Should a contractor be mixing their fireproof mixture with 50% or more additional water? Saw this the other day and it seemed like a sneaky way to save money and not safe at all.... I could be very wrong though. Any insights would help
Codes can vary from place to place, but DC315 actually meet the standard for a Class 3 vapor barrier. Here's the long version: DC315 has been tested in accordance with ASTM E96 to determine vapor permeance. Test report TJ5066-2 conducted by IAS accredited lab QAI on 18 mils WFT of DC315 resulted in a perm rating of 8 which qualifies DC315 as a Class 3 vapor retarder. DC315 can be applied over SPF insulation to meet code requirements in climate zones that allow for a Class 3 Vapor Retarder while also providing the code required thermal or ignition barrier of the SPF insulation. In situations where an Ignition Barrier is required, 4 Mils Wet Film of DC315, the application of an additional vapor retarder coating would be required, alternatively by applying 18 Mils WFT may save labor and costs associated with purchasing and applying another coat of a vapor retarder coating. For Climate Zones 5, 6, 7, 8 and Marine 4 where a Class I or II vapor retarders are required on the interior side of frame walls, DC315 has been fire tested over primers, including paintable vapor retarder coatings, that are tested to provide the required retarder class number. This assembly provides the required barrier to moisture transmission while still ensure the fire protective properties again meet the required thermal or ignition barrier. By applying the vapor retarder coating prior to the DC315 it will allow for a greater spread rate as the primer will seal the surface of the OC SPF and reduce the loss of DC315 into the porous substrate.
@@Rdrtechnologies you are correct in everything you say here. I am not an expert at DC315 but I did have to learn a good bit about it while dealing with local code. The area I live in is a model code and they recently adopted a class 2 vapor barrier. Yes DC315 is a class 3 vapor barrier but to achieve a class 2 rating the manufacturer recommended using Sherwin Williams vapor barrier primer. That is what code made me do in my area. I get it. There is air handling equipment in the attic in a close proximity to the insulation layer. They are just being cautious. And yes it is being used as a thermal barrier or to use your term ignition barrier.
I have recently been re-insulating my rim joists with rigid foam board and expanding foam, Can this paint be applied over the owens corning xps 250 rigid foam board / expanding fill foam?
With regard to houses, in general it is not required by code. If you do spray foam insulation inside your normal wood framed wall it will be covered with gypsum board. For a house this is considered adequate protection. If you do spray foam in places where it may be left exposed, for example in your basement or attic, then it will probably require protection of some kind. You could use a paint like this, or of course you could use gypsum board.
The foam you used is closed cell. That's why it didn't burn easily. Open cell is when you need a fire retardant. Please redo the process using open cell with and without the coating to show viewers.
Should a contractor be mixing their fireproof mixture with 50% or more additional water? Saw this the other day and it seemed like a sneaky way to save money and not safe at all.... I could be very wrong though. Any insights would help
Expensive!
But glad I purchased it 👍
Looking to buy where can it be purchased hurry up want it fast!!
Code in my area says DC315 alone is not enough. I am being told I have to add a latex primer to get a class 2 vapor barrier.
Codes can vary from place to place, but DC315 actually meet the standard for a Class 3 vapor barrier. Here's the long version: DC315 has been tested in accordance with ASTM E96 to determine vapor permeance. Test report TJ5066-2 conducted by IAS accredited lab QAI on 18 mils WFT of DC315 resulted in a perm rating of 8 which qualifies DC315 as a Class 3 vapor retarder. DC315 can be applied over SPF insulation to meet code requirements in climate zones that allow for a Class 3 Vapor Retarder while also providing the code required thermal or ignition barrier of the SPF insulation. In situations where an Ignition Barrier is required, 4 Mils Wet Film of DC315, the application of an additional vapor retarder coating would be required, alternatively by applying 18 Mils WFT may save labor and costs associated with purchasing and applying another coat of a vapor retarder coating.
For Climate Zones 5, 6, 7, 8 and Marine 4 where a Class I or II vapor retarders are required on the interior side of frame walls, DC315 has been fire tested over primers, including paintable vapor retarder coatings, that are tested to provide the required retarder class number. This assembly provides the required barrier to moisture transmission while still ensure the fire protective properties again meet the required thermal or ignition barrier. By applying the vapor retarder coating prior to the DC315 it will allow for a greater spread rate as the primer will seal the surface of the OC SPF and reduce the loss of DC315 into the porous substrate.
@@Rdrtechnologies you are correct in everything you say here. I am not an expert at DC315 but I did have to learn a good bit about it while dealing with local code. The area I live in is a model code and they recently adopted a class 2 vapor barrier. Yes DC315 is a class 3 vapor barrier but to achieve a class 2 rating the manufacturer recommended using Sherwin Williams vapor barrier primer. That is what code made me do in my area. I get it. There is air handling equipment in the attic in a close proximity to the insulation layer. They are just being cautious. And yes it is being used as a thermal barrier or to use your term ignition barrier.
I have recently been re-insulating my rim joists with rigid foam board and expanding foam, Can this paint be applied over the owens corning xps 250 rigid foam board / expanding fill foam?
i was looking at your web site for application instructions and there are none.
Would this or one of your other products work to suppress embers lighting attics fires ii the west with our wildfires on wood attic framing?
Is it required to meet code?
With regard to houses, in general it is not required by code. If you do spray foam insulation inside your normal wood framed wall it will be covered with gypsum board. For a house this is considered adequate protection. If you do spray foam in places where it may be left exposed, for example in your basement or attic, then it will probably require protection of some kind. You could use a paint like this, or of course you could use gypsum board.
What’s the fire rating
It is rated for both a 15 minute Thermal Barrier and a 5 minute Ignition Barrier.
The foam you used is closed cell. That's why it didn't burn easily. Open cell is when you need a fire retardant. Please redo the process using open cell with and without the coating to show viewers.