Denver Roof Question

[Jim Robinson]

This is for my brother in law and sister in law. Their home inspection pointed out some problems with the roofing, which led to some further investigation. Their house has what the roof inspector noted as light weight concrete tiles. It's definitely a concrete tile roof, similar to the Boral Split Shake. I'm trying to get a definitive manufacturer and model, but have not been able to as of right now.

The question is: Does Denver have an impact rating minimum for concrete tile roofs, or other types of roofs in general? The roof inspector said there is a good chance that the concrete tile roof that is on their house is no longer certified for use in Denver. Obviously, it's not a fire rating so it must be some type of impact rating or wind rating. Anyone familiar with what the roofing inspector is referring to? This doesn't come up down here, which means absolutely nothing. They are technically in Littleton, if that makes any difference.

[CHARLIE VAN FLEET]

any pictures?--then is that HI certified to make that call--or even certified--get a roofer out to evaluate--concrete tiles are pretty good here in colorado--and takes a pretty good hail stone to crack--but we do have some pretty good hail here--can any roof survive a softball size hail stone which we have had during the last two days--i see cracked tiles but maybe someone walking it--and only maybe one or two per roof during inspections

[Jim Robinson]

HI did his job. Roof inspector next on the scene. He referred to lightweight concrete tiles. Back to the original question, is there an impact rating mandated in Denver / Littleton that you know of? No pictures right now. My BIL does have the manufacturer of the tiles, but I won't have that info until tomorrow.

[CHARLIE VAN FLEET]

some insurance companies ask for it--but don't know of any code -will check with some of my roofers

[Jerry Peck]

I am wondering if the question may be more about the concrete tile roof system than the concrete tile itself as there are (at least have been in the recent past) concrete tile roof systems which consisted of spaced sheathing (like for the old, true, cedar shake roofs) on which the concrete tiles were laid.

The spaced sheathing is not comparable to solid sheathing in many ways, structural is one, but another is that when a tile breaks there is no sheathing below it between the spaced boards the tile head and butt are resting on.

Just a thought from another direction. It wouldn't keep the tile from breaking, but it would keep stuff from going through once the tile breaks.