal portion of theroof 19. The roof covering strips or sheets 20 are disposed beneath the flashing portions 18 and extend upwardly across the face of the wall 17 as indicated at 21 beneath the said flashing. The exposed parts are all usually coated with asphaltum or other suitable roofing material to seal the parts against leakage.

The wall block, consisting of the top and bottom members 10 and 11 and the metal sheathing 12 is designed to be positioned in the wall structure in lieu of a course of bricks, as clearly indicated, this being done by the mason when the wall is built. Hence, the difficult work of inserting thin flexible sheets of flashing into a groove or raggle provided in the wall is eliminated.

In order to facilitate handling of the unit during and prior to installation in the wall, the flashing strips 14 and 15 are rolled or folded into a bundled condition adjacent the front of the block portion and beneath the counterflashing strip 13 which then serves to protect the flashing .during handling and shipping of the unit and to maintain the flashing in the said bundled condition. This condition is illustrated in broken lines in Fig. 10.

The wall block is provided with recessed ends as indicated at 20 and 21 for the purpose of making lapped joints between the ends of adjacent units substantially as described in my said prior application. All surfaces of the'wood block members 10 and 11 are preferably covered by copper or like sheathing so as to protect the fillers, the sheathing being suitably arranged to provide a substantially impervious cover.

After the unit is installed by the mason,

the roofer pulls out the counter-flashing member 13 to release the bundled flashing strips 14 and 15 which are then unrolled or spread out to form the joint substantially as shown and described. Thereupon the counterflashing 13 is bent down and straightened. out to thecondition shown in Fig. 9.

In Figs. 1 to 8 inclusive, I have illustrated a still further improvement. The form shown in Fig. 3 consists of a sheathing 22 of copper, aluminum or other suitable metal. The sheathing 22 is bent to form top and bot tom body members 23 and 24 respectively which are integrally united at their inner edge as shown at 25. and between which marginal portions of suitable flexible impervious flashing membranes 26 are interposed. For anchoring the flashing membranes between the top and bottom members 23, one or more ofl'sets or ribs 27 may be provided intermediate the width of the body. This rib-like ofiset helps to clamp the flashing membranes between the top and bottom metal members and also constitutes a baflle for preventing seepage of water inwardly across the top member 23 to the inside edge thereof.

The outer edge of the bottom member 24c is provided with an integral extension 28 which constitutes a base flashing, this member depending at right angles or at any other desired angle from the bottom member 24. The base flashing28 is of such width that it will cover the inside of the wall between the body part of the unit and the roof and also such that a marginal portion as indicated at 29 in Fig. 1 will extend inwardly across the top of the roof.

The top member 23 of the body is also provided with an extension 30 which CO1]- stitutes a counterflashing for protecting the flashing membranes 26.

lVhen this type of unit is constructed, the free portions of the flexible flashing strips are rolled or folded into bundled condition substantially as shown in Fig. 3 between the base flashing member 28 and the counterflashing member 30, the latter bein bulged outwardly to form a casing for retaining and protecting the flashing while in bundled c011- dition. Because of the material width of the base flashing 28, it may conveniently be bent upwardly and outwardly as indicated in Fig. 3 to facilitate handling of the unit.

When a unit such as that illustrated in Fig. 3 is installed, it is done by the mason when the wall is built. When the proper height is reached, the mason spreads a thin layer of mortar on the top of the wall structure and then positions the body portion of my improved unit on this thin layer of mortar. More mortar is then spread on top of the flashing unit body and the next course of brick laid over the flashing unit. It will be seen that as soon as the mortar between the bricks, in which the flashing unit body is embedded, sets, the unit will be effectively anchored in place, especially by reason of the offset portion 27 in the body which helps to form an interlocking key between the flashing unit body and the wall structure.

lVhen the masons work is completed, the roofer applies a suitable roofing, herein indicated as comprising two plies of waterproof sheet material designated 81, marginal portions of these plies being bent upwardly along the face of the Wall and overlying the base flashing 28 of the roof joining unit previously pulled down and forced to lie flat against the wall and against the roof as indicated in Fig. 1. The counterflashing member 30 is then pulled out to release the bundled flashing membranes 26, and these membrances are then spread out into proper position, substantially as shown in Fig. 1, in which they overlie the marginal portion of the roofing plies 31. If desired, the flashing membranes may be interleaved with the plies of roofing, or otherwise arranged to suit individual pref erences. he counterflashing 30 may thereupon be bent downwardly and caused to lie flat over the flexible membranes as shown in Fig. 1. It is, of course, to be understood that the flashing membranes and the roofing plies are desirably'embedded in any suitable form of roofing material, such as asphalt, so as to provide a weatherproof roof covering and so as to unite the roofing plies and flashing membrane more or less in accordance with estab lished practice. If the counterflashing be left clean, a neat and distinctive appearance will result by reason of the relatively bright metal counterflashing which will extend around the wall at a uniform distance above the roof.

As shown in Fig. 7, one end of the unit is provided with an extension of the bottom member and base flashing as indicated at 32, while the counterflashing is cut away as indicated. at 33 to facilitate the formation of a lapped joint. The counterflashing is cut away as indicated at 33 particularly for the purpose of permitting the flexible membrane flashing of one unit to contact directly with the membrane flashing of the adjacent unit as will be understood by an inspection and comparison of Figs. 6 and 7. By inspection of Fig. 7, it will be seen that the bottom member and base flashing 28 are cut away so as to leave a projecting end portion of the flexible membrane flashing as indicated at 34. The top member 23 and counterflashing 30 are extend ed endwise beyond the membrane flashing as also shown in Fig. 7. It will be understood that Fig. 7 is an illustration looking in the inside of the remote end of the unit illustrated in Fig. 6. This end of the unit is adapted to overlie the adjacent end of another unit which corresponds to the front end of Fig. 6. Vhen two units are overlapped, it will be seen that the extended portion 82 of the lower unit laps under the bottom part 24 of the upper unit; that the horizontal portion 34 of the flexible flashing of the upper unit overlaps the projecting portion of the flexible flashin;- of the lower unit and that the projecting portions of the top member 23 and counterflashing 30 of the upper unit overlap the top member and counterflashing portions of the lower unit. This arrangement is more clearly illustrated in the sectional illustration of Fig. 5. Under some circumstances, the overlapping metal parts, and especially the overlapping top members and counterflashings may be soldered to provide a substantially weatherproof joint therebetween whereby moisture is effectively prevented from entering under the counterflashing.

The exact form of overlapping joint may obviously be widely varied and if desired, the units may be provided with ends designed to abut one another and a separate oint covering unit provided. However, the above described form of end lap is convenient and practical.

In Fig. 4, I have illustrated a modified form of roof oining unit in which the base flashing is cut short so as to constitute merely a short depending flange which will serve to position the unit with respect to the inside face of the wall and which will serve to provide a smooth, non-cutting corner about which the flashing membrane may be bent without danger of damaging the same. The narrow base flashing is indicated at 35 and the counterflashing may be shortened somewhat so as to constitute merely a cover 36 for the bundledflashing membrane as indicated. It is highly desirable to cover the flashing membrane in order to protect the same during. handling and transportation and alsoto protect the flashing strip from mortar which may otherwise be dropped thereon during the construction of the brick wall.

In Fig. 8, I have illustrated a still further modification in which the flexible flashing membrane is folded or otherwise bundled between the base flashing 28 and the upwardly rebent portion thereof designated 37, the counterflashing designated 28 in this case thus serves first as a cover'to'prevent mortar and other foreign material from falling into the pocket formed by the rebent portion 37 of the base flashing and to assist in holding the rebent portion 37 in its rebent condition. Other arrangements may also be utilized for holdingthe membrane in its bundled condition to facilitate installation and handling of the unit.

I am aware that changes may be made in the above described construction without departing from thespirit of my invention, the scope of which may be determined by reference to the following claims, the same being'construed as broadlyas possible, consistent with the state of the art.

I claim as my invention:

1. A roof joining of the class described, comprising a flexible impervious member adapted to be positioned inthe corner formed by a roof and a wall extending upwardly th refrom, a portion of the member being disposed on the roof and another portion being disposed on the wall, and a relatively rigid mounting member to which a marginal portion ofsaid flexible member is anchored, said mounting member and the attached portion of said flexible member being adapted to be embedded, during the construction of a wall, in a layer of mortar between adjacent courses of masonry, the free portion of said flexible member being bundled adjacent the outer edge of said mounting member, and means for temporarily maintaining said free portion so bundled.

2. A roof joining of the class described, comprising a flexible impervious member adapted to be positioned in the corner formed by a roof and a wall extending upwardly therefrom, a portion of the member being disposed on the roof and another portion being disposed on the wall, and a relatively rigid mounting member to which a marginal portion of said flexible member is anchored, said mounting member and the attached portion of aid flexible member being adapted to be embedded, during the construction of a wall, in a layer of mortar between adjacent courses of masonry, the free portion of said flexible member being bundled adjacent the outer edge of said mounting member, and means integral with said mounting member for temporarily maintaining said free portion so bundled.

3. A roof joining of the class described, comprising a flexible impervious member adapted to be positioned in the corner formed by a roof and a wall extending upwardly therefrom, a portion of the member being dispose-don the roof and another portion being disposed on the wall, and a relatively rigid mounting member to which a marginal portion of said flexible member is anchored, said mounting member and the attached portion of said flexible member being adapted to be embedded, during the construction of a wall, in a layer of mortar between adjacent courses of masonry, the free portion of said flexible member being bundled adjacent the outer edge of said mounting member, and means integral with saidmounting member for covering said bundled portion to protect the same during construction of the wall and prior to spreading of the flexible member to operative position.

4. A roof joining unit adapted to be manufactured in a factory and supplied as a complete unit to a building under construction fol-mounting in a wall portion above the roof, said unit comprising a sheet metal mounting member having top and bottom parts integrally connected at their inner edges, a flexible impervious member having :1 marginal portion interposed between said top and bottom portions and having its free or exposed portion bundled adjacent the outer edge of said mounting member, said mounting member having a base flashing portion extending laterally from said bottom member and a counter-flashing extending from said top member, said base flashing and said counter flashing parts being arranged to temporarily retain said flexible member in said bundled condition and to cover and protect the flexible member while in such condition.

ADAM DAGG.

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