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Old 07-15-2017, 10:39 AM  
simonsx5
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Default Porch separation

Hi. I am in need of some advise. So during a recent home elevation, one side of my back porch started to separate. Forgive me if I mess up on the specific terms related to the framing, but from what I understand the facial board that our deck was attached to, was rotten and fell apart during the elevation so there is nothing there to hold that side of the porch to the back of the home? I also included a picture of the inside of my home where you can see the Separation of the same wall just from inside. Any advise on how one might remedy this situation?Name:  ImageUploadedByHome Repair1500136531.303019.jpg
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Old 07-15-2017, 12:39 PM  
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How much was your home elevated? And were the front posts of the deck anchored to the ground or were they free to move. Were they supported during the lift?


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Old 07-15-2017, 01:13 PM  
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Welcome to the site.

The "facial board", is actually called a rim joist, and SNS is correct that the deck should have been supported and raised with the house.

For no other reason than the roof loads.

The simplest correction is to lift the deck, lever it back into place, level it and secure it with heavy metal angle brackets.
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Old 07-15-2017, 01:53 PM  
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My home was elevated 2 foot. The original posts under the deck were simply wooden post concreted in the ground. Most of those were cut off at deck level and replaced with concrete blocks. (Picture below). The concrete blocks are still not anchored or attached to the home at all. The tie downs were installed under the home into the footing and wrapped around joists in random places. (Picture below)

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Old 07-15-2017, 01:54 PM  
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Snoony B- when you say lever it, are we talking like a ratchet strap?
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Old 07-15-2017, 01:55 PM  
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Sorry to be a pain, what type of metal brackets, and where would those said brackets go?
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Old 07-15-2017, 02:23 PM  
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Have you been able to confirm the amount of rot involved? It sounds to my cynical ear, like something a contractor ( a disreputable one) might say if he was looking for an excuse. If there is rot, now would be the time to fix it and defend against future problems. If the board is not really rotted, it probably needs to be reinforced at this time because of the damage done to it when the deck pulled loose.
I don't think ratchet straps would be strong enough to raise a deck. You would have to jack up the lower end, and you may need cables to pull it back against the ledger. Then it can be fastened to the new ledger board. The supports under the lower spot may need to be shimmed to support the deck at the right height.
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Old 07-15-2017, 03:07 PM  
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Quote:
Originally Posted by simonsx5 View Post
Snoony B- when you say lever it, are we talking like a ratchet strap?
Thanks, I had assumed they would have poured either a continuous stem wall foundation or placed a continuous CMU foundation.

How often do these CMU pilasters and hold downs occur across the length of the deck attachment?

The process involves some cribbing, bottle jacks and a couple of 4X6.

Set the first jacks 18" out from the rim joist/ledger and after you have it lifted pull all the nails used to attach it to the house. Attach a strap or cable to the deck joist and the other end with the ratchet to the house floor joists, or a support beam.
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Old 07-15-2017, 07:22 PM  
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Ok. So my husband says that the CMU's are all different as far as spacing. We measured 2 on the very back and one measured 11' 3" between them and another measured 12' there are 2 tie downs both on each end of the porch. There are about 15 CMU's on the interior of the deck and they are spaced much closer. I have given more pictures below. The first one is the porch from the back. The second is the rim joist on the opposite side of the house that is not separating. Name:  ImageUploadedByHome Repair1500167936.736430.jpg
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Size:  47.8 KB The third picture is what looks like the rim joist pushing out on the siding of the home. The last is how my general contractor added support, but it doesn't seem to be working and he doesn't want to go behind and fix what the foundation contractor messed up. He just wants to cover it up. I think we will try the suggestions so far and see if we can get it to come in some. Name:  ImageUploadedByHome Repair1500168014.329337.jpg
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Old 07-15-2017, 07:23 PM  
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Sorry, my picture order got messed up.


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