Coldframe Greenhouses

Coldframe Greenhouse - Paul Boers Inc.Paul Boers has manufactured many gothic coldframes over the years, to become a long time favorite for nursery and seasonal growers. By providing an easy to assemble structure, at a low cost investment, the coldframe greenhouse is an excellent purchase that will see a quick payback. It has been designed to cope with condensation run-off, shed snow and withstand harsh conditions, which allow it to save growers money on heating thorugh out the cold winters.The coldframe greenhouse is an ideal choice for a wide range of growing. Whether for long term use or for a temporary selling structure, the Paul Boers gothic coldframe is a very versatile, practical, and affordable structure.


  • 20′ width
  • 4′ or 5 ‘ arch spacing


  • 1 ½” dia. Galvanized steel anchor posts, arches and center peaks, swaged and drilled for easy assembly
  • 3 runs – 1″ dia. purlins, pre-drilled
  • 8 wind braces – 1 ¼” dia.
  • End arches and end peaks are 1 ½” square for easy framing
  • All required fasteners are included

Gable Ends

  • 1 ½” square tubing with double poly or polycarbonate covering
  • Includes all necessary mounting brackets, fasteners and anchor posts, polylock and vinyl angle for end arches

All required fasteners are included.


  • Inflation kit
  • polyethylene film, clear or white opaque
  • M.G. Wire polylock with fasteners
  • Aluminum base with polylock
  • M.G. polylock installed on 2 end arches
  • M.G. polylock and vinyl angle on 2 end arches
  • Set of gable framing – 1 ½” square tubing
  • 4′ x 8′ hinged door or 8′ x 8′ double doors
  • Polycarbonate covered gable set with M.G. polylock and vinyl angle installed
  • Double poly covered gable set with steel framing and M.G. polylock
  • Fans and Shutters

Caring for your poly house

Always be sure that your poly is secured properly onto your greenhouse. Ensuring any cuts or tears are taped up leaves no opportunity for wind damage to greenhouse and/or crops.

Points of care for winter

  • Before winter ensure your double poly cover is properly inflated so snow and ice can readily slide off the roof.
  • If you choose not to heat all winter long, consider heating only when there is a snowfall or ice storm. Do not let ice accumulate on the roof.
  • Should there be a risk of damage due to heavy snow on house, cut the poly with a knife and take the stress off of the structure.

Points of care for winter

  • Poly expands or contracts as temperature changes. Periodically check that your poly is fastened securely and check for proper inflation of air between the two layers.

The poly on your greenhouse should last 4 years or longer if you take these precautions and care. If you find tears or small holes be certain to patch them immediately with a poly patch tape or builder’s tape to maintain the seal.