help Deck rebuild. Existing deck is built on joists that extend out from the kitchen. submitted If I wasn't going to expand the deck I'd consider just re-using the existing joists, or maybe sister some new joists to the existing. Since I want to expand it to the right in the picture above I want to use a proper ledger board to attach the
Re: Repairing/Sistering Cantilevered Deck Joist By code, the framing HAS to be PT so you either have to start over or you have to put in a waterproof deck surface. Probably no slope now, so you need to rip 0-2" off the tops. And you GOTTA look for rot at and behind the line of the WRB. You didn't say was the spacing was, but it looks kinda like
This project is continued from How to Repair a Sagging Wood Deck. How to Sister a Wood Deck Post for Beam Splice Support. In the previous part of this project series I explained the problems with the sagging wood deck and how the 2×10 rim joist splice was unsupported and slipping down the side of the 6×6 deck post.
Our 60 year old floor joists are showing their age. Here's how we are correcting the problems. I forgot to mention the construction adhesive in between them
I have a few bad deck joists that I replaced with new PT joists. These repairs are great. Now I have a few more not too bad joists that will be rotted in a few years. I am thinking to add new PT joists sistering with the old ones. In addition, I will add carriage bolts to strengthen the two sistering joists together.
Mistake 7: Attaching deck ledgers poorly. If sistering deck joists to floor joists isnt an option, adding a beam, posts, and footings can help to relieve some of the stress placed on the fasteners connecting the ledger to the end grain of the cantilevered floor joists.
Decks, Patios, Porches, Walkways, Driveways, Stairs, Steps and Docks - Sistering Deck Joists - Im building a deck thats 24x22 with two beams spaced 10 feet apart 2x10 construction, 12OC . I hope
One of my deck joists is cracked at the end of the board where it is attached to the ledger with a joist hangar. The crack is about 8 in long lengthwise. What would be the best method repair? Should I try sistering the joist or just adding a new joist directly next to the cracked one maybe a few inches apart?
Sistering beams involves overlapping boards. The longer the overlap, the stronger the connection. It is commonly used to repair a joist in a deck or when your span is longer than the joists you have. The connection can be done with deck screws, lags or carriage bolts. You can do a search on a pattern that should be used for your application.
The distance your joists can safely cantilever or overhang a drop beam is determined by the size of the joists, the wood type and grade of the lumber and the spacing between joists. Many building departments limit joist cantilevers to 24" maximum. You must use at least five framing nails to attach the rim joist to the ends of your joists.
Q: How do I repair a deck joist that is starting to rot? A: The easiest way is to repair a joist is to install a sister joist to strengthen the damaged area. Use a hammer and chisel to chip away the damaged wood. Liberally apply two coats of waterproof sealer over the damaged joist. Cut a reinforcing sister joist from lumber that is the same dimension as the damaged joist.
Attach the sister joist with a pattern of 3 nails every 32 inches in a strht line. The nails may require predrilling to drive without bending. Follow the nails with two lag bolts in between the
Sistering. If only a small section of the joist is bad--say, no more than a quarter of it--the repair is fairly simple using a method called "sistering." To sister, cut out the bad section of the joist--make sure you cut back to good wood, leaving none of the rot present. Then bolt and glue a new section of joist to the remaining old joist.
Mornin', My house is built using 2 x 8 joists with an approximate span of 12 1/2 feet spaced 16" oc. This is fine but there seems to be a lot of deflection, when I walk around on the 1st floor, I can hear things rattle. I was thinking about sistering maybe every other joist but I won't be able to sister the entire length.
Sistering joists is a temporary fix. I do sistering if the client understands that and intends on doing a full replacement in a years or so. Because this deck is Seven Trust I believe your client would be better served with joist replacement. If the decking was wood and was also rotting I might be tempted to go with sistering.
Span for Sistering joists on cantilever deck Makes me wonder now of the deck I'm doing engineered is right. 1.4m overhang 4m between bearer and plate 5.4m overall Would be interested in this answer also. 290x45 tp joists
Deck building is one of the most fun projects you can engage in. Budgeting When Laying Decking If you are free for a day at home, then building deck stairs is one amazing project you can work on to ensure you finish the long awaited project. Sistering a floor joist -- but you can't do it from these instructions Sistering a floor joist
If you elect to support the deck joists on a ledger, you have to make sure the ledger itself is well supported. Lag bolts into the end-grain of the floor joists of the house will have a good shear resistance, but won't do the floor joists themselves any particular good. If they split, your ledger will sink.
Screws for sistering are not to code, unless signed off by an engineer. You have to use 16d nails. If you have to use screws, use Timberlocks or Headlocks,or Spax. Deck screws are a waste of time, as they lack anything close to adequate shear strength. sistering a new joist.
A: Tom Silva replies: Sistering new joists to the old ones would just encourage rot by creating a place for water to collect. You could trim the rot off the ends of the joists back to good wood, although that would make the deck narrower. But it's the rot along the top of the joists that's a trickier problem.