Stc Value Of Laminated Glass

Laminated glass also known as impact glass is composed of two layers of glass sandwiching a polyvinyl butyral pvb or ethylene vinyl acetate eva sheet.

Stc value of laminated glass.

Stc ratings chart acoustical performance of glass and wall constructions overall thickness inside construction space outside stc value iso rw 3 1 4 7 24 mm 1 8 0 030 p v b. Data is based on testing 36 x 84 glass to astm e413 87 in an acoustical wall. Laminated glass can add between 30 percent and 50 percent to the cost of the window making it a fairly impractical solution from a cost perspective. Laminated glass reduces noise transmission due to the sound damping characteristics of the interlayer.

Stc ratings are the only way to accurately compare various noise reduction products. Standard glass doors can have an stc between 28 and 35 laminated between 35 and 40 and soundproof glass from 48 to 55 or higher. For windows stc ratings range from 18 to 38. Lamination and double glaze combinations.

High temperature humidity condensation and radiation and is classified 2 b 2 following en 12600 safety glass reducing risk of injury. An stc rating is an instrument measurement of how much noise is stopped. Keep in mind that the stc and oitc rating numbers equate to how many decibels of noise are reduced by the glazings and that s why a higher number is better. Double glazed glass can also provide an stc rating of up to 40 but is typically even more expensive than laminated glass and only used for exterior applications.

6 6mm laminated clear and extra clear low iron contain float glass tempered glass is produced following uni iso en 12150 tested for. The performance data below applies to an insulating unit constructed with two plies of glass and an air or argon filled space. The size of the glass its thickness and whether it is single or double ply will impact the soundproofing values as will the material of the framing around the glass. Oitc is estimated based on this test.

Single sheets of glass or monolithic glass range from 1 8 to 1 2 thick glass and have stc values from 21 to 37. After you select the glazing then you need to determine the stc or oitc rating that the entire system needs to deliver not just the glass. Stc ratings are used for windows doors walls and most building materials. Glass product type and thickness stc rating oitc rating monolithic 3 32 26 1 8 29 31 29 36 33 sealed insulating glass units 1 8 glass air 1 8 glass 28 26 glass air glass 35 28 glass 1 air glass 37 30 laminated glass with 0 030 pvb interlayer 1 8.

The stc ratings allow accurate apple to apple comparisons.