If I didn’t wear the correct PPE I would not be allowed on site. My own risk assessment and the HSE guidance say that I must wear appropriate PPE for the task in hand, in this case height work with overhead hazards.
Well there’s a fucking pandemic destroying the lungs and other organs of a very sizeable portion of those who catch it. Two masks; one on you, one on the other person you’re with; is the safest option.
No excuses. Just wear one.