New Transom Windows Sharing is caring! Share Tweet Pin [/caption]Insulation applied on the inside Then the new naugahyde is applied Opening is masked off Clean hull surface with 50:50 denatured alcohol and water and the port light frame with acetone. Make sure to dry both surfaces. New port light is laid in place and held by tape so not to fall Attach ring with screws from the inside. Make sure to set tension of screw driver, so as not to strip screws. Finished port light Job progresses All Done! Cozy inside