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Insulating lining made of plasterboard and expanded polystyrene (Panelplac Reno Ultra 32)

This Home Pratik dubbing complex is specially adapted to difficult access sites (thanks to its width of only 60 cm), while providing excellent thermal insulation thanks to its expanded polystyrene TH 32. The passage through the stairwell or by a window for the renovation of the rooms on the floor is thus facilitated. Transport and handling are also easier because of its width of 60 cm and its weight not exceeding 15 kg. Two poses are possible:
- glued with PM 1 adhesive mortar to the wall;
- screwed on rafters * on the ceiling.
* Concerning the ceiling installation on rafters, the flatness and the gap of the rafters must be in conformity with the detailed application hereafter.

Necessary material

  • Bubble level
  • Rule
  • Cales
  • Home Pratik PM adhesive mortar 1
  • Water
  • Auge
  • Trowel
  • trestles
  • Cutter
  • Screw, screwdriver
  • Arise plate
  • Knife to coat
  • Coated Knauf Uniflott
  • Sanding block

Steps

  1. The pose glued to the wall
  2. The pose screwed crawling under timber frame
  3. The coating

The pose glued to the wall

Arrange the mortar glue in blocks of 10 cm diameter on the insulation

Arrange the mortar glue in blocks of 10 cm diameter on the insulation

1. Locate on the floor and refer to the ceiling the thickness of the lining in relation to the wall + 1 cm. Put the complex to good dimension (height under ceiling - 1 cm). Place the backing plate on two trestles, polystyrene upwards and place the PM 1 adhesive mortar adhesive in blocks of 10 cm diameter on the insulation (3 studs on the width, one row every 30 cm).

Level the plate by crushing the glue pads with the 2 m ruler

Level the plate by crushing the glue pads with the 2 m ruler

2. Press the panel against the wall, then tap against the plate with a 2m ruler to crush the glue pads and set the level plate.

Place the foot of the panels on holds

Place the foot of the panels on holds

3. The panels are laid down, joined to the ceiling and stalled to the foot. The shims will be removed the next day after complete drying of the adhesive mortar. After removing the shims, apply expansive polyurethane foam to the bottom of the liner to ensure perfect insulation and air tightness.

Cut the excess foam to the cutter

Cut the excess foam to the cutter

4. Once the foam has hardened, cut off the excess foam at the bottom of the panel with a cutter. Wear heavy protective gloves.

The pose screwed crawling under timber frame

Check the flatness of the chevron

Check the flatness of the chevron

1. In the case of laying under ceilings under rafters made of rafters, make sure that the frame has a satisfactory flatness. The structure must not contain irregularities of level higher than 5 mm. To make sure, move a ruler 2 m perpendicular to the rafters.

Respect a distance of 60 cm between the support lines

Respect a distance of 60 cm between the support lines

2. A maximum spacing of 60 cm between the axes of the support lines must be respected in the case of a perpendicular laying.

Screw the doubling perpendicularly under the rafters

Screw the doubling perpendicularly under the rafters

3. Insulating insulation panels shall be screwed directly and perpendicular to the rafters.

Use a screw of the thickness of the complex + 2 cm

Use a screw of the thickness of the complex + 2 cm

4. Choose screws of complex thickness + 2 cm to attach in rafters.

Position the screws flush with the plate

Position the screws flush with the plate

5. When screwing, take care to position the screws flush with the plate for optimum mechanical strength and a better finish.

The coating

Sprinkle the plaster in cold water

Sprinkle the plaster in cold water

The rounded edges of the plate allow the use of the paperless joint technique by applying a special coating (Uniflott).
1. Sprinkle the coating in cold, clean water to the surface (max 2.5 kg in about 1.2 l of water).

Mix with a coating knife

Mix with a coating knife

2. Let stand for 2 to 3 minutes and mix without adding. Use the knife to coat until you get a creamy paste.

Scrape from bottom to top to spread the plaster

Scrape from bottom to top to spread the plaster

3. Apply the plaster with a knife, by a small touch, between the joints, perpendicular to the plates and this over the entire height. Remember to close the screw heads in the case of ceiling installation. Then scrape from bottom to top to spread the plaster. After about 50 minutes, remove the excess coating.

Make a second application

Make a second application

4. Make a second application with a wider plaster knife to obtain a perfectly smooth surface.

Sand lightly to finish the job

Sand lightly to finish the job

5. After completely drying the coating, sand lightly with a fine abrasive and a sanding block.

Realize joints in a classic way

Realize joints in a classic way

6. It is also possible to make the joints in a conventional way, with paper joint strip and traditional joint coating (PM 5).

(photos / visuals: © Knauf Insulation, except special mention)

Insulating lining made of plasterboard and expanded polystyrene (Panelplac Reno Ultra 32): lining

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