Foam around exterior basement windows


  #1  
Old 05-26-21, 02:32 PM
S
Member
Thread Starter
Join Date: Nov 2008
Posts: 68
Upvotes: 0
Received 1 Upvote on 1 Post
Foam around exterior basement windows

Can anyone explain this to me?

not the original owner so not sure what was done here. I have a block foundation and each of the windows has about a 3-4Ē piece of foam insulation (Iím assuming) running along the sides of the windows as you see in this picture where part of it is exposed.

I am looking to get my foundation parging re-done and noticed it. Not sure what itís purpose is or if it can be removed/replaced as it ages.

 
  #2  
Old 05-26-21, 03:54 PM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Posts: 26,190
Received 1,701 Upvotes on 1,525 Posts
My guess is that the entire foundation is insulated that same way then they parged over it with a modified acrylic foundation coating.

So, no... Don't remove it.
 
  #3  
Old 05-26-21, 04:11 PM
S
Member
Thread Starter
Join Date: Nov 2008
Posts: 68
Upvotes: 0
Received 1 Upvote on 1 Post
Itís not. Just these strips around the windows. Itís obvious because where the old parge is flaking off you can see that itís cinder block.
 
  #4  
Old 05-26-21, 04:59 PM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Posts: 26,190
Received 1,701 Upvotes on 1,525 Posts
Regardless, I dont know why you would remove it.
 
  #5  
Old 05-27-21, 04:01 AM
T
Member
Join Date: Jul 2003
Location: California
Posts: 1,865
Received 40 Upvotes on 33 Posts
Are the windows retrofitted or replacements? The foam is there for a reason. It might not be a good reason, maybe a shortcut or best someone could do with what they had to work with. To take off that foam might open a can of worms. It is likely adhered with mortar and the foam will come off and leave the mortar behind. Then you will have a new problem to deal with. And maybe the problem is only in one window and the rest are done for symmetry.If you are redoing the foundation finish you will give the foam another coat, too thus more protection.
 
  #6  
Old 05-27-21, 05:35 AM
S
Member
Thread Starter
Join Date: Nov 2008
Posts: 68
Upvotes: 0
Received 1 Upvote on 1 Post
All four basement windows have it on either side.

the house was originally a bungalow that was knocked down and rebuilt about 10 years ago so I donít have much history as Iím not the original owner.

I do know that these guys were definitely fans of rigid foam board insulation as the entire interior of the basement walls have it installed behind the drywall.

on that note, seems to be keeping the basement cool and dry. Just not sure about the outside as I know bugs love foam board.
 
 

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