Due to some manufacturer\'s pricing restrictions, we are not allowed to advertise our best prices online.
Efloors.com FREE SHIPPING Sale!Free Shipping On Area Rugs!Free Samples!Yellow Tag Sale Event
You are here: Accessories > Underlayment > Underlayment for Laminate Flooring > Mohawk Silent GUARD Underlayment (100 SF Roll)

Mohawk Silent GUARD Underlayment (100 SF Roll)

Mohawk Silent GUARD Underlayment (100 SF Roll)

Product ID: 8864

Availability: Typically Ships In 3 - 5 Business Days
Regular Price: $79.99
Click to chat


Category: Underlayment
Manufacturer: Mohawk
High Density Cross Linked Polyolefin Foam and Polyethylene Film
4 oz. / sf
3.8 ft (45.5")
4.39 ft. (52.75")
2 mm (.08"), moisture barrier - 6 mil
6 lbs/ft.
3.19 (ft2 - F-hr/BTU - in.)
Tensile Strength psi
W 64, L 78
Overlapping Moisture Lip
2" minimum
Shore Hardness
45 +/- 4
Elongation to Break
W 160, L180
Compression Set % of original thickness
Compression Strength psi
Temperature Tolerance (F)
+178 to -148
Impact Sound Transmission
ASTM E492, ASTM E989-89, Impact Insulation Class (IIC) = 60
Standard Classification for Determination of Impact Insulation Class designed to measure the impact sound transmission performance of a floor-ceiling assembly, in a controlled environment.
Sound Transmission Loss
ASTM E90-99, ASTM E413-87, Sound Transmission Loss (STC) = 53
Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Classification for Rating Sound Insulation to measure the sound insulation properties for the text specimen, in a controlled environment.

Radiant Heat Subfloors and Underlayment

The addition of in floor radiant heating systems has increased dramatically in recent years. As you may know, not all types of hardwood floors can be used over a subfloor with a radiant heat or hydronic heat systems installed. It is also difficult to find information on which flooring underlayment to use over a radiant heat.

Efloors.com has done its research on this, and has determined that the Mohawk Silent Gard underlayment, has little effect on the heat transference from the radiant heat subfloor to the top of the flooring surface. Because of it's open cell technology, they allow moisture and heat to transfer to the upper flooring layer. As long as the surface temperature of the concrete does not exceed 85 degrees F, you will not compromise the underlayment's effectiveness.

The moisture barrier component of the Mohawk Silent Guard is about 1.5 mm thick, not enough to prevent heat transfer through the vapor barrier. Also, for an underlayment to be effective for this application, it must not have an R value greater than 2.5.

However, Visqueen is normally about 6mm thick and may prevent a portion of the heat from these systems from transferring to the upper flooring layer. Also, any closed cell underlayment may block some heat transfer from radiant heat subfloors.







  • Silent GUARD is a sound absorbing underlayment with attached moisture barrier.
  • Silent GUARD reduces Reflected room sounds.
  • Especially made for Mohawk Laminate flooring.
  • Usage of Mohawk underlayment is required for optimal performance of the flooring and to ensure compliance with the product warranty.
  • Includes adhesive strips which make installation easy.
  • Silent GUARD is most effective when used on a smooth subfloor.
  • Dampens foot traffic noise and provides a more comfortable floor for walking.  Specified by architects and designers for noise reduction in apartments and condominiums.
  • Mold and mildew resistant, and non-allergenic
  • Adds insulation value to floor system
  • Adhesive tape included
  • Silent GUARD is sold in 100 sf rolls.


Lay the underlayment on the floor with the Mohawk Logo facing up. The direction of the underlayment should be parallel to the direction of the laminate floor. For the first row of laminate the underlayment should be placed so that approx 1 inch overlap to all perpendicular walls. Place the following rows next to the 1st on top of the low moisture barrier flap. Remove the adhesive slip and fold back the upper flap onto the second row. Make sure the underlayment fits together tightly. Do not leave gaps. On the last row place the underlayment 1 inch up against the wall. To join rolls on the short side of the underlayment use a moisture resistant tape to connect the two pieces so that water cannot penetrate the underlayment.