Take your roofs to the third dimension with our Shingle Upgrade Packs. Each packs contains thirty 9 1/2 inch shingle strips to add texture and depth to your terrain. The strips are made of 0.03 inch chipboard and are easily trimmed to the desired length with a pair of scissors or hobby knife. Apply to your buildings with the same wood glue used during assemble and overlay them with the desired offset to achieve the look you'd like.