© 16 March 2020

by Louisville Climate Action Network


PO Box 4594

Louisville KY, 40204

502.451.COOL (2665)

Monday--Friday, 9am--6pm




Cut your energy use, save money and reduce carbon emissions.

Getting Started

An energy audit will allow you to make the best choices when investing in your home's energy efficiency.  Learn about energy audits.

Find a building performance auditor.

Learn how to conduct an energy audit yourself here and here.

Before Caulking

Before opening your tube of caulk, press "backer rod" into gaps of a 1/4-inch or more.  Backer rod is closed cell foam rope that comes in a range of diameters, from 1/4-inch to two inches.  It's costs less than caulk and makes caulking go faster. 


Choose a 100% acrylic eslatomeric caulk, such as "Big Stretch," for both interior and exterior use.  It is very elastic, comes in clear and 12 colors, can be painted, lasts long and cleans up with water.  Watch this video on how to apply caulk.*

* LCAN prefers not to endorse a proprietary product, but this one is a stand-out as far as we can tell.  

Install Gaskets on Outside Walls

Unless your walls have been insulated, remove switch plate and receptacle covers on perimeter walls, insert inexpensive foam gaskets (available at hardware and home-improvement stores) and re-install the covers.  They're not usually needed on interior walls.  

More Weatherizing Tips

This article and video from "This Old House" offers how-to advice on other ways to fix gaps around doors and windows and in walls.