Mirador pergola snow load and wind ratings vary by model and size. The four configurations below have snow load ratings of 15.7, 20.8, or 26.6 pounds per square foot (psf), and wind ratings of 78.5, 90.2, or 102 miles per hour (mph). These ratings require professional assembly and anchoring. Before choosing a pergola for a snowy or windy location, check the exact configuration, your local installation requirements, and the operating instructions for your model.
A snow load rating helps you understand a pergola's structural specifications. It does not tell you how many inches of every type of snow the roof can hold—or replace the need to prepare the louvers before winter weather.
Mirador Pergola Snow Load and Wind Ratings by Model
Use the table below to compare four specific Mirador pergola configurations.
| Mirador model | Nominal size | Snow load rating* | Wind rating* |
|---|---|---|---|
| 111DA Pergola — Charcoal | 10' × 13' | 26.6 psf | 102 mph |
| 111S Pergola — Charcoal | 10' × 10' | 20.8 psf | 90.2 mph |
| 80S Pergola — Charcoal | 10' × 10' | 15.7 psf | 78.5 mph |
| 140DA Sky Pergola | 13' × 13' | 26.6 psf | 102 mph |
With professional assembly and anchoring. Values apply to the specific configurations linked above. Check the product details for other models, sizes, and configurations.
Among these examples, our 111DA 10' × 13' and 140DA Sky 13' × 13' have the highest snow load and wind ratings. Whether either is suitable for your property also depends on local requirements, the foundation, anchoring, and the proposed location.
When exploring our pergola collection, compare the specifications for your intended size rather than assuming every pergola in a series has an identical rating.
What Does a Pergola Snow Load Rating Mean?
A pergola snow load rating expresses a load per unit of area. In the United States, it is commonly given in psf: pounds per square foot.
For example, 26.6 psf expresses 26.6 pounds per square foot of area under the applicable rating conditions. It is a structural load specification, not a snow-depth measurement or permission to leave snow accumulating indefinitely.
Keep three distinctions in mind:
- Snow load and snow depth are different measurements. Depth tells you how thick the snow is; load describes its weight over an area.
- A distributed load differs from a concentrated load. A snow load rating does not authorize someone to stand on the louvers or place heavy objects on the roof.
- A product rating and a site requirement answer different questions. One describes the product's stated performance; the other establishes what your particular installation must satisfy.
Avoid multiplying a nominal pergola size by its psf rating to create a general “total weight capacity.” That calculation leaves out the actual rated area, load distribution, and applicable conditions.
How Many Inches of Snow Can a Pergola Hold?
There is no single inches-of-snow equivalent for a pergola's psf rating.
Light, dry snow and dense, wet snow can have very different weights at the same depth. Ice and retained rainwater can also add load. Snow settling may reduce its depth without reducing its weight.
This is why a forecast of several inches of snow cannot, by itself, establish whether the accumulation will stay within a pergola's rating. The National Weather Service explains the relationship between snow density and weight in its snow load guidance.
For a Mirador pergola, prepare the roof according to your model's instructions before snowfall rather than relying on a universal snow-depth threshold.
Should Pergola Louvers Be Open or Closed During Snow?
During snow, open your Mirador pergola's louvers to a vertical position to reduce snow accumulation and roof load. Make this adjustment before snowfall, while the mechanism is clear and operating normally.
Use the instructions for your exact model to identify the correct position. An opening-angle specification is a description of the mechanism's travel; it should not replace the winter operating instructions.
If your pergola has a retractable roof, check its specific manual for positioning instructions rather than assuming that retracting and tilting are interchangeable.
What If the Louvers Are Already Frozen?
Do not force the crank or activate a roof mechanism blocked by frost or ice. If snow has already accumulated and prevents normal operation, do not try to use the mechanism to dump the load.
Keep people away from the affected area and contact our support team for guidance. Visible bending, displaced components, or movement at a post base calls for an assessment before further use.
Never climb onto the louvers or stand beneath the roof to push accumulated snow off from below. Any necessary snow removal should follow the model's instructions and be carried out safely by a qualified professional when access or structural condition is a concern.
How to Prepare Your Mirador Pergola for Winter Weather
Winter preparation starts before snow or freezing rain arrives.
- Find the correct manual. Match the model and size to the documents in our Help Center.
- Check the installation. Have loose connections, damaged parts, or movement at the bases assessed before the next storm.
- Remove leaves and debris. Keep accessible drainage paths clear without climbing onto the roof or disturbing the mechanism.
- Prepare the louvers. Follow the model's snow instructions while the roof is clear and moves normally.
- Prepare accessories and furniture. Remove or secure side screens, curtains, and loose accessories according to their instructions.
- Inspect after the weather passes. Check from a safe location before operating the roof or using the space again.
For routine cleaning between weather events, see our guide to cleaning and maintaining an aluminum pergola. Follow the material and care instructions for your particular pergola.
A closed louvered roof used for rain protection serves a different purpose from the open position recommended during snow. Our guide to whether louvered pergolas are waterproof explains rain protection and drainage in more detail.
How to Read a Mirador Pergola Wind Rating
A wind rating is expressed in mph, but the number needs its installation and operating conditions alongside it.
For the configurations in the table, our published wind ratings range from 78.5 mph to 102 mph with professional assembly and anchoring. These figures do not establish that the pergola is a storm shelter or that every accessory has the same wind rating.
Use the weather instructions for your exact pergola and its accessories. Prepare ahead of the forecast rather than waiting until strong winds arrive to adjust the roof or handle screens.
Does a 102 mph Rating Mean Hurricane-Proof?
No. A published wind speed alone does not establish hurricane suitability or code approval for a particular property.
Site exposure, foundation design, anchoring, the applicable wind criteria, and the installed configuration all matter. A product's mph figure should not be assumed equivalent to a local design wind speed without checking that the measurement basis and conditions match.
Follow local weather alerts and evacuation instructions during severe storms. A pergola's structural rating does not make the area beneath it a safe place to shelter.
Why the Foundation and Anchoring Matter
The ratings above require professional assembly and anchoring because the roof, frame, connections, anchors, and supporting foundation work together.
A heavy pergola still needs a suitable structural attachment. Pavers alone generally do not provide the necessary anchoring base unless the anchors reach an appropriate foundation beneath them. Weighted planters should not be used as the primary anchoring method.
For a deck installation, have a qualified professional assess the supporting structure and attachment method. Fastening post bases to surface decking alone should not be assumed sufficient.
Follow the foundation and anchor requirements in your model's manual. If the site needs a different foundation or fixing arrangement, resolve that design before installation.
Will a Mirador Pergola Meet My Local Snow and Wind Requirements?
Start with your local building department and the exact pergola you want to install.
A location's ground snow load is not automatically the same as the design load required on a particular roof. Roof design and site conditions affect how ground snow information is applied. Nearby higher roofs can also create additional concerns where snow may slide or fall onto the pergola.
The ASCE Hazard Tool provides location-specific hazard information, including ground snow loads and wind data. Have a qualified professional interpret the relevant requirements and compare them with the pergola's supporting documentation.
Before buying, confirm:
- The snow and wind criteria applicable to your address.
- Whether a permit or engineering documentation is required.
- Whether the exact model and size are suitable for the proposed installation.
- The required foundation, anchors, and roof operating conditions.
For additional background on evaluating snow loads, the U.S. Department of Energy's Building America Solution Center provides guidance on managing snow loads on roofs and decks.
Frequently Asked Questions
Can a Mirador pergola stay outside during winter?
A Mirador pergola can remain installed outdoors through winter when the installation is suitable for the location and you follow the model's weather and maintenance instructions. Prepare the louvers for snow, keep drainage paths clear, and avoid operating a frozen mechanism.
Which Mirador pergola has a 26.6 psf snow load rating?
The 111DA 10' × 13' Charcoal and 140DA Sky 13' × 13' configurations in this guide each have a 26.6 psf snow load rating with professional assembly and anchoring. Confirm the specifications separately for any other size or configuration.
Is 26.6 psf enough for a snowy area?
That depends on the requirements for the installation site. Snowfall totals alone cannot establish suitability. Have the applicable roof snow load and the exact pergola configuration reviewed before purchase.
Do side screens increase a pergola's wind rating?
Do not assume they do. The pergola's structural rating does not establish a wind rating for screens, curtains, or other accessories. Follow the compatibility and weather instructions for each accessory.
Should I close the louvers to protect furniture from snow?
Follow the pergola's snow instructions and prepare furniture separately. Our snow guidance calls for the louvers to be vertical to reduce accumulation and roof load. Store cushions and other weather-sensitive items in an appropriate dry location.
Choose Your Pergola With the Site in Mind
Compare the snow load and wind ratings for your exact Mirador model and size, then confirm the foundation and local requirements before installation. Once installed, prepare the roof before winter weather and follow its operating instructions throughout the season.
If you need help identifying your model or finding its manual, visit our Help Center or contact support@miradoroutdoor.com with the model name, size, and order details.
