How to Cold Process Modified Bitumen Roll Roofing - Shorter
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- Опубликовано: 6 сен 2024
- Cold Process Modified Bitumen Roll Roofing is another way to apply rolled roofing other than hot mopping or torching. The term cold applied is referring to other than hot applied. Self adhered systems are a hybrid form of cold process. Applying modified bitumen granulated cap sheet is a broad brush that can be applied to many different situations. With the right set of people, efficiency can be had with cold applied systems just as well as hot applied systems. The difference is that the danger for the persons and property decrease dramatically while using cold applied materials.
Cold processing can be used for repairs and new installations alike. It is just a matter of getting used to the materials.
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Doing my roof right now.......this is some damn hard work put in the 100 degree weather in Az. You guys earn every penny!!!
That's hot
Very informative video that helped me plan my repair job and get the proper materials. Thank you!
Great to hear!
Can you use a cold applied cap sheet as a patch on a modified bitumen roof by applying primer, adhesives, and then the cold applied cap sheet? Also, if necessary, could you re-seam a cold applied cap sheet by using a torch? Thanks.
Yes. Would not use a torch. Torchdown material has bitumen in the roll. Cold applied material the bitumen is in the can. You can use a torch to warm up the material so it is easier to work with, but melting the material is not the right idea. Unless, the material is torchdown or APP.
What about foot prints on the white ceramic granules and excess trowel grade squeezing out of seams? Can I glue on granules with clear adhesive? Can I heat the trowel grade up a little and press in the granules?
Would not use clear adhesive. Yes heating the trowel grade and putting in the granules will work, not too much as it will catch fire. Also, you can just put a little fresh roofing cement over and put granules in it. You just need to cover with granules and not worry about pressing in.
@@PracticalRoofingConcepts Gotta wait until the weather heats back up here in Colorado. I will try smearing a thin coat of adhesive over the existing adhesive and using a shaker to spread the granules evenly - thanx.
Good vid. Picked up some good info and pointers.
How many inches has to pass mineral surface roll from center of a valley thanks in advance
If it is a valley underlayment for shingles, it should be a full roll or 36" or 18" each side. If it is a valley for a Mineral Surfaced Roll Roofing roof, then personally I would roll a full roll down the valley and then the horizontal rolls I would have come onto the valley roll halfway in. so at approximately 9" would have the seam. The roofing gods call for a 4"-6" sidelap on roll roofing so this would comply and then some. Not a bad idea to double up the valley. It would last longer. Also Modified Bitumen would be a better choice and last a lot longer. I know it is more expensive, but is worth it. Especially for a larger roof. There are self adhered options also - ruclips.net/video/kU4xxrEv3ks/видео.html
Thank you! Very much appreciate
@@PracticalRoofingConcepts What do you mean double up the valley? You mean glue n run two right on top of each then do the 9 inch overlap on both sides?
Yes. You could put a 1/2 roll in the valley first over your underlayment, then a full roll or weave over that. This way you would have "at least" two layers in the valley. Metal is best, but not required in all locales. The 9" overlap has to do with a weave. If you bring one side through the valley and then up into the other side of the valley, then the opposite panel would be cut 9" outside of the valley. Similar to a half lace shingle valley. We would always run a full roll then cut each side a few inches outside the valley. This way our valley metal (for tile) would not get caught on the laps. Good luck.
What happens when it is time to strip roof?
The cap sheet is installed over tarpaper felt. So the entire felt paper and cap sheet assembly would come off.
Is that cap sheet going straight onto wood or underlay felt?
It was cold processed over 30# tarpaper felt. Only time we adhere right to the plywood is on new construction when we are doing the entire roof self adhered. On repairs I always try to stay with like materials so when it is reroofed they can tear off everything.
Practical Roofing Concepts thank you very much. I'm attempting my own flat roof repair on a garage roof. I'm laying down new chip board, priming it then using self adhesive bitumen to hold down new cap rolls. The idea of trowel mastic the edges to keep in the bitumen is good idea. Thank you
That is called 3 coursing and it will tie your new repair to your existing roof. Good luck with that.
Hi, I am in SW Florida. Can i cold roll these sheets over an existing flat roof that is still not leaking and in decent shape? I used that metalized roof coating a few years ago and would like to use cold roll over that? Is there a difference in strength and durability from using this cold roll system compared to the torch down? Thanks
Can this be used for road repair, modified bitumen adhesive?
Probably would be too soft. Need to get an asphalt designed for roadwork. I am sure it is not far off though.
I meant like a primer for the cold patch. Some use bitumen tack spray on the previous layer so that new layer on top would stick to it. They stock modified bitumen, the road one is special order. Maybe might work eh
Sounds good to me. Don't have any experience in asphalt used for roads.
So let me get this straight you don't have to squeegee it
We always use a roller. Especially with the squeegee grade. As we also use it on sloped roofs.