Will a Louvered Roof Work Through a Northeast Winter? Snow Load, Heat and Enclosure
Introduction
Can a louvered roof stay in use through a New York or New Jersey winter? Snow load, heat and side enclosure, explained with two finished Glass Group projects.
By Glass Group · Updated October 26, 2026
A louvered roof is not a summer product.
It's a fair question in October, though. Snow, cold and wind are what kill outdoor seating in New York and New Jersey. So here is how a louvered roof in winter actually works. What it has to be built for, and what it can't do on its own.
We design, engineer, build and install these ourselves. 750+ structures up, 98% of our clients happy. This is what we've learned putting them over real tables.
Can a louvered roof hold snow?
Yes, if it's engineered for the load where it stands. Every louvered roof we build is engineered for at least 65 PSF of snow and 164 MPH of wind. That is our own standard on every job. Where a site calls for more, we engineer more. The number that matters is the one for your county, checked before anything is built.
Snow load is the weight a roof has to carry when snow sits on it. PSF means pounds per square foot. A louvered roof carries that weight on its blades, its beams and its posts, and then down into whatever it stands on.
That last part gets missed. A roof is only as strong as the deck, slab or footing under it. On a rooftop, that is usually a slab nobody has checked. So we engineer the steel under the roof as part of the job. It's in our scope, not a change order.
Why does the snow load change from job to job?
Because the rules change at the county line. Each state and county sets its own snow and wind requirements on top of the general building code. A roof that's fine in one town can need more steel in the next one over. That is why the load gets checked per site, every time.
Rasul Najafzade of Glass Group puts it plainly:
"Every county, state, region has general and own specific codes."
We build across New York, New Jersey and beyond. So we don't start from a guess. We start from our standard, then check the site's own requirements, then engineer to whichever is higher.
If you're an architect or GC, ask for that check in writing before you lock the system. Ask whoever is building it: what load is this engineered for, and who signs off on the steel under it?
Does a louvered roof keep people warm?
No. A louvered roof keeps rain and snow off. Heat comes from heaters. The roof's job in winter is to make heat worth running. Closed blades stop rain and snow coming down on the tables. The structure gives you a place to mount heaters right over the seating.
You can see this at Char, a restaurant in Raritan, New Jersey. We designed, built and installed the operable louvered roof over the terrace. The heaters are mounted on the roof's beams, right over the lounge and dining tables.
Rain comes in, the blades close. Hot afternoon, they tilt open and let the air through. Cool night, the heaters do the rest. The terrace keeps its tables in rain and in August sun, without closing a section.
What makes that work is planning the heaters and the wiring with the roof, not after it. When the same company draws the roof and builds it, the mounting points and the power are part of the drawing.
What about wind and the open sides?
A louvered roof covers the top. Wind comes in from the sides. So in a cold month, the sides matter as much as the roof. There are two common answers: retractable screens that drop when the weather turns, or glass walls that close the space in.
Hang Dog Adventure in Pennsylvania is the screen version. It's an outdoor venue that only earns when people can sit outside. We built a louvered roof over the seating area with retractable screens on the sides. Blades close for rain. Screens come down on the sides when it's needed. Fans hang under the roof too.
The result for the venue: bookings hold whatever the forecast says. On a job like that, the structure isn't decoration. It is the revenue.
Char is the glass version. The terrace has a glazed edge to the street, so the room stays a room.
Which one fits depends on the use. Screens are lighter and fold away. Glass holds heat better and keeps the view. Either way, decide it at design, because both hang off the same posts and beams.
How do you plan a louvered roof for winter use?
Settle four things before you order. Most winter problems with an outdoor structure come from deciding them too late. Here's the order we work in.
1. Check the snow and wind load for the exact site
Get the county's requirement and compare it with the system's engineered standard. Ours starts at 164 MPH wind and at least 65 PSF snow, and goes higher where the site needs it.
2. Check what the roof stands on
Deck, slab, parapet, footing. Somebody has to confirm it carries the load. On rooftops, open the wall or survey it before the drawings are final.
3. Plan the heat and the power with the roof
Heater positions, the electrical feed, lights and motors. Wiring runs inside the frame when it's planned early. Added later, it shows.
4. Decide the sides
Screens, glass walls, or open. That choice changes how much of the winter the space can actually be used.
One company from drawing to install
Every one of those four steps is easier when one company answers for all of it. We draw it and engineer it, including the steel underneath. We build it in our 50,000 sq ft shop in Secaucus, New Jersey. Then we install it with our own crew. Our systems are thermally broken aluminum, and we've been ISO 9001 certified since 2022.
That is why a question about snow load gets one answer, from one number.
Got a terrace or rooftop you want to use past October? Send us the plan. We'll tell you what it needs for your site, and Rasul will take a free 20-minute review of the structure with you.
