SNOWVENTCO

Snow-Proof Roof Vents

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The next generation in attic ventilation begins with the Micropore Stainless Steel Filter (MPSSF), Thousands of 120-micron holes keep out rain, snow and other unwanted elements.

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What is so Revolutionary About the Snowventco Roof Vents?

Snow‑proof roof vent featuring an oversized flange and flexible inner section.

Heavy-duty Construction

Extra-thick polypropylene construction and the steel filter ensure the vent can handle a lot of punishment. The hail resistant SNOWVENTCO Roofers’ Vent withstands over 180kg/400lb of standing weight.

Oversized Flange

A wider flange makes installation a snap and helps improve the overall seal. This simple improvement has been demanded by roofers for years.

Arched Design

An arched collar and cap help snow slide off the vent, avoiding build-up behind the vent.

Fly‑prevention symbol featuring a crossed‑out fly inside a blue circle.

Close‑up of a fine metal mesh with a coin inserted to show weave size.

Pest-Resistant

Unique Micropore Stainless Steel Filter

CSA Approval

Insects can't penetrate the SMART FILTER, while pesky raccoons and squirrels won't like gnawing through steel.

The next generation in attic ventilation begins with SNOWVENTCO'S SMART FILTER. Thousands of 120-micron holes keep out rain, snow and other unwanted elements.

These vents have received a stamp of approval from CSA. The SMART FILTER provides over 80 sq inches of open airspace for a 50 sq inch vent. This 60% over engineering of net free area (NFA) ensures strong attic airflow while the filter completely blocks the elements and exceeds CSAs requirements.

SNOWVENTCO vents are available in both exhaust and intake form. The exhaust vent is recommended for installation on sloped roofs with a minimum 4/12 pitch within 2 feet of the roof peak (Vents should not be installed on asphalt roofs higher than four stories. Do not remove hood from flange.) The roofers' intake vent can be installed lower on the roof. Check your local building codes. Vent is not available for sale in California.

Assorted SnowVentCo snow‑proof roof vents shown as a product group

Exhaust Vents

Available in Black, Brown, Grey and Clear. This CSA approved 50 square inch NFA, type B static roof exhaust vent is designed for use on attics, with installation near the peak of the roof. It is snow proof, effective at diverting water, and allows for airflow to keep attics cool and dry.

Intake Vents

Specially designed to be used when soffit vents are not an option, the SNOWVENTCO SMART VENTS Intake Vent has a built-in deflector to direct water around the vent. These vents may be mounted low on a sloped roof.

Skylite Vents

The SNOWVENTCO SMART VENTS Sky Lite Vent is the perfect solution for sheds and garages. Let light in while keeping snow and rain out so your tools and toys will stay dry.

Installation Instructions

Step #1 Always Check Local Building Codes:

Before you purchase or install roof vents, make sure you check all local building codes regarding correct roof vent placement for your region.

Step #2 Planning Minimum Pitch:

Type B box vents require a minimum 4/12 pitch on a shingled roof.

Step #3 Planning Number of Vents Required:

Building code requires a minimum of 1 sq ft of ventilation for every 300 sq ft of attic floor space.

Ventilation should be split 50/50 between intake and exhaust.

Each SNOWVENTCO Snow proof Roofers' Vent (intake or exhaust) has 50 sq inches of free air flow (Net Free Area)

Building code requires a vapor barrier between the attic deck and the living space if there is not at least 3ft of vertical height between the intake vents and the exhaust vents.

Step #4 Tools Required:

Extension ladder (ensure to tie off on the roof)

Safety harness

Rubber sole shoes

Claw hammer

Shingle lifter / pry bar

Skill saw

Roofing nails

Measuring tape

Chalk line

Level

Roofing hook blade (to cut shingles)

Step #5 Vent Placement:

Install exhaust vents 2ft from the roof peak

The intake vents should be placed a minimum 4 ft from the gable, 4 ft from the eaves

Evenly space the vents along the roof line ensuring not to cut into existing rafters.

Typically, vents can be discreetly placed on the backyard and garden sides of the structure. The more visible street side of the house can be left vent free.

Optional: Although not required, some roofers caulk each nail placement as well as the lower sides flange to the roof deck.

Disclaimer: Roofing can be dangerous. If you do not have the experience, please hire a professional.

The SNOWVENTCO snow-proof roofers' exhaust vent is recommended for installation on sloped roofs with a minimum 4/12 pitch within 2 feet of the roof peak.

Vents should not be installed on asphalt roofs higher than 4 stories.

Do not remove the hook from the flange.

The roofers' intake vent can be installed lower on the roof.

Check your local building codes.

Vent is not available in California.

A properly sealed, insulated and vented attic is truly a marvel of functional home design. Proper attics work in every climate to moderate the temperature and comfort of your home and keep AC and heating costs down.

Diagram comparing poor roof ventilation with trapped heat and moisture versus proper ventilation with balanced airflow.

STRONG AIR CIRCULATION IS KEY

One critical key in modern attic design is ensuring strong air circulation balanced between intake (usually soffit) and outtake (usually box or ridge) vents. This circulation allows excess heat and moisture that has risen to the attic peak to escape. This heat and moisture is generated from the everyday workings of the home (cooking, showers, air conditioning, heating, etc.)

VENTS CAN EXPOSE YOUR ATTIC TO THE ELEMENTS

Attic ventilation is absolutely critical to the proper functioning of your home, but in order to allow air to escape, the typical home requires a lot of vents—vents that expose the attic to attack from the elements.

Attic with loose insulation and a pile of snow that has entered through the roof.

Close‑up of deteriorated fiberglass insulation with dark moisture damagepercent+of+mold+in+homes+is+found+in+attic-1920w.webp

40% OF MOLD FOUND IN HOMES IS FOUND IN THE ATTIC

When storms force rain and snow to penetrate your attic, this moisture contributes to rot, mold, and potentially the permanent destruction of expensive insulation.

Rot can cause expensive structural damage and repairs. Mold can lead to serious health problems and, in some cases, dealing with black mold has led to the condemnation of homes (even new homes) and negative health effects, including death. The mold remediation industry estimates that 40% of the mold found in homes is located in the attic.

WET INSULATION IS PROBLEMATIC

Many excellent insulation products on the market suffer permanent R-value reduction of up to 40% once they become wet. Although the performance of the insulation improves as it dries, the waterborne contamination of the insulation from dirt, mold and other materials triggers an often permanent impairment of the insulating material.