HomeMy WebLinkAboutFile Documents.285 Pfister Dr.0027-2021-BCHO (6)VERSASHIELD®U NDERLAYMENT PRODUCT SPECIFICATIONS
VERSAS HIELD®C LASS A RATING LAYER R EQUIREMENTS
WHEN INSTALLED IN ACCORDANCE WITH SECTION 2.4 OF ELK'S ICBO ES ER 5627, VERSASHIELD UNDERLAYMENT CAN BE USED AS AN ALTERNATIVE
TO THE COVERING MATERIALS SPECIFIED IN SECTION 1516.3 OF THE UBC APPENDIX AND SECTION 1510.4 OF THE IBC OR SECTION R 907.4 OF THE IRC.
SpecificationPrescriptive Requirements
Performance Requirements
Test Method Reference
Performance Requirements
VSB1000
Roll
100 ft. minimum
42 in., ±0.7%
350 sq. ft. minimum
52.5 lb. minimum
15 lb. per 100 sq. ft. min.
Maximum of 25%
Packaged:
Linear Feet/roll
Roll Width
Area per roll
Roll Weight
Fabric Weight
Loss on ignition
MD
CD
60 lbf minimum
30 lbf minimum
ASTM D 146/D 828, 1" x 5" samples
ASTM D 146/D 828, 1" x 5" samples
MD
CD
Water Vapor Transmission
permeance, perm
Liquid water transmission test
400 grams minimum
550 grams minimum
3 minimum
Pass
D 1922, 2.5” x 3” samples
D 1922, 2.5” x 3” samples
E 96
D 4869
ASTM D 146
ASTM D 146
ASTM D 146
ASTM D 146
ASTM D 146
TAPPI T-1013 OM92
Average Breaking Strength @ 77 ±2 degree F. (Tensile Strength)
Tear Strength @ 77 ±2 degree F
Stone Coated Steel
Steel
Any Steel
Any Steel
Any Copper
Any Copper
Aluminum
Material
NOTE: VERSASHIELD IS AN APPROVED ALTERNATIVE TO #15 AND #30 FELT AS AN UNDERLAYMENT FOR ASPHALT SHINGLES. FOR LOW SLOPE
APPLICATIONS, 2/12 OR 4/12, OR WHEREVER LOCAL CODES REQUIRE, USE TWO LAYERS.
Direct to Deck
Shingle
Direct to Deck
Shingle
Batten Required
Shingle
Panel or
Standing Seam
Panel or
Standing Seam
Panel or Shingle
Shingle
Roof Type
0.013”
0.013”
0.013”
0.015”
0.016”
0.016”
0.018”
Min. Thickness
1 Layer
1 Layer + 30 Felt
1 Layer
1 Layer
1 Layer
1 Layer + 30 Felt
2 Layers
15/32” Plywood
N/A
N/A
2 Layers
N/A
N/A
2 Layers
N/A
Existing Wood
Shake/Shingle
1 Layer
1 Layer + 30 Felt
1 Layer
1 Layer
1 Layer
1 Layer + 30 Felt
N/A
Spaced
Sheathing
VERSASHIELD®CLASS B RATING LAYER R EQUIREMENTS
Steel
Any Steel
Any Copper
Any Aluminum
Material
Direct to Deck
Shingle
Batten Required
Shingle
Shingle
Panel or Shingle
Roof Type
0.013”
0.013”
0.016”
0.018”
Min. Thickness
1 Layer
N/A
1 Layer
1 Layer
15/32” Plywood
N/A
1 Layer
1 Layer
1 Layer
Existing Wood
Shake/Shingle
1 Layer
N/A
1 Layer
1 Layer
Spaced
Sheathing