Flat roof-rubber rolled vs hot tar


#1

I am having a neroof installed and want to get an opinion on which method is best and how they compare cost wise. The roof is flat and about 20 years old. I have been told it can be roofed over. I plan to move in the next 2 or 3 years so why do a tear off. Some have suggested a rolled rubber roof and others say that the old hot asphalt roof is still the better method. I live in the Chicago area and we have cold winters and hot summers. Thanks for any suggestions. Also is one method more expensive then the other.


#2

both are good if done right. Some situations will favor one over the other. If you have a BUR now they can somtimes scratch it and then apply another hot roof right over it.


#3

Hi,

If your reason for not tearing off the roof is to screw the person you sell your house to. That is a bad reason.

It depends on the condition of the existing roof if you can roof over.


#4

if its not leaking then clean it off and coat it.

otherwise tear it off.
put a good torchdown or hot tar bur.

good luck.

gweedo.


#5

tim
are you in the city or the burbs???


#6

Personally, I’m always of the opinion that it’s a 'best practice" to go to bare wood / deck surface so a thorough inspection can be done.

I also agree with Ed; if your primary reason for doing a cover over without tear-off is because you intend to unload the property in the next 2 to 3 years, that’s 100% NOT the reason to pass on doing a tear-off with re-roof (aka a roof over only).

If anything, it may cost you MORE or hinder your ability to sell the property because a good roof inspector (whether real estate ‘generalist’ or knowledgeable roofer) might spot a 2 layer job & advise to NOT purchase based on:

  1. The potential for hidden damage beneath the un removed layer
  2. The potential for damage due to a 2nd layer roof which adds extra weight
  3. The potential for extra costs should the new owner desire to affect repairs or do a full re-roofing.

& That’s my take on it.


#7

Hi,

Roofboss is asking because there are laws in place for the type of roofs you can use in Chicago.

You must reach a certian reflectivity level. To counter the “Heat Island Effect”.


#8

HE’S THE BEST LEFTY THERE IS!!!