FAQs

Common Questions About Insul-Dry.

1. How does Insul-Dry prevent corrosion?
Insul-Dry uses dry air injection under the vapor barrier to remove the water that is necessary for the corrosion process to take place.

2. How much air does the system use?
Insul-Dry uses about 2 CFM of dry air for every 400 Linear feet of pipe (12" OD or smaller) or about 2 CFM per 133 square yards of vapor barrier surface. New systems or systems under maintenance mode may require less air flow.

3. Do I need to shut down my system to install Insul-Dry?
No. Insul-Dry can usually be retro-fitted to your existing pipe or vessel insulation without a system shut down.

4. What is the operating cost?
The a rule of thumb (based on 4 cents per kilo-watt hour electric cost) is about .50 cents per linear foot per year or $200.00 per 400 linear feet per year.

5. How long will it take to recover my wet insulation?
Dry air injection removes water from the outside of the insulation first, slowly drying and recovering the thermal properties of the insulation and reducing thermal loss. There are many different combinations of insulation types and levels of failure, but in most cases the dry air injection will show significant results in a matter of just  months.

6. Who will install Insul-Dry?
Insul-Dry systems are easy to install. Insulators and mechanical contractors have installed the dry air injection systems after they received factory training. 

7. What is the payback time?
A recent installation had a calculated pay back on energy savings of 24 months. This payback did not include the fact that a plant shut down would have been required if the insulation was replaced. A plant shut down would have been cost prohibitive and was not a viable option. Another scenario on 8000 linear ft of insulation had a payback of less than 17 months.

8. Why should I install Insul-Dry on all new piping and vessels? Why not just wait until it has failed?
The labor and material cost are lower if Insul-Dry is installed when a system is new or in the process of being re-insulated, since there is little added labor and no additional material other than the Insuldry components. Insul-Dry will keep new insulation dry indefinitely. Dry insulation will not support external pipe and vessel corrosion or excessive thermal loss. Insul-Dry will pay for itself in energy savings alone vs. wet failed insulation.