When it comes to choosing the best underfloor heating pipe, there are a few factors to consider, including the type of underfloor heating system you’re installing (electric or water-based), your budget, and your specific project requirements. For water-based (hydronic) underfloor heating systems, the most common types of pipes used are PEX (cross-linked polyethylene) and PERT (polyethylene raised temperature) pipes. Here’s a comparison of these two pipe types:
PEX (Cross-Linked Polyethylene) Pipe:
Pros:
- Proven Performance: PEX pipes have been used in underfloor heating systems for many years and have a proven track record of reliability.
- Flexibility: PEX pipes are flexible and can be easily bent around obstacles, making installation more straightforward.
- Heat Conductivity: PEX pipes have good heat conductivity, allowing them to distribute heat evenly across the floor.
- Longevity: PEX pipes are generally durable and resistant to corrosion, which contributes to their long lifespan.
Cons:
- Oxygen Permeability: PEX pipes can be sensitive to oxygen permeation, which might lead to long-term degradation if not addressed with proper barrier materials.
- Price: PEX pipes can be more expensive than some other pipe materials.
PERT (Polyethylene Raised Temperature) Pipe:
Pros:
- Heat Resistance: PERT pipes are designed to withstand higher temperatures than standard PE pipes, making them suitable for underfloor heating applications.
- Flexibility: Like PEX pipes, PERT pipes are also flexible and can be easily maneuvered during installation.
- Oxygen Barrier Options: PERT pipes are available with oxygen barrier layers to prevent oxygen diffusion into the system, which helps protect the integrity of the system components.
Cons:
- Limited History: PERT pipes are a relatively newer option compared to PEX pipes, so they might not have as long of a track record in underfloor heating applications.
- Cost: PERT pipes can also be more expensive compared to other pipe options.
When selecting the best underfloor heating pipe for your project, it’s essential to consider the overall quality of the pipe, its compatibility with the rest of the system components (such as the manifold), the specific temperature requirements of your system, and your budget constraints. Consulting with professionals who have experience in underfloor heating installations can provide valuable insights and help you make an informed decision based on your unique needs.