Handyman if you know one you trust to do the roof sealing correctly would do both the pipes and the roof jacks boots at same time.
Pipe roof jack with rubber adjustable collar.
You will apply a 100 exterior or marine rated silicone caulk to the top of the existing rain collar attached to the roof flashing and also to the underside of the new rain collar.
The elastomer collar has been tested for ultraviolet ozone and weather resistance and heat tested to 180 f.
Gibraltar building products 1 4 in.
For commercial or residential installation.
Thd sku 206359.
Oatey retro master roof flashing 1 4 in to 4 in x 8 in epdm rubber vent and pipe flashing.
This adjustable pipe flashing can accommodate 1 1 4 in 1 1 2 in 2 in.
Gibraltar building products 11 in.
Adjustable for 3 in 4 in.
Roof vent flashing rubber collar type number of pipes 1 1 4 to 5 3 4 in pipe size in item 39at41 mfr.
Rubber electrical mast split pipe boot roof flashing in black model 81746.
Pipe roof jack with adjustable collar made of galvanized steel.
Aluminum 15 galvanized.
Adjustable pipe flashing with aluminum base and rubber collar 23190 the home depot.
Slide the new rain collar down over the pipe to the top of the existing collar.
Aluminum base vent pipe flashing with adjustable rubber collar in black model 81840.
On the boots if you have metal roof jacks with rubber boot seals on top with many models the rubber seals can be popped off.
Acquire the 12 in.
Our proprietary compression collar prevents the rubber from the inevitable relaxation away from the pipe and it is designed not to cut or notch the silicone.
This adjustable pipe flashing has a 24 gauge galvanized steel base suitable for commercial or residential use.
Adjustable rubber collar allows for a snug fit around the pipe this adjustable pipe flashing can accommodate 1 1 4 in 1 1 2 in 2 in.
Roof jack 6 saddle stock 1 material.
It fits roof pitches from flat to 20 12 for pvc pipes up to 2 and 18 12 for 3 and 4.
Roofer unlikely to do the pipe replacement probably need a plumber for that first.