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Polycarbonate Greenhouse Cost - PC Sheet vs Film Cover
Polycarbonate greenhouse cost against a film cover: PC sheet lasts years where film is replaced every second season, and it holds heat better. .
TEL：+86 191 5068 3942
  • Features
Exterior of a multi-span PC sheet greenhouse with aluminium glazing bars and cooling pad units
Isometric drawing of a full PC board greenhouse showing wet curtain, axial fan and main columns

What a PC Sheet Greenhouse Costs to Run:

The first price of a PC sheet house is higher than a film house on the same span, and that is the figure most buyers look at first. The figure that decides the cost of the house over ten years is a different one. A film cover is normally re-covered about every second season, and every re-cover means new film, a crew on the roof and a few days when the crop is exposed. A hollow PC board is not re-covered on that cycle at all. Put the two side by side and the film house keeps asking for money while the PC house has already been paid for.
 

The Cover Itself - Hollow PC Board:

The board we use is a double or triple wall hollow transparent sheet, or a single wave sheet where the roof is curved. The sealed air gap inside the board is what makes the difference: it holds light and heat at the same time, and it keeps holding them when a single layer of film has already gone slack in the wind. Sheet is fixed into purpose-made aluminium profiles with sealing strips rather than screwed straight to the steel, which is how the cover stays tight and water stays outside.
 

Heat Loss, Impact and Fire:

Three points separate PC sheet from film in daily use. Heat: the thermal conductivity of a single film layer is much higher than that of a hollow PC board, so a film house loses heat faster and the heating bill follows it. Impact: a PC board does not break the way glass does; it stays serviceable at -100 degrees Celsius and does not soften at 135 degrees Celsius, which is why hail, a dropped tool or a badly parked trailer usually costs you nothing. Fire: the board is self-extinguishing and does not spread flame, where a burning film cover can run the length of the house before anyone reaches it.
 

Where the Cost Difference Shows Up:

The economics of PC sheet are strongest on a house that runs all year and keeps a crop in it through the winter. For vegetable production in a cool region, for flower and seedling houses where a stable room matters more than raw light, and for any site where re-covering a film house would interrupt production, the PC house pays the difference back through lower heat loss and no re-covering cycle. On a short-season house in a mild climate, the film greenhouse range is still the cheaper way to cover the same ground, and we will say so when that is the case.
 
Overseas customers at the Bozong greenhouse factory gate and in the meeting room

Sizing and Ordering a PC Sheet House:

You can look through the polycarbonate sheet greenhouse models we build, compare them against the wider commercial greenhouse models, or read more about our greenhouse factory first. Tell us the span and length you need, the crop you plan to grow and your local conditions - winter temperature, snow load and wind speed - and we will confirm a layout, the covering and a quotation. Ventilation, cooling and irrigation for greenhouses are quoted together with the structure. Call +86 191 5068 3942 or send an E-mail to sales@cngreenhouses.com.
 
Figures on protected cropping and greenhouse covering performance are published by industry bodies such as the NGMA, and commercial horticulture news is reported by trade media such as Horticulture Week.
 

Frequently Asked Questions:

Q: Why does a PC sheet greenhouse cost more than a film greenhouse at the start?
A: The board itself costs more than film and it is fitted into aluminium profiles rather than stretched over the frame. Against that, a film cover is normally replaced about every second season, and each re-cover costs new film, labour and a few days of production. Over a ten-year run the PC house is usually the cheaper of the two.
Q: How often does the PC sheet need to be replaced?
A: It is not on a two-year re-covering cycle like film. The board is a rigid hollow sheet that stays in its aluminium profiles year after year, so the recurring cost that a film house carries simply does not appear.
Q: Does PC sheet lose more heat than film?
A: No, the opposite. A single layer of film has a much higher thermal conductivity than a hollow PC board, so heat leaves a film house faster and the heating demand is higher. On a house that runs through the winter this is where much of the running cost of a film cover goes.
Q: What happens if hail hits the PC sheet?
A: The board does not shatter, and it stays serviceable from -100 degrees Celsius to 135 degrees Celsius. In practice hail, a dropped tool or a trailer touching the wall damages the cover far less than it would glass or a stretched film.
Q: Is there a case where film is still the better choice?
A: Yes. On a short-season house in a mild climate, where the crop is not grown through the coldest months, film covers the same ground for less money and we will recommend it. PC sheet earns its price on houses that run all year or through the winter.
Q: Can I get a quotation for both coverings on the same house?
A: Yes. Send us the span and length, the crop you plan to grow and your local winter temperature, snow load and wind speed. We will price the same structure with a PC sheet cover and a film cover so the two can be compared on one page.

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