Shares in Stirling-based Superglass fell 5% after the company said it continues to face challenging trading conditions.
"Sales volumes have been volatile throughout the summer and overall market demand remains depressed," said Superglass, which has been grappling with the consequences of the slowdown in house building that followed the credit crunch.
Official efforts to curb carbon emissions appear to be having a limited effect on sales. "Uptake of insulation measures under the Green Deal initiative remains very low," said Superglass.
With the company yet to see any "sustained increase" in demand from other primary souces, Superglass said: "The resultant impact on volume continues to put pressure on margins".
However, the AIM-listed company said: "The outcome for the financial year just ended is in line with market expectations. Gross cash balances at 31 August 2013 were approximately £8.0m and net cash balances were £5.5m, comfortably ahead of expectations."
In May, Superglass raised £12.9m from investors to stabilise its finances. Belfast-based commodities and agricultural group, W&R Barnett, raised its stake from 22.3% to 26.6%.
Declan Billington, a director of W&R Barnett, was appointed a non-executive director of Superglass Holdings yesterday.
The company announced the resignation, for personal reasons, of Allan Clow as Chief Finance Officer.
House broker N+1 Singer forecasts Superglass Holdings will make a pre-tax loss of £5m on sales of £23.7m in the year to 31 August.
Shares in Superglass Holdings closed down 2.5p at 43.5p.