Home Repair (alt.home.repair) For all homeowners and DIYers with many experienced tradesmen. Solve your toughest home fix-it problems.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Posted to alt.home.repair
external usenet poster
 
Posts: 101
Default Concrete cavity - fill it up?

Often times when you install plumbing valves or electrical boxes on an
exterior concrete block wall you have to chip out concrete. Since
those are block wall once you chip it you have a six inch deep hole.

So after you installed everything, what do you do with the cavity
behind it? Do you fill it somehow?

Someone told me I should spray some foam filler in it...I am not so
sure, I have seen some of those when expanded basically "glue" onto
any surfaces, I think if I have an overspray it may expand to seal off
the shutoffs for a valve and if it's an electrical box it may be
flammable?

Any advise? leave it alone or fill it?

Thanks in advance,

MC
  #2   Report Post  
Posted to alt.home.repair
external usenet poster
 
Posts: 6,199
Default Concrete cavity - fill it up?

On Apr 7, 2:06�pm, wrote:
Often times when you install plumbing valves or electrical boxes on an
exterior concrete block wall you have to chip out concrete. Since
those are block wall once you chip it you have a six inch deep hole.

So after you installed everything, what do you do with the cavity
behind it? Do you fill it somehow?

Someone told me I should spray some foam filler in it...I am not so
sure, I have seen some of those when expanded basically "glue" onto
any surfaces, I think if I have an overspray it may expand to seal off
the shutoffs for a valve and if it's an electrical box it may be
flammable?

Any advise? leave it alone or fill it?

Thanks in advance,

MC


use expanding foam to fill voids, after cementing around at least one
side of the entrance.

you dont want air leaks, expanding foam helps keep cement from falling
in cavaties
Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Convert cold fill washing machine to hot and cold fill [email protected] UK diy 31 December 15th 20 12:27 AM
Concrete floor, cinder block wall -- how to fill gaps KB Home Repair 2 July 18th 07 01:07 AM
How to fill this gap? engwar Home Repair 2 May 15th 07 09:23 PM
thermabate cavity closers vs weatherbate cavity closers tom patton UK diy 0 April 10th 05 10:59 AM
breaking 6 inch concrete pad need a concrete breaker-follow up tom patton UK diy 5 April 6th 05 12:28 AM


All times are GMT +1. The time now is 06:36 AM.

Powered by vBulletin® Copyright ©2000 - 2023, Jelsoft Enterprises Ltd.
Copyright 2004-2023 DIYbanter.
The comments are property of their posters.
 

About Us

"It's about DIY & home improvement"