FAQs

Frequently Asked Questions

SHOULD I USE EPDM OR SILICONE?
EPDM is the material of choice except for high temperature conditions. Check out the Materials Specifications Chart which offers the temperature ranges of EPDM and Silicone.

DO I NEED GRAY OR BLACK EPDM?
It is up to you. Some people swear that gray looks better than black on a metal roof. Yet others like black. Product performance is the same for both gray and black.

SHOULD I USE A SQUARE BASE OR A ROUND BASE?
Again it is up to you. Some people prefer round and some prefer square. There may be instances in which the hole size that was made for the penetration was cut too large and the flashing base size may become more critical. Refer to the appropriate sizing chart for base dimensions when base size is an issue.

WHAT IF I CAN'T SLIDE THE FLASHING OVER THE PENETRATION?
See our About Retrofits section.

WHAT MATERIAL DO I NEED TO USE IF I HAVE A STOVE OR CHIMNEY PIPE?
In any application where temperature is a concern you must refer to the temperature range testing to determine which boot is needed. Check out the Materials Specifications Chart which offers the temperature ranges of EPDM and Silicone.

To summarize though, any application with temperatures that consistently stay below 212º F and/or over -65º F should be able to use a standard EPDM flashing. Instances in which the temperatures consistently go above 212º F up to 437º F and below -100º F will need to use a Silicone flashing. Any applications that will reach over 437º F and/or under -100º F should not be used with any of the pipe flashings available on this site.