Jacking Up Roof Rafters

To install the new rafters i will have to remove the deflection of the existing rafters so the new ones will fit and properly carry the roof load.

Jacking up roof rafters.

However this should be done very slowly and carefully. You may do this 1 per day and roof rafters can handle more stress. Jack up the rafters by giving one inch space between them this will allow the roof to move with it without cracking. The easiest way to straighten rafters is to jack them into position.

Move the jack in increments of one inch to allow for the roof to be able to move with it without cracking. Use the link below for wall framing instructions. It may take several weeks for the rafters come back in their original position. I can jack against the ceiling joists over a bearing wall below.

While some of the issues can be fixed easily by adding struts jacking up some loose rafters or replacing shingles and sheathing other problems will require a much more serious solution which will require an experienced expert to work on it. The roof is hipped so the ridge is only. I am tempted to install the new rafters with the crown down to reduce the jacking required. A rather simple method of jacking up ceiling joists to take sag out and putting in support lumber.

However the trick to this process is to do it very slowly so it may take a few weeks before you get the rafter into a position where it is straight again.