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1. What is STC?
2. What is the STC rating of a standard interior single stud wall?
3. How does QuietRock save money in condo party wall construction?
4. How does QuietRock compare to soundboard or batts?
5. How does QuietRock work?
6. How long have QS construction products been around?
7. How many years will this product last after I install it?
8. What are the differences in installation between QuietRock and regular drywall?
9. What is the failure rate of resilient channels (RCs)?
10. What is the STC I will get from installing QuietRock as a retrofit over a single stud wall?
11. What size or sizes does QuietRock come in?
12. Does QuietRock work with metal and wood studs?
13. How do I use QuietRock over a concrete wall?
14. Is QuietRock Fire Rated?
15. If I have a wall at STC-34 and I add mass loaded vinyl to it that has an STC of 27, what will my final STC be?
16. What is IIC and what are the ratings for QuietRock and QuietWood?
17. Can’t I achieve strong sound reduction on a wall or ceiling by applying two layers of standard gypsum board?
18. How long does it take for QuietSeal to dry?
19. How do I deal with large openings in my wall, for example a water supply box for my refrigerator’s icemaker or washing machine? In-wall speakers? Large electrical junction box?
20. Do you have building Department Approval for your Floor/Ceiling assembly?
21. What is the fire rating of your Floor/Ceiling Assembly?
22. How heavy is the QuietHome Floor/Ceiling Assembly compared to standard assembly?
23. You show the QuietHome Floor/Ceiling Assembly with an 18” open web truss. What else can I use instead of a truss and how will it perform?
24. Where did you do your acoustic testing and is the lab any good?
25. What is the coverage of QuietCoat or QuietCar?
26. What is the STC of a typical (industry average) hollow interior door and a solid interior door?
27. What is the range of STC values for typical (industry average) single-pane and dual-pane windows?
28. If I want to reduce the noise through a partition by 75% (to my ear), what STC increase is that?
29. How do I get more info?
30. Where is Quiet Solution located?
1. What is STC?
“STC” is the acronym for Sound Transmission Class. A measure of transmission loss through partitions such as walls or floor/ceilings. The higher the number the better.
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2. What is the STC rating of a standard interior single stud wall?
30 to 34
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3. How does QuietRock save money in condo party wall construction?
Using QuietRock 525 on one side of a single stud wall produces an STC 51, thus allowing the builder to reduce wall thickness from double-stud to single stud construction. The result: reduced labor, materials, and recovery of significant floor space (up to $2500 per condo).
Significantly reduced litigation and warranty risk as QuietRock is the first product that cannot be shorted out by contractors or homeowners, so the designed STC value will be maintained throughout the life of the property.
QuietRock QR-525 is the least expensive and most reliable solution to achieve a code compliant STC50+ wall compared to any other method.
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4. How does QuietRock compare to soundboard or batts?
A single layer of QuietRock adds 10 to 26 STC points to a single stud wall (depending on model) versus 2-4 points for batts or sound barrier board.
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5. How does QuietRock work?
QuietRock and QuietWood products contain viscoelastic polymers in a constrained-layer-damped structure that efficiently convert acoustic energy to heat energy, which you can’t hear.
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6. How long have QS construction products been around?
Since 2003, with over 10,000 successful installations in single-family, multi-family and commercial projects.
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7. How many years will this product last after I install it?
Indefinitely.
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8. What are the differences in installation between QuietRock and regular drywall?
QuietRock is installed and finished just like regular drywall. Some models (such as 530 and 545) needs to be cut with any jigsaw, circular or rotary saw, other models (510 and 525) score and snap like regular drywall. Installation labor costs typically run the same as standard drywall with QuietRock 525, as it scores, snaps, and hangs just like regular drywall. QuietRock 525 and 530 also weigh about the same as standard drywall.
Attach QuietRock panels directly to wood or metal studs, just like regular drywall. No channels or clips are used. NO SPECIAL TRAINING IS REQUIRED.
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9. What is the failure rate of resilient channels (RCs)?
The field failure rate of RC’s due to shorts, install issues, and owner improvements has been demonstrated to be 90% in many projects. QuietRock eliminates the need for failure-prone RCs.
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10. What is the STC I will get from installing QuietRock as a retrofit over a single stud wall?
Simple installing 530 on one side of a wall raises STC rating to STC 53 (using the lower cost 525 results in a 49, and 510 results in a 47). This is an economical solution for making noisy apartments, bedroom walls or home theaters quiet.
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11. What size or sizes does QuietRock come in?
Most models are avialable in 4 sizes: 4’x8’, 4’x9’, 4’x10’, and 4’x12’.
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12. Does QuietRock work with metal and wood studs?
Yes, QuietRock works equally well on both metal and wood stud walls.
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13. How do I use QuietRock over a concrete wall?
First “fur out” the wall with studs or furring strips. Then attach QuietRock to the strips/studs.
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14. Is QuietRock Fire Rated?
QuietRock 530 and 525 meet Type X and are fire rated as 60 minute assemblies (full scale ASTM E-119). In addition, some models are also UL listed in the US and Canada.
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15. If I have a wall at STC-34 and I add mass loaded vinyl to it that has an STC of 27, what will my final STC be?
The myth is that you will have an STC 61 wall. The reality is your wall will be STC 40 to 43. STC ratings do NOT add up. This approach only added some mass to an existing wall assembly. While many claim this “limp” mass is somehow much better, the lab test results on FULL assemblies show otherwise. Mass loaded vinyl represents the most expensive method of adding a few STC points to a wall.
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16. What is IIC and what are the ratings for QuietRock and QuietWood?
“IIC” is the acronym for Impact Insulation Class. It measures how noise from footsteps and other floor impacts travels through floor/ceiling assemblies. The ratings are based on entire assemblies, not individual products.
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17. Can’t I achieve strong sound reduction on a wall or ceiling by applying two layers of standard gypsum board?
The advanced technology in QuietRock 525 and 530 provides a reduction equivalent to 8 layers of gypsum in typical assemblies.
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18. How long does it take for QuietSeal to dry?
Quiet Seal is formulated to stay moist (hence resilient) for decades. Effectively, it never dries. Other acoustical sealants that become hard over time and can short-circuit a wall or ceiling
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19. How do I deal with large openings in my wall, for example a water supply box for my refrigerator’s icemaker or washing machine? In-wall speakers? Large electrical junction box?
For smaller j-boxes, use QuietPutty. For large openings, create a box out of QuietRock to surround the offending noise sources inside the wall.
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20. Do you have building Department Approval for your F/C assembly?
The assembly has been tested by approved labs for fire, structural and sound. Those results are posted on our website and are accepted by all jurisdictions. For example, in Los Angeles, we have he LA Research Report Number.
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21. What is the fire rating of your Floor/Ceiling Assembly?
The assembly is rated at 1 hour.
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22. How heavy is the QuietHome Floor/Ceiling Assembly compared to standard assembly?
The QuietHome assembly is approximately half the weight of conventional assemblies that use poured gypsum concrete.
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23. You show the QuietHome Floor/Ceiling Assembly with an 18” open web truss. What else can I use instead of a truss and how will it perform?
The Floor/Ceiling Assembly works as well with I-Joists (TJI).
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24. Where did you do your acoustic testing and is the lab any good?
NRC (National Research Council of Canada), the most advanced architectural acoustics test facility in the world.
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25. What is the coverage of QuietCoat or QuietCar?
Spray or brush 40 sq.ft. per gallon per 1mm layer, or 13 sq.ft. per gallon for 3 layers.
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26. What is the STC of a typical (industry average) hollow interior door and a solid interior door?
Hollow doors offer little sound isolation at about STC 15. Solid doors perform at STC 25-27. A quiet door should be at STC 40+.
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27. What is the range of STC values for typical (industry average) single-pane and dual-pane windows?
Single-pane windows provide little sound protection at STC 20-27. Dual-pane windows generally produce STC 25-34. A quiet window should be at STC 40+.
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28. If I want to reduce the noise through a partition by 75% (to my ear), what STC increase is that?
You need to add about 20 STC points to your existing partition (ie wall, window etc.) to “hear” a 75% reduction in noise.
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29. How do I get more info?
Professional architects may request an Architectural Binder by completing the Professional request form.
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30. Where is Quiet Solution located?
Our factory and corporate offices are located in Sunnyvale, CA, however we have over 400 stocking dealers in the US and Canada.
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