Dear Bacon @ss,

While I dont particularly have all that much experience with colubrids, with not nearly ass much experience ass you, all of the colubrid keepers I know in Texas, do use heat tape and heating lamps for all of their colubrids, and they have been successfully breeding them for decades,  I know because I have gone and helped them out when they had issues or needed help of one sort or another.

I'm guessing then that by these answers I am seeing, there is more than one way to skin a deer!:)

Yours truly,

The Professional MVFer

Heat? Yes proper heat is needed. No heating pads are not needed, unless they are the heat source. Bottom line is meeting the needs of the snake (animal). There are many ways to do that and I believe it's what works best for you and snake.
 Most colubrids don't require high heat so most household temps will support them.  That's why I tell people that although I recommend a dome light with just a household bulb for heat and light that they will survive in the house as you will freeze ( no not litteraly) before killing snake per cold. I know mine are happy as they are healthly, active and have 100% hatch rate.
 Snakes are cold blooded so proper heat is important. How that heat is provided is not. Though doing it safely is important!

Colubrids should be fine at room temperature as long as it stays in the range that you said. Being from America Corn snakes , Kings, and MIlks, dont need heat as long as the room temperature is around 75- 80 degrees.

Even with temps around 80, I usually provide a warm spot of 82-85.  While you can get by with 80 I think you might occasionally have problems with temps in the 70's.  That said, cornsnakes and the like seem to get by pretty well on just about anything.  They digest in low 70's and even down into the upper 60's so it can be done no problem.  Mine do utilize the warm side on occasion though, so I think it's a good idea to provide it for them so they can make a choice of optimum temperatures for them.  And I do not use an incubator for cornsnake eggs.  I just keep them in the snake room and let them go.