- HO scale 36" (25 pieces) cork roadbed from Midwest brand. This item has become scarce as the cork shortage continues. It has been on back order for most distributors and It is even hard to find on public sites like this. However today is your luck day because here is a full box, ready to be laid out on your door step. This is new and is a complete box. Cork is the best underlayment for models layouts and that is why it is in such high demand. It is an excellent sound absorption, easy to lay and can be nailed or glued down which ever you prefer. Midwest cork roadbed is Crafted from the highest quality cork material. Add this to your layout today and enjoy the remarkable sound absorption and realistic design it brings to your model railroad.