Advice For Replacing Porch Posts - Building & Construction - DIY Chatroom Home Improvement Forum

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


Thread Tools Display Modes
Old 04-02-2009, 09:01 AM   #1
Join Date: Mar 2008
Posts: 40
Rewards Points: 25

Advice for replacing porch posts

I have a 50's ranch with a covered front porch. Raised concrete slab, only 15" or so off the ground. Approx (22' x 7'). The porch roof is attached to the house along one side. The rest of the weight is supported by 3 old wrought iron supports. I would like to replace the 3 old wrought iron supports with 4 4"x4" pressure treated posts instead. Just doing for looks as the 50's wrought iron supports are not to attractive at this point.

My question is, is it imperative that the posts be secured to teh concrete at the bottom? The old iron posts are secured at the bottom as they are imbedded in the concrete. However, I've noticed others in my neighborghood that have replaced their posts with wood used aluminum standoffs that aren't actually attached to the concrete. They are the type that have 4 feet. I think they have a hole in the middle so that they can be attached, but most I've seen aren't. I suppose the thought is that since the post is attached at the top, and it is under weight, it doesn't need to be attached to the slab, but is this proper?

If it should be attached, what's the best (easiest) way to do so with an existing slab. I would like to use composite sleeves over the 4"x4" so whatever I use will need to be able to be covered by the sleeve. I know they probably make a lot of different fastners for this, but many I've seen wouldn't work well with the composit sleeve. I was thinking some galvanized, or aluminum L brackets secured to the post and the slab on two sides might be enough. Ideally somethingthat could easily be covered by some trim at the bottom. Maybe fastened to the slab with tapcons?

Any thoughts or ideas?


pkovo is offline   Reply With Quote
Old 04-02-2009, 09:48 AM   #2
General Contractor
HWConstruction's Avatar
Join Date: Jan 2009
Location: Indiana
Posts: 50
Rewards Points: 25

Yes they do!

Use the aluminum standoffs and anchor them with 3/8" concrete anchors. (In the center of the standoff.) You want the anchors long enough to go into the crete at least 2". If they aren't anchored it's dangerous. Wind lift could cause the posts to move, some big fella might fall into one and move it or that dreaded riding mower may take one out if not anchored.


HWConstruction is offline   Reply With Quote
Old 04-06-2009, 06:49 PM   #3
Join Date: Mar 2008
Posts: 40
Rewards Points: 25

Thanks. I'd probably be the big fella that would fall into them!
pkovo is offline   Reply With Quote
Old 04-07-2009, 07:59 PM   #4
Registered User
Join Date: Mar 2009
Posts: 11,730
Rewards Points: 526

Yep, just like HW said, here's Simpson's site:

They both work, use hot-dipped galvanized nails. A 1/2" concrete anchor bolt, minimum. The ABU is a little taller, a bit more support but check your local supplier. Put factory end of post down, helps keep the crawling critters out. These are 16 g. steel.

Be safe, GBR
Gary in WA is offline   Reply With Quote

Thread Tools
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
Pressure Treated vs. Cedar Posts for Porch missyz17 Building & Construction 15 08-22-2011 01:34 PM
Attaching 4x4 posts to a concrete porch. dweagle Building & Construction 6 04-01-2010 06:41 PM
help settling porch posts - a dilemma. wombosi Carpentry 9 10-10-2008 12:01 AM
Advice on replacing porch supports trobinson017 Building & Construction 7 05-14-2008 06:01 PM
Replacing covered porch support posts yousah Remodeling 4 09-30-2007 12:15 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1