- HEP Roofing
- Proper Attic Ventilation

Proper Attic Ventilation
Proper Attic Ventilation | Siding Solutions | Roofing | Robbins
In Robbins, where humid southern summers quickly give way to damp, chilly winters, the right balance of airflow and insulation can make or break a roof. HEP’s roofing experts design proper attic ventilation systems that sweep out trapped heat and moisture, guarding against mold, ice dams, and premature shingle wear—all while lowering utility bills. Pair that with our precision-installed siding solutions and you get a tightly sealed, beautifully finished home exterior that breathes in the right places and locks out the elements everywhere else.
Every project starts with a no-pressure inspection and an easy-to-read report, so you’ll know exactly what your roof deck, soffits, and wall assemblies need before the first hammer swings. From code-compliant vent layouts to fade-resistant panels that snap together flawlessly, HEP delivers craftsmanship you can feel in your comfort level and see in your curb appeal—season after season, storm after storm.
FAQs
Why is proper attic ventilation important for my Robbins home?
Robbins experiences hot, humid summers and cold, snowy winters, both of which stress a roof system. Adequate attic ventilation exhausts super-heated air in summer, preventing shingles from baking and AC equipment from working overtime. In winter it expels moist air produced by everyday living, helping stop condensation, mold growth, and ice-dam formation. The result is longer-lasting roofing, healthier indoor air, and lower energy bills year-round.
What kinds of vents can you install when you replace my roof or siding?
We match the ventilation method to your home’s design. Common options include ridge vents (continuous exhaust along the peak), balanced with new intake soffit vents hidden in your aluminum or vinyl soffits. Where a ridge is not present, we use low-profile box vents, gable vents, or solar-powered attic fans. All materials are color-matched to the new shingles and siding so the system functions efficiently without altering curb appeal.
How does poor ventilation shorten the life of roofing and siding?
Trapped heat can push attic temperatures above 150 °F, causing shingles to curl, lose granules, and fail years early. Moisture that cannot escape saturates roof decking, leading to rot, rusted fasteners, and wavy rooflines. That same moisture migrates to exterior walls, blistering paint or vinyl siding and feeding wood-destroying mold. A balanced vent system keeps temperature and humidity within safe ranges, protecting every exterior surface.
Will adding more vents raise my heating or cooling costs?
No. Properly balanced ventilation actually lowers utility costs. In summer it lets super-heated air escape, reducing attic temperatures by up to 30 °F and easing the load on your AC. In winter, intake vents work with insulation baffles to keep cold air from infiltrating living space while allowing moist air to exit. The net effect is a more stable attic climate and lower, not higher, energy consumption.
How do you determine the right amount of ventilation during a roofing or siding project?
Our technicians start with a free attic inspection, measuring square footage and calculating Net Free Vent Area (NFVA) in accordance with the International Residential Code’s 1 ft² per 300 ft² rule. We look for blocked or painted-over soffits, inspect insulation depth, and use thermo-hygrometers to record attic temperature and humidity. Based on those findings we design a balanced system, typically 60 % intake and 40 % exhaust, and provide a detailed proposal before any work begins.
Are there local codes or incentives in Robbins related to attic ventilation upgrades?
Robbins follows the Illinois Residential Code, which mandates the 1:300 ventilation ratio and requires at least 40 % of vent area be at the eaves. Our team pulls all necessary permits and arranges final inspections with the village. Homeowners may also qualify for ComEd’s Home Energy Rebate when ventilation improvements are paired with air-sealing or insulation upgrades—often saving $200–$400. We handle the paperwork so you can claim every available incentive.