Fill low spots in celing panels??

[IanT720]

Everyone I have a quick question... I’m sure it’s been said just maybe I’m not searching the right key words.... Anyways.. what do you guys use to fill in the low spots in the celing so I can apply a flat sheet of plastic to cover my celing. My bus is stock roof height so I’m looking to gain every inch I can... I was thinking some 1/4 foam sheets? Glue those to the metal, and then my plastic sheeting to the foam? What are your thoughts? Prefer if I can go buy it at Home Depot... thanks!

[IanT720]

Since the ribs were the panels join are high spots that’s the only area to glue... let me know if I need to attach pics

[IanT720]

Where the blue is...

[dan-fox]

Man, I'm not understanding what it is you want to do. What you have indicated in your picture seems to be the ceiling panels, which are screwed into and span the distance between the roof ribs. What is it that you want to fill in?

Some folk have taken down those panels, removed the possibly moldy fiberglas insulation behind them, and put new insulation back in. That might consist of flexible sheets of insulation, rigid sheets of insulation with slits cut into them to make them flexible, or spray foam (the best and most expensive solution).

Then, they either put the metal sheets back up (difficult) or figure out some way to put other ceiling treatment up, usually some form of wood strips.

Tell us what you're trying to accomplish and we'll help you get there. Oh, and welcome to the group! Oh, and please go to the "User CP" at the top left and fill in some of the details about yourself and your bus.

[IanT720]

Originally Posted by dan-fox

Man, I'm not understanding what it is you want to do. What you have indicated in your picture seems to be the ceiling panels, which are screwed into and span the distance between the roof ribs. What is it that you want to fill in?

Some folk have taken down those panels, removed the possibly moldy fiberglas insulation behind them, and put new insulation back in. That might consist of flexible sheets of insulation, rigid sheets of insulation with slits cut into them to make them flexible, or spray foam (the best and most expensive solution).

Then, they either put the metal sheets back up (difficult) or figure out some way to put other ceiling treatment up, usually some form of wood strips.

Tell us what you're trying to accomplish and we'll help you get there. Oh, and welcome to the group! Oh, and please go to the "User CP" at the top left and fill in some of the details about yourself and your bus.

I want to add ceiling panels that cover the metal panels, the previous owner already spray foamed the inside and had removed the fiberglass.. I was wondering what material can be used to fill the low spots (Where the panel ribs are spaced apart) So the ceiling can be flush while I glue up the new ceiling panels.. I think I will use 1/8" Luan as the "Spacer" to even out the ceiling

[jjhwick119]

Originally Posted by IanT720

I want to add ceiling panels that cover the metal panels, the previous owner already spray foamed the inside and had removed the fiberglass.. I was wondering what material can be used to fill the low spots (Where the panel ribs are spaced apart) So the ceiling can be flush while I glue up the new ceiling panels.. I think I will use 1/8" Luan as the "Spacer" to even out the ceiling

why not remove the factory panels and then attach yours to the ribs directly? You can run furring strips between the ribs to give you a surface to mount to as well

Typically that metal roof doesn't ever go back in when most people do their builds. It gets ripped out, new insulation put in the roof, and then new ceiling is put on.

[IanT720]

I would but mine was already converted to an RV so there's a lot of cabinets to remove to remove the ceiling tiles

[jjhwick119]

Originally Posted by IanT720

I would but mine was already converted to an RV so there's a lot of cabinets to remove to remove the ceiling tiles

Gotcha. I can understand not wanting to demo everything. I was assuming it was the bus in picture with nothing in it. I like the idea of using 1/8" board to level everything out. Seems like a good way to tackle it to me. Might have to alter that around the emergency exits depending on how those are trimmed out or if they've been replaced with something else