May
13
Home Remodeling
Filed Under Do It Yourself (DIY)
i want to sister the joist below me first floor sub floor. the span of the existing joists are around 25 ft. and i want to sister and raise the floor about a 1/4 to a 1/2 inch in the area of sistering. i want to sister the entire span of joist. the old joist run the entire 25 ft across the basement. should i use two 12 ft sisters one on each end with a beam running perpendicular the joist between the sistered joist or just use a sixteen footer on one end and around nine feet on the other to complete the span. the floors have a little sag and im also installing floor tiles in two of the rooms above the joists. anyone have any better ideas or what is the best way to do it?
