Locksmithing/mold in safe


Fred wrote at 2013-05-05 15:09:27
I'm sorry, but the much of the what is stated above defies basic laws of physics.  First, there is no excuse for a safe manufacture to sell a safe that is constructed of we materials, unless they completely dry it prior to sale.  Second, the golden rod is a heater.  It works by heating the air in an enclosure hotter than the air was when it was open to the ambient air, thereby reducing the relative humidity to stop condensation.  By maintaining a higher temperature the air is kept above the dew point so that no condensation can occur.  In the case of a wet construction materials, the heat would not be able to maintain the low humidity, since additional water is is available from the wet materials.    The air in the safe will eventually reach 100 percent humidity,  The problems associated with moisture will return.  If power is lost to the heater for an appreciable period of time and the safe interior is permitted to cool, water will condense on every surface and material in the safe.    Desiccants work as long as the interior of the safe is not subjected to additional sources of water.

Andy wrote at 2013-06-22 21:30:59
While the writer is "partially" correct, concerning the "Golden Rod" being a heater, it only slightly becomes warm to the touch.   This slight rise in temperature DOES NOT heat the whole safe, the slight rise creates a convection current, causing the "warmed" air to rise and the cooler air to fall.

While the purpose is to keep the humidity at a low enough to keep relative humidity reduced, the air movement of the convection current ASSISTS the Golden Rod to perform this function.

Desiccants work fine as long as the amount of moisture that it contains is below the amount that it can hold.   Rechargable desiccant units, allow you to remove the "stored" moisture to allow the unit to continue to work.

NONE of this "DEFIES" any law of physics, but they do use them to function correctly.

Sorry, Fred but you need to become totally informed about how a particular item ACTUALLY functions, before making statements.

No claim was made about the total effectiveness of ANY particular product, only the basics were discussed.

Anyone having a moisture problem in their safe, under THEIR particular set of circumstances is advised to address the actual problem, and NOT simply try to band aid it with a "Golden Rod" or desiccant.  

Buckwheat wrote at 2017-02-15 12:27:18
Many fire rated safes use a very moist concrete liner to achieve the high temperature rating I.e. 1700 degrees for 1hour.  The concrete releases this moisture during a fire to keep the inside temperature low.  However, this concrete also causes high humidity to build up in the safe.  One manufacture recommends that you place objects which are subject to damage by moisture in an air tight bag.  They list jewelry, computer storage media, guns, paper, etc.  All things you would want to put in a safe.  


All Answers

Answers by Expert:

Ask Experts


Terry V. Andreasen (Andy)


Safe and Vault related Questions; Antique Safe Repair and Restoration; With over 42 years in the Safe & Vault industry, if I can't answer your question I know where to get the answer. Current Project: Restoration of an Ely Norris Cannonball Safe from the early 1900's. Will answer Safe & Vault related questions concerning age, value, restoration, moving, opening & repairing, parts, operation and history. Note: It is not my intention to teach you to open safes or to provide information which may aid in the unlawful opening of a safe. I will not give out drill points or information which I deem inappropriate.


44 years in the Safe & Vault Industry. Owner and Service Manager for one of the largest Safe & Vault companies on the West Coast. Graduate of Lockmasters Safe Lock Servicing, Safe lock Manipulation and Safe Deposit Lock Courses. Graduate of Locksmith Institute. Certified Instructor for the California Locksmith Association teaching Basic and Advanced Lock Servicing, Basic Safe opening and Repairing. Factory Trained by AMSEC, LORD Safes, LeFebure, Mosler, KabaMas, LaGard and Sargent & Greenleaf Author of "The Coffee Table Guide to Antique Safes".

SafeCrackers International and the National Antique Safe Association Safe & Vault Technicians Association (SAVTA)

The Coffee Table Guide to Antique Safes AllExperts.com

Graduate of Locksmith Institute 1972 Graduate Lockmasters Safe Lock Servicing 1974 Graduate Lockmasters Safe Lock Manipulation 1975 Graduate Lockmasters Safe Deposit Lock Servicing 1985 Instructor Certified - California Locksmith Association - 1985 Factory trained by AMSEC, MAJOR, STAR, Johnson-Pacific, Kaba-MAS, Allied-Gary, ISM, Lord, Brown Safe, EXL, Mosler, Diebold.

Awards and Honors
2009 - 2015 - Listed in AllExperts Top 50 Experts. All Expert Categories - Safes & Security Containers, Locksmithing, Antique Safes. Retired US Army Chief Warrant Officer (CW4), with 39 years of total service. With numerous awards from Vietnam, Desert Storm and Operation Iraqi Freedom. US Navy - 1971-1981 US Army Reserve 1984-2013 US Army Retired

Past/Present Clients
US Secret Service, FBI, BATF, Local Law enforcment agencies, Diebold, Hamilton Pacific, Red Hawk Int., Chubb International, Bank of America, Wells Fargo Bank, Mechanics Bank, El Dorado Savings Bank, many Credit unions and smaller banks. McDonalds, Togos, BurgerKing, TacoBell, Carls Jr. FoodMaxx, SaveMart, Lucky's, Albertson's, Raley's, Safeway, NobHill, Bell Markets, PW Markets. Great America, Century Theatres, Cinemark Theatres, UA Cinemas, and many homeowners and small businesses. Provide warranty service for lock and safe manufactures. Service Area is Northern California (Fresno to Oregon and Western Nevada)

©2017 About.com. All rights reserved.