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: 360

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

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Hal Skinner replied to Hal Skinner's discussion 'YGRENE' super fund for energy upgrade financing
"Thanks Susan.  It is appreciated."
8 hours ago
Adin Maynard commented on Corbett Lunsford's video
Thumbnail

Beyond Blower Doors: Zonal Pressure Testing

"Great video. Your approach of simplifying the reading as X/50 = percent leaking to outside (with…"
10 hours ago
Chris Dorsi posted an event
Thumbnail

2015 Habitat X Summer National Conference at Big Sky Resort

July 21, 2015 to July 23, 2015
The 2015 Habitat X Summer National Conference will take place at Big Sky Resort, just down the road…See More
11 hours ago
Royce Gleason posted a status
"The passion to learn and gain more advanced energy efficiency techniques, news, videos and much more from home energy pros across the globe."
12 hours ago
Profile IconCristy Kraus, Will Tastad, Royce Gleason and 1 more joined Home Energy Pros
14 hours ago
Susan Davison replied to Hal Skinner's discussion 'YGRENE' super fund for energy upgrade financing
"Hal,   With the above questions, let me first state 'let the buyer beware'. All of…"
16 hours ago
Susan Davison replied to Hal Skinner's discussion 'YGRENE' super fund for energy upgrade financing
"Within California, there are multiple PACE programs available to consumers and business…"
16 hours ago
Chris Dorsi added a discussion to the group International Home Performance Forum
Thumbnail

A Proposal for Expanded International Collaboration

This group was formed in conjunction with an article to be published in the May/June issue of Home…See More
16 hours ago

© 2015   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service