sealant adhesive

Please find image 1 below of a vertical soil pipe (aka stack), a rainwater downpipe, 2 boss connectors and their connecting waste pipes. Please also find on this image arrows pointing to the bricks would like to remove. The issue is that boss connector 1's connection to the stack is leaking...

Hi, I need to bond and seal a piece of timber which is already over painted with a sikkens oils based paint to some bricks. Whats a decent sealant adhesive that will work on oil based paints? Is stixall any good and will it adhere to timber that has an oil based paint? Any advice and...