fireproof

[BLT]

I have a workshop that never has been proprely finished. It is studs and shiplap sheating on the outside. I would like to finish it off with insulation and some sort of drywall or paneling that would be fireproof. I do welding, cutting, grinding ect. The way it is now,I go out a couple of times after I finish working to check for fire, I would like to eliminate that step. I was wondering about that concrete board used for bathrooms, would that be a good choice? Is there a fireproof tape for the joints?

 

[keh]

I wouldn't eliminate the going back to check step. However, why not use ordinary roofing tin on the inside?

KEH

 

[Gun guru]

Check your building codes, but I think 5/8" drywall would be adequate. Drywall on ceiling too.

 

[old]

Sheet rock or roofing tin will work well. My self I prefer the roofing tin because sheet rock will not stand up well if some how it gets wet. Plus roofing tin will reflect sparks etc and sheet rock will hold the sparks
Hobby farm

 

[BLT]

This may be a dumb question, but sheetrock is fireproof? I thought it was coated with paper??

 

[Gun guru]

I think that drywall is rated as a firestop. Like between a garage and a house.

 

[Fergienewbee]

Drywall used to come regular and fire-rated, but almost all now carries a rating. Two layers of 5/8" drywall over wood studs (one side) should be rated at one hour. Apply the layers perpendicular to each other. It only needs to have the joints taped; doesn't need to be finished. Check with your local building/fire inspector.

The hour rating comes from Underwriters' Labratories where they take a certaiun wall construction and set a fire in a test room. The rating comes from the amount of time it takes the construction to fail. Rating can be from one to four hours, depending on number of drywall layers.

Larry in Michigan

 

[Anonymous-0]

Sheetrock is far better for a fire stop. Doubled as suggested elswhere is very correct. Insurance companies have insisted that every sixty foot even in hog house attics must have a double drywall fire stop.


PS. they are very effective, to say the least. A few times we installed the drywall, and then cover the bottom three foot with steel for durability.

 

[Anonymous-0]

The tin shouldn't be shiny, like aluminum. My helper got sore eyes and a burn from the reflection off a sheet of stainless that was leaning against the wall.

 

[IH2444]

I would put up drywall and metal over it. It is whatI did for my welding corner.

 

[Eric SEI]

But that little amount of paper isn't enough to make a difference in case of a fire. I saw on TV the other day that there is now paperless drywall, I think that was This Old House.

 

[T_Bone]

Hi BLT,

Experiment:
Take some portland cement and water it down to where it will soak into the wood, let it sun dry, then take a weed burner and see if you can start the 2x4 on fire.

Second experiment:
Build a small wall section out of 2x4 and 1/2" sheetrock cover. Mix 5/1, 5 sand- 1portland and sling it onto the sheetrock for a 1/16 thickness coating, let sun dry.

Test with a weed burner.

That was the spec's on a 9acre Jr high school for fire proofing the steel beams and walls back in the 70's. Not exact, but in general.

I was impressed.

T_Bone