I have a booklet from Canada Revenue Agency entitled "Using Your Home For Daycare". I read through the section about Business Use of Home Expenses and it doesn't say anything about not being able to claim both 'rooms for daycare use only' and 'Rooms used for both daycare and personal living'. There make very clear statements elsewhere about what cannot be claimed, so I believe they would have done so for this section if it was not allowed. You just have to make sure your business-use-of-home expenses are not more than your net income before deducting the use-of-home expenses.

I will be claiming both types, I plan to do the calculations for each and then add the two together.