Should I Add a Double Layer Inflation Kit to My Hoop House?
Double Layer Inflation kits are an upgrade that consist of an extra layer of greenhouse plastic installed with lock channel and spring wire. The space between the two layers of plastic is filled with air using a simple air pump. Filling the space with air creates a pocket of insulation. This pocket of air acts as a barrier between the warmer air within your hoop house and the cooler air outdoors. This helps to reduce condensation and conserve heat inside of the hoop house.
When looking into upgrade, it is important to base the decision on your situation and production needs.
Hoop houses are not typically built to be environmentally controlled. They are meant to be a season expander, not a 4 season greenhouse. The double layer improves this, but only enough to help improve the growing environment into the shoulder seasons.
If you live in a mild climate and only plan to expand with greens and other cold hardy crops, a second layer might not be a necessary expense. While, the grower affected by coastal winds may reap many benefits from the extra insulation.
Other Benefits to Consider
- Reduces Condensation
- Better Snow/Wind Protection
- Increased Temperature
How Does A Double Layer Inflation Kit Work?
Inflation Kits work to create an air pocket between two layers of plastic. This air space provides insulation between the two layers of 6 mil greenhouse plastic. This helps to keep the growing space at a higher temperature and reduces condensation as the indoor air no longer touches cooler outdoor air.
When adding the second layer of plastic, the second layer only needs to cover the top of the hoop house down to the hip boards to provide benefit. Install the plastic into the existing lock channel with addition spring wire.
It is very important that the plastic is tight in order to prevent resistance and damage to the plastic once the air starts filling the space between layers. We recommend that both layers of greenhouse are 6 mil as a thinner plastic may not hold up as well with the installation of an inflation kit.
The air pump collects air from the outside. The outside air is less humid than the air within the hoop house. Blowers that collect air from the inside of the structure can cause moisture to collect between the layers of plastic. This is not ideal and could lead to mold issues.
Installing and Maintaining an Inflation Blower
After both layers of poly have been attached the blower fan is installed inside the hoop house. You will need access to power to run the blower.
- Attach blower with included mounting bracket
- Cut outlet in poly for inlet hose
- Remove extra poly after installing inlet hose
- Connect to power (pulls .42 amps)
- Inflate 6-8 inches
Watch for tears and monitor air pressure with a manometer to extend the life of your double layer.