Types of greenhouse roofing

Any farmer who employs a greenhouse in his production process must carefully consider his choice of greenhouse panels. To do so, a number of variables must be taken into account. will help narrow down the choices. Durability, climate, light transmission and cost-effectiveness are some of the most important criteria.

The most popular materials used to cover greenhouses are polyethylene film, glass, acrylic, and acrylic.

We've listed the many kinds of greenhouse covers below so you can familiarize yourself with them and select the one that best meets your requirements.


Glass is one of the options we discover for a greenhouse roof. For its aesthetic appeal, glass is typically utilized in greenhouses for Garden Centers.

Compared to other, more opaque materials, which likewise darken with time and use, this material permits a considerable deal of light.

However, glass is less prone to break and will continue to transmit the same quantity of light during its entire lifespan. Glass can be more expensive, and there is a chance that glass can break in severe weather or from direct hits like hail. But if properly maintained, glass is a long-lasting and attractive option for a covering.

Acrylic Fabric

Due to their numerous benefits, acrylic coatings are a choice that is becoming more and more well-liked among gardeners. Because acrylic is strong, resilient, and naturally UV-resistant, it won't deteriorate like other plastic glazing materials over time, keeping your greenhouse looking brand-new for 15 to 20 years.

Clear multi-wall panels made of acrylic sheets provide the maximum light transmission and are also more energy efficient. Acrylic is a very simple material to deal with since it is lightweight and extremely flexible. It can be cut to match the greenhouse's structure and, if the arches aren't too deep, bent to fit them.

Acrylic costs more than other glazing materials because glass is more fragile than polycarbonate and needs special attention during construction. It is also more vulnerable to hail damage.

Impact modified acrylic, which is shatterproof and has a constrained impact strength, is a solution for locations where hail is an issue. There are three different acrylic cover thicknesses: 8mm, 16mm, and 32mm.

The polyethylene film

When it comes to greenhouse coverings, polyethylene film is the most popular alternative for growers due to its low initial cost, flexibility, availability in a range of thicknesses, and durability under a variety of weather situations.

Different opacity levels of clear and white polyethylene are readily accessible. The most popular thickness of polyethylene for greenhouses is 6 mm, which includes UV-resistant absorbers good for four years.

It is mounted in a greenhouse in two layers, holding two sheets or a tube in place while an air pocket is created between them to act as a thermal barrier and increase energy efficiency. The plastic is far more vulnerable to wind damage without this air pocket.

Greenhouse polyethylene is very flexible and strong. Polyethylene film can save farmers up to 40% on heating expenditures since it absorbs more heat than glass. Although in theory polyethylene film is more cost-effective, it must be renewed about every four years.


One of the best options for greenhouse roofing is polycarbonate. It is an extraordinarily resilient and affordable glazing material for growers and is suitable for all climates. Both a single-sheet corrugated wave material and a multi-wall structural sheet made of polycarbonate are utilized in greenhouses.

Single wall is great for interior walls while multi-wall offers thermal benefits to prevent heat loss. Although polycarbonate is a wonderful material choice because of its robustness and inexpensive cost when compared to other materials, growers should be aware that it may eventually turn yellow and perhaps fracture. By using polycarbonate, you may extend the life of your product by around 15 years.

How to make a greenhouse more effective?

One of the first steps to boosting efficiency if you want to make the most of your present greenhouse area is to assess how much time and money is spent on daily repetitive operations in the greenhouse.

For instance, simple, repetitive processes like planting plugs, spacing plants, and sleeving may all be mechanized. Automatic machines may need a substantial capital outlay, but the labor savings may more than make up for the expense of the machinery.

By making an investment in a new environmental control system, you may also raise the caliber of your plants and the effectiveness of your greenhouse. An environmental control system will make sure that your systems operate together to give dependable, high-quality outcomes rather of spending time and money manually adjusting environmental parameters like heating, humidity, lighting, and ventilation.

When should improvements be made to increase your greenhouse's effectiveness?

When it takes more effort to recreate ideal growth conditions throughout the year, people are more likely to consider upgrading to a more efficient greenhouse.

It's a good idea to reflect on the last two months as the spring season draws to a close and contemplate any changes you could make for the upcoming season. There is no better time to make these adjustments for the following season than now.

We'll look at a few things in this post that you should think about in order to conserve energy in the greenhouse. If you put most of them into practice, they'll be inexpensive and pay off handsomely in the first season.

Think about the volume of use. Will your greenhouse be used for year-round gardening or only to simulate a tropical setting? The amount of use the building receives at different times of the year will influence the modifications you wish to make.

Adjusting the exhaust fan belt tension

When was the last time you examined the exhaust fan belts for tightness? Fan belts are a simple but important element. And frequently, they are not even properly tensioned.

The possibility of the fan spinning at the proper speed is low when the fan belts are this slack. Belt slippage is to blame for this.

This consumes power and lessens the amount of cooling the fan can produce.

Vue the louvers. The right way to open and close

There are two drawbacks to the pressurized open louvers. The greenhouse overheats if the grower forgets to open the louvers throughout the day since the fan is operating but not removing the heated air.

When the furnace is operating at night and the grower forgets to close the louvers, particularly in the early spring, hot air will leak out all night. It will assist if the louvers are properly oiled. However, it is ideal for growers to spend money installing motors that open and shut the louvers.

Your greenhouse will operate more effectively if there are no gaps

It might be crucial for the louvers to have even a tiny gap. Louvers that are bent may be straightened, which will save a lot of heat. The end walls are another area where a lot of heat is wasted. Small holes can be readily sealed with a few cans of spray insulation.

Reconsider where the glazing material is placed

This is necessary for a greenhouse to be more effective. Polycarbonate is commonly used in greenhouses up to the floor. If you want to optimize light exposure while growing on the ground, this makes a lot of sense. The glazing material below bench level, however, is definitely losing more energy than it is letting in light if you are growing on benches.

Insulating the greenhouse's knee wall, which is below the bench level, is an easy fix. You may accomplish this with cheap bubble wrap that has been coated with foam insulation or aluminum foil.

Keeping the temperature constant

Consider covering your greenhouse with two layers of polyethylene. By doing this, you can keep the inside at a steady temperature and save up to 60% on heating.