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Replace an old window with a PVC window

The replacement of old windows with insulating windows has become a priority in any renovation. PVC is particularly suitable for this operation. It is currently the material offering the best value for money. The removal of the frame (or dormant) is necessary here. Be sure to deposit it as cleanly as possible with minimal damage to the interior decoration.

Necessary material

  • Measuring and tracing kit (bubble level, scribe, felt)
  • Cutter
  • Screwdriver
  • Wood chisel
  • Nylon mallet
  • burin
  • Hammer
  • Spatula
  • Nail set
  • Cat tongue trowel
  • Universal pliers
  • Pliers
  • Putty gun
  • Angle grinder
  • Saber saw equipped with a wood blade
  • Hammer drill
  • screwdriver
  • Impregnated foam seal
  • Spacers
  • Joint bottom
  • Silicone "special outdoor"
  • Insulating
  • Cement
  • Mastic adhesive
  • Custom window and fixing kit
  • Finishing profiles

Steps

  1. Remove the old window frame
  2. Prepare the new window
  3. Make the window waterproof
  4. Realize interior finishes

Remove the old window frame

Trimming the old frame from the window to the cutter

Trimming the old frame from the window to the cutter

1. Trim the old window frame with a cutter so as not to damage the finish of the wall.

Remove the finishing moldings from the window

Remove the finishing moldings from the window

2. Remove the trim moldings with a wood chisel and mallet.

Cut out the biggest part of the frame with the saber saw

Cut out the biggest part of the frame with the saber saw

3. Once the moldings are removed, cut out the majority of the frame with the saber saw.

Remove some pieces with a wood chisel

Remove some pieces with a wood chisel

4. If, like here, the old frame is sealed in the masonry, some pieces can only be removed with the aid of the chisel and the mallet.

 Release the sealing tab

Release the sealing tab

5. Release the sealing tab, this will facilitate cutting on the grinder.

Remove the old cement seal

Remove the old cement seal

6. Remove old cement seal with hammer and chisel. Also remove anything that might interfere with the installation of the new window.

Prepare the new window

First fix the handle on the window

First fix the handle on the window

1. Start by attaching the handle.

Remove the first tilt-and-turn

Remove the first tilt-and-turn

2. Remove the first tilt and turn door. Remove the pin from the top hinge and open the window to tilt the sash and remove it.

Remove the following opening by unhinging it

Remove the following opening by unhinging it

3. Remove the following opening by unhinging it.

Mark the cutouts on the window sill

Mark the cutouts on the window sill

4. Center the frame on the masonry. Locate your cutouts on the window sill before cutting it.

Lay the frame on the masonry by adding 2 shims 5 mm thick

Lay the frame on the masonry by adding 2 shims 5 mm thick

5. Place the frame on the masonry by adding 2 shims 5 mm thick. This will make the space all the way around the window.

Check the level of the bottom rail of the window

Check the level of the bottom rail of the window

6. Check the level of the bottom rail, you can now locate the mounting holes at the scribe.

Drill and pinch the window fixing holes

Drill and pinch the window fixing holes

7. Remove the frame and drill with the appropriate drill bit before pegging.

To ensure a good support to the window frame, grind the masonry with mortar

To ensure a good support to the window frame, grind the masonry with mortar

8. To ensure good support for the new window frame, grind the masonry using mortar.

Apply foam seal to the masonry after drying

Apply foam seal to the masonry after drying

9. After drying, place a foam seal on the masonry, in the same places where the window will rest. Reassemble at least 10 cm on the sides. The seal must be laid without being cut.

Do not forget to reposition the shims before replacing the frame

Do not forget to reposition the shims before replacing the frame

10. Be careful, remember to reposition the shims before replacing the frame.

Check the levels and install a wedge behind each fastener before attaching

Check the levels and install a wedge behind each fastener before attaching

11. Check the levels. Install a shim behind each attachment before attaching.

Check the correct squareness of the window frame

Check the correct squareness of the window frame

12. Check the proper squareness of the frame. For this, the lengths of its two diagonals must be identical.

Replace the doors and test the operation of the window

Replace the doors and test the operation of the window

13. Reposition the doors and test the operation of the window.

Make the window waterproof

On the outside, insert the bottom of the joint between the masonry and the frame

On the outside, insert the bottom of the joint between the masonry and the frame

1. On the outside, insert the bottom of the joint between the masonry and the new frame. Help yourself with a spatula.

Place special scilicone on the bottom of the joint

Place special scilicone on the bottom of the joint

2. Place special silicone on the bottom of the joint and smooth with your finger.

Inside, insert an insulation between the frame and the masonry

Inside, insert an insulation between the frame and the masonry

3. Inside, insert insulation between the frame and the masonry.

Realize interior finishes

Install finishing profiles around the window

Install finishing profiles around the window

1. You can now install the finishing profiles all around the window.

Adjust and glue the bottom finishing profiles

Adjust and glue the bottom finishing profiles

2. Adjust, paste, and then snap the low profile into the window. Help yourself with a mallet.

Adjust and glue the top and side finish profiles

Adjust and glue the top and side finish profiles

3. Do the same for the top and side finish profiles.

Insert the hinge covers

Insert the hinge covers

4. Finish by inserting the hinge covers.

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

On the same topic

  • DIY tips
    • How to change your windows and benefit from financial aid?
    • Install a window to better isolate: how to make a choice?
  • Questions answers
    • The installation of double glazing on old windows in 5 questions
    • Benefit from a tax credit: must the company be RGE?
    • Replace the metal seal of a French window with a rubber seal
    • Window replacement: new or renovation?
  • records
    • INSULATION: KEY POINT OF ENERGY RENOVATION

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