First, have you tested it with real home owners and diy experts.  Before you even approach retailers and distributors, you should be making some buzz for your product.  Create videos and post on YouTube on how great it works.  Have friends, family and strangers to test it out and give you honest critiques.  Get people to start talking about your product before you get to the retailers. 

Then I would first make sure that you have a put together a professional business plan, a proposal, and a clear and consice presentation on your products's benefits, costs, suggested retail price.