You haven’t really offered enough info to base suggestions on… more pictures.. showing the whole house…an idea how and when you will be using it…will it block natural light from the house interior that would be appreciated in the winter?…is there a view from the deck that will make it more attractive to use often?

And of course some idea of what you want to spend

Winters - as btydrvn mentioned - will you miss the sunlight? I'd try what they call retractable awning. Could be nice also to have a 'clean line' of non-roofed deck, all the width across.

Awntech 12'x10' Maui Manual Acrylic Fabric Retractable Awning, Tan/Teal Multi · More Info

idk for yours - Estes/Twombly Architects: 20" rolls - width of the standing seam metal roof, uncoated copper.

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Thanks all. To answer your questions, this is a summer home, on an island lake, that we cannot access in the winter. So snow load is important, but that’s about it for winter concerns. That said as this is the north side (no direct sun) of the house the interior is already a bit dark and I’m concerned about darkening it further by adding a screen porch. Thank you for the suggestion of a canopy, but we are looking to enclose the space and as other photos will show we are in an exposed location prone to significant winds. Throw ideas out without regard to budget - we want to know what’s possible and will then decide if we can afford it 😉. Thanks again!

We plan to use it for outdoor dining and board games!

Polycarbonate will scratch and discolor eventually. A row of large skylights will work much better and minimize the loss of light on the interior.

I would be concerned about the fragility of any structure.. since you do not have year round access… you also do not appear to need shade?….if you are needing protection from bugs …mainly…I would look for effectively placed zappers to be used as needed…screened enclosures really need to be airtight and sturdy and maintained regularly…not left to the ravages of nature for months at a time… lastly the narrow deck width increases the possibility of accidentally falling against or bumping the screens with furniture… usually there is a time of day when bugs show up.. so the need for protection is limited and in the worse scenarios you just go indoors for a little while if needed

Our summer home is in a similar spot and it is not uncommon to come home to big fallen branches that have torn down fencing and broken wooden outdoor structures…any attempts we made with screening also came with an obstruction of the view that I didn’t like as well…

@RappArchitecture Thank you. We do have concerns about using polycarbonate, even if we find one rated well for discoloration. I don't like the idea of not doing something just because it isn't common, but in this case it feels like a big leap. There are a few photos here on Houzz that do inspire.

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Seba..i can relate…we have our little comforts that create extra work and expense…that we endure to have the lifestyle we love….it is definitely worth it

In addition ….being near so much water …..increases the need a little..but having neighbors with successful solutions gives you the opportunity to benefit from their experience as well…

Sebagolizzy, I’m curious how your project turned out! My husband and I would also like to cover a rather large porch in Polycarbonate roofing. Like you, we have plenty of trees around the house and the snow load is a concern. Any input or pics of your completed project would be appreciated! Thanks!