Roof flashings are crucial for maintaining the integrity and longevity of a building's roof. Constructed from durable materials like metal, rubber, or plastic, they are designed to withstand harsh weather and resist corrosion. Flashings prevent water or moisture from penetrating roofing joints or intersections, such as chimneys, vent pipes, and skylights. By forming a watertight barrier, roof flashings redirect water away from these vulnerable areas, protecting the roof structure, insulation, and interior from potential water damage.

Roof Flashings

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Portals Plus 23015, Alumi-Flash Extra Wide Base w/126...
Extra Wide Base w/126 Black Cap
Price: $127.20
Availability: In Stock
Portals Plus Item #: POR-23015 -

    Features: Furnish and install the Portals Plus Extra Wide Alumi-Flash at all points where one penetration 2" - 6" in diameter penetrates the roof. The Extra Wide Alumi-Flash shall include a .060" spun aluminum base unit with a height of 4" and a base diameter of 18". The 8" collared opening shall have two beaded sealing rings roll-formed into the top edge. An EPDM (Ethylene Propylene Diene Monomer)compression molded cap model C-126 shall be utilized. All Caps shall include Portals...

    Portals Plus 36002, Double Pipe Portal Cover with 126 &...
    Double Cover & Cap w/ C-126 & C-212 Black Caps
    Price: $479.75
    Availability: In Stock
    Portals Plus Item #: POR-36002 -

      Furnish and install the Portals Plus Double Pipe Portal at all points where up to two pipes .375" - 1" in diameter, up to two pipes 1" - 2" in diameter and one pipe 2" - 6" in diameter penetrate the roof.The Pipe Portal shall include an 18 gauge galvanized roof curb model RC-___A with integral base plate, continuously welded corner seams, factory-installed wood nailer, and 1.5" 3lb. rigid fiberglass insulation. The Pipe Portal shall be furnished with a laminated, acrylic coated, ABS plastic...

      Portals Plus 32131, Large RC-2A Straight Sided Curb- 11"...
      LG RC-2A Stright Sided Curb- 11" High
      Price: $401.90
      Availability: In Stock
      Portals Plus Item #: POR-32131 -

        Large RC-2A Straight Sided Curb for decks with lightweight fill or tapered insulation.

        Portals Plus 29305, Double Curb Cover, Tan
        Double Cover for *DBL Roof Curbs Pipe Portal Systems
        Price: $282.70
        Availability: In Stock
        Portals Plus Item #: POR-29305 -

          Double Cover Only for *DBL Roof Curbs Pipe Portal Systems  A laminated, acrylic coated, ABS plastic curb cover with pre-punched 8" holes and molded sealing ring. Does not include pips curb caps.

          Portals Plus 32141, Large RC-3A Canted Curb- 8" High
          LG RC-3A Canted Curb- 8" High
          Price: $401.90
          Availability: In Stock
          Portals Plus Item #: POR-32141 -

            Large RC-3A Canted Curb for non-insulated decks. Roof curbs have an integral base plate, continuously welded corner seams, factory-installed wood nailer, and 1.5" 3 lb. rigid fiberglass insulation. Designed for use with 320 curb cover components.

            Golden Rule Fasteners - Residential ZipSeal EPDM Retro...
            Residential ZipSeal EPDM Flashing
            Price: $66.67
            Availability: In Stock
            Golden Rule Fasteners Item #: GR-PF-RESZIP -

              Zipseal Residential Flashing - 0.375" This is a patented one piece Electrical Mast Flashing closed with stainless steel clips designed specifically for shake or shingle roofing. Nothing to "spin" and no plates to screw on or pipe clamps to tighten. Made out of a durable EPDM rubber, the electrical mast flashing has a life expectancy of 20 years if used within a temperature range of -58 degrees F to 239 degrees F. Galvanized mesh reinforced base is strong and rigid.  ...

              Portals Plus 22051, Alumi-Flash Standard Base w/182 Black...
              Standard Base w/182 Black Cap
              Price: $208.40
              Availability: In Stock
              Portals Plus Item #: POR-22051 -

                Furnish and install the Portals Plus Large Alumi-Flash at all points where one pipe 8" - 12" in diameter penetrates the roof.The Large Alumi-Flash shall include a .060"spun aluminum base unit with a height of 4" and a base diameter of 22". The 14" collared opening shall have two beaded sealing rings roll-formed into the top edge. An EPDM(Ethylene Propylene Diene Monomer) compression molded cap, model C-182 shall be utilized. All Caps shall include Portals Plus'stainless steel Snaplock Clamps....

                Portals Plus 32151, Large RC-4A Raised Canted Curb- 9 1/2"...
                LG RC-4A Raised Canted Curb- 9 1/2" High
                Price: $401.90
                Availability: In Stock
                Portals Plus Item #: POR-32151 -

                  Large RC-4A Raised Canted Curb for decks with rigid insulation. Roof curbs have an integral base plate, continuously welded corner seams, factory-installed wood nailer, and 1.5" 3 lb. rigid fiberglass insulation. Designed for use with 320 curb cover components.

                  Aztec Washer Company, #RS201GA Residential Master Flash -...
                  Adapts to almost any roof pitch including 45 degree, Cuts to suit pipe 8 in. - 11 in.
                  Price: $49.55
                  Availability: In Stock
                  Aztec Washer Company, Inc. Item #: 204-RS201GA -

                    This unique flashing was designed for residential use with a built in 20 degree pitch allowing adaptability to almost any roof pitch including 45 degrees. The clearly marked designation of pipe diameter takes the guess work out of sizing. A “C20 ASTM” additional requirement was added to ensure conformance to the most stringent ozone/weathering specifications available. This addition allows the rubber a minimum 20 year life. Features: Weather Protection: Gray EPDM Rubber with a C20 ASTM assures...

                    Portals Plus 36012, Double Pipe Portal Cover with 126 &...
                    Double Cover & Caps w/ C-126 & C-412 Black Caps
                    Price: $479.75
                    Availability: In Stock
                    Portals Plus Item #: POR-36012 -

                      Furnish and install the Portals Plus Double Pipe Portal at all points where one penetration 2" - 6" in diameter and where up to four pipes .1" - 2" in diameter penetrate the roof. The Pipe Portal shall include an 18 gauge galvanized roof curb model RC-___A with integral base plate, continuously welded corner seams, factory-installed wood nailer, and 1.5" 3lb. rigid fiberglass insulation. The Pipe Portal shall be furnished with a laminated, acrylic coated, ABS plastic curb cover with prepunched...

                      Portals Plus 36102, Double Pipe Portal Cover with 412 &...
                      Double Cover & Caps w/ C-412 & C-481 Black Caps
                      Price: $479.75
                      Availability: In Stock
                      Portals Plus Item #: POR-36102 -

                        Furnish and install the Portals Plus Double Pipe Portal at all points where up to four pipes .375" - 1" in diameter and four pipes 1" - 2" in diameter penetrate the roof. The Pipe Portal shall include an 18 gauge galvanized roof curb model RC-___A with integral base plate, continuously welded cor-ner seams, factory-installed wood nailer, and 1.5" 3lb. rigid fiberglass insulation. The Pipe Portal shall be furnished with a laminated, acrylic coated, ABS plastic curb cover with prepunched holes...

                        Aztec Washer Company, #RS101GA Residential Master Flash -...
                        Adapts to almost any roof pitch including 45 degree, Cuts to suit pipe 3 in. - 8 in.
                        Price: $28.75
                        Availability: In Stock
                        Aztec Washer Company, Inc. Item #: 204-RS101GA -

                          This unique flashing was designed for residential use with a built in 20 degree pitch allowing adaptability to almost any roof pitch including 45 degrees. The clearly marked designation of pipe diameter takes the guess work out of sizing. A “C20 ASTM” additional requirement was added to ensure conformance to the most stringent ozone/weathering specifications available. This addition allows the rubber a minimum 20 year life. Features: Weather Protection: Gray EPDM Rubber with a C20 ASTM assures...

                          Portals Plus 29265, C126 White Cap w/Clamp
                          White Cap w/Clamp
                          Price: $76.85
                          Availability: In Stock
                          Portals Plus Item #: POR-29265 -

                            The flexible EPDM cap eliminates roof leaks because penetrations can expand, contract, and vibrate independently of the roofing system. Used together with Alumi-Flash or Plasti-Flash Base. The EPDM cap is mechanically sealed to the Alumi-Flash or Plasti-Flash base by a double "Weather-Tite Pressure Seal", which consists of two beads formed into the collar of the base that mate with double grooves molded into the inside of the cap. The Portals Plus Alumi-Flash provides a permanent, watertight,...

                            Portals Plus 36022, Double Pipe Portal Cover with C-126 &...
                            Double Cover & Caps w/ C-126 & C-481 Black Caps
                            Price: $479.75
                            Availability: In Stock
                            Portals Plus Item #: POR-36022 -

                              Furnish and install the Portals Plus Double Pipe Portal at all points where one penetration 2" - 6" in diameter and where up to four pipes .375" - 1" in diameter penetrate the roof. The Pipe Portal shall include an 18 gauge galvanized roof curb model RC-___A with integral base plate, continuously welded corner seams, factory-installed wood nailer, and 1.5" 3lb. rigid fiberglass insulation. The Pipe Portal shall be furnished with a laminated, acrylic coated, ABS plastic curb cover with...

                              Portals Plus 36062, Double Pipe Portal Cover with 212 &...
                              Double Cover & Caps w/ C-212 & C-481 Black Caps
                              Price: $479.75
                              Availability: In Stock
                              Portals Plus Item #: POR-36062 -

                                Furnish and install the Portals Plus Double Pipe Portal at all points where up to six pipes .375" - 1" in diameter and two pipes 1" - 2" in diameter penetrate the roof. The Pipe Portal shall include an 18 gauge galvanized roof curb model RC-___A with integral base plate, continuously welded corner seams, factory-installed wood nailer, and 1.5" 3lb. rigid fiberglass insulation. The Pipe Portal shall be furnished with a laminated, acrylic coated, ABS plastic curb cover with prepunched holes and...

                                Aztec Washer Company, #RF301BS-RD Universal Retrofit...
                                For existing applications where a standard pull over flashing cannot be installed.
                                Price: $50.55
                                Availability: In Stock
                                Aztec Washer Company, Inc. Item #: 204-RF301BS-RD -

                                  The Universal Retrofit has been designed to accommodate existing applications where standard pull over flashing cannot be installed. The split design allows an easy wrap around fit with a single stainless steel clamp for sealing. Weather Protection: Made of EPDM, this flashing is compounded especially for maximum resistance due to ozone and ultraviolet lightFlexible Base: Easily forms to contours of roof panel5 Minute Installation ...

                                  Aztec Washer Company, #RS051GA Residential Master Flash...
                                  Adapts to almost any roof pitch including 45 degree, Cuts to suit pipe 1/4 in. - 3 in.
                                  Price: $24.75
                                  Availability: In Stock
                                  Aztec Washer Company, Inc. Item #: 204-RS051GA -

                                    This unique flashing was designed for residential use with a built in 20 degree pitch allowing adaptability to almost any roof pitch including 45 degrees. The clearly marked designation of pipe diameter takes the guess work out of sizing. A “C20 ASTM” additional requirement was added to ensure conformance to the most stringent ozone/weathering specifications available. This addition allows the rubber a minimum 20 year life. Features: Weather Protection: Gray EPDM Rubber with a C20 ASTM assures...

                                    Aztec Washer Company, #RS201BA Residential Master Flash -...
                                    Adapts to almost any roof pitch including 45 degree, Cuts to suit pipe 8 in. - 11 in.
                                    Price: $49.55
                                    Availability: In Stock
                                    Aztec Washer Company, Inc. Item #: 204-RS201BA -

                                      This unique flashing was designed for residential use with a built in 20 degree pitch allowing adaptability to almost any roof pitch including 45 degrees. The clearly marked designation of pipe diameter takes the guess work out of sizing. A “C20 ASTM” additional requirement was added to ensure conformance to the most stringent ozone/weathering specifications available. This addition allows the rubber a minimum 20 year life. Features: Weather Protection: Black EPDM Rubber with a C20 ASTM...

                                      Aztec Washer Company, #RS301BA Residential Master Flash -...
                                      Adapts to almost any roof pitch including 45 degree, Cuts to suit pipe 11 in. - 18 in.
                                      Price: $84.25
                                      Availability: In Stock
                                      Aztec Washer Company, Inc. Item #: 204-RS301BA -

                                        This unique flashing was designed for residential use with a built in 20 degree pitch allowing adaptability to almost any roof pitch including 45 degrees. The clearly marked designation of pipe diameter takes the guess work out of sizing. A “C20 ASTM” additional requirement was added to ensure conformance to the most stringent ozone/weathering specifications available. This addition allows the rubber a minimum 20 year life. Features: Weather Protection: Black EPDM Rubber with a C20 ASTM...

                                        Golden Rule Fasteners - Golden Seal, Shingle Retro Pipe...
                                        Retro Pipe Flashing
                                        Price: $66.67
                                        Availability: In Stock
                                        Golden Rule Fasteners Item #: GR-PF-GSSR1 -

                                          GoldenSeal Flashing fits pipes up to 3-3/8" we suggest using the factory cutting marks if the roof slope is 27° to 57° (6 on 12 to 18 on 12). For all other slopes a special cut will be required and isntallation by a roofing professional is recommended. The suggestion above is based on product testing with a pipe with 2-3/8" outside diameter extending through an adjustable test roof with plywood decking. Actual results may vary for your particular application. Consult a roofing professional for...

                                          Marathon Roofing Products Uniboot
                                          Marathon Roofing Products Aluminum Uniboot
                                          Price: $72.95
                                          Availability: In Stock
                                          Marathon Roofing Products Item #: 305-BUNIBOOT -

                                            The MARATHON UNI-BOOT offers a permanent, watertight solution for roof system penetrations, requiring no ongoing maintenance. Suitable for all types of roofing systems, it eliminates the need for traditional pitch pans. Constructed from EPDM, with rubber caps and a spun aluminum base, the UNI-BOOT ensures protection from leaks at roof penetrations. Black EPDM cap designed for maximum resistance to weathering, ozone, UV rays, and extreme temperatures (hot and cold).New caps are mechanically...

                                            Portals Plus 29205, - White Curb Cover with C-126 Black...
                                            Cover for use with 126 caps
                                            Price: $82.20
                                            Availability: In Stock
                                            Portals Plus Item #: POR-29205 -

                                              Portals Plus #29205 WHITE color Plastic Curb COVER, for use with #C-126 Cap.

                                              Portals Plus 29295, - Large Pipe Portal Cover, Tan
                                              Cover for *LG Roof Curbs Pipe Portal Systems
                                              Price: $123.95
                                              Availability: In Stock
                                              Portals Plus Item #: POR-29295 -

                                                Used with a roof curb as a flashing system for routing piping and other penetrations through a roof.A laminated, acrylic coated, ABS plastic curb cover with one prepunched hole for a C-182 cap and molded sealing ring on an 14" collared opening. Cover only, cap sold separately.

                                                FAQs

                                                What Is Roof Flashing?

                                                When it comes to preventing leaks in your roof, the flashing plays an integral role. Typically comprised of copper, aluminum, or galvanized sheet metal, the flashing works as a seal between the roof joints, efficiently keeping water out.

                                                What Kind of Material is Your Roof Flashing?

                                                Most homes feature galvanized sheet metal. However, a copper roof is likely to have a copper flashing. And homeowners that install the flashing themselves tend to use aluminum because of its easier installation and affordability. Most roof installers use soldering to build flashing—regardless of the material.

                                                Most Common Areas for Leaks?

                                                Experts agree that the roof areas that have the highest risk for leaks include the valleys and locations where pipes penetrate the roof surface. The best solution to prevent leaks in these areas is to use an asphalt roofing cement to seal and keep out water. Ensuring the pipes have the proper vent pipe flashing is another way to stop leaks in this area of vulnerability.

                                                Damaged flashing poses another risk for roof leaks. Because it is regularly exposed to the elements, it makes sense that it will experience some wear and tear over time. From cracking and warping to coming loose from the roof, it can have issues that leave your roof unable to do its job to keep your home safe and dry.

                                                What Makes Roofs Vulnerable?

                                                Why is roof flashing even necessary? Corrosion is one problem, especially if you already have a roof made of metal. There are also some areas of your roof that are more likely to suffer water damage than others, and that is where roof flashing comes in handy. The surface or the dormer walls of the roof can be vulnerable. Roof flashing deals with that problem. The perimeter of your skylight, your chimneys, and your roof valleys are all exposed as well. In short, any place where water runoff can collect before it travels into the gutters and downspouts need some roof flashing.

                                                Best Sellers

                                                Oatey, #11830 Galvanized Base Roof Flashing 0.5-1.0 in. -...
                                                Shingle Flashings are designed to effectively seal round pipe penetrations, Slides over...
                                                Price: $7.05

                                                Oatey® Galvanized No-Calk® Solar Flashings are designed for commercial and residential applications that require a watertight seal for roof penetrations around the plumbing vent pipe. Self-sealing collar slides over pipe and requires no caulking. Oatey products have earned the trust of plumbing professionals for over 100 years. 28 gauge Galvanized steel baseCollar seals pipe ranging from 1/2 In to 1 In to accomodate solar panel mounting system postsRated 180°F continuous heat and approved for...

                                                Oatey, #11853 Galvanized Base Roof Flashing 2 in.
                                                Shingle Flashings are designed to effectively seal round pipe penetrations, Slides over...
                                                Price: $7.35

                                                Oatey®Galvanized No-Calk® Roof Flashings are designed for use in commercial and residential applications that require a watertight seal for roof penetrations around the plumbing vent pipe. The self sealing collar slides over the pipe and requires no caulking. Oatey products have earned the trust of plumbing professionals for over 100 years. Patented All-Flash® design allows use on multiple pipe sizes28 gauge Galvanized steel baseRated 180°F continuous heat and approved for Type B...

                                                Oatey, #11871 Galvanized Base Multi-Size Roof Flashing...
                                                Shingle Flashings are designed to effectively seal round pipe penetrations, seals...
                                                Price: $7.95

                                                Reduces inventory: 2 multi-size flashings fit 4 pipe sizes. One flashing accommodates 1-1/2", 2", and 3" pipes; the other, 3" and 4" pipes. Ring on collar tears off, allowing flashings to seal different pipe diameters. Simply remove the inner ring at the indicated point on the collar and you'll have a perfect leakproof fit for pipes from 1-1/2" to 4". Slides over pipe - for pitch to 40 degrees. Rustproof, stamped galvanized, 24 or 28 gauge. Non-fading, non-cracking and non-rusting bases and...

                                                Oatey, #11919 Thermoplastic Base Multi-Size Roof Flashing...
                                                Shingle Flashings are designed to effectively seal round pipe penetrations, seals...
                                                Price: $5.85

                                                Oatey® All-Flash® No-Calk® Roof Flashings can be used in commercial and residential applications where a watertight seal for roof penetrations around the plumbing vent pipe is required. The patented collar design allows for use on multiple pipe sizes. Oatey products have earned the trust of plumbing professionals for over 100 years. 1-1/2 in.–3 in. thermoplastic roof flashing11-1/2 in. x 15 in. non-fading, non-cracking plastic basePatented All-Flash® collar with tear-away ring for many pipe...

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