How is PEX laid for New Brunswick in-floor heat?

PEX tubing for in-floor radiant heat is a plumbing and mechanical trade question, not a concrete topic — so it falls outside what I can help with directly.

That said, there is a concrete component to radiant in-floor systems that I can speak to: the concrete slab that encases the PEX tubing is a specialized pour with specific requirements, and in New Brunswick's climate, getting that slab right is critical to the system performing properly for decades.

If your question is really about the concrete side of a radiant floor system — slab thickness, mix design, curing over tubing, control joints, or timing the pour around the PEX installation — I am happy to go deep on any of those topics.

For the PEX layout, spacing, manifold design, boiler sizing, and mechanical installation, you will want a licensed plumber or mechanical contractor with radiant heat experience. You can find heating and plumbing contractors through the New Brunswick Construction Network at newbrunswickconstructionnetwork.com — they cover the full range of residential construction trades across NB.

If you want, tell me more about your project — slab on grade, basement floor, or above-grade system — and I can cover everything on the concrete side of the installation.