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Quick RV Upgrade: Adding Insulation

Quick RV Upgrade: Adding Insulation

"Thanks to Heartland RVs for partnering with me for this post. All opinions expressed are my own."

We live in a 2008 Heartland Bighorn, and RV insulation standards have come a long way since our home on wheels came off the assembly line.

Current Bighorn models, as well as Landmark 365 and Big Country models, are rated for full-time RVing. However, our fifth wheel's threshold for extreme temperatures is a lot lower than that of newer units made for year-round enjoyment. 

The easiest area to attack: the basement ceiling. There's nothing between those aluminum joists but air — air that does nothing to help us control the temperature in the bedroom, which sits right above the basement.

Those joists are not spaced at typical household intervals (ours weren't even spaced at consistent intervals); so we had to do a lot of trimming to make standard pink insulation fit between them.


  • Single-faced fiberglass R-13 insulation
  • 2" HVAC tape
  • Tape measure
  • Utility knife


There's not a lot to say about the "how to" part of the installation. Our day went kind of like this:

  • Pull everything out of basement
  • Measure
  • Measure again
  • Cut
  • Contort
  • Shove
  • Tape
  • Uncontort
  • Put everything back in basement
  • Look forward to enjoying a warmer bedroom this winter*

*Even after complaining loudly and often about spending a whole day in May on the project, inhaling pink insulation fibers and wondering why your husband can't just wear pajamas when he's cold.

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Friday, 20 April 2018
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