Could someone help me out? I am having trouble convincing some "old school" roofers that mastic should not be seen on a new shingle or modified flat roof... Could someone post a few pictures of mastic failures, please?
Bad mastic!!!
mindfield
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I didn't say not to use it. I said it should not be seen. Naturally, you use plastic cement to sub-seal pipe flashings, but for the tops of pipe flashings I use a polyurathane caulking which is plyable and paintable. Also, if flashings are installed correctly, no sealant is needed.
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403 Posts
I have some friends who are "roofers" and I laugh at them every time they buy supplies. They get about 3 tubes of black mammy for every job! I ask them what the hell it is for on a new roof. That stuff is meant for homeowners who are too cheap to hire a good roofer and good roofers who have to make emergency repairs in rain. Now I guess on a flat roof it is understandable in certain spots...but no way I would roof a shingled roof and then smear tar where it could be seen, that's like signing the job "jackass". Just my opinion. I hear in Texas, Florida and other coastal areas tar has to be used along edges....that must suck to both install and to tear off.
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403 Posts
JWilliams, I sure hope you guys get paid well for doing that. I can imagine on a tear off what a nasty mess that must be.
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374 Posts
guys only use around three tubes on every job?
I would be laughing too.
I use about 5 GALLONS on a small to medium job.
A cut up 40sq could be near 10 GALLONS.
the steeper the roof-less needed.
the lower slope the roof-more needed.
There are many places on the roof where it is needed for quality!
i use two or three tubes of matching polyureathane on every job also.
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403 Posts
Florida, starter must have bull underneath. If starters aren't installed with tabs cut off and stick-tites at bottom, then must have quarter sized dots under each tab. (Archys with stick-tites on bottom okay).
All penetrations must be sealed, and shingles 6 nailed and ridge cap 4 nailed.
Florida sounds like a very difficult place to be a roofing pro... I am in AZ. We don't get near as much wind or rain... and because of the abundant sunshine I feel like any visable bull burns out in a matter of months. I still have not seen any pictures posted though... Roof-Lover, Where exactly does all that bull get used?
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374 Posts
all rakes,eaves,walls,penetrations,valleys and any fastener that is installed too high or below flush.
on all walls and penetrations, i also counter bull.
All this started after Andrew and they were changing codes daily and on the fly...
I remember the first time I had to go back and run bull up the rakes and all under the starters..
I think I used 3 cases of tubes...
Do you still have to shoot thru the round tin tags ?
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374 Posts
I havent ever had to do that. I believe that was only in the miami-dade region.
But i guess it is just as bad now. cap nails have to be installed.
A simplex has to be installed every 6 inches on all laps and 2 runs of 12 inches on center in the middle of the roll. An inspector comes and makes sure you do it to a T before you are able to install the shingles.
Also cutting into your underlayment to verify that you installed a new
8d ring shank nail every 6 inches.
now i have no confidence in my dry-in due to increased cuts, protrusions and a single layer of underlayment.
Incredibly Increased COST and TIME with the result of a LESSER product. Government in action again.
Government and increased regulations is not the answer.
Now the government is gearing up to destroy all buisness through the EPA and OSHA. It makes me SICK!!!!!!!!
Its all totally rediculous and happened after the democrats took control of government in 2006. And anytime someone tells me they are a democrat, its one of the things i think about
And they are not positive thoughts...let me tell you.
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