Now that we’re back up and running, I’ve got what might seem a silly question. However, since I long ago determined that I have no shame when it comes to silly questions, I’ll put it out there in case there’s anyone else who didn’t get the initial memo.

This year was the first time I chalked my door for Ephiphany. Due to the fact that my front entry is protected by both a deep covered patio and a full storm door, the chalk is still as fresh as it was on Epiphany. Normally, is the chalk blessing allowed to “weather off” naturally, or is whatever remains cleaned off at some point? If it is cleaned off, when? Finally, considering that my door may be too protected for the chalk to weather off naturally, what should I do?

Yes, this is one of the many random thoughts that keep me awake at night....

Is it hurting anything? Leave it be -- you are bearing witness as a Catholic with that mark.

It stays up for as long as the elements will let it stay.

Leave it on until next year's Epiphany, at which point you wipe it off and start off with a new blessing!

Thanks - I kinda thought leaving it up was the right thing to do, but it’s good to know for sure.

I am unaware of this tradition

Its a blessing applied to houses each new year.

One takes blessed chalk and above the doors to the house you write the first two digits of the year + C+M+B + last two digits of the year. Then say a prayer. Some people use "K" rather than "C". See this article.....

https://detroitcatholic.com/news/daniel-meloy/20-c-m-b-19-epiphany-tradition-of-door-marking-evokes-magi-asks-gods-blessings-in-new-year

"Initials written in chalk symbolize names, gifts of the Wise Men as Catholics bless homes in 2019
WARREN — Mike Smigielski marks the new year by literally marking his home.

After Sunday Mass at St. Hyacinth Parish in Detroit, Smigielski marked the top doorpost of his Warren home with chalk, writing “20 + K + M + B + 19” in celebration of the Epiphany."

I will tell you that I believe this blessing saved our house during a really, really, really bad ice storm several years ago. A limb broke off a tree and landed on our roof. Zero damage. None. This thing was a huge limb and fell quite a distance. Made the biggest noise I've ever heard on a house. The family was all hunkered down in the basement with the wood burning stove, but for me it was too hot. So I slept in our 43 degree bedroom and it hit our roof right above that room. I thought the whole house was collapsing.

Other houses were severely damaged by smaller limbs. But our house was just fine.

It was my first time this year as well.

Except this priest used yellow chalk (what was available) and did it to the inside of the house door.

I wonder if that makes a difference?

Not that I know of.