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Warmup Insulation Board Installation Video

1 min read · Updated Dec 2025

Ultralight boards are typically installed over concrete slabs with thinset. While they can be installed over ¾” plywood, it is mostly beneficial over cold/unheated subfloors (basement slab, drafty crawlspace, room above the unheated garage).

Ultralight is installed “red-side-up” and is typically covered with our StickyMat or DCM Pro heating systems. Those can then be tiled over right away. You can also apply other floor coverings by first applying a 3/8” layer of leveler.

Warmup Insulation Board Installation Video:

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