Grand Greenhouse Design

Imperial Builders & Supply built their first double poly and steel greenhouses in the 1970s and have since built hundreds of ranges throughout Florida and the Southeast.

GRAND GREENHOUSE designs have been engineered to meet the demands for increased wind loads and taller greenhouses. Significant improvements have been made to enhance strength, longevity and versatility. These designs are also easier to erect, allowing nurserymen the option of building their own greenhouses.

Greenhouse Types

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“Grand” Designs
Price Range	Moderate	Moderate to High	Moderate	Moderate	Moderate to High
Structural Strength	Moderate to Substantial	Moderate	Moderate	Moderate	Substantial
Hanging Capacity	Moderate	Moderate	Less than Moderate	Moderate	Substantial
Gutter Connection Capability	Yes	Yes	No	Yes	Yes
Cooling System Required	Only on Larger Ranges	No	No	Only on Larger Ranges	Only on Larger Ranges
Comments	Most Popular Design	Works Best Under Shaded Conditions	Primarily Used for Vegetable Re-sets	Better Cooling	Also Used for Warehouses/Sheds

Bar Joist Designs			Non-Windloaded Designs
Price Range	High	High	Inexpensive	Inexpensive	Inexpensive
Structural Strength	Substantial	Substantial	Slight	Slight	Poor
Hanging Capacity	Substantial	Substantial	Slight	Slight	Poor
Gutter Connection Capability	Yes	Yes	Yes	Yes	No
Cooling System Required	Only on Larger Rangers	No	Only on Larger Rangers	Only on Larger Rangers	No
Comments	Basket or Vegetable Hanging	Basket or Vegetable Hanging	1st Timer GRHS.	Temporary/Moveable Structure	Do-It-Yourself

All of the “Grand” Greenhouses and Bar Joist Greenhouses offer a variety of steel posts that are engineered based on the height and with of the greenhouse. With additional roof framing added, corrugated and twin wall poly-carbonate roof covering is also available n theses designs. Price range and structural strength is by comparison to each style.

Features & Benefits

1. “V-Trac” galvalume gutters are stronger, larger and more durable than most gutters.   2. All bolts are hot dipped galvanized or stainless steel. Stronger overall design will meet or exceed building code requirements.   3. Reinforced bow to gutter connections. Stronger truss-gutter-post connections.   4. Webbing brackets eliminate truss holes. Trusses are stronger and more rigid. Pipe Purlins combined in webbing brackets. Makes for cleaner stronger connections.   5. Larger stronger posts available for taller sidewalls.   V-trac, all aluminum, 12′ gutters & splices With wire-lock bases included (for poly & shade houses) or without bases (for poly carbonate coverings) 1/8″, 3003 high strength aluminum Eliminates the need for gutter maintenance & replacement for a small increase in price over 14  ga. steel gutters AVAILABLE POSTS 4” X 4” X 9 GA. OR 11 GA. PRE-GALVANIZED OR HOT DIPPED GALVANIZED SQ. TUBING 3-1/2” X 3-1/2” X 12 GA. PRE-GALVANIZED C-POST 3” X 3” X 11 GA. PRE-GALVANIZED OR HOT DIPPED GALVANIZED SQ. TUBING 3” X 3” X 12 GA. PRE-GALVANIZED C-POST 3-1/4” X 2” X 12 GA. PRE-GALVANIZED C-POSTS