Carpet Smoke Density Rating

Smoke density is reported in terms of maximum optical density based on an arbitrary scale of zero to 800.

Carpet smoke density rating. Astm e662 standard test method for specific optical density of smoke generated by solid materials. The thickness and density of carpet pads affects how the carpet looks and feels. The density of a carpet is one of many factors that determine a carpet s quality and overall performance. Carpet rule 2.

We can now use rule 1 to determine the pile density rating. It is described in the hud fha publication um 44d as follows. And favored by cri is average pile yarn density. Products with a density of 6 to 8 pounds are standard.

Carpet years density rating. It s determined by the carpet manufacturer and it s usually a 1 5 rating. In all instances interior finish materials irrespective of the approved classification of flame spread shall have a smoke density rating of less than 450. Most jurisdictions require a smoke density rating of 450 or less.

Average pile yarn density and the importance of correct pile measurement 275 kb there are various methods of stating relative density specification for pile carpets. If the carpet is for sale it needs to pass this test. The results of this will be either class i or class ii. 12 greater than 3 100.

The second fire rating is the astm e 648 radiant panel test. Despite a common misconception carpet density and carpet face weight are not interchangeable terms that mean the same thing although face weight is one factor used to calculate density. Face weight and density are two entirely different components when it comes to evaluating the. Carpet pad installation costs 0 50 to 1 00 per square foot and the right choice depends on the.

For most areas of the home carpet pads should have a minimum density rating of 6 and be around 3 8 to 1 2inch thick but opt for a slightly thinner and more dense pad around 8 for high traffic areas like stairs and be sure to choose a purpose specific pad if you are carpeting over heated flooring. 5 000 wear rating durability rating. This includes all commercial and residential carpet. The density formula most often used in the u s.

All carpets must have an nbs smoke chamber test of 450 or less or it can not be legally manufactured in the united states. Most soft flooring types need a cushion underneath for ideal use. Thickness ranges from 0 25 0 50. That are essentially the same.