Pipe Flashing

FAMCO Flat Roof Pipe Flashing - Galvanized Steel (Side)
Low Slope FlashingPitch Base Pipe Flashing
Steep Slope Flashing

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Residential Use

Essential for preventing damage and ice accumulation. Options available for various types of roofs, including flat roofs, pitched roofs, and sloped roofing systems.

Commercial Use

Designed for applications involving single-wall or double-wall vent pipes.

Product Highlights
  • FHA Pipe Flashing

    Designed for use with pipe sizes ranging from 1-1/2″ to 14″. The flexible cone makes this flashing highly adaptable, allowing it to be used on roofs with a pitch ranging from 1/12 to 6/12, making it a versatile solution for various roof installations.

  • FP Pipe Flashing (Flat Pitch Roof)

    Crafted for use on flat roofs, providing a protective shield over the pipe. Available for pipe sizes ranging from 1 inch to 24 inches, this flashing is ideal for shielding the pipe but is not designed for mounting a cap.

  • Tall Pipe Flashing (Flat Pitch Roof)

    This flashing is designed to be placed over pipes on flat roofs, offering protection for the pipe. For mounting a cap, consider using the FB round vent base.

Pipe Flashing Installation Tips
  • Proper Placement

    Install pipe flashings directly over the vent pipe, with the base securely sealed to the roof surface. For sloped or pitched roofs, pitched base flashings with adjustable pitches should be selected to match the angle of the roof, ensuring optimal water runoff.

  • Flashing Selection

    Choose flashings based on roofing material, climate, and specific ventilation needs.

  • Professional Installation

    While some flashings may be installed by a homeowner, professional installation is recommended for complex systems or areas with challenging access.

Frequently Asked Questions

What is the primary purpose of HVAC pipe flashings?

The primary purpose of HVAC pipe flashings is to prevent water from entering a home or building around vent pipes that protrude through the roof. These flashings create a watertight seal around the pipe, preventing rain, snow, or melting ice from leaking into the structure and cause damage.

How do I choose the right HVAC pipe flashing for my needs?

Choosing the right HVAC pipe flashing depends on several factors, including the type of roof, the pitch, the size of the vent pipe, and the specific environmental conditions of the area. For a flat roof, a flat base pipe flashing with a 6 or 12-inch rise might be appropriate. For sloped or pitched roofs, FHA pipe flashings with adjustable pitch settings (like the “G” or “GH” models) offer more flexibility to accommodate different angles.

What warranty is provided with a HVAC pipe flashing?

FAMCO’s one-year warranty for HVAC pipe flashing products offers coverage for manufacturing defects. If you experience any issues or defects with your pipe flashings, reach out to our customer support team for assistance.

Learn More About Our Pipe Flashing

Pipe Flashing

Every pipe that penetrates a roof creates an opening water will find. Pipe flashing seals that opening, directing rain, snowmelt, and ice away from the deck before it reaches insulation, framing, or drywall. FAMCO manufactures galvanized steel pipe flashings engineered to fit residential vent stacks, commercial exhaust penetrations, and single-wall, double-wall, and triple-wall pipe assemblies.

Formed from corrosion-resistant galvanized steel with a wide, water-shedding base and a collar sized to the pipe, FAMCO flashings hold their shape through freeze-thaw cycles and years of UV exposure. Whether you need to buy pipe flashing online for a flat commercial roof, an adjustable pitch base for a sloped residential roof, or a cricket to split snow above a stack, FAMCO builds a flashing designed for the job.

Flat Roof and Low-Slope Pipe Flashing

On a flat or low-slope roof, water sits rather than runs, so the flashing has to shed standing water and resist pooling at the collar. FAMCO Pipe Flashing – Flat Pitch Roof is built for exactly that condition, covering pipe sizes from 1 inch to 24 inches and shielding the pipe where slope alone will not move water away. It is designed as protection for the pipe itself and is not intended for mounting a cap.

Where the penetration needs additional height above the roof surface — deeper insulation assemblies, ballast, or areas prone to snow accumulation, Tall Pipe Flashing – Flat Pitch Roof raises the collar while keeping the same flat-pitch base geometry. If your installation calls for a cap on top of the pipe, pair the penetration with an FB round vent base instead of flashing alone.

Adjustable Pitch Flashing for Sloped and Steep Roofs

The pitch of your roof determines which flashing base will lie flat and seal correctly, and a mismatched pitch is the most common cause of a leaking penetration. FAMCO adjustable FHA flashings solve this with a flexible cone that conforms to a range of angles instead of a single fixed slope. FHA Pipe Flashing – Adjustable 1-6/12 Low Pitch covers pipe sizes from 1-1/2 inch to 14 inch across the low and moderate pitches found on most residential roofs.

For steeper roofs, FHA Pipe Flashing – Adjustable 7-12/12 Steep Pitch carries the same galvanized construction and adjustable cone through the higher slope range. Between the two, a single flashing family covers nearly every pitch a residential or light commercial roof will present, which simplifies stocking for contractors working across varied housing stock.

B-Vent Flashing and Cricket Snow Splitters

Double-wall and triple-wall B-vent pipe runs hotter and larger in diameter than a plumbing stack, and it requires flashing built for that connection rather than a single-wall part forced to fit. FAMCO manufactures B-Vent FHA Pipe Flashing – Adjustable 1-6/12 Low Pitch and B-Vent Pipe Flashing – Adjustable 7-12/12 Steep Pitch, matching the low-slope and steep-slope pitch ranges with collars sized for double- and triple-wall pipes.

In climates where snow slides, the uphill side of a roof penetration is where ice loads and debris collects. Cricket Flashing, also called a snow splitter, mounts above the pipe and diverts sliding snow, ice, and water around the penetration rather than into it — protecting both the flashing seal and the vent pipe itself from impact and prolonged moisture contact.

The FAMCO Standard

Rely on FAMCO as your trusted manufacturer for galvanized pipe flashing, adjustable pitch bases, flat roof vent flashing, B-vent roof flashing, and cricket snow splitters. Need help measuring your roof pitch, matching a collar to a single-wall or double-wall pipe, or deciding between a flat pitch flashing and a round vent base? Contact our ventilation specialists for expert guidance or request a quote for commercial or residential bulk orders. Installing a FAMCO pipe flashing delivers a watertight roof penetration, longer vent pipe service life, and protection against the moisture damage that starts small and ends expensive.

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FAMCO Pipe Flashing Benefits

Energy Efficiency
Prevents snow and ice buildup around the vent pipes.
Moisture Buildup
Prevents water from entering the home through the vent pipe, which can lead to mold, leaks, and damage.
Improved Airflow
Prevents blockages, optimizes ventilation, and reduces the risk of corrosion caused by water exposure.