Greenhouse Covers

BTL Liners fabricates specialty geosynthetics and greenhouse covers for many different types of gardening structures, including:

  • High tunnel greenhouses
  • Hoophouses
  • Polytunnel greenhouses
  • Wicking bed
  • Raised garden beds

Greenhouses help extend your gardening season, especially in colder climates that normally can’t grow through the winter months. Help increase your crop growth by building a high tunnel greenhouse, hoophouse or polytunnel greenhouse. With many different styles and configurations to choose from, BTL Liners can supply custom greenhouse covering and insulation for whichever style you choose.

Whether you’re a market gardener or an individual hoping to grow food for your family at home, greenhouse covers and specialty geosynthetics from BTL are the answer when wanting to extend your growing season throughout the year.

High Tunnel Greenhouse

A high tunnel greenhouse or growing shelter can be used all over the world to increase crop yield and extend your season. Exceed production standards by choosing greenhouse covers from BTL Liners for your high tunnel greenhouse. BTL’s high tunnel greenhouse covers are available in 8-mil and 12-mil versions depending on the amount of light and UV transmission you desire.


Whether adding a backyard hoophouse for residential gardening or creating a series of them for commercial gardening, BTL Liners has the perfect 8-mil or 12-mil greenhouse covers for the project. A hoophouse is made from a series of large hoops, made from metal, plastic pipe or wood, and covered with clear, plastic woven greenhouse insulation. The greenhouse cover is stretched tight and fastened to the baseboards. A hoophouse generally doesn’t have a heater or ventilation fan, it’s heated by the sun and cooled by the wind.

Polytunnel Greenhouse

A polytunnel greenhouse is a great alternative to a glass glazed greenhouse. A polytunnel greenhouse is ideal for extending the growing season of leafy and delicate greens as well as early vegetables and bedding plants. Clear, woven polytunnel greenhouse covers help retain humidity and warmth while protecting against pests, extreme weather and frost. A polytunnel greenhouse even warms the soil underneath to allow for early planting. Don’t wait to start growing your kale, polytunnel greenhouses are great for early spring vegetables.

Wicking Bed Boxes

In addition to typical greenhouses, BTL Liners also offers raised garden bed liners. Line your wicking bed and raised bed gardening boxes with custom fitted LEED liners from BTL. Raised garden bed liners are an important and necessary layer when creating your wicking boxes as they help protect your garden from unwelcome critters and pests. Raised garden beds are great for growing small crops of veggies and flowers. These types of wicking bed gardens provide good drainage, prevent soil compaction and keep pathway weeds from entering your garden soil. Prevent soil from being washed away or eroded during heavy rains with raised box liners from BTL.

BTL liners provides custom greenhouse covers fabricated to your exact specifications. With the fastest lead times in the industry, you’ll be able to cover your hoophouse, high hoop, wicking bed or polytunnel greenhouse in no time. Contact BTL Liners for more information about our specialty geosynthetics, custom greenhouse covers and insulation.