About Holliday Insulation
A family-owned insulation contractor serving central Indiana.
Built by a firefighter. Run as a family business.
Holliday Insulation was founded by Justin Holliday, who spent years in the fire service before starting the company. That background isn’t a marketing line — it shapes how the company approaches every job. Fire-rated materials, code-grade installations, intumescent and thermal barrier coatings included where they’re required. Safety is treated as table stakes, not as an upsell.
Justin runs field operations. Greg Hochstedler, our sales manager, handles the day-to-day — quotes, customer communication, scheduling. The rest of the team is family. When you call Holliday Insulation, you’re talking to the people doing the work, not a call center.
We’re based in Knightstown, Indiana and serve homes, businesses, and farms across the central Indiana region — Anderson, Greenfield, Indianapolis, Muncie, and most of the I-70 / I-69 corridor.
Our mission
Deliver the most energy-efficient, safest insulation work in central Indiana — using the best materials available, installed correctly the first time, by people who actually live in the communities they serve.
Frequently asked questions
What is spray foam insulation?
Spray foam insulation is an alternative to traditional fiberglass. It expands to fill the cavity, providing draft protection and tighter temperature control — which translates directly to lower energy bills.
Is spray foam safe to use in my home?
Yes. The foam we install is essentially the same cellular plastic as a coffee cup. It’s water-blown — meaning water is the blowing agent — and is non-toxic once cured.
Does spray foam cost more than fiberglass?
Yes, the upfront investment is higher. Most of our customers recover the difference within 3–5 years through energy savings.
Why does spray foam perform better than fiberglass?
Air sealing. Fiberglass, no matter how well it’s installed, doesn’t create an air barrier — air still moves through it, which lets inside and outside climates mix and can cause condensation inside walls. Spray foam seals the cavity completely.
Do I still need to ventilate my attic if I insulate it with spray foam?
No. Spray foam goes on the underside of the roof deck, which raises the insulation plane from the ceiling to the roof. That converts the attic into conditioned space.
Is spray foam better for sound than fiberglass?
Yes. Spray foam is denser than fiberglass and attenuates sound more effectively. Exact sound reduction depends on the wall assembly — designs that emphasize sound control (staggered stud, etc.) will go further.
Open-cell vs. closed-cell foam — what’s the difference?
Both are excellent thermal and air barriers. Closed-cell is waterproof and rigid. Open-cell lets water move through it and dry — useful in assemblies that need to dry out if water ever gets in (especially in wood-framed structures). Both have their place; we’ll recommend the right one for your job.
Where in a building can spray foam be used?
Anywhere traditional insulation goes, plus the hard-to-reach areas where traditional insulation falls short: attics, cathedral ceilings, basements, walls, crawl spaces, rim joists.
In new construction, when do you install spray foam?
Same stage as traditional fiberglass — after mechanical and framing inspections pass, before sheetrock goes up.