The biggest issue is porous materials like wood.

They don't have an actual text book to read from but rather it is all interactive and they cover the material (supposedly) that would be in a text book.For those who have their licenses, how did you go about it?

Could be $15K if you do all the work yourself and just need to buy materials.  

This is not a promotion for their services, but it has been an excellent tool for my direct mailings. www.microbilt.com

I usually use a very rough estimate of the labor will cost the same as the materials.

Other guys will waste the day away and run off with your money or materials.

Second, you will learn to help them out by running errands (picking-up materials), supervising contractors working on properties, making the lunch run for the mentor etc. etc. etc.  

Repairs are billed at $25/hour plus cost of materials.

But if the boards are a little warped, they should relax and flatten on their own after some time.Question: Did the installer let the material acclimate to the room for a couple of days before installation?

If you are soliciting unknown people you need to look at syndicating and learning about that first.Any promotional materials you would need to read Bigger Pockets rules and learn about becoming a paid member and posting in the marketplace section.Thanks