A Worker Carefully Spreads Gravel Over Radiant Heating Pipes During Floor Installation Work

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Издатель Oct 13, 2025

"Heat, stone, and precision, the quiet choreography beneath every warm floor."

This video captures a worker carefully spreading gravel over radiant heating pipes during a floor installation project—a crucial step that balances protection, insulation, and heat distribution. Every shovel of gravel is measured, every motion deliberate, ensuring that the warmth flowing beneath future tiles or concrete spreads evenly and efficiently.

The Process:

1. Site Preparation:

The subfloor is cleaned and leveled to create a stable base.

Radiant heating pipes—usually PEX tubing—are laid out in precise serpentine or spiral patterns following heat zone designs.

Each pipe is pressure-tested for leaks before the covering process begins.

2. Gravel Layering:

The worker uses fine, clean gravel (5–10 mm grain size) to form a protective bedding layer.

Starting from one edge, gravel is spread gently using a shovel and rake, ensuring even coverage without displacing the pipes.

The worker maintains a consistent thickness of 3–5 cm above the heating lines—enough to secure the pipes but not restrict heat flow.

A hand tamper or vibrating plate is used lightly to compact the gravel and eliminate air gaps.

3. Leveling & Surface Preparation:

A straightedge tool or laser level ensures the gravel surface is flat, preventing uneven heat distribution in the final floor.

Workers inspect to confirm all pipes remain intact and properly aligned after spreading.

The surface is now ready for concrete screed or slab pouring, which will embed the heating system permanently.

Why This Works:

✔ Thermal Balance: Gravel conducts and diffuses heat evenly, reducing hot or cold spots.
✔ Pipe Protection: Prevents mechanical damage during concrete pouring or surface compaction.
✔ Drainage & Stability: Gravel helps moisture escape, minimizing future cracking or shifting.

Key Tips:

⚠ Avoid Sharp Aggregates: Use rounded gravel—sharp stones can puncture heating pipes.
⚠ Check Pipe Pressure: Keep the heating system slightly pressurized during covering to detect accidental leaks immediately.
⚠ Level Accuracy: Even minor unevenness can affect floor thickness and heat performance.

Final Thought:

Beneath the polished floors we walk on lies an unseen layer of care and calculation—where gravel, heat, and human precision come together to craft comfort from the ground up.