# Polybutylene Pipe Replacement in Dallas > Polybutylene pipe replacement in Dallas: we confirm gray plastic is PB, not PEX or CPVC, then replace the pipe and its crimp fittings. Get an estimate. URL: https://fullboredallasrepiping.com/polybutylene-pipe-replacement/ We confirm whether your gray plastic supply pipe really is polybutylene, then replace the PB lines and their crimp fittings with a listed PEX or copper system, inspected by the City. Call (469) 846-9377 Last Updated: November 10, 2026 Read the print Gray plastic is not proof; PB carries codes such as PB2110 printed along the pipe Pipe and fittings We replace the PB lines and every PB crimp fitting inside the boundary, not just the joints that leaked The home inspector circled it in red: gray plastic pipe at the water heater, “possible polybutylene.” Or you have had a fitting let go under a bathroom sink and want to know if more are coming. For polybutylene pipe replacement, Dallas homeowners should start with a question many skip: is the gray plastic actually polybutylene? [Fullbore Dallas Repiping](https://fullboredallasrepiping.com/) replaces water supply lines in Dallas homes, from a single bathroom branch to the whole house. We confirm the material first, from the printing on the pipe and the fittings. Once we know it is PB, we replace the PB supply lines and their crimp fittings with a listed PEX or copper system, test it and have the City inspect it. When the whole house is PB, the scope is [whole-house repiping](https://fullboredallasrepiping.com/whole-house-repiping/); when only part of the house has it, [partial repiping](https://fullboredallasrepiping.com/partial-repiping/) with a clear boundary can fit. ## What we check on the first visit We identify the pipe before anything else. Gray plastic is not proof. Some PEX is gray, some CPVC looks pale gray in a dim closet, and a house can hold all three after years of repairs. So we read the printing along the pipe: PB usually carries a code such as PB2110, PEX says PEX with an ASTM F876 or F877 listing, and CPVC says CPVC with ASTM D2846. Our [pipe identification guide](https://fullboredallasrepiping.com/guide/identify-water-pipe-material/) shows each one. Then we look at the fittings. PB joints are crimp rings, aluminum or copper, over insert fittings that may be gray or white plastic or copper. You will find them at the water heater, under sinks and at toilet stub-outs. We check every spot where pipe shows, note any past repairs and ask about leaks: where, when, and whether they were at a joint or along the pipe. ## Why polybutylene keeps failing PB failures cluster at the joints. Early systems used plastic insert fittings that could crack, and crimp rings that only seal when they are compressed just right; a ring crimped too loose or too tight can leak years later. The pipe itself can also weaken from the inside over time. Polybutylene’s problems have been widely linked to the disinfectants in treated drinking water, though no single cause explains every leak. What sets PB apart is the pattern. A leak at one fitting says little about where the next one will come from, because every crimped joint in the house shares the same history. That is why patching one joint rarely ends it, and why our [repair-or-repipe guide](https://fullboredallasrepiping.com/guide/repair-or-repipe/) treats confirmed PB differently from a single copper leak. ### Was my house built in the PB years? PB went into many U.S. homes built from roughly the late 1970s into the mid-1990s and was widely written up in class-action litigation in the 1990s. The U.S. Census Bureau’s 2020-2024 American Community Survey puts the median year built at 1980 in ZIP 75248, 1989 in 75252 and 1991 in 75287. ZIP 75248 also had the most Dallas permit records explicitly describing interior water-supply repiping in City open data since January 2024: 10 of 100. None of that tells you what is in your house. The [Far North Dallas page](https://fullboredallasrepiping.com/service-areas/far-north-dallas/) covers that area. Found gray plastic pipe under your sink? We read the printing and check the fittings, so your scope is set on what the pipe really is. Call (469) 846-9377 ## Replacing the pipe, not just the joints When we replace polybutylene, we replace the PB lines and every PB fitting inside the boundary, then reconnect each fixture with new stub-outs and stop valves. Swapping fittings while keeping the PB pipe leaves the aging material in service. Most PB houses go to [PEX repiping](https://fullboredallasrepiping.com/pex-repiping/), since flexible tubing follows routes much like the old PB did; [copper repiping](https://fullboredallasrepiping.com/copper-repiping/) is the other option. On a slab house we usually run the new lines through the attic and drop them down interior walls, and the PB in the slab is capped and left in place rather than dug out. Your written scope names every PB run left disconnected, which matters later when you sell the house. ### Where PB hides after earlier repairs Many PB houses have already been patched. A previous owner may have redone one bathroom, or a leak repair may have spliced copper into a PB run with a transition fitting. Those splices are easy to miss, and PB left between two newer sections keeps its old joints in service. We trace each fixture back toward the water heater to find them. Some service lines were PB too. A buried line between the meter and the house is outside an interior repipe; the [service line guide](https://fullboredallasrepiping.com/guide/repiping-and-water-service-lines/) explains that boundary. ## Insurance, inspections and selling the house Buyers, home inspectors and insurers flag PB more than any other material. We cannot promise what an insurer will decide about coverage, renewal or premium. What we can give you is a clean paper trail: a written scope listing the PB replaced and the new material, and the City’s inspection record. Replacing supply piping is permitted plumbing work in Dallas; we submit the permit through DallasNow, and the City inspects the rough-in before walls close and again at final. The [quotes and warranties guide](https://fullboredallasrepiping.com/guide/repiping-quotes-and-warranties/) covers what a scope should name. ## Will you have to open walls? Yes, where the new lines drop to each fixture group: a small cut at the top of a wall and access behind the fixture where the stub-out lands. Your estimate lists the expected openings and who patches, textures and paints each one; the [wall openings guide](https://fullboredallasrepiping.com/guide/wall-openings-and-drywall-repair/) explains finish levels. The water stays on while we build the new system and goes off for each cutover, as the [water shutoffs guide](https://fullboredallasrepiping.com/guide/repiping-water-shutoffs/) describes. ## What polybutylene replacement costs When the whole house is PB, the new system is PEX or copper, so our whole-house ranges apply. Our typical range for a whole-house PEX repipe in Dallas is $4,500 to $15,000 and up, and for a whole-house copper repipe $8,500 to $18,000 and up. Two stories, more bathrooms, tile in the path of the new lines and a larger patch-and-paint scope push a house toward the top. When only part of the house is PB, we price it after the first visit from how much PB there is, the fixtures and branches, stories and attic route length, the new material, the openings, the water heater connections, valves and any PRV, and the permit. Your written estimate lists each one. The [repiping cost estimator](https://fullboredallasrepiping.com/tools/repiping-cost-estimator/) shows how the drivers change the scope, and the [Dallas repiping cost guide](https://fullboredallasrepiping.com/guide/repiping-cost-dallas/) explains how to compare quotes that describe the same work. ## Before you decide The [PEX versus copper guide](https://fullboredallasrepiping.com/guide/pex-vs-copper/) compares replacement materials, and the [repiping process and timeline guide](https://fullboredallasrepiping.com/guide/repiping-process-and-timeline/) shows the order of work. For the broad view, the [Dallas home repiping guide](https://fullboredallasrepiping.com/guide/dallas-home-repiping-guide/) covers the whole decision. Talk to us about your house Call (469) 846-9377 Standards this work follows - 2021 International Plumbing Code with City of Dallas amendments - ASTM F876/F877 for replacement PEX, or ASTM B88 for copper - NSF/ANSI 61 and 372 for new pipe, fittings and valves - Manufacturer instructions for the replacement tubing and fittings - Listed transition fittings wherever new pipe meets any retained line - DallasNow permit, rough-in inspection with walls open, then final ## What's included - Identification of the existing plastic by markings, fittings and stiffness before any scope is set - Replacement of PB distribution lines and every PB crimp fitting inside the agreed boundary - New stub-outs, stop valves and escutcheons where PB lines met fixtures - Water heater connections and any PB-to-other-material transitions replaced - Pressure test and flush before walls close, then the City rough and final inspections - A written note of any PB left in place, capped and disconnected, and where ## Telling gray and white plastic supply pipes apart | | Polybutylene (PB) | PEX | CPVC | | --- | --- | --- | --- | | Feel | Flexible, slightly waxy; holds a curve | Flexible | Rigid; snaps rather than bends | | Common colors | Gray most often | Red, blue, white, sometimes gray | Cream, tan or off-white | | Printed marking | Codes such as PB2110 | PEX, with ASTM F876 or F877 | CPVC, with ASTM D2846 | | Joints | Crimp rings, often over plastic or copper insert fittings | Expansion rings or crimp/clamp rings over listed fittings | Solvent-cemented sockets | | What it means for scope | Replace the PB lines and all PB fittings | Usually no material-driven replacement | Depends on age, heat exposure and brittleness | ## Related resources - Learn [How to identify water pipe material in a Dallas house](https://fullboredallasrepiping.com/guide/identify-water-pipe-material/)A magnet, a flashlight and the printing on the pipe tell you more than color does. Here is where to look in your Dallas house and what each material looks like. - Decision Guide [Should you repair or repipe a house with leaking pipes?](https://fullboredallasrepiping.com/guide/repair-or-repipe/)One leak is a repair. A pattern of leaks on the same pipe is a decision. Here's how to tell which one your Dallas house has, and what sits between the two. - Decision Guide [How to compare repiping quotes and warranties line by line](https://fullboredallasrepiping.com/guide/repiping-quotes-and-warranties/)Two repipe quotes for the same house can describe two different jobs. Lay them side by side on the same lines, then read the warranty terms for what they cover, who stands behind them and what voids them. - Decision Guide [PEX vs copper pipes: which suits a Dallas repipe?](https://fullboredallasrepiping.com/guide/pex-vs-copper/)Both are allowed under Dallas's plumbing code, and neither wins in every house. Your route, your attic, your fixtures and what you care about most decide which fits. - Learn [How long does repiping take in a Dallas home?](https://fullboredallasrepiping.com/guide/repiping-process-and-timeline/)Your schedule depends on your house. A repipe runs in stages, and the piping itself is only one of them. Here's the order, where the City inspections fall, and what makes each stage longer or shorter. ## How a Dallas repipe usually runs 1. First visit We count 14 fixture connections, trace the copper from the main shutoff in the garage, find the original lines running under the slab, check static pressure and the PRV, and look in the attic for headroom, insulation depth and a clear path from the garage to both bathrooms. 2. Written estimate Your estimate names PEX-A with expansion fittings, a home-run manifold beside the garage water heater, new quarter-turn stops, the old under-slab copper capped and left in place, the number and location of wall openings, and whether patch, texture and paint are included. 3. Permit Rearranging supply pipe is outside Dallas's limited exemption for stopping a leak, so the repipe is filed as permitted work through DallasNow before any pipe is cut. We keep the permit record with your estimate so you have both for your files. 4. Protection and openings Floors along the work path are covered, furniture is moved back from the wet walls, and small openings are cut behind the toilets, at each shower valve, under the sinks, at the washer box and at the kitchen sink wall. ## What this work looks like A gray polybutylene line with a plastic insert fitting and aluminum crimp band at a toilet supply stub-out New PEX lines dropping through an attic top plate beside a cut and capped length of old gray polybutylene Not sure if your gray pipe is polybutylene? We read the printing, check the fittings and tell you what the pipe is before we price any replacement. Call (469) 846-9377 ## Polybutylene replacement questions ### How do I tell polybutylene from gray PEX in a Dallas house? Read the printing. Polybutylene is usually marked with a code such as PB2110, while PEX says PEX with an ASTM F876 or F877 listing. Then look at the joints: PB uses crimp rings over insert fittings, often gray or white plastic or copper. Color alone misleads, because some PEX is gray and some PB is not. ### Which Dallas neighborhoods are likely to have polybutylene? There is no map of it. PB went into many U.S. homes built from roughly the late 1970s into the mid-1990s, so the age of the house is a clue, not proof. In ZIP 75248 the median home was built in 1980, by Census estimates. Any house of that era could have PB, copper or both, so we look before assuming. ### Is it only the polybutylene fittings that fail? The fittings get most of the blame, especially plastic insert fittings and badly crimped rings, but the pipe itself can also crack and weaken from the inside. Replacing fittings alone leaves aging pipe in service. When we replace polybutylene, we replace the PB lines along with their fittings, not just the joints that have already leaked. ### Will replacing polybutylene in my Dallas home satisfy my insurance company? Nobody can promise that; insurers make their own coverage, renewal and premium decisions. What we can give you is a written scope showing which PB lines were replaced and what went in, plus the City's final inspection. Ask your insurer what paperwork it wants before work starts, and we will make sure the closeout covers it. ### Can polybutylene stay in the slab while new lines run through a Dallas attic? Yes, as long as it is fully disconnected. We usually run the new lines overhead and cap the old PB runs where they leave the slab, so no water stays in them. Your written scope names which PB lines were left in place and confirms none still connect to the live system, which matters when the house is sold or inspected. ## Related services Whole-house repiping We replace every hot and cold supply line from the main shutoff to each fixture, usually rerouted through the attic on slab houses, then tested and inspected before the walls close. PEX repiping We repipe with one listed PEX tubing and fitting system, laid out as trunk-and-branch or a home-run manifold and routed to handle Dallas attic heat and winter freezes. Partial repiping We replace a named part of your hot and cold supply piping and leave the rest in service, with your estimate saying exactly where new pipe meets old and what stays.