Driveway is separating from house?

Old 08-30-22, 10:10 PM
Thread Starter
Join Date: Apr 2004
Location: Calgary, Canada
Posts: 487
Received 0 Upvotes on 0 Posts
Driveway is separating from house?

We are looking at purchasing a property that has a gap between the house and the driveway. Is this a major concern? Any ideas on what causes this and/or how it should be addressed?


Old 08-31-22, 01:57 AM
Marq1's Avatar
Join Date: Sep 2016
Location: USA MI
Posts: 9,745
Received 1,210 Upvotes on 1,098 Posts
Over time concrete slabs heave and move with the seasons, some more than others. Water and drainage has a big part.

I have seen a lot worst. Sealing up the gaps with self leveling sealant will keep water out and help the situation not get worse.

That is on the fall to-do list for me!
C-COOP voted this post useful.
Old 08-31-22, 04:33 AM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Posts: 27,230
Received 1,958 Upvotes on 1,755 Posts
That hasn't slid, it was poured that way. And the area in front of the brick that has broken was because they should not have tried to pin it to the foundation with rebar. The driveway needs to float.

The gaps simply need to be filled with backer rod and a self levelling concrete sealant.
C-COOP voted this post useful.
Old 08-31-22, 05:09 AM
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 28,118
Received 2,256 Upvotes on 2,009 Posts
I agree. It has not really moved away from the house. If you look at the gap near the house it is much smaller. The larger appearing gap in front of the garage door may have been been because the concrete workers could use their rounding over edge float in that area. This creates a slightly rounded edge less likely to chip off.
C-COOP voted this post useful.
Old 08-31-22, 08:14 AM
Norm201's Avatar
Join Date: Sep 2013
Location: United States
Posts: 10,969
Received 729 Upvotes on 644 Posts
Fill it with a backer rod so that about a 1/4" is left open. Then use a cement filler or repair patch. It will need to be done again in few years depending on the weather and use.
C-COOP voted this post useful.

Thread Tools
Search this Thread
Ask a Question
Question Title: