Research Methodology Respondents were asked about the current and future market growth rates, as well as market shares by type, by glass fiber type, by resin, by application, by end user industry, by state and by company. Removing the outlier responses, the geometric mean of growth estimates and comoany wise revenue shares generated across various segments were considered, to arrive at the final revenue shares. Revenue shares generated across various segments were further triangulated from the response received from other stakeholders. Methodology Followed for Calculation of Market Shares: Market shares by type, by glass fiber type, by resin, by application, by end user industry, by state and by company were calculated based on the responses received through primary surveys with industry experts, in which the respondents were asked about the market shares of the leading fiberglass players in the United States. The final shares were calculated by taking the geometric mean of the responses gathered from key opinion leaders after eliminating the outliers. Moreover, respondents were asked about the leading companies operating in the United States fiberglass market. Methodology Followed for Forecasting: TechSci Research performed periodical checks on data collected through the surveys with logical checks and analyzed the survey results in SPSS/Tableau Software. © TechSci Research 1313