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Home / Assemblies / UL C107
UL C1073-hr Fire RatingJoint System
Mineral WoolDesign

Floor-to-Wall Joint — Mineral System

UL-listed 3-hour fire-rated floor-to-wall joint system. Floor-to-Wall Joint, 1-1/2" max width, Mineral wool packing with sealant with mineral wool backer.

Cross-Section Diagram

12FIRE-RATED JOINTSECTION · NOT TO SCALE2 LAYERSsee legend for ① ② ③
Legend
1Mineral wool backer(3")
2Mineral wool packing with sealant(1")

Specifications

Fire Rating
3-Hour
Load Bearing
No
Total Thickness
Varies
Source / Publisher
UL (Underwriters Laboratories)
Design Number
C107
Assembly Type
Joint System
Test Standard
ASTM E814
Construction Group
N/A
Number of Layers
2 layers

Applicable Codes

IBC 2021 §714IBC 2021 §715

Construction Summary

Floor-to-Wall Joint, 1-1/2" max width, Mineral wool packing with sealant with mineral wool backer

Material Layers

LayerMaterialThickness
1Mineral wool backer3"
2Mineral wool packing with sealant1"

Important Notice

This assembly listing is for reference only. Always verify against the current UL Product iQ database before specifying in construction documents. Material substitutions may void the fire rating. Consult with a qualified fire protection engineer for project-specific requirements.