Key points
- PEX is flexible plastic supply pipe used in most newer homes.
- The pipe itself rarely fails — fittings, crimp rings and manifolds are the usual leak points.
- Manifolds are often hidden in a closet or utility wall.
- Freezing can still split fittings in exterior walls and garages.
Where PEX systems leak
- Crimp or clamp rings that were not seated correctly
- Brass or plastic fittings that crack
- Manifold branch connections
- Connections at water heaters, toilets and sinks
- Nail or screw punctures during later remodels
Signs
- Damp drywall near a manifold closet or utility wall
- Water bill rising — try a water meter leak test
- Stains on ceilings below bathrooms
If one leaks
Shut off the main — see main shut-off guide — then call a plumber for the fitting and us for the water damage. Leaks in new homes can also raise builder warranty questions — see new construction moisture problems. Vault documents the damage, records daily moisture readings, scopes in Xactimate, and bills State Farm, USAA, Allstate, Farmers, and Bear River Mutual directly.
Real example: Vineyard case study: PEX manifold failure in new construction. See also pipe types and how they leak.
PEX leak?
Call (385) 250-2825 — answered live 24/7 by the Vault crew.
Inside Provo city limits we guarantee a crew within 45 minutes, Mon–Sat 8 AM–5 PM. See Provo emergency water damage.