No it should not be ok unless the OP reorient the dipoles.

the "board" or in this case the reflector is not the problem , the problem is the orientation of the dipole and the director elements. I am assuming the reflector is not a 1 or few elements thing but rather a big surface. In your case there are no director elements therefore the orientation of the bow ties or dipoles determines the polarization of the antenna , either horizontal or vertical . All commercial TV station use Horizontal polarization therefore the dipole element or elements should be horizontal or paralell to the earth plane , obviously an antenna is designed so the directors have the same orientation of the dipole system.

For the amount of US Programming that the canadian stations carry and living in bathurst and sheppard I would not ven worry about the major US networks from buffalo. Get an indoor Non Amplified VHF/UHF antenna and try with that one , from a second floor in St Clair/Oakwood a 5 cad version works like a charm althought you have to rotate it manually for CityTV but who cares!. It is your TV and this is a free country so you do not have to follow my advice , lol.