CA1039920A

CA1039920A - Roof panel

Info

Publication number: CA1039920A
Application number: CA238,625A
Authority: CA
Inventors: William B. Mccready
Original assignee: Individual
Current assignee: Individual
Priority date: 1975-10-30
Filing date: 1975-10-30
Publication date: 1978-10-10

Abstract

ABSTRACT OF THE DISCLOSURE

A roof panel for low pitch roofs consisting of an elongated ribbon-like sheet with complementary interlocking portions along opposite sides for engagement with adjoining panels one side of the panel having a marginal nailing strip, a spaced parallel pair of ridges inside the said strip, and inwardly of the pair of ridges one of the interlocking joint portions.
A raised corrugation extends along the other side of the panel with the second of the interlocking joint portions connected with its outer wall. When installed the interlocking joint pro-vides a water barrier, a run-off trough is provided between the joint and the inner wall of the first or inner ridge and an additional, large capacity run-off trough is provided between the pair of ridges. Further, to assure a leak proof roof one or more sealants is employed e.g. (a) a butyl strip is applied to one of the ridges at the point of manufacture for compressive engagement by and adhesion to the inside of the corrugation of an adjoining panel when installed and (b) a bead of silicone sealant is applied over the interlocking joint after adjoining panels have been installed.

Description

This invention reIates to improvement in a roof panel ,,~ . . .
and especially an interlocking metal panel useable on low pitch ~;
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roofs.
BACKGROUND'OF'THE''INVENTION ~ ' The demand for easily applied and durable roof panels .. ; .
; has been growing and as more and more roof structures having a : , : .
~ low-pitch are being constructed, the need for a roof panel of , - .
metal, plastic, fibreglas-s and the like with an interlocking joint ;
of assured leak proof quality increases. The roofing panel in my -~ Canadian Patent ~694,174 shows a two level drain-off trough system -~ i and my Canadian copending application, Serial #238,630 shows a modified interlocking joint panel with a dual water barrier to . :, prevent water leading past the joint. -~
'. ' DETAILED DESCRIPTION'OF' THE'INVENTION

It is the purpose of this invention to provide a roof ~
of overlappIng panels with maximum assurance of long, no-leak life. -An object of the invention is to provide a roof panel : ~
:: .
having an additional, large capacity drain-off trough. ~

A further object is to provide a roof panel with a water ~ ;

; barrier sealant at the interlocking overlapped joint such as (a) ::.
a sealant tape applied initially at the point of manufacture and/ :-or (b) a sealing bead spread exteriorly on the joint between , .,, .,: .
adjacent panels following the installation of the roof panel.

To the accomplishment of these and related objects as ' shall become apparent as the description proceeds, the invention ; resides in the contruction, combination and arrangement of parts ~. , as shall be hereinafter more full~ described, illustrated in the accompanying drawings and pointed out in the claims hereunto .. ..
' appended.
' B~IEF' DESCRIPTION'OF'THE'DRAWINGS
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In the drawings:
Figure 1 is a plan view of a part of a roof covered with the new-panels;

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, Figures 2, 3 and 4 are end elevations of a variety of ~" panels of different profiles each incorporating the additional " . , drain-off trough and a factory-applied sealant taper and Figure 5 is an end elevation of the interlocking of - two panels as seen in Figure 2 lacking the sealant tape but with an on-site spread bead of sealing mastic in the joint; and ~ Figure 6 is a similar end elevation of a joint of the - panels as seen in Figure 4 lacking the tape but including the on-site spread sealing bead.
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The assembled roof shown in Figure 1 comprises a series of overlapping and interlocked panels 1 preferably of non-corro-sive metal such as aluminum in ribbon-like sheets o.f approximately .019 inches in thickness. Panels up to 40 feet in length run , from the ridge 2 to the eave 3. A suitable ridge cap 4, eave i edge fillers and gable end flashings may be used but do not con-` ~ stitute a part of this invention although the ridge cap and eave :-~ edge fillers would take cognizance of the end profile of the specific panel employed. A desirable width of panel providing `
interlocking joints at 12 inch centers is conveniently handled .. ,.. ; , ~ and easily applied directly over building paper on a deck free ': i ;
of uneveness and foreign matter.
The panel profile seen in Figure 2 includes an inter-locking joint resembling that of my mentioned patent. This panel is of uniform design throughout its length. If has a flat ~ -smooth body 5 for most of its width though a spaced pair of small parallel ribs 6 may extend longitudinally for added strength and water drain-off guidance with a raised corrugation 7 and 8 re-spectively near each of the opposite sides, said channels being in the ~orm o~ inverted channels with flat tops 7a and 8a and inclined sides 7b and 8b. On the outer sloping side 7b of cor-rugation 7 the panel is finished with an upwardly inclined

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edge 9 th.at serVes as th.e male part of the overlapping inter-locking joint ~etween adjoining panels. On the outer sloping side 8b corrugation 8 near the opposite edge of the panel an upwardly inclined socket la is formed by t~o reverse folds, open at its : ~ :
lower end and ly;ng at substantially the same angle as the male part 9 it serves as the complementary female part of the panel interlocking joint. ~
Outwardly of the socket side of corrugation 8 an in- . ..
,. :,.
:~ verted V-shaped ridge 11 with inner and outer sloping sides rises .
. to approximateIy the same level as the corrugation and outwardly of ridge 11 lies a second similar ridge 12 beyond which the panel :~
extends coplanar with the body 5 in a marginal nailing strip 13.
: Th.us it wlll be seen that when a roof is covered with panels of .~. :
this interlocking profile, the upwardly inclined male part flange .
9 fitted in the female socket 10 provides a primary water run-off .
trough, that any seepage past this joint will flow away in the second run-off trough between the joint and the confronting wall of ridge 11, and finally, that if water rose over the top of this ridge there is the additional large capacity drain-off trough lying between the ridges 11 and 12. To further assure a leak .: .
proof roof I apply a sealant 14, here shown as a butyl tape ~ ~.
inch wide and 3/16 inch deep, near the top on the inner wall of ; ~ .
ridge 11 facing the female socket 10. The tape has adhesive on :;
opposite faces each normally protected by a peel-off cover one ~ .
such cover being removed from the under face when the tape is applied to the panel at the factory and the upper face cover is removed only after a panel is installed and the overlapping edge ..
of the next adjoining panel is about to be connected, at which . -time the inner face of the,outer wall 7b of corrugation 7 is swung . .
by a partial rotative movement into self-sealing and compressing engagement with said tape 14 Not only is this sealant tape barrier water tigh.t but it effectively restrains the entrainment of air past the joint.

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3~0 The profiles of panels shown in Figures 3 and 4 employ an interlocking joint similar to that disclosed in the mentioned copending application. In Figure 3 the elongated ribbon-like panel l has the same flat body 5 with spaced longitud-inally extending ribs 6 already described. Likewise there is along one side of the panel the marginal nailing strip 13 and in-wardly thereof the parallel spaced pair of ridges 12 and ll. In ~
this case however the female joint portion is in the form of a ~ f , ' low level, substantially horizontal, inwardly facing socket 15 fashioned by two reverse folds near the junction of the inner slope of ridge 11 and the flat body S. Along the other side of the panel is a raised corrugation 16 like an inverted channel with a flat top 16a and outwardly sloping sides 16b and of a size to o~erlie the female socket 15 and both ridges 11 and 12 . , .
of an adjoining panel. At the base of the outer side 16b of the , corrugation there is an inturned flange 17 coplanar with the panel i;, body 5 that terminates in a flexible and upwardly bowed male joint ~, part 18. The inner ridge ll has a flat truncated top l9 on which , is mounted a strip of sealant tape 14 rising to a level at least the height of ridge 12 and so compressibly engageable by the under side of the top 16a of corrugation 16 of an overlapping interconnecting panel.
. ., The panel shown in Figure 4 is identical to that shown in Figure 3 with these exceptions that the ridge 11 is not truncated but in the full form of an inverted V and the sealant tape 14 is applied to the outer slope of ridge 12 near the top thereof and thus subject to being compressibly engaged by and adhered to the inner sloping side wall 16b of corrugation 16 of an overlapping interconnecting panel.
., , Figure S shows an end view of a pair of interlock-ing panels of the profile according to Figure 2 but lacking the sealant strip 14. Ins~ead, though it could be in addition to :' ~4-, such strip, a bead 20 of silicone sealant or the like is spread along the V trough joint where the upwardly inclined male part 9 engages the female socket 10, after the adjoining panels have been installed. Likewise Figure 6 shows an end view of a pair of interconnected panels of the profile according to Figure 4, lacking the sealant tape 14 but having a bead 20 of the sealant spread -along the edge of the joint where the outer wall 16a of corrugation 16 engages the flat panel body 5, after the adjoining panels have been installed on a roof.
, 10 From the foregoing it will be obvious that an abundance of caution has been shown to provide a durable, leak . . : . .
j proof roof panel that can be manufactured economically, shipped ; compactly, and installed easily and rapidly. It is moreover a ~ -panel that is esthetically attractive, durable and waterproof ;-to an exceptional degree due to the structure of the complementary , interlocking edges and the number and capacity of successive run-,l off troughs. ~-It is to be understood that various changes in !~ the size, shape and arrangement of parts may be made to the form of invention herein shown and described, wi~hout departing from ., .
- the spirit of the invention or scope of the claims. -: . , .-;, ",~ ~.

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Claims

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:

1. A roof panel of substantial water run-off capacity for low pitch roofs designed to be applied in overlapping relation with an adjoining panel comprising an elongated sheet up to forty feet in length having complementary interlocking joint portions along opposite longitudinal sides, a first side of said sheet having one of said interlocking joint portions spaced inwardly therefrom to provide a nailing strip, and a pair of spaced longitudinal ridges between such nailing strip and the adjacent inwardly spaced joint portion and a second side of the sheet having the other of said joint portions and a raised corrugation of a size to overlie the pair of spaced longitudinal ridges of an adjoining sheet when applied thereto in interlocking relation, wherein the said ridges are in the form of inverted V's and said corrugation is in the form of an inverted channel having a flat top and sloping sides lying at substantially the same angle as confronting sides of the respective ridges, and a sealant tape secured to the upper side of one of said ridges near the top thereof for engagement by the underside of the corrugation of an adjoining panel.

2. A roof panel according to claim 1, wherein said sealant tape is com-pressively engaged by and adhesively secured to the corrugation of an adjoining panel on the relative rotative movement of the latter on installation.

3. A roof panel according to claim 2, wherein said sealant is a tape with adhesive surfaces on opposite sides normally protected by peel-off covers, the underside cover being removed when the sealant tape is secured to the panel ridge at the time of manufacture of the panel and the upper cover left in place until the panel is being installed on a roof.

4. A roof panel designed to be applied in overlapping relation with an adjoining panel comprising a narrow elongated sheet for installation at 12 inch centers and up to 40 feet in length, having a flat smooth body with a spaced pair of parallel longitudinally extending ribs for added strength and water drain-off guidance, complementary interlocking joint portions along opposite longitudinal sides and an inverted channel with a flat top and inner and outer sloping sides located inwardly, that is toward the center of the panel, of each of said interlocking joint portions, a first side of said sheet having one of said interlocking joint portions spaced inwardly therefrom to provide a nailing strip, and a pair of spaced longitudinal ridges between such nailing strip and the adjacent inwardly spaced joint portion each of said ridges being in the form of an inverted V having inner and outer sloping sides and of the same height as the inverted channel, said first side joint portion being a downwardly facing female socket on the outer sloping side of said first side inverted channel and the se-cond side male joint portion being an upwardly inclined edge of the panel out-wardly of the second side inverted channel designed to overlie the pair of spaced longitudinal ridges of an adjoining sheet when applied thereto in inter-locking relation providing a leak proof roof with (i) a primary water run-off trough at the interlocking joint formed by the female socket slope of the first side inverted channel, the upwardly inclined male joint portion and the outer sloping side of the second side inverted channel, (ii) a secondary full height run-off trough between the joint and the inner side of the inner ridge, and (iii) a final full height large capacity drain-off trough lying between said pair of ridges, and a strip of sealant adhesively secured to the upper side of one of said ridges near the top thereof that is compressively engaged by and adhesively secured to the underside of the inverted channel of an adjoining panel on the relative rotative movement of the latter on installation.