2 DPMs under laminate flooring

[steq184]

Hi
Hope I’ve put this in the correct forum.

I’ve a 4m x 4m Internal concrete floor, its years old but in good condition. I’m going to be laying a laminate floor over it.
I’m going to be putting down a dpm with 75mm of ecotherm for insulation.
My question is should I lay a second dpm on top of the ecotherm before I lay the thin laminate insulation and then the laminate?
My thinking was in case of spillages as the room is going to be a man cave or will I have a problem with moisture getting trapped between both dpms and maybe forming mould.
Im leaning against only using bottom dpm but wanted confirmation.
Thankyou

 

[Deleted member 174758]

One DPM. The function of the DPM is to stop the migration of moisture upwards from the ground beneath. Highly unlikely that you'll ever put enough moisture into a floor that you'll get mould beneath - the laminate would buckle upwards long before you reach that stage!

 

[dazlight]

One will be find. Get yourself quickstep impressive laminate as great if it’s a man cave as water spills with be fine as it has built in hydro seal.