Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-23-2013, 04:05 PM   #1
Newbie
 
Join Date: Feb 2013
Location: Surrey, British Columbia, Canada
Posts: 21
Share |
Default

Cutting concrete slab


Hi everyone,

I'm starting my first post with a question regarding my concrete patio demolition. The main reason I'm doing this in the first place is the patio slopes toward the house, and in heavy rain (and I live in a temperate rain forest), I am getting some water in my crawl space in that corner, so I want to reslope, redirect the downspouts away from the house, and eventually put pavers down instead of concrete.

The patio sliding door actually sits on the same patio, then just inside that part of the house is on slab,which is maybe 1/4 " higher than the patio (the crawl space begins just to the right of the door).

If I rent a concrete saw, how would I cut it flush with the door, or should I leave a bit of a "threshold" anyway. I just thought it might look funny going from the concrete to pavers.

Any help would be appreciated.

McLaren is offline   Reply With Quote
Old 02-23-2013, 04:10 PM   #2
Newbie
 
Join Date: Feb 2013
Location: Surrey, British Columbia, Canada
Posts: 21
Default

Cutting concrete slab



McLaren is offline   Reply With Quote
Old 02-23-2013, 04:27 PM   #3
Master General ReEngineer
 
Bondo's Avatar
 
Join Date: Dec 2007
Location: Chaumont River, Ny.
Posts: 3,673
Default

Cutting concrete slab


Quote:
If I rent a concrete saw, how would I cut it flush with the door, or should I leave a bit of a "threshold" anyway. I just thought it might look funny going from the concrete to pavers.
Ayuh,.... yer pictures ain't workin', but I'd go with a threshold, say 4" or 6" or 8", whatever works....

With the right saw, ya oughta get a decent finish for the transition....

Will the pavers be flush, nearly so, or step-down,..??
Bondo is offline   Reply With Quote
Old 02-23-2013, 05:24 PM   #4
Newbie
 
Join Date: Feb 2013
Location: Surrey, British Columbia, Canada
Posts: 21
Default

Cutting concrete slab


Thanks Bondo, yeah, for some reason I had no option of posting attachments, so tried to link to Picasa, and that failed. I seem to have an attachment icon now, so hopefully it works.

I had planned on the pavers being flush with the existing concrete, and I guess I could find a concrete stain that is similar in color to the pavers we choose. Of course, I'll have to patch those cracks too.

Not having to cut flush with the slider certainly would make things easier.

BTW, the first foot or so slopes away from the house, but then slopes up.
Attached Thumbnails
Cutting concrete slab-picture-378.jpg   Cutting concrete slab-picture-379.jpg   Cutting concrete slab-picture-380.jpg  
McLaren is offline   Reply With Quote
Old 02-23-2013, 05:37 PM   #5
Master General ReEngineer
 
Bondo's Avatar
 
Join Date: Dec 2007
Location: Chaumont River, Ny.
Posts: 3,673
Default

Cutting concrete slab


Ayuh,.... In yer 1st picture, lower right corner of the door frame, it appears the slab is under the moldin', 'n not under the actual door...

Ya might wanta take it All out...
Bondo is offline   Reply With Quote
The Following User Says Thank You to Bondo For This Useful Post:
oh'mike (02-24-2013)
Old 02-23-2013, 05:46 PM   #6
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 25,898
Default

Cutting concrete slab


That slab pored even with the threshold is not only a code violation but a 100% sure way to get water to come in under that door and take out the flooring inside.
It was suppost to be at least 4" below.
joecaption is online now   Reply With Quote
The Following User Says Thank You to joecaption For This Useful Post:
itsreallyconc (02-24-2013)
Old 02-24-2013, 03:20 AM   #7
Member
 
Join Date: Jun 2009
Location: hilton head & atlanta
Posts: 3,046
Default

Cutting concrete slab


don't know what you call a 'concrete saw' but i'd use a demo saw & dri-cut conc blade but 1st tape up the door to prevent dust from seeping into the house,,, unlikely your patio's connected to the bldg bsmt wall so, after excavating the conc, get the rest of the patio conc hiding under the door,,, they do make flush cut arbors for conc saws but you can't use OR find 1 its a pro-only item
__________________

if you hear it from a guy in the apron store, be VERY suspicious the mtl/method will work,,, when it time to build something together, they won't answer phones NOR help
itsreallyconc is offline   Reply With Quote
Old 02-24-2013, 07:57 AM   #8
Member
 
Join Date: Jan 2013
Posts: 43
Default

Cutting concrete slab


A gas powered wet concrete saw is a better option to cut your concrete slab. Your patio is probably not more than 4" thick. The saw will cut all the way through. Also a sledge hammer may help you!
leenamark1 is offline   Reply With Quote
Old 02-24-2013, 08:02 AM   #9
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 25,898
Default

Cutting concrete slab


How do you plan on hauling all this away and do you have someplace to haul it to?
Someone with a bob cat and a dump truck could have that out, regraded and hauled away in a couple hours.
joecaption is online now   Reply With Quote
Old 02-24-2013, 09:53 AM   #10
AHH, SPANS!!!
 
Join Date: Apr 2012
Location: Durham NC
Posts: 1,641
Default

Cutting concrete slab


a target saw with either a garden hose hook up or have a friend hold the hose while you cut. that is some dusty mess and will cover your entire house with dust and the neighbors... it does not take much water to keep the dust down
hand drive is offline   Reply With Quote
Old 02-24-2013, 01:04 PM   #11
Newbie
 
Join Date: Feb 2013
Location: Surrey, British Columbia, Canada
Posts: 21
Default

Cutting concrete slab


Quote:
Originally Posted by Bondo View Post
Ayuh,.... In yer 1st picture, lower right corner of the door frame, it appears the slab is under the moldin', 'n not under the actual door...

Ya might wanta take it All out...
The door is definitely sitting on the patio slab. We had new windows and sliding doors installed when we bought the house in 2005, so I saw what was underneath...but that's another story.
Attached Thumbnails
Cutting concrete slab-picture-386.jpg  
McLaren is offline   Reply With Quote
Old 02-24-2013, 01:27 PM   #12
Newbie
 
Join Date: Feb 2013
Location: Surrey, British Columbia, Canada
Posts: 21
Default

Cutting concrete slab


Quote:
Originally Posted by joecaption View Post
That slab pored even with the threshold is not only a code violation but a 100% sure way to get water to come in under that door and take out the flooring inside.
It was suppost to be at least 4" below.
Maybe the codes were different back in 1978 when this house was built, and I know codes do vary from region to region (I'm up in BC, Canada BTW), but it only makes sense that the door should be higher. If this is present day code I now have the perfect opportunity to make it right.

We've never had any hint of water inside the patio door, (it is an issue at the side door however), but we're helped by the cover of the balcony above, and the drain by the door. I just don't understand why when the house was built they didn't build it up so the ground, and more specifically, the patio, slopes away from the house - and I've seen this problem at a lot of other homes as well. The front of our house has a good slope though, but as I mentioned, I am planning on redirecting the downspouts away from the house; why overburden the drain tile system, and I think that might be code here now too.
Attached Thumbnails
Cutting concrete slab-picture-381.jpg   Cutting concrete slab-picture-382.jpg   Cutting concrete slab-picture-387.jpg  
McLaren is offline   Reply With Quote
Old 02-24-2013, 01:54 PM   #13
Newbie
 
Join Date: Feb 2013
Location: Surrey, British Columbia, Canada
Posts: 21
Default

Cutting concrete slab


Quote:
Originally Posted by itsreallyconc View Post
don't know what you call a 'concrete saw' but i'd use a demo saw & dri-cut conc blade but 1st tape up the door to prevent dust from seeping into the house,,, unlikely your patio's connected to the bldg bsmt wall so, after excavating the conc, get the rest of the patio conc hiding under the door,,, they do make flush cut arbors for conc saws but you can't use OR find 1 its a pro-only item
http://www.johnstonrentalcenter.com/CreteSaw65hp.html
I'm thinking maybe leaving a threshold a few inches in front of, and to the sides of the door, then having the pavers at least 4" below that should be good, so it meets code like joecaption mentioned (I should - and should have- contact the city to see if I need a permit).
McLaren is offline   Reply With Quote
Old 02-24-2013, 02:04 PM   #14
Newbie
 
Join Date: Feb 2013
Location: Surrey, British Columbia, Canada
Posts: 21
Default

Cutting concrete slab


Quote:
Originally Posted by leenamark1 View Post
A gas powered wet concrete saw is a better option to cut your concrete slab. Your patio is probably not more than 4" thick. The saw will cut all the way through. Also a sledge hammer may help you!
That was the plan, and I did break some of it with the sledgehammer already. I dug a trench initially, lifted a bit of the slab up, wedged some rock under it to create a void, then just started digging under as I went along.
I had a DOH! moment when I realized I have to ? at least cut a relief around to door so the cracking doesn't end up under the door, and maybe into the family room slab.
McLaren is offline   Reply With Quote
Old 02-24-2013, 02:28 PM   #15
Newbie
 
Join Date: Feb 2013
Location: Surrey, British Columbia, Canada
Posts: 21
Default

Cutting concrete slab


Quote:
Originally Posted by joecaption View Post
How do you plan on hauling all this away and do you have someplace to haul it to?
Someone with a bob cat and a dump truck could have that out, regraded and hauled away in a couple hours.
Well, I was thinking of sneaking into the neighbors' backyard, then throwing it over the fence 2 doors down so my neighbor gets blamed...I kid, I kid.

It's tempting to have someone else do it, although there's no way to get a Bobcat back there short of using a crane to lift it over the fence, but maybe I could at least get a pro to cut it, and I can do the grunt work to save money.

I've hired a company before that drops off a trailer, then hauls it away when you're done. Of course, considering the weight, it's going to be pricier than previous times. I also thought that since I plan on running the downspouts away from the house, I could have buried perforated pipe running to a dry pit and use at least some of the broken concrete for the pit?

McLaren is offline   Reply With Quote
Reply


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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Building Floating Deck over ground and Concrete slab jagnew Building & Construction 2 05-27-2012 12:10 PM
concrete porch slab questions Queso Bandit Building & Construction 2 06-29-2011 10:31 AM
Fix or Replace Porch Concrete Slab Majoram Building & Construction 10 06-25-2011 02:45 PM
Help stone over concrete slab Johnnyquest Flooring 0 05-20-2011 03:36 PM
Concrete slab to foundation work tntgarv Building & Construction 3 02-28-2010 12:23 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.