I Would never place just one while in the lanai. The humidity from it would be not be very good Together with the ceiling's drywall. Even In case you have custom made requires in your tarp, it is possible to access out to Carolina CoverTech. They've got industrial sewing devices https://danteegbxp.mappywiki.com/1369761/the_fact_about_tarpaulin_that_no_one_is_suggesting