The higher the number, the wider your teeth will be. Here is an example of the plastic molded zippers and their different size teeth. And another example, this time with nylon coil zippers: The higher the number, the wider the coil. It's that simple! I hope this helps you determine the right zipper for your project.
1 The cost to repair a chimney crown will depend on the size of the chimney and how easy it is to access the chimney. 2  Depending on the severity of the job, the average cost of chimney crown repair will range anywhere from $400 to as much as $2,200. If the chimney crown is extensively damaged, it will often have to be rebuilt. 2  If this is the case, you will be looking at a price closer to that $2,000 range. 3  However, if the chimney only has smaller hairline cracks, then the repair could be as little as $400.
You will need to grind out the crumbled and cracked mortar and replace it. It may cost you $200 to $500 for materials and tools to do this job yourself. A mason or contractor will charge you $1,000 to $1,500 for a tuckpointing job on a chimney.Your costs to repair brick work can vary.More extensive damage will mean higher costs.Masons or bricklayers may also charge more if a sidewalk, patio or chimney is difficult to access. mason or contractor will charge you $1,000 to $1,500 for a tuckpointing job on a chimney. Your costs to repair brick work can vary. More extensive damage will mean higher costs. Masons or bricklayers may also charge more if a sidewalk, patio or chimney is difficult to access.