Radiant Floor Heating Design & Installation

Radiant in-floor heating designed around a proper heat-loss calculation and installed for homes, cottages, additions and bathrooms across Muskoka, Orillia and Oro-Medonte.

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Ultimate Comfort Underfoot

Imagine stepping out of bed or the shower onto a comfortably warm floor, even in the depths of a Muskoka winter. Radiant in-floor heating transforms cold tile and stone floors into sources of luxurious warmth, while providing efficient, even heat distribution throughout your space.

W.C. Plumbing Services installs both electric and hydronic radiant floor heating systems for bathrooms, kitchens, basements, and entire homes. Whether you're building new or renovating, we design and install systems that deliver comfort and efficiency for years to come.

Our Services Include:

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    Electric Radiant Systems: Low-profile heating mats ideal for bathrooms and small spaces
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    Hydronic Radiant Systems: Water-based systems for whole-home heating
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    System Design: Custom layouts optimized for your space and heating needs
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    Thermostat Installation: Programmable controls for comfort and efficiency
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    Integration with Renovations: Coordinate with tile, flooring, and other trades
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    Repair & Troubleshooting: Service existing radiant heat systems

Radiant Heating Design & Heat-Loss Calculations

A radiant system is only as good as its design. Every system we install starts with a room-by-room heat-loss calculation — accounting for insulation, windows, ceiling heights, floor coverings and Muskoka's design temperatures — so each space gets exactly the heat it needs.

From there we design the tubing layout and spacing, loop lengths, manifolds and zoning, choose the right supply water temperature, and size the boiler or combination water heater to match. The result is a system that heats evenly, runs efficiently and doesn't short-cycle.

1. Heat-Loss Calculation

Room-by-room load calculation for your home, addition, basement or cottage.

2. System Design

Tube spacing, loop layout, manifold locations, zoning and controls.

3. Boiler & Equipment Sizing

High-efficiency boiler or combi unit sized to the real load — not a guess.

4. Installation & Commissioning

Installed, pressure-tested, balanced and set up so every zone heats properly.

We design and install radiant heating across Muskoka — Huntsville, Bracebridge, Gravenhurst and the surrounding lakes — and in Orillia, Oro-Medonte, Severn, Ramara and the Parry Sound area.

Benefits of Radiant Floor Heating

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Superior Comfort

Gentle, even warmth from the floor up eliminates cold spots and provides comfort throughout the entire room.

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Energy Efficiency

Radiant heat operates at lower temperatures than forced air, reducing energy costs by 10-30%.

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Silent Operation

No noisy fans or blowers - just quiet, consistent warmth without any sound.

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Improved Air Quality

No air circulation means less dust, allergens, and dry air compared to forced-air systems.

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Design Freedom

No radiators or vents to work around - heating is invisible, maximizing your design options.

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Perfect for Tile & Stone

Transforms naturally cold materials like tile, marble, and stone into comfortable surfaces.

Electric vs. Hydronic Systems

Choose the system that best fits your project

⚡ Electric Radiant Heat

Thin heating mats or cables installed beneath tile or stone flooring. Ideal for bathrooms, kitchens, and smaller spaces.

Best For:

  • • Bathroom floors (most popular)
  • • Kitchen floors
  • • Entryways and mudrooms
  • • Single room additions
  • • Renovation projects

Advantages:

  • • Lower installation cost
  • • Easier to install in renovations
  • • No boiler required
  • • Fast heat-up time

💧 Hydronic Radiant Heat

Network of tubing carrying heated water beneath floors. More complex but highly efficient for larger areas and whole-home heating.

Best For:

  • • Whole-home heating
  • • Large open spaces
  • • New construction
  • • Basements and workshops
  • • Garages and studios

Advantages:

  • • Lower operating costs
  • • More even heat distribution
  • • Can be primary heat source
  • • Works with various energy sources

Hydronic Radiant Floor Heating: How the System Works

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Heat Source (Boiler)

Boiler heats water to desired temperature. Can be dedicated radiant boiler or combination system (space heating + domestic hot water).

Boiler options:

  • • Natural gas or propane boilers
  • • Electric boilers
  • • Oil-fired boilers (less common)
  • • Combination systems with domestic hot water
  • • High-efficiency condensing boilers recommended (boiler installation & repair)
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PEX Tubing

Flexible cross-linked polyethylene tubing (typically 1/2" or 5/8" diameter) installed in serpentine patterns beneath flooring. Tubing carries heated water throughout the floor.

PEX specifications:

  • • Oxygen-barrier PEX required (prevents corrosion)
  • • Spacing: 6-12" on center typical
  • • No joints or connections under floor
  • • 50+ year lifespan
  • • Resistant to corrosion and scale
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Manifold System

Distribution manifold splits heated water into individual zone circuits. Each zone can be controlled independently with flow meters and valves.

Features:

  • • Individual zone valves
  • • Flow meters for balancing
  • • Air vents and drain valves
  • • Temperature gauges
  • • Typically mounted in mechanical room
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Circulation Pump

Circulator pumps move heated water through the tubing loops. Variable speed pumps adjust to demand for maximum efficiency.

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Thermostats & Controls

Individual thermostats for each zone. Can be programmable, Wi-Fi enabled, or smart home integrated. Controls communicate with zone valves and boiler.

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Mixing Valve & Controls

Mixes hot water from boiler with return water to achieve desired floor temperature. Radiant heat requires lower temperatures (35-45°C) than radiators. Mixing ensures optimal efficiency.

Installation Methods

Different applications require different installation approaches

In-Slab Installation (Most Common)

PEX tubing embedded directly in concrete slab during pour. Best for new construction or when pouring new floors.

Process:

  • 1. Install insulation under slab
  • 2. Lay rebar or wire mesh
  • 3. Install PEX tubing in pattern
  • 4. Pressure test tubing
  • 5. Pour concrete with tubing filled
  • 6. Cure 21-28 days before heating

Advantages:

  • ✓ Excellent thermal mass
  • ✓ Most efficient operation
  • ✓ Lowest profile (no floor buildup)
  • ✓ Works with any floor finish
  • ✓ Ideal for new construction

Above-Slab with Sleeper System

PEX tubing installed above existing slab between sleeper strips, then topped with plywood subfloor and finish flooring. Good for retrofits.

Best for:

  • • Existing concrete slabs
  • • Renovations
  • • When slab pour not possible
  • • Wood or laminate finish floors

Considerations:

  • • Raises floor 1.5-3"
  • • May need door adjustments
  • • Slightly less efficient than in-slab
  • • Requires insulation underneath

Staple-Up (Under Subfloor)

Tubing stapled to underside of wood subfloor from below (basement or crawl space). Heat radiates up through floor.

Best for:

  • • Existing homes with access below
  • • Retrofit installations
  • • Wood subfloor over basement
  • • When floor height can't increase

Requirements:

  • • Must have access from below
  • • Reflective insulation essential
  • • Heat transfer plates recommended
  • • Less efficient than in-slab

Basement Floor Heating Options

Turn a cold concrete basement into warm living space. Insulation under the tubing is essential, and the right method depends on whether the slab is new or existing and how much ceiling height you have.

Option 1: In New Concrete Slab (Best)

If pouring new basement floor or have exposed earth, this is ideal. PEX tubing embedded in concrete provides maximum thermal mass and efficiency.

Process:

  • • Install vapor barrier
  • • Lay rigid foam insulation (R-10 minimum)
  • • Install PEX tubing on clips or mesh
  • • Pressure test tubing
  • • Pour 4" concrete slab
  • • Cure then apply floor finish

Advantages:

  • ✓ Most efficient operation
  • ✓ Excellent thermal mass
  • ✓ Lowest floor profile
  • ✓ Best long-term performance
  • ✓ Works with any floor finish

Option 2: Above Existing Slab

For existing concrete floors, install insulation, tubing, and thin concrete topping OR plywood subfloor system.

Topping Method:

  • • 1" foam insulation over existing slab
  • • PEX tubing installed on insulation
  • • 1.5-2" lightweight concrete topping
  • • Total floor raise: 2.5-3"
  • • Can finish with tile, LVP, etc.

Sleeper Method:

  • • Foam insulation on existing slab
  • • Sleeper strips with tubing between
  • • Plywood subfloor over top
  • • Total floor raise: 2-3"
  • • Better for wood/laminate finishes

Both methods work well. Choice depends on desired floor finish and ceiling height constraints.

Option 3: Electric Radiant (Alternative)

For smaller basement areas or specific rooms, electric radiant mats are simpler alternative.

Pros and Cons:

  • ✓ Lower installation cost
  • ✓ Simpler installation
  • ✓ No boiler required
  • ✗ Higher operating costs
  • ✗ Not ideal for primary heat source

Radiant Heating Design from Barrie to Huntsville

We design and install radiant floor heating across Simcoe County and Muskoka: Barrie, Orillia, Oro-Medonte, Horseshoe Valley, Severn, Washago, Gravenhurst, Bracebridge, Port Sydney and Huntsville. Heat-loss calculations, boiler sizing and the tubing layout are done in-house, then installed by the same team.

Popular Applications

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Bathrooms

The #1 application. Warm tile floors transform your morning routine and add luxury to your space.

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Kitchens

Comfort where you spend hours standing, plus protection against spills and moisture.

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Basements

Turn cold concrete floors into comfortable living spaces with even, efficient heating.

Radiant Floor Heating FAQs

Find answers to common questions about our plumbing services

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Ready for Warm Floors?

Get a free consultation and quote for radiant floor heating design and installation. Serving Muskoka, Orillia and area.

Radiant Floor Heating Design & Installation Across Muskoka, Parry Sound & Orillia

Based in Utterson and serving homes and cottages throughout the region.