Math Help

busterb · 01-04-2006, 07:28 PM

My bad all he put on bid was Modified Bitumen. So that's what lead me to look around.
A roofer, I'm not.

Elspode · 01-05-2006, 02:54 PM

I was in roofing for almost 14 years, Buster...what, specifically, are your questions on this roofing issue? The water evaporation within 48 hours thing is a stipulation for the sake of the warranty. Basically, you need enough slope to ensure that all standing water will drain off in that time. In reroofing situations, that is nearly impossible without replacing the substrate, because original roofing substrates sag unevenly over time, and you get "potholes" where the water will stand. 1/4" per foot average structural slope will *not* typically drain an older roof, but you can have a tapered insulation system installed to fix that. It greatly adds to the cost, though.

I assume you have some flat roofing involved, here, if you are looking at Mod Bit?

01-04-2006, 07:28 PM	#1
busterb NSABFD Join Date: Jul 2004 Location: MS. usa Posts: 3,908	My bad all he put on bid was Modified Bitumen. So that's what lead me to look around. A roofer, I'm not. __________________ I've haven't left very deep footprints in the sands of time. But, boy I've left a bunch.

01-05-2006, 02:54 PM	#2
Elspode When Do I Get Virtual Unreality? Join Date: Dec 2002 Location: Raytown, Missouri Posts: 12,719	I was in roofing for almost 14 years, Buster...what, specifically, are your questions on this roofing issue? The water evaporation within 48 hours thing is a stipulation for the sake of the warranty. Basically, you need enough slope to ensure that all standing water will drain off in that time. In reroofing situations, that is nearly impossible without replacing the substrate, because original roofing substrates sag unevenly over time, and you get "potholes" where the water will stand. 1/4" per foot average structural slope will not typically drain an older roof, but you can have a tapered insulation system installed to fix that. It greatly adds to the cost, though. I assume you have some flat roofing involved, here, if you are looking at Mod Bit? __________________ "To those of you who are wearing ties, I think my dad would appreciate it if you took them off." - Robert Moog

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)