Is a 4x4x18′ enough to support this span. 12’x13′ room. Ridge beam supported each end with a 13′ open span
roofstructural
Screened in room. Ridge beam recommendation?
Best Answer
Depending on snow load, if any, “dead load” (composition of roof structure), species of wood, grade of beam, etc., I’d use a 4x8...minimum...for a 13’ span.
It looks to me like that is the board used to hold the ridge up until the rafters are nailed to it. Once the rafters are up the brace should be able to come out. I think the buckling is due to some settling and age. The framers should have taken it out. They should take out all of this kind of bracing so that no one is confused later. There is no way that a 2X4 is supposed to hold up a 2X12 and the whole roof that sits on it.
Call an architect. Seriously call one. Let them know what you'd like to do. Ask for some ideas. They can take the structure, age, other home styles in the area and give you a slew of options that are suitable and sound.
And it shouldn't cost that must either. They can suggest and sketch out rather quickly the style based on many factors including load weight, pitch, roof material you're going to use and more. There's modern materials, ways to get light in, sun roofs, venting, insulation that all factor in to a design.
A local architect is also in the know on building codes etc.
Looking around for ideas it's one thing but if you're serious about replacing the roof, an architect is the one to consult.
Best Answer
Depending on snow load, if any, “dead load” (composition of roof structure), species of wood, grade of beam, etc., I’d use a 4x8...minimum...for a 13’ span.