Fiberglass, cellulose, spray foam, reflective and rigid foam attic insulation installed by a licensed Yuma contractor. Stop heat at the roof, not at the thermostat.
Reviewed by Michael Lines, General Manager, Lines and Lundgreen Roofing and Insulation.
The roof is the hottest surface on a Yuma home in summer. The unrelenting Yuma sun heats your roof, your roof heats your attic, and your attic heats your ceilings of the rooms below. Without adequate attic insulation, your air conditioner is fighting a losing battle against an attic full of superheated air.
The numbers are worth examining:
Attic insulation is not glamorous work, but in this climate, it is one of the highest-return upgrades a homeowner can make.
Every insulation product has tradeoffs. Here is how we compare the options in the Yuma market.
Forms: Batts, rolls, blown-in (loose-fill)
Strengths: Widely available, cost-accessible, non-combustible, good thermal performance when installed correctly.
Tradeoffs: Does not air-seal. Performance drops if installed poorly or compressed. Loose-fill can be disturbed by air leaks.
Best for: Standard attic floor applications, budget-conscious projects, retrofits in unfinished attics.
Forms: Blown-in (loose-fill), dense-pack
Strengths: Made largely from recycled paper, treated for fire resistance. Denser than blown fiberglass, with some ability to resist air movement. Good sound attenuation.
Tradeoffs: Settles over time in attic floor applications; installers account for this by overfilling. Heavier than fiberglass.
Best for: Attic retrofits, applications where sound is a concern.
Forms: Liquid-applied, expands in place
Strengths: Insulates and air-seals in one product. Closed-cell delivers the highest R-value per inch of any common insulation. Conforms to irregular geometry.
Tradeoffs: Higher installed cost per square foot. Requires professional installation by a licensed contractor.
Best for: Underside of roof decks, cathedral ceilings, rim joists, complex attics and any application where air sealing matters. See our spray foam page.
Forms: Foil sheets or reflective coatings on sheathing
Strengths: Reflects radiant heat away from the attic. Particularly effective in hot, sunny climates like Yuma.
Tradeoffs: Does not insulate against conductive or convective heat transfer. Best used in combination with other insulation, not as a replacement.
Best for: Adding to existing attic insulation in Yuma homes to tackle radiant heat from the roof deck.
Forms: Polystyrene (EPS, XPS) or polyisocyanurate boards
Strengths: High R-value per inch, moisture resistant, adds structural rigidity.
Tradeoffs: Higher cost than fiberglass or cellulose; requires careful detailing at joints.
Best for: Exterior roof assemblies, between rafters, or in new construction where thermal performance in limited space matters.
Forms: Spray foam (both forms above) and rigid polyurethane boards
Strengths: Among the highest thermal performance of any residential insulation.
Tradeoffs: Higher cost; professional installation required.
Best for: High-performance applications where R-value per inch is the deciding factor.
The right insulation for your attic depends on a handful of questions:
Insulation slows heat transfer. Air sealing stops hot air from moving directly through gaps. They are related but different, and in Yuma both matter.
Common air-leak locations in a Yuma attic:
We address air sealing as part of any meaningful insulation retrofit. Foam-in-a-can, gaskets and sealed access panels all play a part. Skip this step and even good insulation will underperform.
We inspect what you have, recommend what you need, and put it in writing.