How to keep mice, critters from getting into duct insulation that is under a house that is on piers.

How do you keep mice, critters from getting into duct insulation that is under a house that is on piers?

Views: 1938

Reply to This

Replies to This Discussion

A former owner where I did some repair work had evidently tried to keep the rodents out by nailing a flattened tin can over their entrance. Mice or rats I never determined, but they chewed right through that makeshift cover and continued to use the rafters as they wished. 

At a minimum I would recommend T&G plywood and hope they wouldn't be able to detect any warmth from above.  When the cold season comes they would make short work of 3/4" plywood.

There are some concrete based 4'x8' panels that besides being heavy might be better at keeping them out.  Of course mice will be a lot easier to stop than their larger cousins.

An abundance of traps to eliminate them before they start chewing their way in is always a good defense.  I try to avoid poisons and local domestic animals might be affected.

Bud

If your ducts are below the bottom sheathing I would wrap them or box them in with metal.

The ducts are below the floor and above the dirt under the houses. It sounds difficult and expensive to wrap them or box them in with metal.

mothballs have worked for decades

You have to keep it out of their reach thus a Sealed crawl is the best option

For a vented crawl, make sure all your insect & rodent proofing is in place also; Using flex duct is not recommended, nor fiberboard, just metal ducts sealed with insulation on the outside. Better to have to make a few cosmetic repairs occasionally then let them get into the system.

If an existing issue, how are they getting in, in some cases it is from above & that needs to be dealt with also: http://blog.sls-construction.com/2010/safety-sunday-rodent-prevention

We have used hardware cloth (1/4" mesh wire) and then sprayed it with single part foam. I have heard of used cat litter (urine smell) sprinkled about and moth balls as other options.

RSS

Videos

  • Add Videos
  • View All

Latest Activity

Jan Green liked Chris Laumer-Giddens's blog post Rock Wool Insulation for Floor of High Performance Tiny House
10 hours ago
Carly Maltais posted a discussion

Comparing the AirCycler g2 and HRV [Infographic]

AirCycler is excited to share that we have recently launched a new version of our…See More
15 hours ago
SolyMoly, Inc posted discussions
16 hours ago
Home Energy Magazine's blog post was featured
21 hours ago
Brad Cook replied to Jim Tenhundfeld's discussion LED's and motion sensors
"I don't know what it stands for. See RAB.com"
Saturday
Jim Tenhundfeld replied to Jim Tenhundfeld's discussion LED's and motion sensors
"That makes sense since the same thing happened with dimmable CFL's.  I have never heard…"
Saturday
Brad Cook replied to Jim Tenhundfeld's discussion LED's and motion sensors
"My first thought is whether the motion sensor and/or the LED lamp is a cheap one. I had so many…"
Saturday
John Wagner joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
Friday

Home Energy Pros

Welcome to Home Energy Pros – the unique digital community by and for those who work in the home energy performance arena.

Home Energy Pros was founded by the developers of Home Energy Saver Pro (supported by the U.S. Department of Energy) and brought to you in partnership with Home Energy magazine.  Home Energy Pros is sponsored by the Better Buildings Residential Network. Please honor our Guidelines

© 2017   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service