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Home > Square Penetration Flashing >
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Square Pentration Flashing |
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- simple solution to flashing a square penetration through a metal roof
- the aluminum base on the upper lip is corrosion resistant and allows the flashing to conform to any panel configuration and/or roof pitch
- available in EPDM, a flexible material that is resistant to ultraviolet rays, cracking & weathering
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Test Type
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EPDM |
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Advance ozone resistance test
@ 500 pphm |
70
Hours |
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High Temperature:
Intermittent-
Continuous- |
+275ºF
+212ºF |
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Low Temperature:
Resistance tested to-
Tensile strength- |
-65ºF
1,450 psi | 
| 1. |
Choose the appropriate Square Penetration Retrofit Masterflash®. If necessary trip the opening to to about 20% smaller than the pipe diameter. |
| 2. |
Wrap the Retrofit around the pipe and install all snap rivets to seal the flange. |
| 3. |
Press the Masterflash® down, bending it to conform to the roof profile or roof irregularities. A blunt tool will help press the flashing into tight roof angles. |
| 4. |
Apply a silicone selant between the Masterflash® base & the roof. |
| 5. |
Use fasteners to complete sealing. For UPC installation, fastener spacing may not exceed 1½". |
| 6. |
Apply sealant to any gaps. |
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Size |
Penetration Size |
Base
Size |
Opening
Diameter |
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#1 |
2½" to 4" |
8" |
2½" |
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#2 |
2¼" to 5" |
15¾ |
2¼" |
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