Final answer:
The main differences between single scrim and double scrim are in construction, with single scrim made of one layer of fabric and double scrim composed of two layers. This impacts their respective uses, strength, and cost, with double scrim being more durable and suitable for heavy-duty applications and single scrim being more cost-effective.
Step-by-step explanation:
The difference between single scrim and double scrim can be explained through their respective properties and uses. Option 1) is correct; a single scrim is made of one layer of fabric, and double scrim is constructed with two layers. This directly affects their application as mentioned in option 2), with single scrim being suitable for lightweight use and double scrim being tailored for more heavy-duty tasks. Option 3) extends the explanation to the differences in strength and durability, with double scrim offering more resilience due to its dual-layered structure. Lastly, option 4) highlights that single scrim is generally more cost-effective given that it uses less material and is simpler in construction compared to double scrim.
So, summarizing, single scrim and double scrim differ in construction (one vs. two layers), application (lightweight vs. heavy-duty), strength and durability (less vs. more), and cost-effectiveness (more vs. less).