Sylviera 10x12 ft Polycarbonate Greenhouse
120 sq ft of 4 mm double-wall polycarbonate for under $700.

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Is the Sylviera 10x12 ft Polycarbonate Greenhouse any good?
With 2.7 out of 10, it ranks 16 of 26 greenhouses in our comparison. Strength: twin-wall panels insulate and diffuse light. Weakness: no wind rating published. Best for the most hard-panel space for the money.
120 sq ft of 4 mm twin-wall for under $700. A lot of greenhouse for the money from a brand with no track record yet.
What we like
- Twin-wall panels insulate and diffuse light
- Aluminum frame does not rust
What we don't
- No wind rating published
- No snow load figure
- No warranty term stated
Specifications
| Size | 10 x 12 ft (120 sq ft) |
|---|---|
| Height | 100 in |
| Type | Aluminum and polycarbonate |
| Frame | Aluminum frame |
| Panels | 4 mm double-wall polycarbonate |
| Wind rating | Not published |
| Snow rating | Not published |
| Weight | ? |
| Warranty | Not stated |
| Amazon rating | 4.2 (202 ratings) |
Source: the product page on Amazon.com, checked 28 Oct 2026. Wind and snow ratings are the maker's own claims.
Score: 2.7 out of 10
Worked out from the specs above. Missing figures score zero.
Sylviera 10x12 ft Polycarbonate Greenhouse: common questions
Is the Sylviera 10x12 ft Polycarbonate Greenhouse any good?
With 2.7 out of 10, it ranks 16 of 26 greenhouses in our comparison. Strength: twin-wall panels insulate and diffuse light. Weakness: no wind rating published. Best for the most hard-panel space for the money.
How big is the Sylviera 10x12 ft Polycarbonate Greenhouse?
It covers 10 x 12 ft, about 120 sq ft. It stands about 100 inches (8.3 ft) tall at the peak.
Can the Sylviera 10x12 ft Polycarbonate Greenhouse handle wind and snow?
The listing publishes no wind rating for this model. We found no snow rating, so brush snow off the roof after every snowfall.
What base does the Sylviera 10x12 ft Polycarbonate Greenhouse need?
Build it on a level, square base: a concrete slab, pavers, or a timber frame on gravel. Bolt or screw the frame down at every corner. An uneven base twists the frame, and then the panels pop out in the first strong wind.
How long do the panels on the Sylviera 10x12 ft Polycarbonate Greenhouse last?
It has 4 mm double-wall polycarbonate. Polycarbonate with a UV coating lasts ten years or more. Twin-wall panels trap air, so they insulate better than single clear sheets and spread the light more evenly.
What warranty comes with the Sylviera 10x12 ft Polycarbonate Greenhouse?
We found no written warranty term on the listing. Amazon's return window still applies, so check every part when the boxes arrive.


