Whole House Repiping in Milton, GA

Hard freezes are not frequent in Georgia, but when one arrives, the pipes that suffer are nearly always the same: lines in outside walls, in attics, over garages and near crawlspace vents. Whole house repiping is the one moment when every route in the house can be chosen fresh, so it makes sense to plan for the next cold snap from the start. Alpha Plumbing and Sewer looks at where a Milton house has frozen before, or is likely to, as part of laying out the new lines.

Where old routes leave pipe exposed

• Exterior walls, especially behind kitchen sinks set under windows.
• Unheated attics, where lines were often laid above the insulation.
• Walls and ceilings shared with an unheated garage.
• Floors that overhang the foundation, such as bay windows and bump-outs.
• Crawlspaces with open vents, particularly along the rim joist.
• The short runs out to hose faucets.

Routing the new lines to stay warm

The simplest protection is location. A good plan keeps supply lines in interior walls and inside the heated envelope of the house wherever it can. When pipe must cross an attic, it can be run low, close to the ceiling, with the attic insulation over it instead of under it, so warmth from the rooms below reaches it. A kitchen sink on an outside wall can often be fed up through the floor or along an interior partition rather than through the exterior wall itself. A manifold layout helps as well, since each line can follow its own protected path.

Insulation and sealing

Where pipe has to pass through unheated space, foam pipe insulation slows heat loss, and sealing the gaps that let cold air in matters just as much. A pipe in a well-insulated wall can still freeze if a draft blows across it through an unsealed opening. Heat cable is a last resort for a run that truly cannot be moved, and it should be installed only as its manufacturer specifies.

What the material changes

PEX can stretch somewhat as the water inside turns to ice, so it often survives a freeze that would split copper or CPVC. It is not freeze-proof, though; fittings can fail, and repeated freezes take a toll. Rigid pipe gives little warning, and the split often reveals itself only when the thaw arrives. Material is a second line of defense, never a substitute for keeping the pipe warm. The overview of whole home repiping compares the materials on other grounds.

Outdoor faucets and shutoffs

Hose faucets freeze more often than anything else on the system. A frost-free model, with its valve set back inside the heated wall, protects only if the hose is removed before cold weather, because a connected hose traps water in the barrel. An indoor shutoff on each outdoor line lets you drain it for the winter. Outside of a repipe, swapping those faucets and adding the shutoffs is a straightforward faucet and valve repair. If a pipe bursts before the new system is in, close the main shutoff and call for emergency plumbing.

Milton permits and the underground inspection

Milton's Community Development Department issues construction permits and schedules inspections. The city code requires a permit for plumbing work, and the city issues them to contractors with a license or to owners living in the home being altered. If any part of the project puts pipe underground, such as a new line out to a detached building, the code also calls for an underground inspection before the trench is backfilled.

Freeze questions for a Milton repipe

Will PEX burst if it freezes?

Less often than rigid pipe, because PEX can stretch somewhat as ice forms inside it. It is not immune, though. Fittings can crack or pull loose, and a line that freezes again and again can still fail. Real protection comes from routing the pipe through heated space and insulating any section that has to pass through a cold area.

Can new supply lines run through the attic?

They can, as long as they are protected. The usual approach is to run them low, near the ceiling below, with the attic insulation covering them so warmth from the house reaches the pipe. Lines laid on top of the insulation, or out along the eaves, sit at nearly outdoor temperature and are the ones most likely to freeze.

Should the water be turned off if we are away during a freeze?

It is a sensible precaution. Closing the main shutoff and briefly opening a faucet on the lowest floor relieves the pressure in the lines, so a pipe that does freeze has far less water behind it. Leave the heat on at a moderate setting as well. A repipe that puts a clearly labeled main valve in an easy spot makes that routine quick.

Ready for the next cold snap

Talk through freeze-safe routes for the new pipe in your Milton home with Alpha Plumbing and Sewer at (404) 409-4448.