Location roof detail fields

Touchstone validation rules for fields related to roof details for a location.

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Our individual risk methodology follows a structured, logical approach that groups building characteristics according to their function to reflect the contribution of each characteristic to overall building performance. For information about the secondary risk characteristics that are supported in a specific model, refer to the "Model in Touchstone” chapter in the model description, which is available on the Client Portal. Documentation for some Verisk models includes a separate document that serves as a guide to the secondary risk characteristics (SRC) used in the model.


Field	Perils	Description	Validation rules	Default value
Roof Geometry	HI TC US HU US ST— straight-line winds, tornadoes (added in version 10.0) US WF	One of the following values to describe the shape of the roof of the building at this location: Unknown/default (0) Flat (1) Gable end without bracing (2) Hip (3) Complex (4) Stepped (5) Shed (6) Mansard (7) Gable end with bracing (8) Pyramid (9) Gambrel (10) The geometry of the roof affects the intensity of wind pressures and the resulting uplift resistance.	Optional Defaults to a value in the Touchstone user interface	Unknown/default (0)
Roof Pitch	HI TC US HU US ST - Straight-Line Winds, Tornadoes, Hail	One of the following values to describe the slope of the roof of the building at this location: Unknown/default (0) Low (less than 10°) (1) Medium (10° to 30°) (2) High (more than 30°) (3) Low-pitch roofs have greater uplift forces acting on the roof as compared to high-pitch roofs.	Optional Defaults to a value in the Touchstone user interface	Unknown/default (0)
Roof Covering	AU WF HI TC US HU US ST - Straight-Line Winds, Tornadoes, Hail US WF	One of the following values to describe the material used to cover the roof of the building at this location: Unknown/default (0) Asphalt shingles (1) Wooden shingles (2) Clay/concrete tiles (3) Light metal panels (4) Slate (5) Built-up roof with gravel (6) Single-ply membrane (7) Standing seam metal roofs (8) Built-up roof without gravel (9) Single-ply membrane ballasted (10) Hurricane Wind-Rated Roof Coverings (11) Photovoltaic (12) (added in June 2024 for US WF) The Hurricane Wind-Rated Roof Coverings (11) option is not applicable with the Verisk Wildfire Model for the United States. Damage to the roof covering can result in significant water damage to the interior of the building and contents.	Optional Defaults to a value in the Touchstone user interface	Unknown/default (0)
Roof Deck	CA EQ HI EQ HI TC JP EQ US EQ US HU US ST— straight-line winds, tornadoes (added in version 10.0) NZ EQ	One of the following values to describe the material used and the construction type of the roof deck of the building at this location: Unknown/default (0) Plywood (1) Wood planks (2) Particle board/OSB (3) Metal deck with insulation board (4) Metal deck with concrete (5) Pre-cast concrete slabs (6) Reinforced concrete slabs (7) Light metal (8) Roof decks transfer the roof loads to the underlying joists and purlins. Damage to the roof deck results in the breach of the building envelope, resulting in significant building and interior damage. With respect to seismic performance, the weight of the roof can be critical. It is not desirable to make the roof heavy because it induces higher lateral forces in the structure during shaking.	Optional Defaults to a value in the Touchstone user interface	Unknown/default (0)
Roof Covering Attachment	HI TC US HU US ST - Straight-Line Winds, Tornadoes	One of the following values to describe the type of connections used to secure the roof covering to the roof deck of the building at this location: Unknown/default (0) Screws (1) Nails/staples (2) Adhesive/epoxy () Mortar (4) Damage to the roof can result due to the improper attachment of the roof covering to the underlying roof deck.	Optional Defaults to a value in the Touchstone user interface	Unknown/default (0)
Roof Deck Attachment	US HU US ST - Straight-Line Winds, Tornadoes	One of the following values to describe the type of connections used to secure the roof deck to the underlying roof support system of the building at this location: Unknown/default (0) Screws/bolts (1) Nails (2) Adhesive/epoxy (3) Structurally connected (4) 6d nails @ 6 spacing, 12 on center (5) 8d nails @ 6 spacing, 12 on center (6) 8d nails @ 6 spacing, 6 on center (7) Damage to the roof can result as a result of improper attachment of the roof deck to the underlying roof support system.	Optional Defaults to a value in the Touchstone user interface	Unknown/default (0)
Roof Anchorage	HI TC US HU US ST - Straight-Line Winds, Tornadoes	One of the following values to describe the type of connections used to secure the roof support system to the walls of the building at this location: Unknown/default (0) Hurricane Ties (1) Nails/Screws (2) Anchor bolts (3) Gravity/friction (4) Adhesive epoxy (5) Structurally Connected (6) Clips (7) Roof anchorage establishes a load path to transfer wind loads from the roof to the walls. Hurricane straps provide such an anchorage.	Optional Defaults to a value in the Touchstone user interface	Unknown/default (0)
Roof Hail Impact Resistance	US ST - Hail	One of the following values to describe the class of the hail impact-resistant roof covering material for the building at this location, based on UL2218, Impact Resistance of Prepared Roof Covering Materials : Unknown/Non-impact-resistant (0) Impact-resistant A (1) (least impact-resistant) Impact-resistant B (2) Impact-resistant C (3) Impact-resistant D (4) (most impact-resistant) This field only applies to the hail sub-peril. UL2218 defines four classes of prepared sheets of panels installed in overlapping rows on roofs.	Optional
Roof Year Built	HI TC US HU US ST - Straight-Line Winds, Tornadoes, Hail	Year in which the roof of the building at this location was built A value of 0 for this field in your import data represents Unknown/default. With age, roofs lose their strength to resist wind loads and hence are more vulnerable.	Optional Defaults to a value in the Touchstone user interface Can be a numeric value between 1000 and the current year, inclusive (with a maximum year of 2100)	Blank
Tank	CA EQ HI EQ JP EQ US EQ	One of the following values to indicate whether there are rooftop tanks on the higher buildings adjoining the building at this location: Unknown/default (0) No (1) Yes (2) Rooftop tanks on adjoining, higher buildings are a falling hazard during earthquakes.	Optional
Chimney	CA EQ HI EQ JP EQ US EQ	One of the following values to indicate whether the building at this location has a chimney and, if so, to describe the height of the chimney: Unknown/default (0) No (1) Yes, height less than 2 feet. (2) Yes, height 2-5 feet. (3) Yes, height more than 5 feet. (4)	Optional
Skylight (added in June 2024)	US WF	Options: Unknown/Default - Fixed (0) No Skylights (1) Operable (2)		Unknown/Default (0)
Fire Rating for Roof Covering (added in June 2024)	US WF	Unknown/No Rating (0) Fire Rated Class A (1) Fire Rated Class B (2) Fire Rated Class C (3)		Unknown/No Rating (0)
Soffits (added in June 2024)	US WF	Unknown/Default (0) No Soffit (1) Soffit, Aluminum/Vinyl, Designed for Wind Loads (2) Soffit, Aluminum/Vinyl, Not Designed for Wind Loads (3) Soffit, Other, Designed for Wind Loads (4) Soffit, Other, Not Designed for Wind Loads (5)		Unknown/Default (0)
Roof Overhang (added in June 2024)	US WF	Unknown/Default (0) No Overhang (1) Overhang/Rake (8-36 in. (2) Overhang/Rake (<8 in. (3) Overhang/Rake (>36 in. (4)		Unknown/Default (0)
Roof Vents (added in June 2024)	US WF	Unknown/Default (0) No Roof Vents (1) Roof Vents (Turbines, Goose Neck, Ridge Vents, Etc. (2)		Unknown/Default (0)
Roof Vent Size (added in June 2024)	US WF	Unknown/Default (0) 1/8 inc. or Smaller Mesh or Wildfire Resistant (1) ¼-inc. or No Mesh (2)		Unknown/Default (0)