I have a 1932 5-window and the original roof has been replaced with a UP solid roof along with a 4" chop. My question is with a solid roof "do I use the same interior wood structure as I would for an open roof", "is there a different wood package I should use", or "do I need wood at all"? My plan is to use the same as I would for an open (or fabric type insert roof), but that is because that';s all I can find. I'm assuming it's the correct thing to do for overall strength and have something to attach a headliner to, but wanted to ask the question. Thank you!
My thinking is you should use the wood. Wood is apart of the cars structure. You will need something to hang a head liner on. I think the car will sound and feel more solid.
Use the wood, but I would throw out a question to those have done this...... Is it advisable to use an adhesive of some sort to fill the gap between the wood and the metal insert to provide support and eliminate oil canning?
You could fill the gap between the wood and the steel roof with spray foam. It would support the roof, stop any oil canning, and glue the two pieces together for more strength.
Thank you to everyone who has replied to my question. I will order the standard wood kit from UP and install with either foam or heat shield/noise suppressant material between the wood and metal. I really appreciate the responses!
I used a donor top of import ( can not remember Honda 4 door model ) Almost perfect crown , No oil canning , in between wood & roof I uses Styrofoam with like silicone made into it, flexible but dense , like swim pool noodle but it was flat, cut shape to follow wood bowes to roof shape. I also used 3M Panel bond for insert
First 32 Ford closed car I built was in about 1975 and I bought it as a project car. The top had been filled with who knows what but it was welded in and it was a good job. It also had no top wood but it did have the wood over the doors and rear windows. Back then replacement top wood was not readily available. I went to the local lumber yard and had them rip me some wood strips long enough to go across from side to side and rest on top the side wood, Fastened them to the side wood with some tiny metal L brackets and flathead screws I got at the hardware store. when the headliner was installed no body had a clue that it wasn't the stock wood hold it up. Back then I probably spent $20 rather than $4-500. Cheap but effective.
There is a two part foam made for door skins and roofs that is a softer foam . Have use just enough to fill the gap or will make high spots . Spray foam could work but have to be very careful or will raise the roof ( not in a good way )