Adding Insulation to a Reflection

[chemist308]

I'm considering adding insulation to my roof. What I'm proposing is basically pulling down the ceiling panels, adding 1 inch foam board insulation and re-installing my ceiling panels over the 1 inch foam. Has anyone done anything like this, and if so, was there a significant savings during winter propane use or summer electric (AC) use?

What I will tell you is that I already dropped the coroplast on the bottom, wrapped every pipe and added 2 layers of 1 inch foam between the frame rails, except where the tanks would only allow 1 layer. That one worked out pretty well for wintering in Colorado--we were skirted also but saw temperatures down to about -20F, stayed warm and didn't freeze our pipes. So that's what's got me thinking of addressing the roof.

Not willing to upgrade my rig--if you've seen my other mods, you understand why...

 

[huntindog]

I'm considering adding insulation to my roof. What I'm proposing is basically pulling down the ceiling panels, adding 1 inch foam board insulation and re-installing my ceiling panels over the 1 inch foam. Has anyone done anything like this, and if so, was there a significant savings during winter propane use or summer electric (AC) use?

What I will tell you is that I already dropped the coroplast on the bottom, wrapped every pipe and added 2 layers of 1 inch foam between the frame rails, except where the tanks would only allow 1 layer. That one worked out pretty well for wintering in Colorado--we were skirted also but saw temperatures down to about -20F, stayed warm and didn't freeze our pipes. So that's what's got me thinking of addressing the roof.

Not willing to upgrade my rig--if you've seen my other mods, you understand why...

What is the R rating of the foam boards you used?

 

[chemist308]

I believe they were R7. It was foil backed foam.

 

[jkwilson]

I'm considering adding insulation to my roof. What I'm proposing is basically pulling down the ceiling panels, adding 1 inch foam board insulation and re-installing my ceiling panels over the 1 inch foam. Has anyone done anything like this, and if so, was there a significant savings during winter propane use or summer electric (AC) use?

What I will tell you is that I already dropped the coroplast on the bottom, wrapped every pipe and added 2 layers of 1 inch foam between the frame rails, except where the tanks would only allow 1 layer. That one worked out pretty well for wintering in Colorado--we were skirted also but saw temperatures down to about -20F, stayed warm and didn't freeze our pipes. So that's what's got me thinking of addressing the roof.

Not willing to upgrade my rig--if you've seen my other mods, you understand why...

I’d take a vent frame apart and look before you get too far. I don’t believe there is that kind of space in there.

 

[Grandesigner]

Should already be stuffed with fiberglass insulation, so compare the R ratings before R&R...

 

[Riverbug]

Check out some tear downs on RVRoofInstall on YouTube. That will give you a clear idea of what is up in the ceiling. I think you'll find that is going to be a very difficult and messy job to do from the inside. Doable, sure. But a lot worse than working in the belly.

 

[Redapple63]

Check out some tear downs on RVRoofInstall on YouTube. That will give you a clear idea of what is up in the ceiling. I think you'll find that is going to be a very difficult and messy job to do from the inside. Doable, sure. But a lot worse than working in the belly.

Agree with Riverbug. Chloroplast can be removed and reinstalled much easier than the ceiling panels can. There should already be some insulation up there already. I would leave good enough alone.

 

[Randy Beasley]

I'm considering adding insulation to my roof. What I'm proposing is basically pulling down the ceiling panels, adding 1 inch foam board insulation and re-installing my ceiling panels over the 1 inch foam. Has anyone done anything like this, and if so, was there a significant savings during winter propane use or summer electric (AC) use?

What I will tell you is that I already dropped the coroplast on the bottom, wrapped every pipe and added 2 layers of 1 inch foam between the frame rails, except where the tanks would only allow 1 layer. That one worked out pretty well for wintering in Colorado--we were skirted also but saw temperatures down to about -20F, stayed warm and didn't freeze our pipes. So that's what's got me thinking of addressing the roof.

Not willing to upgrade my rig--if you've seen my other mods, you understand why...

I would try adding low expanding foam first. There is many places to access the attic with a wand.