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attic

  1. H

    R806.2 exceptions, balance high/low vents, ambiguous language

    1:150 rule does not require a 50:50 balance upper vs lower. 1:300 requires approx 50:50 balance. So a 3000sf attic requires 10sf of venting IF 5 to 6sf are lower, and 4 to 5sf are upper (min 40% max 50% in upper third). So 8sf upper and 2sf lower breaks this rule. That much is clear. Also 2sf...
  2. S

    Fire Wall Does Not Extend to Roof in Row Townhouse

    The first image is a row townhouse under construction, the second picture is from Ontario Building code. The attic of the first picture looks like inaccessible, and the fire wall does not extend all the way to the roof as required by Ontario Building code based on the second picture. Is this...
    • sunyaer
    • Thread
    • attic firewall roof row town house
    • Replies: 16
    • Forum: Canada
  3. A

    Existing fixed stair to renovated attic ... Can I use the existing 30" stair or do I need to increase width?

    Here are the details: This is an existing single story home. There is a 30" fixed stair to the attic. The attic is currently unfinished, but has large areas that meet IRC 305 head height requirements that the owner would like to capture. The desire is to convert ~500-800SF of the attic to...
  4. D

    Attic Renovation - First time posting

    I am renovating an attic space for a bathroom, bedroom and possibly a walk in closet. The house was built in 1897 and has an 11x11 square turret on the front corner of the house. Unfortunately, it has never been a livable, however it has potential to be a walk in closet. I can create an 80...
  5. Benj

    What defines inaccessible space?

    I am in the process of permitting a Detached Accessory Dwelling Unit (Backyard Cottage) in Seattle. The cottage is 1000 sq ft (per Seattle's limit) and is designed with a shed roof. Most of the space is open to the shed roof ceiling which is 10' on one side and 16' on the other, but there is...
  6. B

    NYS attic to habitable space conversion - sprinkler system?

    I am an assistant building inspector in Westchester County, NY and I am reviewing a set of plans for a 2 family house where they are turning their attic into habitable space (going from a 2 story to a 3 story building). Because their is only one means of egress from the 3rd story, I have been...
  7. T

    Attic Ventilation exception

    Hi there, I wanted to see if I can get your take on the 1/300 nfva exception for attics. When it comes to calculating vents for small attic spaces I am getting hung up specifying a vent that fits within the upper vents 40-50% limit. For example: Attic over a porch is 123 s.f. At 1/300 the...
  8. L

    3rd Floor, Attic, Habitable Attic, Etc

    I would appreciate some expert guidance with respect to a property I am under contract to purchase. The property is zoned R1 and class 4A. It was built in 1888 and has spent the past 30 years as a professional office. I intend to convert it back to residential one family use. The building has a...
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