Wood between blocks of sidewalk concrete


  #1  
Old 02-26-22, 07:27 AM
A
Member
Thread Starter
Join Date: Jun 2020
Posts: 30
Received 1 Vote on 1 Post
Wood between blocks of sidewalk concrete

A friend of mine said he knows how to do concrete. We did 100 sq ft of sidewalk. He had me put 4x1" wood every 40 inches to allow for expansion of concrete. But then he realized the wood doesn't come out. He said he forgot to put oil on the wood beforehand.
He now says just leave the wood in there. It will rot eventually anyway.
But it looks weird. It will get uglier when it rots.
Even if I could get the wood out, the 1-inch space to me seems too much. Room for dirt and weeds to get in there.
Can you please give me any advice? Leave the wood in there? Or get it out and how? Some of the wood is redwood and the rest if cheap pine.



 
  #2  
Old 02-26-22, 07:55 AM
M
Member
Join Date: Sep 2019
Location: Canada
Posts: 1,936
Received 235 Votes on 213 Posts
I doubt you will get it out without damaging the concrete.

By the way your buddy does not know how to do concrete.

It does not look like you have any rebar in the sidewalk so you would have been just as well off using sidewalk blocks.
Also it does not look like an edging trowel was used so the edges will start chipping away.
 
XSleeper voted this post useful.
  #3  
Old 02-26-22, 08:03 AM
A
Member
Thread Starter
Join Date: Jun 2020
Posts: 30
Received 1 Vote on 1 Post
Many thanks for your feedback.
Would the wood staying in there damage anything in long-term?
Also can I do anything about fixing the edging to keep it from chipping away?
 
  #4  
Old 02-26-22, 10:16 AM
Norm201's Avatar
Member
Join Date: Sep 2013
Location: United States
Posts: 11,422
Received 595 Votes on 532 Posts
Grinding it to a bevel will help. Over the years as the wood rots away (and assuming the concrete is still solid) you replace the gap with a backer rod and fill it in with more cement or an elastomer.
 
  #5  
Old 02-26-22, 11:23 AM
N
Member
Join Date: Jan 2022
Posts: 56
Received 1 Vote on 1 Post
no i have never seen wood between concrete.
 
  #6  
Old 02-26-22, 11:25 AM
N
Member
Join Date: Jan 2022
Posts: 56
Received 1 Vote on 1 Post
But it looks weird. It will get uglier when it rots
LOL...i thnk your friend is weird. Nobody and i mean nobody leaves a piece of wood in concrete.
 
  #7  
Old 02-26-22, 12:05 PM
C
Member
Join Date: Mar 2007
Posts: 2,319
Received 228 Votes on 186 Posts
I had a sidewalk for many years that was poured concrete slabs separated by PT ties. The wood didn't rot and the sidewalk held up fine until we decided to move it.
 
  #8  
Old 02-26-22, 12:09 PM
Norm201's Avatar
Member
Join Date: Sep 2013
Location: United States
Posts: 11,422
Received 595 Votes on 532 Posts
But he didn't use PT wood.
 
  #9  
Old 02-26-22, 03:01 PM
Marq1's Avatar
Member
Join Date: Sep 2016
Location: USA MI
Posts: 9,510
Received 954 Votes on 866 Posts
It does not look like you have any rebar in the sidewalk
First off you dont use rebar for sidewalks, if anal then wire mesh would be the choice.

Wood between slabs is some what common, at least out west, composite would have been a better choice.

Not much you can do now, it's not like you really have any choice, your ok!
 
alex_t voted this post useful.
  #10  
Old 02-26-22, 06:22 PM
A
Member
Thread Starter
Join Date: Jun 2020
Posts: 30
Received 1 Vote on 1 Post
Also it does not look like an edging trowel was used so the edges will start chipping away.
Hello, can I sand the edges with an angle grinder to prevent chipping in the future? Would it need a special pad for concrete?
 
  #11  
Old 02-26-22, 06:53 PM
Norm201's Avatar
Member
Join Date: Sep 2013
Location: United States
Posts: 11,422
Received 595 Votes on 532 Posts
That would help, but I think you will need a concrete cutter.
 
  #12  
Old 02-27-22, 03:01 AM
M
Member
Join Date: Sep 2019
Location: Canada
Posts: 1,936
Received 235 Votes on 213 Posts
Marq1 is correct about the anal because if you do use rebar or steel mesh where I live in a couple years shoveling your walk becomes a pain in the a**.

The walk may have some space at the ends but the concrete is laid and then when it cures a bit it is cut.
And no we do not cut the rebar. The sidewalk will crack along the cuts the rest of the way through.
My walk is around 7 years old and I can shovel it without hitting uneven sections.

alex_t I would just leave it. I think the odds of messing it up are pretty high right now.
Perhaps it will be OK a lot depends on where you live and the soil/base under the sidewalk.
 
alex_t voted this post useful.
  #13  
Old 02-28-22, 03:15 PM
A
Member
Thread Starter
Join Date: Jun 2020
Posts: 30
Received 1 Vote on 1 Post
Hello, many thanks for all your comments.
Should I seal the concrete?
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: