Topics: Tin roof 30 years old, white powdery look when dry; Replacing joint mortar between balcony stones - weather considerations; Appling a small amount of parging to a newly closed off window – adhesion and pre-aging for colour matching; PEX water hammer  and air access valve for new sink; Aluminum planks for third story balcony – fiberglass deck made of composite; Field stone facing with Unistone above the lower edge now showing signs of holding water on the wall. Sunday : Window and door screens : cleaning and fixing before re-installing as the bugs start coming out.