Sealing Around Pex


  #1  
Old 05-10-21, 06:56 AM
W
Member
Thread Starter
Join Date: Feb 2006
Location: USA
Posts: 6,413
Received 65 Upvotes on 56 Posts
Sealing Around Pex

What method should be used to seal around Pex tubing passing through bored holes in wood?
 
  #2  
Old 05-10-21, 09:52 AM
Z
Forum Topic Moderator
Join Date: Sep 2005
Location: USA
Posts: 6,124
Received 425 Upvotes on 378 Posts
I usually use either caulk or expanding foam depending on the size of the hole.

PEX is pretty resilient, so just about anything should be fine short of really harsh chemicals.
 
  #3  
Old 05-10-21, 09:53 AM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Jersey
Posts: 65,451
Received 4,051 Upvotes on 3,634 Posts
Normally it's not sealed between joists or studs unless you're firestopping.
It does shrink and expand with heat.
Suspension clamps are the best method.

Using expansion clamps video
 
  #4  
Old 05-11-21, 07:00 AM
W
Member
Thread Starter
Join Date: Feb 2006
Location: USA
Posts: 6,413
Received 65 Upvotes on 56 Posts
My application is water tubing passing through floor and base cabinet from basement to kitchen sink.
 
  #5  
Old 05-11-21, 09:01 AM
P
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 27,979
Received 2,229 Upvotes on 1,988 Posts
Holes between floors need to be sealed with fireproof caulk/foam, usually an orange color. The hole through the base of the cabinet can be sealed with an escutcheon plate or regular foam or caulk.
 
Zorfdt voted this post useful.
  #6  
Old 05-12-21, 07:06 AM
W
Member
Thread Starter
Join Date: Feb 2006
Location: USA
Posts: 6,413
Received 65 Upvotes on 56 Posts
Thanks for the help, everyone.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: