My roof is 1600 sq ft. It had a metal roof on it, which is considered more expensive than asphalt. It was 40 years old, which is the how long metal roofs are ex

My roof is 1600 sq ft. It had a metal roof on it, which is considered more expensive than asphalt. It was 40 years old, which is the how long metal roofs are expected to last. I replaced it myself for around $2000. Most of the cost was $1600 for the metal roof. Then there was $400 in special nails and trim parts and sealer. It would have cost a little more if it wasn't metal before since I'd have to have added the spacers. Metal and asphalt replacement are sort of DIY possible, but asphalt is dirty heavy work. Metal is less dirty and dangerous, just remember to wear leather gloves. Also probably don't attempt if one's roof has more than a couple gables etc. It's better if you've done it before in any case. To have someone else replace the roof would have cost at least twice as much. Could be three times as much in some parts of the country. If I were to have switched to slate or terra cotta or glass solar tiles I'd have to tear down the roof and rebuild it because normal houses in the US are not designed to hold that sort of weight, it requires a stronger roof structure, and sometimes stronger walls to hold the heavier roof. Possibly the rest of the structure would have to be reinforced as well. Doing this correctly requires a consultation with a licensed structural engineer. That sort of roof rebuild would cost from $20,000 - $50,000 depending on the scope needed according to the engineer, and that's before adding the roofing materials.