Against all the house; which interpreters understand of those chambers described 1 Kings 6:5,6. But why should that be repeated again, and that so darkly and confusedly, after he had particularly and exactly treated of them (unless to give an account of the height of each chamber, or story, which before was not done)? And the Hebrew words may be truly and properly rendered thus, He built a roof (to wit, a flat and plain roof, called yatziah, because of the exact resemblance it hath with the floor of a house) over all the house, according to the manner of all the Israelitish buildings, which were flat at the top; of which see Deuteronomy 22:8 Joshua 2:6 2 Samuel 11:2. The inner roof was arched, 1 Kings 6:9, that it might be more beautiful and glorious to behold; but the outward roof was flat. Five cubits high, above the walls of the temple; which was necessary, that it might be a little higher than the arched roof, which it was designed to cover and secure. They rested, Heb. it rested, to wit, the roof; for the Hebrew verb is of the singular number. With timber of cedar; which rested upon the top of the wall, as the chambers, 1 Kings 6:5, rested upon the sides of the wall. But all this I submit to the learned and judicious.
Related Commentaries of 1 Kings 6:10
1 Kings 6:10
10 And then he built chambers against all the house, five cubits high: and they rested on the house with timber of cedar.