Peak to Peak Roofing installs attic insulation across Denver, Aurora, Littleton, Castle Pines, Parker, Brighton, Boulder, Thornton, Arvada, and Erie using pneumatic equipment calibrated for proper depth and density. Our roofing background means we coordinate ventilation baffles and air sealing to protect your roof deck from moisture damage.
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Denver sits in Climate Zone 5, where energy code sets the attic insulation target. These are the numbers we design to and verify on site with depth rulers and bag counts.
| Item | Typical figure | Why it matters | How we verify it |
|---|---|---|---|
| Attic R-value target | R-49 to R-60 in Climate Zone 5 | The IECC ceiling requirement for most of the Denver metro. Older homes often measure R-19 to R-30. | Depth measured at multiple bays and compared against the product coverage chart. |
| Loose fill fiberglass depth | Roughly 16 to 18 inches for R-49 | Depth varies by product density, so inches alone never prove the R-value. | Depth rulers set on a grid before blowing, read after settling. |
| Cellulose settling | About 15 to 20 percent after installation | Material blown to final depth on day one drops below target within a season. | Extra material added at install to land on target after settling. |
| Typical installed cost | $1.50 to $3.00 per square foot | Attic size, existing material removal, and air sealing scope drive the range. | Quoted after an on-site attic assessment, not over the phone. |
| Ventilation ratio | 1 square foot of net free vent area per 150 square feet of attic, or 1 per 300 with a balanced split | Insulation without intake and exhaust airflow traps moisture against the roof deck. | Intake and exhaust measured before the job, baffles installed at every eave bay. |
R-value targets follow the International Energy Conservation Code ceiling requirements for Climate Zone 5, which covers the Denver metro. Attic ventilation ratios follow the International Residential Code attic ventilation provisions. Depth and settling figures follow manufacturer coverage charts for loose fill fiberglass and cellulose. Cost ranges reflect typical Front Range installed pricing and are confirmed after an on-site assessment.
September 1, 2026
They did my dad's roof and I was really happy we chose them to replace our roof because the process was so easy from start to finish. I genuinely feel like they are an honest company doing great work. I recommend them all the time.
August 27, 2026
Luke from Peak to Peak came out and gave us options for fixing our gutter around the electrical mast. He was very informative, helpful and not at all pushy. The job they did looks great and does what it needs to. I will definitely call Peak to Peak for any future work.
July 22, 2026
Matt is super nice! The pricing and roof itself are amazing. They did an amazing jobs. Very honest and straight forward on the jobs they need to get done with very reasonable prices. I did call and talked with a lot of different companies but Peak to Peak is the right choice.
July 9, 2026
Luke came out to evaluate and scope repairs for roofing and siding. I greatly respected his honesty, transparency, and clear communication. Even though we didn't end up moving forward with the project, the invaluable advice and insights he shared were incredibly helpful. I'd highly recommend Luke and Peak to Peak to come out and give you a quote.
July 8, 2026
Working with Calvin has been an incredible experience. He knows his stuff. Knowledgeable, friendly & lots of experience. Thank you Calvin!
July 4, 2026
Luke was extremely responsive and great to work with. He even worked around my busy schedule and came by on a holiday. These guys are great and will be my go-to for any roof, gutter, or exterior needs.
June 30, 2026
Luke was honest and helpful. No BS, no up selling, just a clear and rational discussion of my options, with evidence. Will definitely contact with this company for all my future roofing and exterior needs.
June 25, 2026
Provided multiple services and always friendly, professional, timely, work was exceptional and always communicated everything up front. LOVED THEM and will use in the future.
June 23, 2026
Working with Calvin at Peak to Peak has been great! He’s an honest and knowledgeable guy in the industry!
June 1, 2026
Peak to Peak Roofing is incredible. Not only did Damon thoroughly examine and diagnosis my problem, he made sure that the work was completed immediately due to an impending rainstorm. He wanted to make sure we didn’t experience any water damage from our roof problem. I would not hesitate to recommend Damon and Peak to Peak.
May 14, 2026
I highly recommend using Peak to Peak Roofing & Exteriors! Specifically, Calvin has been nothing short of professional, very responsive, and continues to educate us on the industry as a whole to the fine details of a composition shingle to the installation process. Many thanks to the company and team!
May 11, 2026
Luke and Oliver were amazing! The previous owners had done a shotty job with securing the roof, and Luke came out to evaluate free of charge, handled the connection with a structural engineer, and did EXCELLENT work. 10/10 recommend
Homeowners add thickness and skip the air barrier because depth is visible and sealing is not. The projects that test cold six months later have proper R-value and active thermal bypasses. One without the other is insulation that looks right and performs poorly.
A 4.9 rating across 415 Google reviews reflects consistent performance on residential insulation projects throughout Denver and the Front Range. Peak to Peak Roofing holds industry certifications and manufacturer recognitions that verify technical capability and material handling standards.
The capability that determines long-term performance is not the material brand or the R-value target. It is whether the crew understood the attic as a system before they started blowing. Air sealing integration, ventilation balance, and moisture pathways decide whether the insulation works or just sits there looking thick.
Our trained technicians deliver Climate Zone 5 compliant coverage using calibrated blowing equipment, depth verification, and material selection matched to Denver's temperature swings and altitude conditions.
We establish thermal envelope enhancement by sealing top plates, penetrations, and chases before material placement, preventing convective loops that undermine R-value performance in the occupied space below.
Our experienced crews maintain continuous soffit to ridge airflow by installing baffles at eaves, preventing wind washing and moisture accumulation while preserving insulation depth over exterior plate lines.
We protect electrical and mechanical systems through IC rated fixture covers, chimney clearance verification, and code aligned fire blocking, so installations meet Denver Building Code requirements without creating hazards.
Our qualified teams document installed thickness with depth rulers, reconcile bag counts to manufacturer coverage charts, and provide thermal imaging verification to confirm density targets across the attic floor.
We assess vapor drive pathways, verify bath fan terminations exhaust outdoors, and inspect for condensation risk before adding material, preventing mold conditions that surface months after installation completes.
Blown insulation achieves its rated R-value only when air sealing eliminates convective pathways through top plates, chases, and penetrations before material goes in. Insulation that settles evenly still underperforms when air moves through the gaps it was meant to cover. The R-49 target means nothing if convective loops pull conditioned air into the attic through unsealed top plates and penetrations.
Top Plate Continuity Sealant closes framing gaps before any material is blown in.
Penetration Protocol Chase openings, wire holes, and flue clearances get treated before coverage.
Baffle Placement Eave airflow stays above the insulation layer instead of washing through it.
The projects that fail thermal imaging six months later skipped air sealing and added thickness instead. Depth without an air barrier is insulation that looks right and performs poorly.
Vapor barriers fail when installers treat them as a separate step instead of part of the thermal assembly. Attic insulation in Denver reaches R-49 at a typical installed cost of $1.50 to $3.00 per square foot, but that depth means nothing when moisture migrates through gaps the barrier was supposed to block.
Peak to Peak Roofing serves homeowners throughout Denver and surrounding areas, installing attic blow-in insulation directly at their properties. From Capitol Hill to Highlands Ranch, the team reaches homes across the metro via I-25, I-70, and US-285. Most attic insulation installations finish within one to two days, including air sealing and ventilation baffle placement.
Installations typically begin with a morning start time so air sealing, baffle placement, and material blowing finish in a single visit.
Winter temperatures are dropping, and your heating costs do not have to climb with them. Our roofing team understands how attic insulation works with your roof system to keep your Denver home comfortable year-round.
4.9/5 from happy homeowners
● Attic Assessments Available This Week
We measure existing depth, check ventilation, and quote the work after seeing the attic.
"Peak to Peak was great, they helped me with a repair on my roof. Helped me to extend the life of my roof."
- Luke Howard
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