Fiberglass insulation has thermal resistance of 538oC making it suitable to use in variety of ovens that do not require very high temperatures. Due to its lightweight, fiberglass insulation is good when used on lightweight ovens like metallic ovens.
It is relatively cheaper for somebody constructing several ovens since the average price is Ksh. 800 per square metre.
The common thickness of fiberglass available in Kenya is 50mm which is suitable though double layers can be applied for better efficiency. However, most fiberglass suppliers in Kenya sell it in rolls of 18M2, making it cost effective for several ovens.