Using the right pipe for a plumbing job is essential. Different systems have different demands, and not every pipe is built to handle them. Whether it’s high pressure, chemical exposure, underground installation, or heating applications, each situation needs the right combination of pipe, fittings, and connectors.
At Chatham Plumbing, serving Chatham, Sarnia, and Leamington, we’ve seen the damage caused by using the wrong materials—leaks, corrosion, bursts, and costly repairs. The best way to prevent those problems? Start by choosing the right pipe for the job.
Why Choosing the Right Pipe Matters
Every plumbing system has its own set of demands. These could include:
- Water temperature (hot or cold)
- Water pressure
- Chemical exposure (like chlorine, salt, or acid)
- UV exposure (especially for outdoor pipes)
- Fire safety requirements
- Installation location (above ground, underground, inside walls)
Each of these factors plays a critical role in pipe selection. The wrong choice can lead to pipe degradation, leaks, and even system failure.
Let’s break down how to choose the right pipe for the job and what factors you need to keep in mind.
1. Understand the Application First
Start by answering these key questions:
- What’s flowing through the pipe? (Freshwater, sewage, chemicals?)
- Will it be indoors or outdoors?
- Is it a pressurized system?
- Will it handle hot or cold water?
- Is the pipe going to be buried?
- Will it be exposed to sunlight?
- Are there fire safety codes to meet?
Your answers will determine what kind of material, pressure rating, and fittings you’ll need.
2. Know Your Pipe Options
Here are some common plumbing pipes and their ideal applications:
PVC (Polyvinyl Chloride)
- Great for: Cold water lines, drainage systems
- Avoid for: Hot water, for use up to 140 F. (it warps under heat)
- Pros: Affordable, corrosion-resistant, easy to cut and glue
- Cons: Brittle in cold temperatures, sensitive to UV
Note: Only use solvent cement and primers approved for PVC. Mixing PVC with other plastics (like ABS) using the wrong glue can lead to failures.
CPVC (Chlorinated Polyvinyl Chloride)
- Great for: Hot and cold water supply lines
- Better heat tolerance than PVC
- Ideal for residential water systems
CPVC must be joined with CPVC-specific solvent cement—never use PVC glue.
PEX (Cross-linked Polyethylene)
- Flexible and freeze-resistant
- Great for: Indoor hot and cold water
- Not recommended for: Outdoor or UV-exposed use
- Installed with: Crimp or clamp fittings—not glued
PEX is ideal for retrofits and tight spaces, but it needs a UV-protected environment and should be kept away from areas with potential chemical exposure.
Copper
- Time-tested, reliable, fire-resistant
- Excellent for: Pressurized systems, hot/cold potable water
- Expensive, but durable
- Two types: Type L (thicker, better for underground), Type M (thinner, indoor use)
Copper requires soldering and compatible brass or copper fittings. Never connect it directly to a galvanized pipe without a dielectric fitting—you’ll create a chemical reaction that leads to corrosion.
ABS (Acrylonitrile Butadiene Styrene)
- Common in drain, waste, and vent (DWV) systems
- Lighter and easier to install than PVC
- More impact-resistant, especially in cold weather
- Not accepted in all regions—check local code
Only use ABS-specific cement, and don’t mix it with PVC unless using a special transition fitting and adhesive approved for both materials.
Galvanized Steel
- Mostly outdated, but still found in older homes
- Susceptible to rust and corrosion over time
- Not recommended for new water supply systems
3. Don’t Mix and Match
Mixing different types of pipe or fittings without the correct transition methods can lead to major issues.
Examples of what can go wrong:
- Chemical Reactions: PVC and ABS use different adhesives. Using the wrong one can weaken the joint.
- Corrosion: Connecting copper and steel without a dielectric union can cause galvanic corrosion.
- Leaky Joints: Fittings that don’t match pipe type and size won’t seal properly.
- Code Violations: Using non-compliant materials can cause insurance or inspection problems.
Bottom line: Every pipe has a preferred set of fittings and solvents. Don’t take shortcuts.
4. Consider Environmental and Chemical Factors
The water or substance travelling through your pipes matters.
- Chlorine in municipal water can degrade some plastics over time.
- Salt in water softeners or marine environments can speed up metal corrosion.
- Acidic waste from commercial kitchens or labs may require specialized piping like polypropylene or stainless steel.
Also, if your system is exposed to:
- Sunlight (UV rays), choose UV-resistant piping like painted copper or specially-rated PEX.
- Fire code requirements: use CPVC that’s fire-rated or metal piping with fireproof insulation.
5. Pressure and Temperature Ratings Matter
Every pipe has a max pressure and temperature rating. Pushing those limits shortens the lifespan and raises the risk of failure.
- PEX and CPVC: Check if they’re rated for continuous hot water use.
- PVC: Use only for cold water ( less than 140 F), and check pressure limits, especially for long runs or high-rise buildings.
- Copper: Can handle higher pressure and temperature, but costs more and is harder to work with.
Always match pipe ratings to the system they’ll be used in. Don’t assume “close enough” is good enough.
6. Get the Right Fittings and Tools
Pipe isn’t a standalone product. It needs the right components to function:
- Fittings: Elbows, tees, and reducers must match pipe type and diameter.
- Solvents: Only use certified cements for your pipe material (PVC, CPVC, ABS, all need specific products).
- Support Systems: Pipes need brackets and supports at correct intervals, especially for vertical or overhead runs.
- Adapters: For transitioning from one material to another, use approved transition fittings.
Never try to “make it work” with mismatched pieces. It won’t.
The Chatham Plumbing Difference
Whether you’re a professional contractor or a DIY homeowner, getting the right pipe and materials for your plumbing project is critical. At Chatham Plumbing, we specialize in supplying exactly what you need, backed by expert knowledge and honest advice.
Serving Chatham, Sarnia, and Leamington, we stock a full range of piping materials—PVC, CPVC, PEX, copper, ABS, and more—along with all the compatible fittings, solvents, transition pieces, and tools. Our staff knows which products work together and which combinations to avoid. We’re here to help you make informed decisions that save time, money, and headaches.
Final Word
Choosing the right pipe isn’t just about size or cost—it’s about matching the material to the job. Pressure, temperature, UV exposure, buried conditions, chemicals, and even fire codes all affect what pipe you should use. And pairing it with the wrong fittings or adhesives can lead to serious system failures.
At Chatham Plumbing, we help you get it right. Visit one of our locations in Chatham, Sarnia, or Leamington and talk to a knowledgeable team member. Whether you’re picking up parts for a quick repair or planning a full build, we’ll make sure you leave with the right materials for the job.
Frequently Asked Questions (FAQs)
1. How do I know which pipe material I need for my project?
It depends on several factors—water temperature, pressure, exposure to sunlight or chemicals, whether the pipe is buried, and local building codes. If you’re unsure, bring the project details to Chatham Plumbing. Our team will help you choose the right pipe and compatible fittings.
2. Can I mix different types of pipe together?
Not without the correct transition fittings and adhesives. Mixing incompatible materials (like PVC and ABS, or copper and galvanized steel) can cause chemical reactions, leaks, or corrosion. We carry the proper adapters to safely join different pipe types when necessary.
3. What’s the difference between PVC and CPVC?
PVC is used for cold water and drainage. CPVC is chemically treated to handle higher temperatures and is suitable for hot water lines. They are not interchangeable, and each requires specific solvent cements.
4. What type of pipe should I use for underground applications?
You’ll need a pipe that’s rated for burial and resistant to corrosion and pressure—typically PVC (Schedule 40 or 80) or PEX with proper insulation. Avoid using materials that are UV-sensitive or not pressure-rated.
5. Are all pipe fittings universal?
No. Fittings are specific to pipe material and size. For example, a PEX fitting won’t work with PVC, and solvent cements only work with their intended material. Always match fittings and adhesives to your pipe type.
6. What pipe is best for hot water?
CPVC, PEX, or copper are good choices for hot water systems. PVC should never be used for hot water—it can warp or fail under heat.
7. Can I use PEX pipe outdoors?
PEX is not UV-resistant and will degrade if exposed to sunlight over time. For outdoor use, choose a pipe that’s specifically rated for UV exposure or protect the PEX with a UV barrier or insulation.
8. What tools do I need to install different types of pipe?
It depends on the material:
- PVC/CPVC/ABS: Saw or pipe cutter, primer, solvent cement
- PEX: Crimp or clamp tool, pipe cutter, proper fittings
- Copper: Pipe cutter, flux, torch, solder
We stock all the tools and accessories you’ll need at Chatham Plumbing.