@Jd Martin I have successfully used regular painters caulk to fill in small holes in panelling.

Not only can they provide you with referrals to build out your core 4, but they can help with any real estate related vendors - insurance, handymen, painters, landscapers, electricians, roofers, and so on. 

I also have painters, electricians, tile and flooring and carpet, roofers and siders.  

Find your own plumber, tile installer, painters.

I just completed my first flip, but had a many problems including my contractor stealing my money, and an electrician and painters who performed terrible work. 

I used sheets of foam that i cut down to fit the door and temporarily attached them to the door, I used painters tape. 

I started building up contacts of good quality workers from all lines of work including, electricians, carpenters, plumbers, HVAC, drywall, painters you name it and if I don't have the contact ill make it a point to find only the best of whoever is needed on the job.

Excellent painter and sheet rock installer/wall repair.

Great job conveying the information and mad props for finding painters to paint the interior and exterior so cheaply!!!

However, it takes less effort to create/keep a decent team than it does to do this with no team or a poor team.Team for maintaining (not including acquiring) buy n hold rentals should include: handyman (use him do everything he is qualified for as it will be cheaper than contractors), plumber (for items beyond the handyman), HVAC, painter (my painter on larger jobs is faster and price competitive with the handyman), popcorn ceiling remover, laborer, gardener, cleaning crew (low cost and good that can be booked on a week or so notice), mortgage broker (even in not acquiring you want someone looking at lower rates as well as potentially pulling money out), RE lawyer, a tax person.