CA2941321A1 - Roof edge snow deflector - Google Patents
Roof edge snow deflector Download PDFInfo
- Publication number
- CA2941321A1 CA2941321A1 CA2941321A CA2941321A CA2941321A1 CA 2941321 A1 CA2941321 A1 CA 2941321A1 CA 2941321 A CA2941321 A CA 2941321A CA 2941321 A CA2941321 A CA 2941321A CA 2941321 A1 CA2941321 A1 CA 2941321A1
- Authority
- CA
- Canada
- Prior art keywords
- roof
- snow
- occur
- metal
- avalanches
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 230000004888 barrier function Effects 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 6
- 230000000116 mitigating effect Effects 0.000 claims abstract description 3
- 238000005253 cladding Methods 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract 1
- 230000003466 anti-cipated effect Effects 0.000 abstract 1
- 230000035508 accumulation Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 210000003195 fascia Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/10—Snow traps ; Removing snow from roofs; Snow melters
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/17—Ventilation of roof coverings not otherwise provided for
- E04D13/178—Ventilation of roof coverings not otherwise provided for on the eaves of the roof
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/0404—Drainage on the roof surface
- E04D13/0481—Drainage guiding provisions, e.g. deflectors or stimulation by inclined surfaces
- E04D2013/0486—Deflectors
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
The apparatus is a new and unique invention which when installed along a metal cladded roof's edge will intercept the snow discharges which occur as mini-avalanches and thus avoid the unauthorized physical use of a neighbor's private property. It consists of a non-solid or, porous barrier of horizontal metal strips located along a roof edge but at some distance from it. The barrier and gap so created absorbs the dynamic impact of mini avalanches and deflects the intercepted snow downwards, thus mitigating the adverse impacts on neighboring property which would otherwise occur.
Roof profiles vary and are site specific. Some have steep inclines, others are less steep. The dynamic forces generated by the min-avalanches accordingly do vary. The frictional properties of the metal cladding, the steepness of the roof's slope, the length of run between its apex and eave and the roof's orientation to the sun, are all factors which influence the types of discharge which occur.
Accordingly, it is important that the anchorage of the snow deflecting barriers be designed appropriately based on the anticipated forces involved, as such, alternate configurations for the design of the supporting brackets and anchorages are herein included. These are categorized as those for, roofs with steep slopes, and those with flatter or shallow slopes.
Roof profiles vary and are site specific. Some have steep inclines, others are less steep. The dynamic forces generated by the min-avalanches accordingly do vary. The frictional properties of the metal cladding, the steepness of the roof's slope, the length of run between its apex and eave and the roof's orientation to the sun, are all factors which influence the types of discharge which occur.
Accordingly, it is important that the anchorage of the snow deflecting barriers be designed appropriately based on the anticipated forces involved, as such, alternate configurations for the design of the supporting brackets and anchorages are herein included. These are categorized as those for, roofs with steep slopes, and those with flatter or shallow slopes.
Description
Description Background of the Invention The use of metal cladding on roofs is promoted for its longevity and is considered an attractive alternative to the traditional use of asphalt shingles, however unlike traditional coverings, such roofs do not retain snow precipitations on their surfaces but are prone to shed the snow. This phenomenon becomes problematical where the property owner's side yard has a minimal width and is incapable of storing such discharges. The result is an unauthorized use of neighboring property.
Snow-guards, snow fences and such like devices are commercially available and are commonly used in an attempt to retain the snow on the roof surface, but such devices with their low profiles, while providing some mitigation are incapable of preventing mini-avalanches from occurring.
Metal surfaced roofs with their low frictional resistance properties and tendency to absorb heat rapidly, cause snow accumulations on roofs to be released in the form of min-avalanches, without warning and in an unpredictable manner. The steepness of a roofs slope, its orientation to the sun and the length of travel between its apex and cave, are contributing factors to the types of discharge which occur.
Invariably, the snow slides off the roof with considerable force and accumulates against the wall of a neighboring property. This is a common occurrence where distances between properties are insufficient to accommodate the discharges from such min-avalanches.
The snow accumulations mentioned above get compacted with repeated impacts and, where furnace, environmental system and natural gas water heater vents exist, the piled up snow blocks them. This causes the home heating system and the fresh air environmental systems to malfunction and pose an inherent health hazard. The conditions could occur at night when the occupants are asleep and unbeknownst to them they are then inadvertently exposed to the noxious gases from a malfunctioning combustion system. In addition to the above, in colder weather the vinyl siding of a home become less resilient to impact and if ice layers are embedded in the discharges, the siding could crack and be damaged.
The projected trajectory of the snow discharges "without" and "with" a snow deflector are illustrated in Diagrams 1.0 & 2.0 included in the section listing the DRAWINGS.
Diagram 1.0 "Snow Accumulation without a Roof Edge Snow Deflector"
[showing snow trajectory and snow accumulation on neighbor's building wall and the blocking of furnace, environmental and natural gas water heater vents]
Diagram 2.0 "Snow Accumulation with a Roof Edge Snow Deflector"
[showing snow deflection and storage within one's own property]
Details of the Apparatus The "Roof Edge Snow Deflector" or, proposed trade name "SNO-DEF" consists of a plurality of prefabricated metal brackets extending out from the edge of the roof and secured to the structural truss members of the roof Four rows of metal strips are attached to these brackets in a manner such that a gap is created between the roof edge and the barrier; thus the snow discharges are intercepted and deflected downwards, away from a neighboring property.
Where roof slopes are steep and the consequent dynamic forces severe, the appropriate attachment is as illustrated in Fig: 1, 2 & 3 below. The brackets in this alternative are attached to the underside of the roof and bolted to the truss members.
Where roof slopes are less steep, an alternative attachment method as illustrated in Fig: 4, 5 & 6 could be appropriate. The dynamic force in such cases is not as severe and thus the brackets can be secured to the truss members with lag bolts screwed into the trusses through the metal cladding.
The design principles as outlined for this patent remains unchanged. However, the advantage of the former method is that the integrity of the surface of the metal cladding against leaks is not compromised as hole penetrations for the lag bolts are not required.
Fig: 1, 2 & 3 are described in detail as follows:
Fig: 1 SECTIONAL VIEW [of the apparatus for roofs with "steep slopes".]
A 1.0 Roof with metal cladded surface.
A 2.0 Upper member of the roof truss extension which supports the roof overhang.
A 3.0 Lower member of the roof truss.
A 4.0 Building wall.
A 5.0 Perforated aluminum soffit under overhang.
A 6.0 Eaves-trough attached to fascia board of roof.
A 7.0 Structural plate metal bracket which supports the metal plate non-solid horizontal strip barrier.
A 8.0 Structural bolts securing the metal bracket in (7.0) above to the roof truss upper member.
A 9.0 Metal stub brackets shop welded to metal bracket described in (7.0) above for strip barrier.
A 10.0 4 rows of metal strips to form non-solid barrier, bolted to the brackets provided in (9.0) above.
Fig: 2 PLAN VIEW [of the apparatus for roofs with "steep slopes".]
Fig: 3 ELEVATION VIEW [of the apparatus for roofs with "steep slopes".]
Fig: 4, 5 & 6 are described in detail as follows:
Fig: 4 SECTIONAL VIEW [of the apparatus for roofs with "shallow slopes".]
A 1.0 Roof with metal cladded surface.
A 2.0 Upper member of the roof truss extension which supports the roof overhang.
A 3.0 Lower member of the roof truss.
A 4.0 Building wall.
A 5.0 Perforated aluminum soffit under overhang.
A 6.0 Eaves-trough attached to fascia board of roof.
A 7.0 Structural angle secured with lag bolts into the upper truss member through the metal cladding A together with the support bracket shop welded to it.
A 8.0 Lag bolts securing the metal bracket in (7.0) above to the upper member of the roof truss.
A 9.0 Plate metal bracket extension shop welded to metal bracket described in (7.0) above.
^ 10.0 Plate metal bracket for horizontal barrier strips shop welded to bracket in (9.0) above) A 11.0 Shop welds attaching plate metal brackets to support bracket in (7.0) above ^ 11.0 Metal stub brackets shop welded to metal bracket described in (10.0) above for strip barrier.
A 12.0 4 rows of metal strips to form non-solid barrier, bolted to the brackets provided in (11.0) above.
Fig: 5 PLAN VIEW [of the apparatus for roofs with "shallow slopes".1 Fig: 6 ELEVATION VIEW [of the apparatus for roofs with "shallow slopes".]
Snow-guards, snow fences and such like devices are commercially available and are commonly used in an attempt to retain the snow on the roof surface, but such devices with their low profiles, while providing some mitigation are incapable of preventing mini-avalanches from occurring.
Metal surfaced roofs with their low frictional resistance properties and tendency to absorb heat rapidly, cause snow accumulations on roofs to be released in the form of min-avalanches, without warning and in an unpredictable manner. The steepness of a roofs slope, its orientation to the sun and the length of travel between its apex and cave, are contributing factors to the types of discharge which occur.
Invariably, the snow slides off the roof with considerable force and accumulates against the wall of a neighboring property. This is a common occurrence where distances between properties are insufficient to accommodate the discharges from such min-avalanches.
The snow accumulations mentioned above get compacted with repeated impacts and, where furnace, environmental system and natural gas water heater vents exist, the piled up snow blocks them. This causes the home heating system and the fresh air environmental systems to malfunction and pose an inherent health hazard. The conditions could occur at night when the occupants are asleep and unbeknownst to them they are then inadvertently exposed to the noxious gases from a malfunctioning combustion system. In addition to the above, in colder weather the vinyl siding of a home become less resilient to impact and if ice layers are embedded in the discharges, the siding could crack and be damaged.
The projected trajectory of the snow discharges "without" and "with" a snow deflector are illustrated in Diagrams 1.0 & 2.0 included in the section listing the DRAWINGS.
Diagram 1.0 "Snow Accumulation without a Roof Edge Snow Deflector"
[showing snow trajectory and snow accumulation on neighbor's building wall and the blocking of furnace, environmental and natural gas water heater vents]
Diagram 2.0 "Snow Accumulation with a Roof Edge Snow Deflector"
[showing snow deflection and storage within one's own property]
Details of the Apparatus The "Roof Edge Snow Deflector" or, proposed trade name "SNO-DEF" consists of a plurality of prefabricated metal brackets extending out from the edge of the roof and secured to the structural truss members of the roof Four rows of metal strips are attached to these brackets in a manner such that a gap is created between the roof edge and the barrier; thus the snow discharges are intercepted and deflected downwards, away from a neighboring property.
Where roof slopes are steep and the consequent dynamic forces severe, the appropriate attachment is as illustrated in Fig: 1, 2 & 3 below. The brackets in this alternative are attached to the underside of the roof and bolted to the truss members.
Where roof slopes are less steep, an alternative attachment method as illustrated in Fig: 4, 5 & 6 could be appropriate. The dynamic force in such cases is not as severe and thus the brackets can be secured to the truss members with lag bolts screwed into the trusses through the metal cladding.
The design principles as outlined for this patent remains unchanged. However, the advantage of the former method is that the integrity of the surface of the metal cladding against leaks is not compromised as hole penetrations for the lag bolts are not required.
Fig: 1, 2 & 3 are described in detail as follows:
Fig: 1 SECTIONAL VIEW [of the apparatus for roofs with "steep slopes".]
A 1.0 Roof with metal cladded surface.
A 2.0 Upper member of the roof truss extension which supports the roof overhang.
A 3.0 Lower member of the roof truss.
A 4.0 Building wall.
A 5.0 Perforated aluminum soffit under overhang.
A 6.0 Eaves-trough attached to fascia board of roof.
A 7.0 Structural plate metal bracket which supports the metal plate non-solid horizontal strip barrier.
A 8.0 Structural bolts securing the metal bracket in (7.0) above to the roof truss upper member.
A 9.0 Metal stub brackets shop welded to metal bracket described in (7.0) above for strip barrier.
A 10.0 4 rows of metal strips to form non-solid barrier, bolted to the brackets provided in (9.0) above.
Fig: 2 PLAN VIEW [of the apparatus for roofs with "steep slopes".]
Fig: 3 ELEVATION VIEW [of the apparatus for roofs with "steep slopes".]
Fig: 4, 5 & 6 are described in detail as follows:
Fig: 4 SECTIONAL VIEW [of the apparatus for roofs with "shallow slopes".]
A 1.0 Roof with metal cladded surface.
A 2.0 Upper member of the roof truss extension which supports the roof overhang.
A 3.0 Lower member of the roof truss.
A 4.0 Building wall.
A 5.0 Perforated aluminum soffit under overhang.
A 6.0 Eaves-trough attached to fascia board of roof.
A 7.0 Structural angle secured with lag bolts into the upper truss member through the metal cladding A together with the support bracket shop welded to it.
A 8.0 Lag bolts securing the metal bracket in (7.0) above to the upper member of the roof truss.
A 9.0 Plate metal bracket extension shop welded to metal bracket described in (7.0) above.
^ 10.0 Plate metal bracket for horizontal barrier strips shop welded to bracket in (9.0) above) A 11.0 Shop welds attaching plate metal brackets to support bracket in (7.0) above ^ 11.0 Metal stub brackets shop welded to metal bracket described in (10.0) above for strip barrier.
A 12.0 4 rows of metal strips to form non-solid barrier, bolted to the brackets provided in (11.0) above.
Fig: 5 PLAN VIEW [of the apparatus for roofs with "shallow slopes".1 Fig: 6 ELEVATION VIEW [of the apparatus for roofs with "shallow slopes".]
Claims
The Embodiment of the Invention in which an Exclusive Property or Privilege is Claimed is defined as follows:
A snow deflector installed at the edge of the roof comprising a non-solid barrier designed to intercept the snow discharges from a metal cladded roof, with such a barrier being located at specific distance from the roofs edge. The gap so formed to permit the accumulated snow to be deflected downwards and to be stored on ones own property: thus mitigating the negative impacts which otherwise occur on a neighboring property.
The concept shown consists of prefabricated metal brackets anchored to the upper truss members which support the roof overhang, to which is attached a non-solid, or, porous barrier consisting of four rows of continuous metal strips. The apparatus is designed to intercept the snow discharges which occur and deflect such discharges downwards and away from the neighboring property. The concepts are illustrated in Fig 1, 2 & 3 and Fig: 4, 5 & 6 respectively.
A snow deflector installed at the edge of the roof comprising a non-solid barrier designed to intercept the snow discharges from a metal cladded roof, with such a barrier being located at specific distance from the roofs edge. The gap so formed to permit the accumulated snow to be deflected downwards and to be stored on ones own property: thus mitigating the negative impacts which otherwise occur on a neighboring property.
The concept shown consists of prefabricated metal brackets anchored to the upper truss members which support the roof overhang, to which is attached a non-solid, or, porous barrier consisting of four rows of continuous metal strips. The apparatus is designed to intercept the snow discharges which occur and deflect such discharges downwards and away from the neighboring property. The concepts are illustrated in Fig 1, 2 & 3 and Fig: 4, 5 & 6 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2941321A CA2941321A1 (en) | 2016-09-06 | 2016-09-06 | Roof edge snow deflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2941321A CA2941321A1 (en) | 2016-09-06 | 2016-09-06 | Roof edge snow deflector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2941321A1 true CA2941321A1 (en) | 2018-03-06 |
Family
ID=61557407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2941321A Abandoned CA2941321A1 (en) | 2016-09-06 | 2016-09-06 | Roof edge snow deflector |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2941321A1 (en) |
-
2016
- 2016-09-06 CA CA2941321A patent/CA2941321A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20190906 |