Underlayment
AISLATION FOR HUMIDITY AND NOISE - QUIET WALK FOAM
Consist of a 3.5mm Thick Layer formed by plastic in the superior part and a layer felt highly pressed towards the bottom that is recommended in most buildings and condominiums since absorption acts as of sound (to isolate the noise downwards) the value
is $50 for a roll of 100SQFT ($0.50 per SQFT).
AISLATION FOR HUMIDITY - FOAM & FILM
Consist of a 2mm thick layer formed by plastic and foam to separate the humidity and to absorb absence that can contain the base of the installation site (cement, ceramic, etc). The sale price is $40 for a 200sqf roll ($0.20 per sqf).

AISLATION FOR EXTREME HUMIDITY and NOISES - QUIET WALK CORK
Consist of a cork layer (cork) that acts isolated to noise like the previous insulator but for greater levels of isolation. This product is required in the condominiums or buildings that have strict rules of the noise level.
The value of sale is $200 for a 200 SQFT roll ($1,00 per SQFT).