Can this leak be repaired or need re-route?

[Daniel_123]

Hi all,
Found one pin-hole leak in the hot water pipe about 4-5 inch above the slab on the back of my vanity sink ( see the below 2 pictures) .
This hot pipe is the one that next to the wood stump and about 1 inch next to the outside wall with isolation including paper and foam. The leak location now at the same height base board. I can cut the base board a little to get down more

Want to ask:
1) is there a way to fix it using copper joins and solder? the space is narrow, will there be some risks to catch fire on the foam material?
2) or have to do re-route using PEX material? one plumbing company quoting me $1500 - 3000, which is too expensive.
thank you very much!

 

[Sylvan]

If you have a pinhole in a heating line it could have been caused by excessive velocity which you should check out

As for soldering if you rent an electric soldering tool there is no open flame but a fire extinguisher should be close by


https://www.ridgid.com/ca/en/rt175-electric-soldering-gun

 

[Sponsor]

 

[Jeff H Young]

fixed those many times . cut pipe on the pin hole couple with repair coupling not fun. you could even use a shark bite if the pipe was sound . Ive never used a shark bite in such situation but fixed dozens of nail holes at floor level. chance of fire yes. I have water handy usualy a squirt bottle. when soldering you are fixated on job at hand and tend to keep burning and get carless fire can go up stud bay quick if possible have buddy with squirt bottle. get baseboard out way clean pipe super clean put sheet metal to guard paper. simple process just do it right cant have water in pipes either. we do it often but in a perfect world its easy. do everything to make it right the first time

 

[Jadnashua]

YOu can make or buy heat shields to help prevent damaging the wood, but the electric is probably safer and faster. In either case, some water and/or a fire extinguisher is prudent. If you go with a shield, have a spray bottle and wet down the area around it first. The foam seal might get hot enough to melt or start to smolder, giving off some fumes, but it's supposed to be fire resistant.

 

[Daniel_123]

Try to find one experienced plumber to do this using electric gun. However this seems very hard to find one good guy in Phoenix Arizona area.

one plumber came. He said he can solder, but a little worried about the insulation material catching on fire when doing soldering.
He called his boss. His boss then call me back as a business man advertising re-route with lots of cost
So I worried how honest the the plumber and his boss.

 

[Breplum]

ProPress tool and fittings would possibly work, with some effort carving out a little wood probably.
You need a plumber with that equipment. Send them photos. Call around until you find one that owns the suitable close-quarters kit.
Or an electric heating kit. We sold ours because Viega Propress does it all.

 

[Sylvan]

ProPress tool and fittings would possibly work, with some effort carving out a little wood probably.
You need a plumber with that equipment. Send them photos. Call around until you find one that owns the suitable close-quarters kit.
Or an electric heating kit. We sold ours because Viega Propress does it all.

 

[Terry]

The black tar paper on the wall behind burns very quickly. Any flame on that and things can get very interesting. It's pretty simple to cut it away from where you are working though.

 

[Jeff H Young]

bend piece of sheet metal in a U shape to protect the building paper drywall is good too wet the paper