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2. Sound transmission class - Wikipedia

   en.wikipedia.org/wiki/Sound_transmission_class

   Prior to the STC rating, the sound isolation performance of a partition was measured and reported as the average transmission loss of over the frequency range 128 to 4096 Hz or 256 to 1021 Hz. [8] [9] This method is valuable at comparing homogeneous partitions that follow the mass law, but can be misleading when comparing complex or multi-leaf ...

3. Magnesium oxide wallboard - Wikipedia

   en.wikipedia.org/wiki/Magnesium_oxide_wallboard

   Magnesium oxide wallboard (10 mm thickness) Magnesium oxide, more commonly called magnesia, is a mineral that when used as part of a cement mixture and cast into thin cement panels under proper curing procedures and practices can be used in residential and commercial building construction.

4. Laminate flooring - Wikipedia

   en.wikipedia.org/wiki/Laminate_flooring

   This is an accepted version of this page This is the latest accepted revision, reviewed on 8 December 2024. Type of manufactured floor covering This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Laminate flooring" – news · newspapers · books ...

5. Sound reduction index - Wikipedia

   en.wikipedia.org/wiki/Sound_Reduction_Index

   The Sound Reduction Index is expressed in decibels (dB). It is the weighted sound reduction index for a partition or single component only. This is a laboratory-only measurement, which uses knowledge of the relative sizes of the rooms in the test suite, and the reverberation time in the receiving room, and the known level of noise which can pass between the rooms in the suite by other routes ...

6. Underlay - Wikipedia

   en.wikipedia.org/wiki/Underlay

   In vinyl flooring or "linoleum", the underlay is the thin layer of plywood that is fastened over the structural subfloor to create a uniform, smooth platform for the sheet vinyl. For laminated wood flooring, the underlay provides a “vapor barrier” to prevent moisture from coming through the floor of the home and then migrating into the ...

7. CDC reveals elevated cancer risk in certain laminate flooring

   www.aol.com/news/2016-02-22-cdc-reveals-elevated...

   Earlier this month, the Justice Department announced that Lumber Liquidators had been sentenced to pay a $13.15 million settlement which included $7.8 million in criminal fines and more than $1.23 ...