Often asked: How Thick Greenhouse Plastic?

Can you use 6 mil poly for a greenhouse?

Our clear greenhouse plastic is a TRUE 6 mil versus a rounded up approximation of 6 mil. It is excellent for germination and early promotion of growth. In high UV areas in the US, use 6 mil 4 year clear.

What size plastic do I need for my greenhouse?

The width of the greenhouse and its height, plus a foot in every direction, will be the size of the plastic you’ll need for each of the end walls. So if your height is 5 feet and your width is also 5 feet, you’ll need a 7′ x 7′ piece of plastic for both ends.

What is the best plastic for a greenhouse?

Polycarbonate plastic is considered as one of the best greenhouse covering materials. This plastic is a twin or double-wall made of Polyethylene plastic. If maintained properly, this type of covering can last for ten years or more. Year-round gardening is easy because of the heat and humidity-retaining feature.

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How thick should polycarbonate be for a greenhouse?

As a rule of thumb, 8 mm and higher will do fine for any type of weather. If you don’t get many icy-cold nights or if you plan on heating your greenhouse throughout the cold season, you might be good with thinner panels. 4 mm thick panels are primarily used as a “season extender” not necessarily for year round growing.

Will any plastic work for greenhouse?

What plastic is best for a greenhouse? Polyethylene plastic is an affordable covering for greenhouse structures. It’s easy to install and is much less expensive than glass panels or rigid plastic sheets. It is the most popular choice among small commercial and home growers.

Should a greenhouse be in full sun?

To give your plants and seedlings the best chance, you should set your greenhouse up somewhere that gets lots of sunshine, plenty of natural daylight and that is protected from harsh winds and frost pockets. Some gardens have areas that are damp or prone to surface water, due to poor drainage and lack of sunlight.

Can I use 4 mil plastic for greenhouse?

Three or 4 mil film is common for one year use on narrow tunnels and overwintering houses. Greenhouse grade material, only available in 6 mil thickness, is best for multi- year applications.

Can you use white plastic for a greenhouse?

Use 55% white plastic sheeting for more light transmission or opaque white film for more intense diffusion. Translucent white greenhouse plastic will eliminate hot or cold spots by diffusing the light to provide for a consistent and steady temperature across the greenhouse.

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What is the best roof pitch for a greenhouse?

A greenhouse roof needs to have enough slope to prevent leaks and dripping condensation. We recommend a 4:12 roof pitch as a minimum. A lean-to greenhouse extending 6′ from your house needs a minimum 8′ of height, with an additional 4″ for each additional foot the greenhouse extends from the building wall.

Is a plastic greenhouse any good?

To conclude, yes, mini plastic greenhouses are good for many purposes. If you have limited space in your garden, they provide a convenient alternative to bulkier glass greenhouses. They are also much lighter, easy to move around, and more affordable.

What can I grow in a plastic greenhouse?

Click on a plant name to find varieties to grow.

  • Aubergines.
  • Broccoli (germinating seeds in early spring)
  • Brussels Sprouts (germinating seeds in early spring)
  • Cabbage (germinating seeds in early spring)
  • Cauliflower (germinating seeds in early spring)
  • Chillies.
  • Sweet Peppers.
  • Courgettes (before planting out)

How do you secure a plastic greenhouse?

#1 – Secure a greenhouse with fixings pegs or stakes

  1. #3 – Use reinforcement patches.
  2. #4 – Screw a greenhouse to a fence.
  3. #5 – Stack paving slabs around the base.
  4. #6 – Load the bottom shelf with paving slabs.
  5. #7 – Keep a plastic greenhouse in a sheltered spot.
  6. #8 – Tape the area where the PVC attaches to metal frame.

Is corrugated plastic OK for greenhouse?

Reduced UV Transmission: Corrugated polycarbonate is opaque to ultraviolet light at wavelengths below 385 nanometers. UV protection will help prevent fading and discoloration of interior décor as well as protect tender seedlings and greenhouse crops.

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How long does a polycarbonate greenhouse last?

Polycarbonate has a lifespan of about 10 years. Factoring this into your long-term investment plans is important when choosing a greenhouse covering. Less expensive covering options may require more repairs that will add up to higher costs.

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