How to Properly Measure for a New Door
08 Sep 2018

How to Properly Measure for a New Door


Installing a new door might seem a little daunting, particularly if you’ve never done it before. By far the most important thing to think about however, is how to measure for it.

Let’s run through the process of measuring for a new door.


Measuring the frame

It might be tempting to measure the door you already have in place. After all, if that fits, then surely your new one will, too?

Unfortunately, it’s not quite that simple.

Over its lifespan, an old timber door will warp. It’s far better to measure the frame into which your new door will be installed, instead.

If you’re going to be fitting an entirely new frame, then you will want to double check its size. Most frames will fit standard door sizes, which will help cut costs, but if you’re after something bespoke, then you’ll need to be extra precise.

Before you get started, you’ll need a tape measure.

Step 1: Measuring the height of a door

First, measure the height of the opening in three places: the left, right and middle of the door. These three measurements should be within ten millimetres of one another, or else the entire frame will need to be swapped out. You’ll want to use the shortest of these three lengths; that way you can be sure that the door will open and close properly.

When making these measurements, be sure to account for the height of the carpet, doormats or any other obstacles. That way you’ll be sure that the door can swing freely.

Step 2: Measuring the width of a door

Next, it’s time to measure the door’s width. You’ll do this in much the same way, except horizontally along the bottom, middle, and top of the frame. Use the shortest of the three measurements to determine the maximum size of the door.

Step 3: Measuring the depth of a door

The final step in measuring a door opening is the depth of the door. Internal doors typically come in three different thicknesses, the most common of which is 35mm (although thicker insulating and fire doors might be 40mm or 44mm). Measure at various points along the interior of the frame to be sure of which you need.



Read 2227 times Last modified on Thursday, 04 October 2018 07:36
Rate this item
(1 Vote)


  • Vacuum gauge
    posted by Vacuum gauge Monday, 03 August 2020 11:26 Comment Link

    Amazing blog! Is your theme custom made or did you download it from somewhere?

    A theme like yours with a few simple adjustements would really
    make my blog jump out. Please let me know where you got your design. Appreciate it

  • Launa
    posted by Launa Monday, 03 August 2020 11:18 Comment Link

    What i do not realize is in truth how you are not really
    a lot more neatly-favored than you may be now.
    You're so intelligent. You understand therefore
    considerably in terms of this matter, made me in my view believe
    it from so many numerous angles. Its like men and women don't seem to be
    involved unless it is one thing to accomplish with Woman gaga!
    Your personal stuffs great. All the time take care of it

  • onlinexxi
    posted by onlinexxi Monday, 03 August 2020 09:40 Comment Link

    I visited various websites except the audio feature for audio songs current at this web
    site is in fact excellent.

  • Jeramy
    posted by Jeramy Monday, 03 August 2020 09:19 Comment Link

    Yes! Finally something about website.

  • Lithium Battery Lab Line
    posted by Lithium Battery Lab Line Monday, 03 August 2020 08:43 Comment Link

    Excellent, what a weblog it is! This blog provides helpful facts to us, keep it up.

  • Mandy
    posted by Mandy Monday, 03 August 2020 07:04 Comment Link

    Really when someone doesn't know then its up
    to other viewers that they will assist, so here it occurs.

  • Fred
    posted by Fred Monday, 03 August 2020 05:35 Comment Link

    Does your blog have a contact page? I'm having problems locating it
    but, I'd like to shoot you an e-mail. I've got some ideas for your blog you
    might be interested in hearing. Either way, great blog and
    I look forward to seeing it expand over time.

  • 特快国际文件
    posted by 特快国际文件 Monday, 03 August 2020 05:30 Comment Link

    Having read this I believed it was really enlightening.

    I appreciate you finding the time and effort
    to put this informative article together. I once again find myself spending way
    too much time both reading and commenting. But so what, it was still worthwhile!

  • glovebox
    posted by glovebox Monday, 03 August 2020 04:53 Comment Link

    Hi there to every one, the contents present at this web page are genuinely remarkable for people knowledge, well, keep up
    the good work fellows.

  • 个人包裹快递
    posted by 个人包裹快递 Monday, 03 August 2020 03:39 Comment Link

    Amazing issues here. I am very satisfied to peer
    your post. Thanks so much and I'm taking a look ahead to contact you.
    Will you kindly drop me a e-mail?

Leave a comment

Make sure you enter all the required information, indicated by an asterisk (*). HTML code is not allowed.


SabalanDoor industrial group is one of the biggest manufacturers of anti-theft, fire, interior, lobby and villa entrance doors in the country. What is created in this group is the result of the efforts of Iranian professional experts.

SabalanDoor Products

SabalanDoor is by your side

Top Products

Contact us

Unit 14, Floor 5, No 192

next to Ayatollah kashani Telecommunication
West Ferdows Blvd, 2nd Sadeghiyeh Sq
Tehran, Iran

Tel: +982144074786
Email :