What are some economical and easy to maintain options for decks that lets sunlight through to the area below? (We’d like to do a mix of something that will do that with composite boards.)


Ian Marr
·June 28, 2020Architect

I would explore openings or skylights. But, without an accurate description, everyone is just shooting in the dark. (Sorry for the pun.)18 viewsView Upvoters · Answer requested by Heather KendallUpvote3
Add CommentIan Marr·July 9, 2020

If I understand you correctly you should have about 7′ of clear space under your deck. Assuming you have 1–3 open sides of that under-space, that alone would provide significant natural light. With 7′ of clearance, you can expect as much as 7′-14′ of direct sunlight penetration depending on which open sides are open to which directions (South facing gets the most light, Est gets more morning light, West gets more evening light, and North gets less light but it tends to be more even.)

Unless this is a 50′ deep structure most shade tolerant lawns would grow under those conditions.Upvote·1ReplyHeather Kendall·July 18

ty for the thoughful answer!

This deck connects to an elevated solarium (so, probably about 15′ depth) and has a big hill with a forest on one side. Closest to the lower floor of the house it will have almost no light a goodly portion of the day because of these semi-unique features. Hoping that bringing some openings closer to where the deck meets the solarium will help it get enough to support shade tolerant lawn alts.UpvoteReplyHeather Kendall·July 9, 2020

ty 🙂
We just took the old deck apart or I’d get you shots.
What description factors would help?

It will be about 8′ up and attached to a solarium that is likewise elevated. (The old one has been attached to the same, but about 2-3′ lower, at different points)

The width/depth of the new one, which we’ll be re-purposing as much of the old deck material for as we can, are presently under consideration.

Once we get the deck raised and the space flatter, there will be significant yard space underneath that we’d like to have some lawn alternatives grow in and have it be pleasant for people to hang out in.