Q: Hi, we were talking about the door bottoms. i have a client that needs quiet door threshold sealers (It's a meditation Hall ) I need 4 that will 1) allow a closer to close it 2) seal out noise 3) will be quiet as it closes. (the click as it retracts fully will not work on one of the doors . On the other 3 it could be OK. I was leaning towards the 430_PKL or the 4131_PKL until I learned about the click on your video.(It had occured to me that there could be some clicking noise, but I didn't know for sure) for the door that cannot have a clicking noise, I was thinking of the 2212_PK773 door shoe on pg 227 of the acoustic catalog . I am also interested in the zero products you mentioned . It looks like the 321AA might avoid the click., because of the NBR Noise Block Rubber. Or maybe Zero has a fin model like thanks, Michael C. Architect [contct info removed]
A: For the instances where you need the maximum potential deadening of sound from the automatic door bottom I would discourage you from considering any Pemko models and consider only the Zero 367AA models as seen here:
Click Here
You will immediately notice how much more significant the amount of the surface area of the sounding retarding rubber incorporated into the automatic door bottom. You explain this is a meditation room and I would consider no model other tan the Zero 367AA, unless the significant additional cost prevents this option. If this is the case, the Pemko will work well, but I cannot guarantee it working well "enough". If time is a commodity you have supply of, I would test the Pemko first.
Regarding your door closer continuing to close the door, I have no historical data that tells me a door closer will not continue to close this door, although there are low closing force models, but these are considered when you have spring hinges acting as the doors closing device.
The 2212_PK773 might be an excellent option and if you elect to install this item - have the margin under the existing door so as to fit it between your threshold top and the bottom of the door - please do let me know your results.
Regarding the overall noise of a functioning door creates do keep in mind you have the sound of the hydraulic fluid moving in the cylinder, the "clanking" sound a door closer arm will make, the sound of the latch bolt hitting the face of the strike, the door hitting the stop of the frame to take into additional consideration. I know this all as I have studied music and can tell you how unexpected sound pollution is very unwelcome and disruptive to the process whether it be meditation or trying to transcribe by ear Blue 7 by Sonny Rollins. My advice - do all you can within reason to stop the infiltration of sound.