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Laying of thin insulation (Dépron)

While the effectiveness of thin reflective insulators (IMRs) is strongly questioned, this is not the case with Depron, a thin insulator made from extruded polystyrene foam, with closed cells and a fine texture. It is particularly interesting to avoid the phenomenon of the "cold wall" and to prevent the risks of condensation. It is presented in plates, under two thicknesses: 3 and 6 mm. It is in fact a complete system, with specifically adapted glues, primer coating and even coating for joint.

Necessary material

  • Notched spatula
  • Rule of upholsterer
  • Plumb-line
  • Metre
  • Spatula to be rubbed
  • Brush to be rubbed
  • Cutter
  • Stool

Steps

  1. Lay the Depron insulation on the wall
  2. Characteristics of Depron Insulation

Lay the Depron insulation on the wall

Glue

Glue

1. On a dry, healthy and dust-free wall, spread the specific "insulating glue" with a notched trowel at a rate of 250 g / m2. If the wall has some irregularities, small holes or light cracks, it is not necessary to reseal, coat or sand to make it perfectly smooth. On the other hand, if you plan to put on the insulation a heavy coating, like tiling, use for its installation, the glue "Dépron plus", specifically adapted to allow a hanging able to withstand the weight of a tile later wall mounted (up to 3 kg / m2).

Insulating coating

Insulating coating

2. Place the insulation on the bonded wall by applying the green label side to the substrate. Its positioning (vertical or horizontal) can be a function of both the coating it will support that the configuration of places.

Marouflage the insulation

Marouflage the insulation

3. After making sure the lé is in good position, and particularly the quality of the joint formed with the previous lé, carefully marouflage the insulation with a large plastic spatula, designed especially for this purpose (especially recommended for insulation strips) in 6 mm thick).

Overlay of the strips

Overlay of the strips

4. If your seal does not seem perfectly realized, the "special joint" tube coating will allow you to obtain a satisfactory result. With the 3 mm Depron, if you are used to laying coatings, use the "quick joint" method by superimposing the edges of two adjacent strips. Using a ruler and a cutter, make a straight cut on the layering and remove the falls. Marouflage the two edges that are found to "live joint". The seal will be impeccable.

Characteristics of Depron Insulation

Brush to be rubbed

Brush to be rubbed

When the insulation is used in its thinnest form (thickness 3 mm), it can be stuck with a good classic scrubbing brush like the one used for wallpaper.

Depron thin insulation

Depron thin insulation

The Dépron is presented in plates of 2.50 m x 0.80 m but folded in two for a greater ease of handling and setting up. It is classified M1 on incombustible support. Its thermal conductivity coefficient is 0.028, its thermal resistance R at 0.17 (in 6 mm). It can be painted (vinyl or acrylic paint only), upholstered (use the primer) or tiled (only if it has been glued with "Dépron plus" glue).

(photos / visuals: © Quelyd, except special mention)

Laying of thin insulation (Dépron): Depron

On the same topic

  • Questions answers
    • Should I paint Depron before lining?
    • Thin insulation and traditional insulation are they reconcilable?
    • How to paint on Depron?
    • Can thin insulation be added to existing insulation?
    • How to achieve efficient insulation with limited thickness?
    • Should we remove or leave in place a thin insulation?
    • How to treat finishes around Depron?
    • What are the strengths and limitations of Ycynene insulation?
  • News
    • HYBRIS, a new cellular insulation by ACTIS
  • DIY tips
    • Insulating doubling glued on regular walls
    • Wet walls: treatments

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