DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Bricks, Masonry and Concrete > Concrete porch problems




Reply
 
Thread Tools Search this Thread Display Modes
Old 08-19-2008, 04:32 PM  
irmedic
Junior Member
 
Join Date: Aug 2008
Posts: 2
Default Concrete porch problems

My room mate and I are having problems with our front porch sinking. We placed stones under the part that was sinking about a year ago and a couple of days ago we used an expandable foam for a quick fix, but now we want to fix the problem the right way. We have used a jackhammer to break the concrete up and now we are trying to figure out how to set the new concrete slab correctly. Does anyone know have to do this? Any information would be great. Thank you.



__________________
irmedic is offline  
 
Reply With Quote Quick reply to this message
Old 08-19-2008, 05:50 PM  
glennjanie
Senior Member
 
Join Date: Mar 2006
Posts: 2,990
Liked 2 Times on 2 Posts

Send a message via AIM to glennjanie
Default

Welcome IRMedic:
Porches so often become a waste dump for the contractors working in the house. This waste has a tendency to settle and decompose, leaving the floor to settele.
After you have removed the concrete, make sure there are no materials in the fill that will decompose and settle over the years. The fill should be thorughly compacted dirt up to 4" below the concrete. The last 4" of fill should be crushed limestone (#6 stone, DGA, or #54 stone).
If the porch is abutting a brick wall you need to break out a brick every 4' and place a 16" #4 reinforcing bar in the hole, extending out into the concrete. Allow the concrete to fill the hole for a key way to hold the back edge of the floor. Place heavy building paper over the holes in the concrete block foundation to hold the concrete from filling all the blocks. Use 6x6 10/10 reinforcing wire at mid point height in the concrete.
We would appreciate pictures before and after to see how it turned out.
Glenn



__________________
glennjanie is offline  
 
Reply With Quote Quick reply to this message
Old 08-19-2008, 08:33 PM  
irmedic
Junior Member
 
Join Date: Aug 2008
Posts: 2
Default Concrete porch problem part 2

Thank you so much for the reply. After we jackhammered out the porch we now have found that there is a gap in between the slab of the house and concrete blocks (about 1 to 1.5"). We are not sure what to make of this... is this an expansion joint? or do we have a bigger problem to deal with now? We had a problem with water collecting around the front porch for a long time because of street and driveway runoff when it rained. We corrected this runoff (water) problem. Below I have attached a picture just in case I confused you. Any information would be helpfull. Thank you.

__________________
irmedic is offline  
 
Reply With Quote Quick reply to this message
Old 08-20-2008, 02:26 PM  
glennjanie
Senior Member
 
Join Date: Mar 2006
Posts: 2,990
Liked 2 Times on 2 Posts

Send a message via AIM to glennjanie
Default

Hello IRMedic:
The picture didn't show up; perhaps you could try again.
A residence would not have a 1 to 1-1/2" expansion joint; you may have a bigger problem.
It is good that you corrected the runoff problem; that should eliminate future problems.
If we are talking about a space between the house proper and the concrete blocks supporting the porch, then you have a porch foundation that is settling away from the house. If the house is over 10 years old the settling should be over by now, you could simply use mortar mix to fill the big joint and give you some continuity. You may want to put some rolled up paper in the joint so that you only have to fill 1" deep with the mortar. A Sackrete or Quickrete mortar mix would be sufficient, just add water but keep it very stiff (just dampen the mix so that it will make a ball in your hand but fall apart when you drop it). You will need a sponge trowell to press the mortar in and sprinkle it and re-sponge it at 15 minute intervals for 4 or 5 times. This will keep the mortar from shrinking away from the blocks or the house and leaving a crack.
Glenn

__________________
glennjanie is offline  
 
Reply With Quote Quick reply to this message
Old 08-20-2008, 02:36 PM  
Charlie
Member
 
Join Date: Jun 2008
Posts: 39
Default

Quote:
Originally Posted by glennjanie View Post
Porches so often become a waste dump for the contractors working in the house. This waste has a tendency to settle and decompose, leaving the floor to settele.
That is a really good point and something that I hadn't ever really though about, but have been guilty of doing myself on occasion. I will have to be more careful in the future.


__________________
Charlie is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
What is the best thing to fill a concrete porch? derrick27 Bricks, Masonry and Concrete 3 12-04-2008 03:24 PM
Converting concrete porch to living area floor DSGarcia Bricks, Masonry and Concrete 1 11-29-2008 07:07 AM
Concrete porch and steps rookiepb Bricks, Masonry and Concrete 4 11-07-2008 06:10 AM
Need advice on sinking tile porch floor preed General Home Improvement Discussion 2 07-22-2008 03:15 PM
Fixing concrete porch jana@transassociatesltd.c Bricks, Masonry and Concrete 1 06-01-2008 11:05 AM

Newest Threads

LATEST SPONSOR DEALS