How To Negotiate Repairs On Home Sale

[Ray King]

-I have Single Family Home under contract price 220k - buyers inspection noted 2 items:

1) roof (shingle wear) replacement estimate:4,500-8,500. I was told the roof had 5-7 years left/no leaks

2) electric panel (does not have 1 main breaker to shut down panel at once) estimate:3500k - 4500k.

The panel is called a "split bus panel" with 4 main shut-offs. Code is up to 6 main shutoffs.

Buyer's appraisal came in at 220k (at least that is what buyers realtor said). 

How do I approach the negotiation of the additional costs? Especially, when the appraisal is equal to the sale price with an "as is contract". Thanks to anyone who can help me.