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Thread: Rodent-Proofing a Room / Mohs Hardness

  1. #1 Rodent-Proofing a Room / Mohs Hardness 
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    Hello,

    I want to build a rodent-proof room. All in all, a room within a room. In my search I have found out from several sources that rat's teeth rank up to 5.5 on the Mohs hardness scale.

    Does this mean rats will be unable to get inside a sealed room made of a material harder in rank on the the Mohs scale?
    I am thinking of covering the outside of the sealed room with 0.6 mm thickness steel of 0.75% carbon content.(Ranking as a hard steel). Mohs scale states the hardness of hardened steel is of 7.5 to 8 mohs. Is my 0.75 % carb content steel hardened steel? According to wiki hardened steel is steel that is medium-high in carbon(check) that has been quenched followed by tempering(both steps waiting to be confirmed by supplier).

    The hardness of steel files is 6.5 mohs and of carbon content 0.8 to 1.3 %. Does that mean that my 0.75% carbon steel would fall somewhere around 4.5?
    (Average of 1.05% carbon for 6.5 mohs)(0.75*6.5/1.05 --> approx 4.5 mohs)

    Does the thickness of the steel come into play? It's 22.5 gauge thickness(0.6mm).
    Does the support against which the steel will be nailed come into play?(it'll be plaster)

    On a sidenote, will rats eat through rubber objects/fabric even if no "human comestible food" is within?
    Similar for books?

    Thank you for your time,

    Gabriel


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  3. #2  
    Time Lord
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    Rodents typically move within a house via oversized holes pipes and wires pass through. These animals have been in contact with soft copper pipes for over a century. They simply don't gnaw it.

    On the sidenote, hundred-year-old rat-infested houses also contain cloth and rubber insulated electrical wires (both live and dead) with no sign of gnawing.


    A pong by any other name is still a pong. -williampinn
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  4. #3  
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    Hardware cloth (wire mesh) has been used successfully for rodents for a long time. We used to have a corn crib covered with that stuff.
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  5. #4  
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    To up your protection, you could make a room within a room within a room, Russian doll style
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  6. #5  
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    Quote Originally Posted by tridimity View Post
    To up your protection, you could make a room within a room within a room, Russian doll style
    This is exactly what I plan on doing . Could you give me more information on the following :

    Does this mean rats will be unable to get inside a sealed room made of a material harder in rank on the the Mohs scale?
    I am thinking of covering the outside of the sealed room with 0.6 mm thickness steel of 0.75% carbon content.(Ranking as a hard steel). Mohs scale states the hardness of hardened steel is of 7.5 to 8 mohs. Is my 0.75 % carb content steel hardened steel? According to wiki hardened steel is steel that is medium-high in carbon(check) that has been quenched followed by tempering(both steps waiting to be confirmed by supplier).

    The hardness of steel files is 6.5 mohs and of carbon content 0.8 to 1.3 %. Does that mean that my 0.75% carbon steel would fall somewhere around 4.5?
    (Average of 1.05% carbon for 6.5 mohs)(0.75*6.5/1.05 --> approx 4.5 mohs)

    Does the thickness of the steel come into play? It's 22.5 gauge thickness(0.6mm).
    Does the support against which the steel will be nailed come into play?(it'll be plaster)

    On a sidenote, will rats eat through rubber objects/fabric even if no "human comestible food" is within?
    Similar for books?

    Thank you,

    Gabriel
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  7. #6  
    Time Lord Paleoichneum's Avatar
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    Why not just go with a coating of a medium hard or hard cement?
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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  8. #7  
    Brassica oleracea Strange's Avatar
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    Can I ask what the point of this bizarre-sounding exercise is?
    ei incumbit probatio qui dicit, non qui negat
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  9. #8  
    Forum Radioactive Isotope skeptic's Avatar
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    Of course rats will not gnaw through anything harder than their teeth. In fact, they will not gnaw through heaps of things that are softer than their teeth. Why should they?

    Rats are happy gnawing anything made of cellulose, but anything that appears like rock , they will not attack.
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