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Roof Ventilation & Attic Insulation—Blue Moon Balances Your Home’s Climate

Stop ice dams in winter, slash cooling costs in summer, and give your shingles the airflow they need to last.

Why Ventilation + Insulation Matter

Prevent Ice Dams

Balanced airflow keeps roof decks cold, so melting snow can’t refreeze at the eaves.

Lower Energy Bills

Proper R‑value insulation and ridge‑to‑soffit ventilation trim heating/cooling costs by up to 15 %.

Extend Roof Life

Heat‑baked shingles and trapped moisture rot decks from below; airflow and insulation halt both.

Healthier Indoor Air

Dry, well‑ventilated attics reduce mold spores and musty odors.

Financing & Rebates

Zero‑interest for 12 months (OAC) or low‑APR up to 10 years. Blue Moon files Energy Trust of Oregon rebate paperwork—save up to $600 on qualifying upgrades.

Warranty & Guarantees

  • 10‑Year Workmanship Warranty on vent & insulation installs.
  • Manufacturer Lifetime Warranty on ridge vents and fans.
  • Satisfaction Promise: If attic temps exceed our calculations by > 5 °F after 30 days, we add ventilation at no labor cost.

Signs Your Attic Needs Help

Symptom

Likely Culprit

Our Fix

High Summer AC Bills

Insufficient R‑value, poor venting

Add blown‑in cellulose, install ridge/soffit vents

Winter Ice Dams

Warm attic melts snow

Increase insulation depth, balance intake vs. exhaust

Moldy Roof Decking

Trapped moisture

Boost airflow, seal attic bypasses, install vapor barrier

Uneven Room Temps

Air leaks & low R

Air‑seal top plates, add baffles, increase insulation

All installations include synthetic underlayment, full ice‑and‑water barrier at eaves/valleys, high‑flow ridge vents, and color‑matched flashing.

High Summer AC Bills

Likely Culprit

Insufficient R‑value, poor venting

Our Fix

Add blown‑in cellulose, install ridge/soffit vents

Likely Culprit

Warm attic melts snow

Our Fix

Increase insulation depth, balance intake vs. exhaust

Likely Culprit

Trapped moisture

Our Fix

Boost airflow, seal attic bypasses, install vapor barrier

Likely Culprit

Air leaks & low R

Our Fix

Air‑seal top plates, add baffles, increase insulation

Our Two‑Step Solution

Attic Audit & Airflow Calculation

  • Blower‑door test spots air leaks.
  • Moisture meter checks deck humidity.
  • We calculate Net Free Vent Area (NFVA) to size ridge, hip, or box vents.

Upgrade & Balance

  • Insulation: Blow in cellulose or fiberglass to R‑49+ (per Oregon code).
  • Ventilation: Install continuous ridge vent and color‑matched soffit vents or smart plug‑in fans where architecture limits passive flow.
  • Air‑Sealing: Foam seal light can holes, plumbing stacks, and top‑plate gaps.

Most projects finish in one workday.

Ventilation Options

Vent Type

Best Use

Notes

Continuous Ridge Vent

Gable & hip roofs

Low‑profile, shingle‑integrated

Edge Vent (Roof‑to‑Wall)

Homes without soffits

Hidden under shingle course

Solar‑Powered Attic Fan

Complex rooflines

Auto‑adjusts cfm via thermostat

Gable End Vent

Older homes with large gables

Works with added soffit intake

Continuous Ridge Vent

Best Use

Gable & hip roofs

Notes

Low‑profile, shingle‑integrated

Best Use

Homes without soffits

Notes

Hidden under shingle course

Best Use

Complex rooflines

Notes

Auto‑adjusts cfm via thermostat

Best Use

Older homes with large gables

Notes

Works with added soffit intake

Insulation Choices

Material

R‑Value / Inch

Pros

Typical Applications

Blown‑In Fiberglass

2.8–3.2

Non‑settling, quick install

Most attics needing top‑up

Dense‑Pack Cellulose

3.6–3.8

Higher R, eco‑friendly

Deep energy retrofits

Spray Foam (Closed‑Cell)

6.0–7.0

Air‑seal & insulate in one step

Vaulted ceilings, knee walls

Blown‑In Fiberglass

R‑Value / Inch

2.8–3.2

Pros

Non‑settling, quick install

Typical Applications

Most attics needing top‑up

R‑Value / Inch

3.6–3.8

Pros

Higher R, eco‑friendly

Typical Applications

Deep energy retrofits

R‑Value / Inch

6.0–7.0

Pros

Air‑seal & insulate in one step

Typical Applications

Vaulted ceilings, knee walls

Why Homeowners Trust Blue Moon

Building‑Science Certified

BPI‑accredited technicians understand airflow, moisture, and code.

Thermal Imaging Tech

Infrared cameras reveal hidden hot spots others miss.

One‑Stop Shop

We address vents, insulation, roof repairs, and gutters—no juggling contractors.

4.9‑Star Google Rating

300 + reviews across Greater Portland.

Warranty Coverage

Because we’re GAF Master Elite® and CertainTeed SELECT ShingleMaster™, you receive:

50‑year manufacturer defect coverage (lifetime on designer lines)

10‑year Blue Moon workmanship guarantee

StreakGuard® algae protection on select shingles

All warranties are transferable once if you sell your home within the first decade.

FAQ

How much insulation do I need?

Oregon code calls for R‑49; many older homes have R‑19 or less. We top up to code or higher.

Will adding vents void my shingle warranty?

No. Proper ventilation is required by manufacturers and can extend warranty coverage.

Can I DIY blown‑in insulation?

Rental rigs work, but without air‑sealing and vent balancing, you risk moisture problems. Our audit ensures the whole system works.

Do attic fans increase heating bills in winter?

Solar‑powered fans shut off below set temps; passive vents stay balanced year‑round.

How long until upgrades pay off?

Most homeowners recoup costs in 3–5 years through energy savings and avoided repairs.

Service Area

Attic insulation & ventilation services for

and neighboring communities.

Balance your attic climate

save energy, stop ice dams, and protect your roof.