FAMILY-OWNED · SINCE 1979 MADISON, WI · CENTERVILLE, IA LIC. DC-080900045
24/7 STORM LINE 866-642-5600
— Attic Ventilation · Madison, WI

Attic ventilation in Madison, WI — balanced, done right.

A complete, engineered system of balanced intake & exhaust — not a few bolted-on vents. Proper attic ventilation prevents ice dams and moisture, lowers your energy bill, extends shingle life, and keeps your GAF warranty valid. Free assessment across Madison & southern Wisconsin.

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FREE ASSESSMENT · WE REPLY IN ~2 HRS

Get your free attic assessment

Tell us about your home — we’ll confirm your free attic-ventilation assessment within one business day.

    🔒 FREE · NO OBLIGATION · NO SPAM

    47+ yrs
    Family-owned since 1979
    Top 2%
    GAF Master Elite
    $0
    Attic assessment
    Warranty
    Kept valid to spec
    ★ 4.9
    200+ Google reviewsRead our Google reviewsSee our BBB profileRead our GuildQuality reviewsRead our Yelp reviews
    — How we approach ventilation

    A complete system, not just a few vents.

    Attic ventilation is one of the most overlooked parts of a roof — and one of the most consequential. We engineer it: intake sized to exhaust, tailored to Wisconsin’s heat and cold, installed to manufacturer spec.

    Balanced System Design

    We calculate intake-to-exhaust and engineer the whole system based on your roof — not a few vents bolted on and hoped for.

    Intake Ventilation

    Continuous soffit and eave vents draw cool, dry air in at the bottom of the roof — the half of the system most contractors under-size.

    Exhaust Ventilation

    Ridge, box and powered exhaust vents let hot, moist air out at the top — installed with every new BGC roof.

    Ice-Dam Prevention

    Balanced ventilation keeps the roof deck cold and even, so snow doesn’t melt, run down and refreeze at the eaves. The real fix.

    Warranty-Safe Installation

    Installed to GAF specification so your enhanced warranty tiers stay intact. Get ventilation wrong and coverage can be voided.

    Roof Decking & Moisture

    Trapped moisture rots decking and grows mold. Proper airflow keeps the deck dry and the structure sound.

    Not sure if your attic is properly vented?

    Most aren’t. A free attic assessment tells you exactly where you stand — and what it’s costing your roof, your bills and your warranty.

    Sec 02 / 06
    — Why it matters

    Ventilation gets dismissed as an upsell. It isn’t.

    Done right, attic ventilation quietly protects your roof, your energy bill and your warranty — especially in a Midwest climate with big temperature swings. Here’s what it actually does.

    It saves energy

    Proper ventilation reduces heat buildup in summer and moisture in winter — lowering your energy bill year-round.

    It extends roof life

    Imbalanced ventilation cooks shingles from below — killing a 50-year roof in as little as seven. Balance is the difference.

    ★ Homeowner favorite

    It prevents ice dams & moisture

    A cold, even roof deck stops the melt-refreeze cycle that backs water under your shingles — and continuous airflow keeps the attic dry.

    It’s engineered, not guessed

    We size intake to exhaust with precise calculations — the difference between a system that works and vents that just look busy.

    ★ Homeowner favorite

    It protects your warranty

    Shingle warranty terms are directly tied to proper ventilation. Get it wrong and you can void coverage. We install to GAF spec.

    It’s tailored to our climate

    Wisconsin sees both extremes. We design for heat and cold, and follow manufacturer guidelines to the letter.

    ● GAF Master Elite · installed to spec

    Get ventilation wrong and you can void your shingle warranty.

    GAF and most manufacturers require proper ventilation for full coverage. As a top-2% Master Elite contractor, we install to spec — so the warranty you paid for actually holds.

    Is your attic under-ventilated?

    Four signs most Wisconsin homes show.

    Ice dams in winter

    Ridges of ice at the eaves and icicles mean a warm attic is melting snow up high.

    Hot, stuffy upstairs

    The top floor runs hot in summer because trapped attic heat has nowhere to go.

    High energy bills

    Your HVAC fights a superheated or damp attic all year, driving costs up.

    Moisture or mold

    Damp insulation, mold, or rusty nail tips in the attic mean winter moisture isn’t escaping.

    Sec 03 / 06
    — Under-ventilated vs balanced

    What proper ventilation actually changes.

    The same house, two different attics. Balance is the difference between a roof that lasts and one that ages before its time.

    FACTOR

    UNDER-VENTILATED ATTIC

    BALANCED BGC SYSTEM

    Shingle life

    As little as 7–10 years

    ✓  Full rated 30–50 years

    Ice dams

    Common every winter

    ✓  Prevented — cold, even deck

    Summer attic temp

    150°F+ superheated

    ✓  Much cooler, vented out

    Energy bills

    Higher year-round

    ✓  Lower — less HVAC load

    Moisture & mold

    Trapped, rots decking

    ✓  Exhausted, deck stays dry

    Shingle warranty

    At risk / can be voided

    ✓  Valid — installed to spec

    Sec 04 / 06
    — What customers say

    4.9 stars, pulled straight from Google.

      4.9 / 5 · 200+ verified reviewsRead our Google reviewsSee our BBB profileRead our GuildQuality reviewsRead our Yelp reviews
    Posted on Google Google
    Joy I profile picture
    Joy I
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    When the big storms came through the Madison-area in April 2026, I immediately started looking for a reputable roofer—who also understood the importance of weather-resistant materials that can withstand hail and wind. It didn’t take me long to find Brad from BCG. We had damage that needed to be repaired before the next round of storms came through later that day and Brad had a crew out within hours. Our neighbors also had damage, and when their roofing company didn’t show up, Brad and his crew also took on fixing their damage on the spot. The contracting process was done over email and we were able to clearly understand all of the options available to us. On the day of install, the crew was efficient and fast with their work. But also, mistakes can happen. And what matters to us is not that there’s perfection (because that’s not realistic), but how a contractor deals with a mistake. As they were taking down the tarps when they were finished with the roof, one of our lights next to the garage broke. Brad helped find a replacement online and had it shipped directly to our house! Such great service! All in all, we were very happy with Brad and the service we received from him and BCG. We’ve since recommended their services to several of our friends and neighbors who also had storm damage. While I hope we won’t have to do that again for a long time, we would work with BCG again in a heartbeat!
    Posted on Google Google
    Shelly Ziegler profile picture
    Shelly Ziegler
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    I am extremely pleased with the service Matt Walmer from Buckshot General Contracting (BGC) provided for me during the hailstorm damage in Madison in April. I had just switched insurance companies one year ago and was worried about how much they would cover. Matt assured me everything would be taken care of and had nothing to worry about. True to his word he immediately answered phone calls during off hours even when he was with daughter at volleyball and answering texts in seconds Matt met up with assessor and arrived 20 minutes early. During roof replacement he stopped in 3 times to check the progress and next day he came back to do a walk around to make sure the cleanup was to his standards. I have been so blessed to work with Matt at BGC as my contractor as everything went so smoothly. No problems with my insurance company and I was the first one on my block to get my roof done. I also was telling Matt about some of my neighbors having problems with their insurance and he was willing to look at their paperwork and giving them advice on how to deal with them. I can proudly say I announced to them how good Matt was and gave them his card. Thank you so much Matt for your excellent service and being a great representative for Buckshot General Contracting. These days days it’s hard to find a business that is 100% committed to making sure the customer is their #1 concern. Going to be doing more work and sticking with them as I know it will be top quality.
    Posted on Google Google
    Amy Stephens profile picture
    Amy Stephens
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    We contacted BGC after storm damage and had them completely re-roof and re-side our house, garage, and shed. The entire process was incredibly smooth from start to finish. They were easy to work with, handled all the details, and made what could have been a stressful situation completely worry-free. Our contact, Jayce Kirkland, was outstanding. His professionalism, communication, and courteous demeanor were truly a breath of fresh air. He took care of everything for us and made sure the project stayed on track every step of the way. We couldn’t be happier with the experience and have and would highly recommend BGC to anyone needing roofing or siding work!
    Posted on Google Google
    Rob Anast profile picture
    Rob Anast
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    Very customer focused company. Replaced my roof and siding after hail and wind damage 6 years ago. Second hail and damage storm this year and they are my vendor of choice again. In process now to replace my roof and siding.
    Posted on Google Google
    paolo masone profile picture
    paolo masone
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    Brad gave me a good price and the roof looks great! The roof was replaced in one day.
    Posted on Google Google
    Doug Cooper profile picture
    Doug Cooper
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    They did an excellent job! Fast, efficient and did a great job cleaning up.
    Posted on Google Google
    christos karampetsos profile picture
    christos karampetsos
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    My family member needed a roof replacement after the recent storm in Madison , Chad came out to inspect the roof and went over the options with us. Full roof replacement and the new roof looks GREAT, they were done with in 2 days and left no mess behind which was very thankful for. Thanks !!
    Posted on Google Google
    Jason Montez profile picture
    Jason Montez
    Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
    *update* number 2 I have been through about 4 different people now to get my issue fixed. They came and fixed the side that was leaking. The contractor that came out confirmed the siding wasnt installed properly and put in some flashing to fix the issue. Since it wasnt installed right i wanted the rest of the house done to prevent other issues and the company agreed to do that. Still not done and now im dealing with yet another person who has not contacted me to resolve my issue. Told them when this job was completed i wanted a new patio door as well to get the last year of the energy credit. Crickets. I have been very patient, but am beyond frustrated at this point. *update* After posting i was contacted regarding my review. Turns out the reason i wasn’t contacted was because my salesman is no longer with the company and never responded to tell me that when i called him (his number was still correct at the time of the call). I had a rep come to my home and immediately discuss solutions to the issue. Everything was done properly on my home, its just one of those things no one could foresee. I am beyond happy with the speed things are moving once i was contacted. Already making plans for additional work needed next season. Had windows and siding done. The windows crew was fantastic. Personable as well as professional. Siding crew was also great. My issue comes with the after care. My basement was leaking during rains. It also leaked running the sprinkler for new grass. Contacted my salesman and never heard back. Been probably a month? Had a contractor friend of mine come look and the issue was the siding wasnt ran low enough (or a piece of flashing would have worked as well) to stop water from coming through the basement from under the sill plate. Id have even paid to have it corrected, but no call. My issue is a simple one, but the aftercare deserves a one. The total score is because their crews were great. The people in admin simply need to be better. I had to remove foam that was trafficking water in and will be using flex seal to create a barrier since no call was made back. Update as of april, 2026. After some frustrating back and forth one of their contractors came our and looked at my situation late summer of 2025. Confirmed the siding wasnt done properly and installed flashing where the leak was and i haven’t had an issue since. Despite the numerous tornados weve had. With that said, Fall of 2025 i told them (after being informed the siding wasn’t done properly by their guy) i told them while the basement no longer seems to leak, i want the rest of the house covered with that flashing incase their are other problems. i dont want to refinish my basement to discover issues. The “salesman” essentially accused me of only wanting free things and after him explaining to me how awesome he was and that i was wrong, i stopped the phone call. The subcontractors they hire are overall solid, but some of the staff have made the company unusable for me. Just be cautious if you use them. Communication is great… until they get your money.
    Sec 05 / 06
    — Frequently asked

    Attic ventilation questions, answered.

    It removes heat in summer and moisture in winter — protecting your roof deck and shingles, lowering energy bills and preventing ice dams. Poor ventilation cooks shingles from below and can shorten a 50-year roof to as little as seven.

    Equal intake (low, at the soffits and eaves) and exhaust (high, at the ridge). Cool, dry air enters at the bottom and hot, moist air exits at the top. Unbalanced systems short-circuit and don’t work properly.

    Yes. GAF and most shingle manufacturers require proper ventilation, and getting it wrong can void full coverage. As a GAF Master Elite contractor we install to specification so your warranty stays valid.

    It’s the real fix. Balanced ventilation keeps the roof deck cold and even so snow doesn’t melt, run down and refreeze at the eaves. See our ice-dam page →

    Yes — it reduces heat buildup in summer so your AC works less, and removes moisture in winter. Proper ventilation lowers energy use year-round.

    Ice dams, a hot or stuffy upstairs, high energy bills, moisture, mold or rusty nails in the attic, and curling or blistering shingles. A free attic assessment tells you for sure.

    Sec 06 / 06
    — Where we work

    Attic ventilation across southern Wisconsin.

    Two offices — our Madison, WI headquarters and our Brodhead, WI office — serving homeowners across Dane & Milwaukee counties and into southern Iowa. Check your area →

    ● Wisconsin · Headquarters

    Madison, WI Office

    621 N Sherman Ave, Suite B5
    Madison, WI 53704

    Mon–Sat 8AM–5PM · 24/7 Storm Line

    ● Wisconsin · Brodhead Office

    Brodhead, WI Office

    17312 W Hafeman Rd
    Brodhead, WI 53520

    Mon–Sat 8AM–5PM · 24/7 Storm Line

    Popular service areas
    — Free attic assessment · WI & IA

    Find out what your attic is costing you.

    Whether it’s ice dams, a hot upstairs, high bills, or a new roof done right — we’ll assess your attic ventilation and show you exactly where you stand. GAF Master Elite, family-owned since 1979.

    FREE ASSESSMENT · WE REPLY IN ~2 HRS

    Get your free attic assessment

    Same form, wherever you are on the page.

    ★★★★★ 4.9/5 on 200+ Google reviewsRead our Google reviewsSee our BBB profileRead our GuildQuality reviewsRead our Yelp reviews

    Crew available todayFreeInspection1 dayMost installsDeductible onlyOn covered claims4.9 / 5200+ Google reviews

    ●  From the crew that writes the guides

    Done reading? Let us look for you.

    The guides tell you what to check from the ground. We get on the ladder, photograph every facet, and tell you straight: a claim, a repair, or nothing to worry about.

    Free roof inspection

    Three fields. Twenty minutes on site. Zero cost, zero obligation.

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