I could use, and would be grateful for, a good narrative for no firewall between units in the attic of a duplex. Thanks in advance!
Photos please Ruddel. I will try but picture would create the backdrop.
Upon entering the attic space, my observations showed that no fire separation has been provided to separate the two units.
Two-family dwellings, in most jurisdictions, are typically separated from each other by a wall and/or floor assemblies having not less than 1-hour fire-resistance rating.
They usually extend to the underside of the roof sheathing or exterior wall assemblies.
Checking with the local Jurisdiction could confirm this requirement.
Hope this helps.
Sure would be nice to see a picture. Is it possible the the floors have 5/8" type x drywall and there is a draft stop vertically in attic?
Some jurisdictions (many) allow 5/8" drywall at ceiling in place of attic separation.
1/2" Gypsum type X…
two layers of 1/2" drywall…
…around these parts anyway.
In as much as the garage probably already has 1/2" drywall in the ceiling and on the house wall, adding another 1/2" might prove the less expensive method.
Then there’s the issue of exposed wood framing around the hatch!
Or a** wooden pull-down ladder…**
You had many to help you. Here is some technical.