for House repair and painting expenditure for which the loan is taken, there is two senario,
1) Such repair is a Capital repair then it is treated as improvement and there is no deduction of interest and principle because it is capital expenditure and it is available for deduction at the time of Sale of House property on which capital gain is arises.
2) the second thing is that if it a repair for maintaining the house in that case it is trated as revenue expenses and intereat Amount is deductible are as follows
a) if it is a rented house property then whole amount of interest paid on loan is allowed u/s 24 but no principle deduction is allowed
b) if it is a self occupied property in that case interest amount is restricted to RS 30000 is allowed as deduction and no principle amount is deductible.
Considering the above provision, i conclude that it is trated as revenue item because normally painting and repair is made for maintenace of home or upkeep of home. it does not improve the life of house property also value is insignificant. there fore,
you can claim interest under house property but depends on above situation whether it is owned by you or give on rent but no deduction u/s 80c is available for principle payment of loan.
if any mistake is arises please freely give reply to coorect me .