Despite an already strong run, Interface, Inc. (NASDAQ:TILE) shares have been powering on, with a gain of 26% in the last thirty days. Looking back a bit further, it's encouraging to see the stock is up 67% in the last year.

Since its price has surged higher, given around half the companies in the United States have price-to-earnings ratios (or "P/E's") below 16x, you may consider Interface as a stock to potentially avoid with its 20.4x P/E ratio. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the elevated P/E.

Recent times have been pleasing for Interface as its earnings have risen in spite of the market's earnings going into reverse. It seems that many are expecting the company to continue defying the broader market adversity, which has increased investors' willingness to pay up for the stock. You'd really hope so, otherwise you're paying a pretty hefty price for no particular reason.

Is There Enough Growth For Interface?

The only time you'd be truly comfortable seeing a P/E as high as Interface's is when the company's growth is on track to outshine the market.

Taking a look back first, we see that the company grew earnings per share by an impressive 125% last year. However, the latest three year period hasn't been as great in aggregate as it didn't manage to provide any growth at all. Accordingly, shareholders probably wouldn't have been overly satisfied with the unstable medium-term growth rates.

Turning to the outlook, the next three years should generate growth of 24% per annum as estimated by the three analysts watching the company. With the market only predicted to deliver 11% each year, the company is positioned for a stronger earnings result.

With this information, we can see why Interface is trading at such a high P/E compared to the market. Apparently shareholders aren't keen to offload something that is potentially eyeing a more prosperous future.

The Bottom Line On Interface's P/E

The large bounce in Interface's shares has lifted the company's P/E to a fairly high level. Typically, we'd caution against reading too much into price-to-earnings ratios when settling on investment decisions, though it can reveal plenty about what other market participants think about the company.

We've established that Interface maintains its high P/E on the strength of its forecast growth being higher than the wider market, as expected. At this stage investors feel the potential for a deterioration in earnings isn't great enough to justify a lower P/E ratio. It's hard to see the share price falling strongly in the near future under these circumstances.

Plus, you should also learn about this 1 warning sign we've spotted with Interface.

If you're unsure about the strength of Interface's business, why not explore our interactive list of stocks with solid business fundamentals for some other companies you may have missed.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.