Replacing A Flat Roof: Need To Remove Old? - Roofing/Siding - DIY Home Improvement | DIYChatroom

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Roofing/Siding


Thread Tools Display Modes
Old 10-02-2010, 09:19 AM   #1
Join Date: Oct 2010
Posts: 1
Rewards Points: 10

Replacing a flat roof: need to remove old?

We need to replace our flat roof (old house, built in early 1900s), which has several layers of tar, gravel, aluminum, etc, and leaks in a couple places.

The contractor that just came out gave us an estimate of $5500 for our 1000 sq ft house, and we were surprised when he said that they would just put the bit. rubber right on top of the old materials. He said that the structure of the roof is in good condition, so no need to replace any of the wood, except in a couple places.

I hear mixed opinions - some say that it's best practice to tear away the old roof, others say it's not necessary. If we only have a couple leaks, that would be covered by this new roof, why would we need to tear away the old structure?



Last edited by fritzc; 10-02-2010 at 09:29 AM. Reason: mistakes
fritzc is offline   Reply With Quote
Old 10-02-2010, 04:06 PM   #2
Join Date: Apr 2007
Posts: 406
Rewards Points: 250

You said yourself you mad multiple layers.Tear it off,save yourself a headache.Will it work?It can,but IMO is a hack job and more than likely against building regs in your area.Check with your local building authorities.I have gone over 1-layer,never multiple.


johnk is offline   Reply With Quote
Old 10-03-2010, 04:16 AM   #3
Grumpy's Avatar
Join Date: Dec 2003
Location: Chicago
Posts: 614
Rewards Points: 552
Send a message via AIM to Grumpy Send a message via MSN to Grumpy Send a message via Yahoo to Grumpy

Most municipalities will not allow you to put more than 2 layers. In my area a building as you had described, it's not unusual to have 4 or 5 layers.

Furthermore if you have multiple layers and you have leaks, you will have moisture trapped between the layers. When it comes to flat roofing, you can put multiple layers but there is a point where it's ridiculious to put more layers. You're past that point.

Have you gotten more than 1 quote?

One other thing that irks the living crap out of me is when someone calls modified bitumen "rubber" Gah I hate that! It's not rubber, it's asphalt. Rubber is EPDM. Ok rant over.

If you want to learn more about your flat roofing options visit this page on mywebsite at: Low Slope Roofing Options If you want to learn more about how to properly select a cotnractor: Hire the Right Contractor
The information found in this post is not to be considered legal advice. The author of this post takes no responsibility for any losses that occur. Use at your own risk.
Grumpy is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Townhouse flat roof - Neighbor's contractor place huge weight of shingles on our roof DIYInCT Roofing/Siding 2 11-23-2008 10:31 AM
Flat roof headache The Barber Roofing/Siding 7 05-17-2008 05:48 PM
large leaking tar flat roof erbilliards Roofing/Siding 2 03-16-2008 11:59 AM
Where flat roof meets shingled roof bstyer Roofing/Siding 1 07-07-2005 08:34 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1