hello, would you explain what is UL-263 say about 1 hour fire rated design for walls and floors? i have a detail from national gypsum to increase the existing 3/4" plaster walls to 1 hour rated walls by installing 1 layer of 5/8" type-X to existing plaster walls. am i missing anything to add? is...
hello, could you tell me what is UL-263 say about fire rated design on 1 hour rated walls? i have existing plaster walls and i need to know if one layer of gypsum type-X is enough. i have a detail from national gypsum about reinforcing plaster walls with 1 type-X 5/8" installed on top of it...
