When should I consider replacing duct board in my house?

<span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start"></span>

Get More Home Improvement Answers from Tom

What should I do to touch up my kitchen counter top?

What paint should I use on my kitchen cabinets?

What paint should I use on my kitchen cabinets?

How can I fix a crack coming from my foundation up to the wall?