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Closed cell spray foam

Discussion in 'Commercial Building Codes' started by Bruce Chirre, Oct 17, 2019.

  1. Bruce Chirre

    Bruce Chirre Registered User

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    Hi, my name's Bruce. I'm in the middle of getting my building permit to remodel my brother in law's commercial building that he will be leasing me. It used to be a flower shop and I'm going to make it into a convenience store.
    My brother already gutted the building and removed all partitioning walls and fixtures, it's basically a shell not even a ceiling it had a hanging ceiling. Ok so my question is I want to have a open look for the ceiling and there is no insulation on the roof so to insulate it I'm hiring a spray foam company to foam the ceiling to r38 and then I was just going to spray paint it and call it a day? My ceiling is only 10 feet tall so I'm trying to make it look bigger by not putting anything over it.. I'm in Portland Oregon. Any fire code or maybe health code I might run into a snag? I'm going to have a deli too.

    Thank you
     
  2. Bruce Chirre

    Bruce Chirre Registered User

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    I thought I'd throw out there this is a one story 100% steel building 1600 sq ft
     
  3. Paul Sweet

    Paul Sweet Sawhorse

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    Exposed spray foam is usually a fire hazard and prohibited by code. It's possible there are some intumescent coatings that could be applied over it
     
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  4. e hilton

    e hilton Bronze Member

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    Google “K-13 spray insulation”.
     
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  5. my250r11

    my250r11 Sawhorse

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    Could always redo the roof with the correct R value for your area.
     
  6. mtlogcabin

    mtlogcabin Registered User

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    Increasing the insulation value of a roof increases the snow loads on that roof. I see Portland uses 20 PSF snow load which is not a lot but you might want to check if the increase in insulation will create additional snow loads that exceed the original roof design.
     
  7. cda

    cda Sawhorse

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    Can he spray the insulation, and than coat it with a non flammable???
     
  8. cda

    cda Sawhorse

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    Any food prep or exposed food. not in packages?
     
  9. Rick18071

    Rick18071 Sawhorse

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    So what did the architect show on the approved building plans? You are not allowed to design it unless you are the certified architect for this job.
     
  10. Bruce Chirre

    Bruce Chirre Registered User

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    @cda yes I will be making food so exposed food for sure.@rick18071 I didn't use a architect it's not required for commercial buildings less than 3000 sq ft in inner city Portland.
     
  11. e hilton

    e hilton Bronze Member

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    Well that sounds like an invitation to trouble. No offense to the OP but that opens the door to all manner of errors. And failed inspections.
     
  12. Bruce Chirre

    Bruce Chirre Registered User

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    Found the spray on fire proofing Dc315,. Just spray it on and we're all good thanks everyone. Especially Paul Sweet. Intumescent coatings was the ticket. Now I don't have to have that nasty drop ceiling
     
  13. tmurray

    tmurray Registered User

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    We see DC315 quite a bit. Make sure the contractor has used the product before.
     
  14. Bruce Chirre

    Bruce Chirre Registered User

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    I'll be doing it myself can't be that hard. Called around and they wanna charge 4000 for 1500 sqft and it's only 300 bucks for a 5 gallon bucket. I might as well buy the spray machine for it. And do it myself. Great help guys thanks.
     
  15. e hilton

    e hilton Bronze Member

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    There’s a reason they charge $4000 ... hope you don’t learn the hard way. I imagine overspray and cleanup takes a toll. I have no experience with that stuff, but i have read that spray foam insulation is tricky to do right ... too thick and it goes bad. Wonder what the tricks are for this product. I assume you have worked out the coverage vs thickness equation per gallon ...
     
  16. JPohling

    JPohling Sawhorse

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    Guaranteed that the exposed insulation will not comply with health requirements for a scrubbable/washable ceiling. You will need to do something different in the food prep areas like a lay in ceiling below with the appropriate tiles. How is the accessibility? This is a change in use so it may as well be new construction and will need to comply.
     
  17. Bruce Chirre

    Bruce Chirre Registered User

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    Health code only says ceilings need to be one of the following Stainless steel, Plastic coated or metal clad fiberboard, Dry-wall epoxy, Glazed surface ,Plastic laminate. So I'm gonna spray paint the thermal barrier with some glossy paint.
     
  18. e hilton

    e hilton Bronze Member

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    You know what ... you’re starting to bother me. Why? Because it's obvious you’re trying to cut every corner possible to finish out that space without regard for building code or safety. Your last post says you’re going to spray glossy paint on the insulation to meet sanitary requirements. Have you read the manufacturers spec sheet? You cant use regular paint because that adds a source of fuel, it has to be sprayed with an intumescent paint.

    So you’re going to apply it yourself to save money, then you’re going to spray it with cheap paint from home depot to save money, then you’re going to get red tagged by a sharp eyed inspector, and then you’re going to post on facebook about how mean and unreasonable the evil city government is.
     
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  19. JPohling

    JPohling Sawhorse

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    That will not work on many levels
     
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  20. Bruce Chirre

    Bruce Chirre Registered User

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    Everything worked and passed inspection spray foam and dc315 for my whole building plus kitchen. Thanks for the help.
     

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