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How to Affix a Mezuzah

How to Affix a Mezuzah


No, it’s not a Jewish doorbell. It’s a home security device called a mezuzah, and it’s wired into the Ultimate Protection Agency.

The software inside this gadget is a scroll with the words beginning, “Hear O Israel, the L‑rd is our G‑d; the L‑rd is one.” Those powerful words sum up the mandate of a Jew: to infuse the world with G‑d’s oneness.

Regarding these words, G‑d has commanded us, “And you shall inscribe them on the doorposts of your home, and on your gates” (ibid., verse 9). Hence the mezuzah: a parchment scroll inscribed with the verses of the Shema prayer is affixed to the right doorpost of every room in a Jewish home.

In addition to its role as a declaration and reminder of our faith, the mezuzah is also a symbol of G‑d’s watchful care. The name of G‑d, Sha-dai, which appears on the reverse side of the parchment, is an acronym for the Hebrew words which mean “Guardian of the doorways of Israel.” Placing a mezuzah on the doors of a home or office protects the inhabitants—whether they are inside or out.

For more information see What Is a Mezuzah? and The Scroll Inside.

What Do I Need?

To properly affix Mezuzahs to your doorposts you will need:

  1. Kosher mezuzah scrolls, one for each qualifying doorway in your home or office.
  2. Protective cases in which the rolled parchment scrolls are inserted.
  3. A measuring tape and pencil to mark the spot on the doorpost where the Mezuzah is to be affixed.
  4. Hammer and nails, screws and a drill, or as a last resort, an industrial-strength glue or double-sided tape, with which to affix the mezuzah.
  5. A printout of this page with the instructions and blessing.

2. Which Rooms Require a Mezuzah?

Before you go out to purchase your mezuzahs, you need to figure out how many your house requires. Which doorways need a mezuzah?

A mezuzah is affixed to every doorway in your home or office that leads into a proper room, except for the bathroom. What qualifies as a "room"? Any enclosed space that's at least 6.5 ft. x 6.5 feet. This includes vestibules, hallways, large walk-in closets, etc.

If there are several doorways leading into a room, each doorway requires its own mezuzah. Doorways without doors (e.g., archways between rooms) also require a mezuzah. Count the doorways that qualify to determine the number of mezuzahs you need.

For more information see Which Rooms Require a Mezuzah?.

3. How to Get Kosher Mezuzahs?

Now that you know how many mezuzahs you need, do some research to find the right place to purchase them. Because mezuzahs must be made according to very exact laws and specifications, only an expert can determine if a mezuzah is indeed “kosher.”

Some basics: The mezuzah must be hand-written by a competent ritual scribe on specially prepared parchment with the specific types of quill and ink mandated by tradition. All too often, printed or improperly prepared mezuzahs, or even empty cases, are fraudulently sold. So make sure to purchase your mezuzahs from a trusted religious source, or ask your rabbi for help.

The mezuzah scroll is rolled from left to right and placed right-side-up in a protective case.

If you will be putting your mezuzah into a case, carefully insert it in a way that the letter Shin will be upright and facing toward the doorway. Also take care that the role not be pinched or bent in the process.

For more information see The Scribal Art.

4. Mark the Spot!

A mezuzah is affixed on the right doorpost, approximately, at the bottom of the top third of the doorpost.

For the front door, the right doorpost is the doorpost to the right of the person entering from the street. In internal doorways, it is the doorpost to the right of a person entering in the direction towards which the door opens. If there is no door, think about importance and function: the dining room is more important in the hierarchy of the home (it's used more formally) than the kitchen, so in a doorway between the dinning room and the kitchen, the mezuzah should be on the right of the person entering the dining room.

To determine the proper height at which to affix the mezuzah, use a measuring tape to get the total height of the doorpost. Divide it into three, and measure that amount from the top of your doorpost. Use a pencil to mark the spot. Your mezuzah should sit right atop that mark.

For more information see Affixing the Mezuzah.

5. The Blessing

You are now ready to affix the mezuzah. The blessing is recited once, before putting up the mezuzahs. You will put up the first mezuzah on one of the most important doorways in your home, such as your bedroom. Have the mezuzah and tools in hand. As you recite the blessing, keep in mind that it applies to all the mezuzahs you will presently affix in your home.

Recite the blessing. If you can read and understand the original Hebrew, say it in Hebrew. Otherwise, you can say it in any language you understand.

Here’s the Hebrew text:

בָּרוּך אַתָּה אַדָנָ-י אֶלוֹהֵ-ינוּ מֶלֶך הָעוֹלָם אַשֶר קְדִשָנוּ בְּמִצְווֹתָיו וְצִיווָנוּ לִקְבּוֹעַ מְזוּזָה

Here’s how it sounds:

Baruch Atah A-do-nai Elo-heinu Melech haolam asher kideshanu bemitzvotav vetzivanu likboa mezuzah.

Here’s what it means:

Blessed are you, G‑d our G‑d, King of the Universe, Who has made us holy with His commandments and commanded us to affix a mezuzah.

6. Affix the Mezuzah

The mezuzah must be permanently attached to the doorpost. Use hammer and nails, glue, or a durable double-sided tape. Position the mezuzah above the one-third mark you've made. It should be towards the outer edge of the doorpost, on a slant with the top pointing inwards to the room.

Immediately after reciting the blessing, affix the mezuzah. Do not allow interruptions as you then proceed to the remaining rooms in your home. Remember to affix each mezuzah according to the above-mentioned specifications.

7. Regular Checkups

You have now affixed the mezuzahs. Your home proudly displays its Jewish identity, and you've tapped into this unique spiritual connection. But you're not finished yet. The mezuzah is a holy object that must be properly maintained.

At least twice in seven years, we take down our mezuzahs and have them professionally checked to ascertain that they are intact. The scribe examines the scrolls to ensure that no letters have been cracked or erased and that the mezuzah is still good. Our vigilance keeps our mezuzahs performing their function: bringing holiness, protection and merit to our home.

For more information see Caring for your Mezuzah and Check Your Mezuzahs!.

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Discussion (67)
March 17, 2017
Re: Bracha when replacing Mezuza
Please see the source for this in Chovat Hadar chapter 11 footnote 26.
Simcha Bart for
January 31, 2017
Re: 7-year-check
Not everything is noticeable to the untrained eye. What can seem okay to you and me will stand out to a professional. Sure, you can just replace your mezuzah every few years, but that would be a waste if there is nothing wrong with it.
Eliezer Zalmanov
January 29, 2017
Open floor plans & barn doors
The front door of my small apartment leads directly into a hallway, which then leads to the open living/dining/kitchen space. The hallway is about 15-20 feet long by about 4 feet wide; I assume that by the time I reach the (doorless) living space I should have another mezuzah for that room (the hallway having distanced the front door's mezuzah too far from the living space). Is that correct? Also, I read somewhere that doors without a frame, where the door abuts the wall, should not have a mezuzah. Is this correct? My bedroom has a sliding barn door, so no door frame. Thank you!
January 26, 2017
Why do I need a "professional" to check my mezuzah scroll every 7 years? Why can't I do this myself or just replace it with a new scroll, regardless of whether the old one is bad?
December 14, 2016
To Sussie
Start with the one on the main entrance door and the one on your bedroom. Staff
December 14, 2016
Which door is most important?
I am no longer working as I am disabled and so my funds are limited. I want to buy one at a time. Which door is most important in the house? That is the one I will start with.
Sussie Due
November 8, 2016
Bracha when replacing Mezuza
What is the source for following statement?

"If only the door is being replaced and the Mezuzah was removed for less than 24 hours then no Beracha is said. If it was for more than 24 hours, then a Beracha should be said."
November 1, 2016
Where are the "O"'s in lord and God ???
October 2, 2016
Reminds me...
Reminds me of the time a Ukrainian landlady saw the mezuzah wed affixed to the door and said 'oh -- you've but in signalizatzia (security system)? That's good!
Leah Lipszyc
August 30, 2016
Mezuzah Beracha
If only the door is being replaced and the Mezuzah was removed for less than 24 hours then no Beracha is said. If it was for more than 24 hours, then a Beracha should be said.
Simcha Bart for
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