How thick lumber should I buy for interior door ?

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Forum topic by Dmitriy_S posted 07-14-2018 01:08 AM 535 views 0 times favorited 6 replies Add to Favorites Watch
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17 posts in 595 days

07-14-2018 01:08 AM

I’m a noob. This is my first project. I want to build interior door using walnut lumber. Finished door thickness should be 1 3/8 inch. I cannot decide between 6/4 and 8/4 lumber. Please advice, what thickness should I start with ?

thank you in advance.

6 replies so far

View bondogaposis's profile


5605 posts in 2958 days

#1 posted 07-14-2018 01:17 AM

You making frame and panel door or hollow door?

-- Bondo Gaposis

View Rich's profile


5141 posts in 1196 days

#2 posted 07-14-2018 01:23 AM

I start with 8/4 lumber just to play it safe. 6/4 is likely going to be 1-3/8 to 1-7/16 inch to start with and just doesn’t give you enough wiggle room.

For an interior door you can get by with 4/4 for your panels though, since the groove on the stick cuts will be 3/8”, you still have plenty to properly do a raised panel.

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

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17 posts in 595 days

#3 posted 07-14-2018 01:28 AM

It will frame and panel door.

View 000's profile


2859 posts in 1506 days

#4 posted 07-14-2018 03:43 AM

This is the quickest, easiest and smartest way to build the project you desire.

- kjalal

Spam….Teds woodworking plans…don’t click

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8812 posts in 3183 days

#5 posted 07-14-2018 03:53 AM

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17 posts in 595 days

#6 posted 07-14-2018 04:17 AM

Looks like 8/4 is the conclusion.

Thank you all.

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