cutting opening in hot mop roof

john02139May 5, 2013

I would like recommendations on best way to cut an access opening in my roof about 2 foot x 4 foot. Original roofing and one replacement add to about 1 1/2 inches total dense black tarry/felty/papery stuff. This does not include underlying wood deck. I would like to use skill saw so that I can cut through roofing and wood deck separately. If I do, what would be the ideal blade to use. I realize it may not be of much use once I'm done. Are there other ways besides using skill saw. I made a small access opening from the bottom using a reciprocating saw - a miserable job. Thankfully the big opening will be from the top.

Thanks

Thank you for reporting this comment. Undo
millworkman

If you don't want it to leak, call a professional as you sound over your head already!

    Bookmark   May 5, 2013 at 9:40AM
Thank you for reporting this comment. Undo
brickeyee

This is demo saw land (Sawzall).

Make sure you have plenty of spare blades.

A roofer would be a much better choice since they will know how to curb the opening and prevent water from entering.

    Bookmark   May 5, 2013 at 3:20PM
Thank you for reporting this comment. Undo
randy427

Most of the plunging and cutting can be done with a demolition saw. A recip saw may be needed for finishing the corners.
How are you bracing for the rafters being removed?

Here is a link that might be useful: Demolition Saw

    Bookmark   May 5, 2013 at 4:22PM
Thank you for reporting this comment. Undo
PRO
Sophie Wheeler

Disaster waiting to happen. Call a professional if you don't want the roof to collapse or your house to leak.

    Bookmark   May 5, 2013 at 4:40PM
Thank you for reporting this comment. Undo
snoonyb

The reason that you are receiving the variety of responses is that you have only asked, and elected to omit the why.
All of the end products do not have a standard methodology for weather protection.

    Bookmark   May 5, 2013 at 8:25PM
Sign Up to comment
More Discussions
Insulating an inaccessible crawl space?
My 1940s bungalow style house sits on a crawl space...
blessedbe
Crawlspace floods with water, but it doesnt touch the wood, ok?
I have a crawlspace that is about 2 ft from the ground....
tlbean2004
Should we raise/fix concrete slab in driveway or wait?
Just moving into a new house this month. So the inspector...
mattsk42
Big shelving project part 2
This is a follow up to this thread: http://ths.gardenweb.com/discussions/2604905/big-shelving-project This...
springcorn
concrete over concrete?
I have filled the space under my front door threshold...
robinasq
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™