jar546
CBO
Take your best guess.
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Why Is This Being Done?
- Thread starter jar546
- Start date
TheCommish
SAWHORSE
Thought it was a good energy savings idea
bill1952
SAWHORSE
fire rating
Inspector Gadget
REGISTERED
Forget the "why" of what's being done,
WHAT is being done?
WHAT is being done?
Insulation is added, whether exterior or interior, to reduce the hollow rattling noise when a door within the frame is closed. They used to fill the frames with grout, but the moisture in the grout would rust the frames. The Steel Door Institute no longer recommends grouting. Sometimes fiberglass insulation is used, but the foam insulation works better.
north star
MODERATOR
- Joined
- Oct 19, 2009
- Messages
- 4,596
# ~ #
Might be some room privacy installation [ i.e. - sealing the openings
in a room \ space ].
# ~ #
Might be some room privacy installation [ i.e. - sealing the openings
in a room \ space ].
# ~ #
We still grout door frames, particularly in industrial facilities. This is why galvanized welded door frames are a thing.
When they rust out, its time to replace them. I've seen them last ~50 years which seems reasonable.
In any case, grouting or foaming, you do it AFTER the door is installed.
When they rust out, its time to replace them. I've seen them last ~50 years which seems reasonable.
In any case, grouting or foaming, you do it AFTER the door is installed.
steveray
SAWHORSE
Thats what I was thinking...thermal bridging....
TheCommish
SAWHORSE
They though it was a good energy savings idea. I don't, the metal will conduct the temperature delta right through it.
It may have some value to air sealing if they foam the flange after it it installed in block or solid wall
steveray
SAWHORSE
Gotta be a little better no? If it ends up air sealed that is... Plus the sound?
TheCommish
SAWHORSE
probably a bit better
You'll still have thermal bridging through the frame unless you use a frame with a thermal break, which is available from several hollow metal manufacturers.