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: 2326

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

Latest Activity

Jonathan Beers posted a discussion

MGE hiring for my job

I'm retiring next spring, and MGE is hiring:…See More
17 hours ago
Summer Reyes's blog post was featured

Equipment We Use: Detecting Water With Infrared Cameras

You know water is somewhere on the property, you can smell the mildew, but can't determine the…See More
18 hours ago
Profile IconGlenn Hourahan and Joseph Frasier joined Home Energy Pros Forum
18 hours ago
Alfredo Baccari added a discussion to the group Job Board
Thumbnail

HERS or/and BPI Energy Inspector in SF Bay Area (SAN JOSE, CA).

ELEM3NTS is a leading energy efficient consulting company specializing in residential homes. We…See More
20 hours ago
Alfredo Baccari joined Diane Chojnowski's group
Thumbnail

Job Board

This group is for posting jobs related to all aspects of the home performance industry including…See More
20 hours ago
David Byrnes's blog post was featured

Strategies for Hiring and Interviewing for Home Performance Professionals

Hire slow and fire fast.  It’s a phrase that experienced managers and human resources professionals…See More
23 hours ago
Dara Bowser replied to Don Fugler's discussion joining ducts in the group HVAC
"Good to hear you have clean dryer ducts Don. The dryer duct issues that we run into are…"
yesterday
Don Fugler replied to Don Fugler's discussion joining ducts in the group HVAC
"David, If the IMC mandates metal dryer duct and prohibits metal screws, they must be accepting…"
yesterday

Photos

  • Add Photos
  • View All

© 2017   Created by Home Performance Coalition (HPC)   Powered by

Badges  |  Report an Issue  |  Terms of Service