Other Accessories

Ventilation - maintain the correct temper

Hot, damp and stagnant air is the worse thing you can have in your greenhouse. It causes pests and diseases to build up. Ventilating your greenhouse ensures a good supply of fresh air essential to healthy plant growing.

The average temperature of the plants in your greenhouse is about 6 degrees higher than the ambient air temperature. It is therefore absolutely essential to keep the temperature down and shade plants or they will "burn".

A tomato will develop a green tip if the temperature goes above 35 degrees.

Windows

As hot air rises and leaves your greenhouse via the windows in the roof. Cooler air will replace it. To assure enough fresh air can get into your greenhouse, it is advisable to install a louvre vent in one of the bottom pares of glass.

A slatted louvre is designed in such a way, as to allow fresh air in without causing a draft. This ensures a constant supply of fresh cool air to take the place of the hot damp air as it escapes.

Louvre Windows

Secures a good supply of fresh air into the greenhouse. The horizontal slats ensure that you don't get a draught in the bottom of the greenhouse which will damage the plants.

The louvre can be ordered in following sizes:

  • 70 cm - Compact Plus, Solargrow, Premium, Royal & Sunline

Order code - JLW1

  • 60 cm - Gardiner

Order code - JLW2

Before you order a louvre, you will have to decide where in the greenhouse you want to mount it to get the right size.

Automatic Window Opener




It is important to maintain a constant temperature in your greenhouse that suits your plants. You can adjust the temperature by opening and closing the windows but this can be difficult to do if you are not at home all day.

One solution to this would be to install automatic window openers on all the windows in your greenhouse. They can be adjusted to open and close within a temperature range between 16 and 25 degrees.

They operate by using the heat from the sun. As the black cylinder is heated the plantoil inside expands and pushes up a piston which opens the window. As the cylinder cools the piston closes the window.

An environmentally friendly solution. No need to use electricity. Remember to remove the cylinder during the winter otherwise it might suffer frost damage. Univent automatic window opener with double spring

  • Aluminium
  • Suitable for greenhouses with glass and polycarbonate
  • With double spring which pulls the window shot
  • Adjustable to open and closing between 16 and 25 degrees
  • Opens the window up to 48 cm
  • Can lift up to 7 kg
  • Has a "click-system", which means that that it is easy to dismantle if for example a storm is coming

This window opener is the best choice for greenhouses with polycarbonate. A window with polycarbonate is not as heavy as a window with glass, and when the wind blows the Ventomax and Spiro cannot close the window, but Univent can using the double spring.

Order Code - JAV01

Automatic Louvre Window Opener

Sesam automatic window opener for louvre

  • Aluminium
  • Especially designed for louvre windows
  • Adjustable to open and close between 16 and 25 degrees

Order Code - JALWO1

Spare Automatic Window Cylinder

Loose cylinder for window openers

If you forget to remove the cylinder in the winter and it is damaged, you can buy the cylinder loose, so you don't have to buy a whole new window opener.

Fits all window openers.

Code - JAVOC1

Plant Support

Plant rings

A flexible option to support your plants all over the greenhouse.

The plant rings are fastened with a simple grib into the frames. Tie a cord from the plant ring to the plant to give the desired support.

Order Code - JPR20

Single Hinges

Angle hinges

Like the plant rings the angle hinges can be mounted all over your greenhouse to support your plants.

The angle hinges are mounted into the frames with special bolts which are bought separately.

The angle hinges can manage a heavier weight, and are better than plant rings for painted greenhouses.

Order Code - JAH20

Coldframe Kits

Single Coldframe

  • Aluminium framing
  • 4mm polycarbonate panels
  • Opening top to allow easy access
  • Adjustable arm to keep top open
  • Easy assembly with unique locking system that requires no nuts or bolts

Order Code - JCFS1

Double Coldframe

  • Aluminium framing
  • 4mm polycarbonate panels
  • Opening top to allow easy access
  • Adjustable arm to keep top open

Order Code - JCFD1