Curb for garage/house door

[David C. Macy]

What are the requirements for a curb on an access door from an attached garage to a house? Would gas vapors potentialy enter the home?

Are furnace vents allowed in the garage? Wouldnt there be the potential for C/O to enter the home thru the ducts?

[dcook1]

Originally Posted by dmacy

What are the requirements for a curb on an access door from an attached garage to a house? Would gas vapors potentialy enter the home?

Are furnace vents allowed in the garage? Wouldnt there be the potential for C/O to enter the home thru the ducts?

David,
Definetly mark this on your report as an immediate repair. That duct is a killler waiting to strike.

Also, does the door have a self-closer? Is it sealed well around the door frame? Is the weather-strip good?
Check all these.

[Brian E. Kelly]

Here curb not required from garage to house.

As David said that duct is not correct.

[Joe Funderburk, CMI]

This has been discussed before. Although it is standard practice, there is no code for the garage floor to be lower than the house (at least not in the IRC).

[Richard A. Hetzel]

A change in floor elevation between house and garage may not be required by code, but it is still considered good practice. A minimum of 6 inches lower than the house floor is a good idea.

I would think any duct which passes through the garage wall should have a fire damper at the wall, and it would be best if it had no outlet in the garage.

Code is a minumum requirement. Good practice frequently exceeds those minimums.

[David C. Macy]

I spoke to the building commissioner pertaining to the curb, supply register & auto closure.

There is no code for the curb. There was one at one time.
There is no enforcement of the auto closure. It is advised to install as a good practice.

Supply registers are allowed in the garage if they have proper fire ratings. There needs to be a 20 minute damper installed and the pipe needs to be of proper thickness. Return vents are definitely not allowed.

Anybody have any links or information on the 20 minute damper?

Thanks

[Brian E. Kelly]

03 irc R309.1.1

Duct Penetration.
Ducts in the garage and ducts penetrating the walls or ceilings separating the dwelling from the garage shall be constructed by a minimum 26 gage (0.48mm) sheet steel or other approved material and shall have no openings in the garage.

[Larry D. Kage]

Originally Posted by dmacy

Anybody have any links or information on the 20 minute damper?

Thanks

Here's one type that starts at 60 minute:

http://www.lorient.com.au/Literature...20seriesv2.PDF

[David C. Macy]

Originally Posted by bkelly2

03 irc R309.1.1

Would the register that is fired rated be allowed into the garage?

This is a product from Australia. Are there local products available?