Understanding Deck Tile Build-Up
The 'build-up' of a deck tile system refers to the total height added to your existing surface. This isn't just the thickness of the tile itself; it includes any supporting elements beneath it. For instance, if you're installing 24 x 24 deck tiles, the total build-up will be the thickness of the tile plus the height of its base or support system.
Common deck tile options include 12 x 12 or 24 x 24 formats, available in species like Ipe, Garapa, and Cumaru. These tiles typically come with an integrated plastic or wood grid on the underside, which adds to their overall thickness. When planning, you must account for the full dimension from the existing substrate to the finished top surface of the deck tile.
Some installations may utilize a pedestal system, especially on rooftops or uneven surfaces, which can significantly increase the total build-up. Always refer to the exact product specifications for both the deck tile and any supporting components to determine their individual thicknesses.
Identifying Your Door Threshold Type
Before measuring, observe your door threshold. Is it flush with the interior floor, or does it rise significantly? Some doors have a low-profile saddle, while others feature a more pronounced raised sill. The type of door (e.g., hinged, sliding, bifold) and its swing direction (inward or outward) will also dictate how much clearance is necessary.
Measuring Critical Threshold Dimensions
1. **Bottom of Door to Existing Surface:** Measure the vertical distance from the very bottom edge of your door (when closed) down to the existing substrate where the deck tiles will be installed. If the door swings outward, you'll also need to consider the arc of its swing.
2. **Threshold Height:** Measure the vertical height of your existing door threshold or sill from the existing substrate. This measurement is crucial for determining how much of a step-up will remain after the deck tiles are installed.
For outward-swinging doors, open the door fully and measure the clearance at its lowest point as it sweeps across the proposed deck tile area. Any part of the door, including its weatherstripping or sweep, must clear the finished deck tile surface.
Worked Example: Calculating Deck Tile Clearance
Let's assume you're planning to install 24 x 24 Ipe deck tiles on an existing concrete patio outside a hinged, outward-swinging door.
**Assumptions:**
* Existing concrete patio is level.
* The Ipe deck tile (24 x 24) has a total thickness of 1.5 inches (including its integrated base).
* Measurement from the bottom of the door to the concrete patio is 1.75 inches.
* The existing door threshold rises 0.5 inches above the concrete patio.
**Calculations:**
1. **Deck Tile Build-Up:** 1.5 inches.
This might be sufficient for a door that swings cleanly.
3. **Finished Step-Up at Threshold:** The top of the deck tile will be 1.5 inches above the concrete. The top of the existing threshold is 0.5 inches above the concrete. Therefore, the deck tile surface will be 1.5 inches - 0.5 inches = 1.0 inch higher than the existing threshold.
* This creates a 1-inch step *down* from the deck tile surface to the top of the existing threshold when entering the house. This transition should be considered for accessibility and tripping hazard potential.
**Outcome:** In this hypothetical scenario, the door clears the deck tiles, but there is a 1-inch step down to the threshold. Your design team should review local accessibility requirements to confirm if this step-down is acceptable for your project's intended use.
Considering the Arc of Door Swing
For doors that swing outward, it's not just the static clearance that matters, but also the dynamic clearance as the door moves. The lowest point of the door may be at its edge or along its sweep. Use a straightedge and a level to simulate the door's path if necessary, especially if the door sweep extends below the main door panel. Ensure that no part of the door or its hardware will drag or catch on the finished deck tile surface.
If the door opens inward, the primary concern is the clearance between the interior floor and the top of the threshold after the deck tiles are installed. The deck tile height will define the exterior landing, and the threshold will bridge the gap to the interior floor.
Material Choices and Their Impact
The choice of deck tile material and size can influence the overall build-up. Ipe, Garapa, and Cumaru deck tiles are robust options. While the wood species primarily affects appearance and durability, the specific construction of the tile's base (e.g., a thicker plastic grid) is what contributes to its total installed height. Always check the exact product specifications for the total thickness of the deck tile module you plan to use.
Lumber Plus offers a range of deck tiles, including Ipe deck tiles, Garapa deck tiles, and Cumaru deck tiles, in common sizes like 12 x 12 and 24 x 24. Reviewing the detailed specifications for each product will provide the precise dimensions needed for your calculations.
Before you order
- Measure the total thickness of your chosen deck tile module (including its base).
- Measure the vertical distance from the bottom of your door to the existing substrate.
- Measure the height of your existing door threshold from the existing substrate.
- Consider the direction of door swing (inward/outward) and potential arc interference.
- Calculate the remaining clearance between the door and the finished deck tile surface.
- Determine the step-up or step-down at the threshold after deck tile installation.
- Consult local accessibility guidelines for acceptable threshold transitions.
- If using a pedestal system, include the full height of the pedestals in your build-up calculation.
Confirm installation details, approved uses and warranty terms in the current instructions for the exact product and profile. Your installer should verify the substrate, structure and applicable project requirements.
Questions to help you decide
What if my door doesn't clear the deck tiles?
If your measurements show that the door will not clear the deck tiles, you have a few options. You might consider a thinner deck tile system if available, or a different installation method that reduces the overall build-up. In some cases, adjusting the door's height or trimming the bottom of the door may be possible, but this should be evaluated by a professional. Another option is to create a transition zone or a step-down area immediately in front of the door, where deck tiles are either omitted or installed at a lower height.
How much clearance is generally recommended for doors?
However, always verify with your specific door manufacturer's guidelines and any applicable accessibility standards, especially for public or commercial spaces.
Can deck tiles be installed directly against the door threshold?
Deck tiles can be installed up to the threshold, but it's important to leave a small expansion gap if recommended by the manufacturer, particularly for wood products. The primary concern is ensuring the door's full range of motion and avoiding any obstruction. The goal is a smooth transition that does not impede door operation or create a tripping hazard.
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