How To Fix A Sagging Porch Roof

A bottle jack is a small hydraulic that uses a long handle to raise and lower support braces.

How to fix a sagging porch roof.

Push up on the plywood until the foam is touching the underside of the roof decking. So to begin i removed the existing counter flashing running about 5 courses up this was as easy as finding nails and prying. My guess is that the entire porch roof will have to be replaced rather than having to piece together a fix. I won t speculate upon repair costs because i don t have a clue about the quantity and quality of materials as well as your local labor rates.

In raising the roof i knew was going to have to reset the roof s flashing as it meets a sidewall of the house. Well it turns out that fixing the sagging roof issue on my front porch was way easier than i had thought it would be. First i cleared out a level area under the porch next to the sinking support column. The corner was only being supported by one column.

Move the braces into place on top of the bottle jacks image 3 then raise them till they support the roof. How to repair a sagging support beam. Next place your piece of plywood and styrofoam foam side up against the damaged roof decking. Some of the porch that isn t rotted might be able to be reused.

The sag wasn t horrible but it was definitely noticeable and it bugged the heck out of me every time i looked at it. Things to consider with jack up a porch roof the prep. How to repair a damaged roof. Sagging rafters can lead to serious problems with the entire roofing system.

In this case one corner of a neighbor s porch sunk about 1 5 inches over the last couple decades. This is how it looked just a few days ago. This will hold the weight of the porch roof while replacing the beam. If not kept in good repair using water resistant materials and strategically applied coats of paint the key elements of a porch floors framing posts railings and decorative elements will deteriorate quickly.

I thought it was going to be some semi major construction removing the existing sagging beam and replacing it. For less than 20 and a couple hours time i was able to level the sinking side of the porch. That s how to fix a sagging roof.