Sealing Around Pex


  #1  
Old 05-10-21, 06:56 AM
W
Member
Thread Starter
Join Date: Feb 2006
Location: USA
Posts: 6,911
Received 51 Votes on 46 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: 6,295
Received 319 Votes on 285 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: 70,078
Received 2,956 Votes on 2,667 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: 6,911
Received 51 Votes on 46 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: 28,132
Received 1,563 Votes on 1,405 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: 6,911
Received 51 Votes on 46 Posts
Thanks for the help, everyone.
 
 

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