The fiberglass composite materials used for each application vary to suit the particular design parameters desired by our client. Covers can be built to clear spans up to 20 feet when depth of cover area is not an issue. With the use of fiberglass structural members, virtually any size area can be covered and sealed against escaping emissions. Covers can be designed to cover an entire open area such as aeration tanks or can be designed to cover only the trough areas on the clarifiers, circular or rectangular. Clarifier partial covers generally have integral scum baffles, which are partially submerged to seal off the trough area.  

Requirements which affect the material we utilize are:
1. Load requirements and how load will be applied
2.   Chemical resistance requirements
3.   Fire retardancy requirements (if applicable)
4.   Smoke generation requirements (if applicable)
5.   Weight Restriction requirements
6.   USDA, FDA, or NSF requirements
7.   Insulation requirements
8.   Water  absorption requirements
9.   Limitations of secondary supports
10.   Budget restrictions  

All load requirements and features being equal, Glass-Steel, Inc. fiberglass odor control covers should be lower cost than comparable aluminum covers. Most of our covers utilize a combination of Composolite Panels as the main member. EXTREN Structural Shapes as a support system, and framed Durashield Panels as door panels when doors are required. All hardware is T316 Stainless Steel. The following are a few details of optional components. We also furnish similar systems in non-sealed applications.