Did you use additional underlayment under Coretec Plus floorings ?

7 years ago

We are planning to install COREtec Plus XL on concrete floors. Besides using a 6 mil vapor barrier, will installing an additional underlayment provide better support against vertical denting and/or provide better heat insulation ? This is at ground level, i.e. underneath is the foundation.

We are also planning to install COREtec Plus XL Enhanced as floating floor on previously installed vinyl (glued) flooring in our basement. Anything to consider differently here ? Planning the 6 milm vapor barrier here anyway. Many thanks in advance for any pointers.

Featured Answer

SJ McCarthy

7 years ago

For the extra underlayment (if you want to use it) I would highly recommend working with more cork. The Coretec Plus XL has cork underlayment attached to it. Cork can have issues with noise (squeaking...almost like rubbing two balloons together) when put together with another material. If you want to work with another 3mm of underpadding, then I recommend 3mm worth of cork. Anything else and you run the risk of an annoying squeaking issue every time you step on the floor. Cork on cork is well established and should have very few issues.

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Comments (10)

millworkman
7 years ago
What does the Coretec flooring allow if anything for an addition underlayment? If you don't follow there instructions you won't have a warranty so...................
anirbn
7 years ago
It does allow upto 3mm underlayment besides a 6 mil vapor barrier. So my question was directed to the folks who have used an additional underlayment and if so, what did they use ?
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Jess Kay
7 years ago
No advice but I’m looking at Coretec and will make a decision soon!
whaas_5a
7 years ago
Jess, what model and color is the one to the right?
Jess Kay
7 years ago
I will check when we get home but it’s Highlands Oak I believe
anirbn
7 years ago
SJ Mccarthy, this is very helpful. Thanks very much.
Sapphire0905
6 years ago
Jess Kay, what is the mohawk name? Which floor did you choose?
Jess Kay
6 years ago
I believe it was called Perfect Haven. We ended up completely switching to Provenza LVP Moda Collection-Sweet Talker!
ezcamins
4 years ago
Did you end up using the 6mil poly + an additional underlayment for Coretec Plus? We are getting ready to install this in our basement and torn on the additional underlayment.