What kind of bricks are these?

Came across this on an inspection the other day. I’ve never seen this type of brick before. At first glance I thought there was some kind of damage, but on second look it seems that this is a type of decorative element? Picture is of a chimney section that is located indoors (basement area). About 10% of the bricks had this kind of “squeezed out” look to them. Would love to know more about this type of brick. Thanks.

Looks like granite to me. Why it is there, I am not sure. Possible tie-in, beam or decorative?


I thought that to0, at first. He is actually asking about the uneven (bulging) brick faces.

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Possibly a block of unknown stone type mortared in to cover where an old cleanout door used to be? Those are usually 3 brick courses in height.

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You’re right. They look like little bread loaves.

“Decorative” brick. Also look for “Clinker” bricks which started as mistakes, but now are produced on purpose.

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Used to be only spam posts got flagged. Now you can barely post anything without offending the multitude of snow flakes that have infiltrated this board.


Screw them!


I’ll go with your reply. Thanks for the info and the technical term. Seems to be a type of “clinker” brick. I did some research on the internet and it seems like this style brickwork can be as crazy as the builders imagination.

I refer to that aesthetic as Two Tone brown, Rustic. Need size please.

1: Measure Brick Dimensions to get size. Standard or Metric. What are standard brick sizes?

According to the Brick Industry Association, the most common brick sizes range from 31/2" x 21/4" x 7 5/8" to 3 5/8 x 3 5/8 x 11 5/8" as measured by Depth x Height x Length.

Metric sizes. * Modular - 92 x 57 x 194 mm. Length 194 mm (7 5/8") …

  • Queen - 70 x 70 x 194 mm. Length 194 mm (7 5/8") …
  • Metric Norman - 90 x 57 x 290. …
  • Norman - 92 x 57 x 293 mm. …
  • Premier Plus - 90 x 79 x 257 mm. …
  • Premier Executive - 70 x 79 x 257 mm. …
  • Metric Jumbo - 90 x 90 x 290 mm. …
  • Utility - 92 x 92 x 293.

I like curiosity. Things that deepen our “Well of Knowledge” are good, even if we rarely, if ever, draw them from our well, in my not-so humble opinion.

As far as someone flagging your comment, this may not be the biz for such a delicate little flower.


My best guess is older hand made bricks. How old was the house??


Quite possibly clinkers.
Or, decorative bricks made that way. The difference is a true clinker is going to be hard and brittle weighing more per unit volume. A decorative brick would have normal consistency, just a special shape. Your bricks are all pretty uniform in overall shape, they just have that bread loaf shape. I’m guessing they were made that way on purpose and fired at normal temperatures.

Not a defect of course.
A good thing.

Show pictures of the outside to see how they weather vs. under the house.

Here’s a photo of the outside. House is 60 years old.