Apr 14, 2014 - How do I repair a broken rafter and push my roof that is sagging in that. It's not completely broken in half but it's a crack about 10 inches long. How to Fix a Cracked Rafter in Your Attic. 27 July 2015 Categories: Construction & Contractors, Articles. Your roof's structure is supported by multiple rafters that run across the width and length of the roof. While they are usually sturdy enough to handle most blows and loads, rafters will occasionally crack. You can use a jack post to push the rafter back up into place and sister boards on both sides of the broken rafter. I would try to use sister boards that extend at least 2 feet beyond the break, more if possible. Use a couple of nails to position the sister boards and then drill through them and use bolts to secure them all together. Once the rafter is secured, you could exchange the jack post for a piece of lumber cut to size that would support this weakened area just as well. Check for roof damage and the possibility of leaks once it is safe to walk up there. Do you know what caused the rafter to break in the first place? Use a couple of nails to position the sister boards and then drill through them and use bolts to secure them all together. Once the rafter is secured, you could exchange the jack post for a piece of lumber cut to size that would support this weakened area just as well. Check for roof damage and the possibility of leaks once it is safe to walk up there. Do you know what caused the rafter to break in the first place? That is rather unusual unless a tree fell on it.Chris. Download lagu till death do us part white lion king. ![]() ![]() Neighbor was cutting his trees down and one BIG section of his poplar fell on the center of our house. We have an older home and the rafters are on 24' centers. The tree fell parallel with the rafters. The rafter that it hit had two large knots. The rafters are 2x6 by 16'. The largest knot was pretty much centered and it broke out leaving a large horizontal centered crack that extends both directions approximately 4 foot each way. Question is how do we best fix this? Do we put a scab on both sides the full length and how much past the end of each crack? Also should we put in upright supports at the end of each scab? What material should the scab be? Yes you are correct, it's been years, so I'm a rookie too. I was just trying to offer a way that didn't require too much effort or intensive labor costs. I figure a full rafter would involve a lot of extra effort to run another 2x6x16 full length, down the side of the cracked/split one. The attic might be a pretty tight fit to get a 16' board up there with out removing the roof. Not to mention the opening and clearance at the attic's access point (hatch?).
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