Sealing Around Pex


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Old 05-10-21, 06:56 AM
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Sealing Around Pex

What method should be used to seal around Pex tubing passing through bored holes in wood?
 
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Old 05-10-21, 09:52 AM
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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.
 
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Old 05-10-21, 09:53 AM
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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
 
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Old 05-11-21, 07:00 AM
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My application is water tubing passing through floor and base cabinet from basement to kitchen sink.
 
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Old 05-11-21, 09:01 AM
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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.
 
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Old 05-12-21, 07:06 AM
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Thanks for the help, everyone.
 
 

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