RickR

If the door is steel or fiberglass, can I still screw a piece of wood to the top of it without causing problems?

TheDoorGuy

Yes indeed....The residential fiberglass and steel doors
have wood or composite frames around the outside.

RickR

oops, I meant to the top of the door itself so I don't have to worry about putting a notch in the new wood. Eventually I'll have get a new door put in, but in the meantime I do want to seal as best I can.

TheDoorGuy

Poor choice of words on my part, Rick....
The frame that I was speaking of is the outside edge system of the door.
It has top and bottom rails and side stiles that are wood or composite
construction. Either one is easy to nail or screw to.

Sorry for not being more clear in my earlier post.

TheDoorGuy
Door Guy-Services-Exterior-Interior-Doors

RickR

Oh, cool! Thank you so much!