The Content Of The Article:

Install a roof window

The development of the attic passes through the installation of specific windows that will allow to penetrate the light of day. A modern version of the snuffbox or skylight of olden days, the roof window has earned its nobility by giving not only daylight in the attics, but also offering a view of the outside, without compromising their comfort. thermal. The installation of this kind of window is now within the reach of any good handyman. Pay special attention to the perimeter sealing of the window.

Necessary material

  • Measuring and tracing kit (meter, pencil, bubble level)
  • Counter Saw
  • Metal saw
  • Wool knife
  • Cutter
  • Screwdriver set
  • Hammer
  • screwdriver
  • Stapler
  • Saber saw
  • battens
  • rafters
  • clogs
  • Masking adhesive
  • Airtightness membrane
  • Rain cover and gutter
  • Roof window and skins

Steps

  1. Create the opening
  2. Create the attachment frame
  3. Prepare the roof window
  4. Lay the window
  5. Perform outdoor waterproofing
  6. Lay the interior trim

Create the opening

Position the window between 1.85 m and 2.20 m from the ground

Position the window between 1.85 m and 2.20 m from the ground

1. Determine the location of the roof window first. To facilitate its opening, position it between 1.85 m and 2.20 m from the ground.

Find the location of the window

Find the location of the window

2. Using the masking tape, locate the desired location on the sub-slope.

Start with a small cut

Start with a small cut

3. Start with a small cut and adjust the position of the window according to the structure of your frame.

Drill in each corner of the window for easy cutting

Drill in each corner of the window for easy cutting

4. Delimit a first opening and drill in each corner to introduce the saw and facilitate your cutting.

Cut the plasterboard with the saw

Cut the plasterboard with the saw

5. Cut following the contours and remove the plate.

Saw exposed metal rails

Saw exposed metal rails

6. Saw the exposed metal rails, remove them and cut.

Remove the insulation

Remove the insulation

7. Also remove the insulation.

Set the width of the window

Set the width of the window

8. Locate the position of the rafters. This will accurately define the width of your window. If necessary, adjust it to minimize cuts.

Extend to the final width of the window

Extend to the final width of the window

9. Expand your opening to the final width. To better access the tiles.

Cut out the underlay screen

Cut out the underlay screen

10. Cut the underlay screen in the middle before folding it down.

Lay the accessible tiles from the inside

Lay the accessible tiles from the inside

11. Remove the accessible tiles from the inside.

Cut the battens to the width of the window

Cut the battens to the width of the window

12. Cut the batten to the width of your window and remove it.

Clear the window opening completely

Clear the window opening completely

13. Finally, remove the other tiles and completely disengage the opening by cutting the rest of the battens.

Create the attachment frame

Check the plumbs of the lintel before nailing them to the rafters

Check the plumbs of the lintel before nailing them to the rafters

1. Now lay the two battens that will support your window. For more details, refer to the product manual. Check their balance before nailing them to the rafters.

Inside, widen the opening to the laid battens

Inside, widen the opening to the laid battens

2. Inside, widen the opening to the battens you have just laid.

Creating the trimmer to fix the frame

Creating the trimmer to fix the frame

3. In order to fix the frame of the new window, we will create a frame, also called a trimmer.

Determine the location of the trimmer using a level

Determine the location of the trimmer using a level

4. Determine its location at the bottom and top using the level.

Cut the frame to the desired height

Cut the frame to the desired height

5. Cut the frame to the desired height.

Cut the lengths of rafters needed

Cut the lengths of rafters needed

6. Cut the lengths of rafters needed. We will fix them on the frame using hooves.

Screw the hooves to the rafters and the frame

Screw the hooves to the rafters and the frame

7. Screw the hoofs to the rafters at the bottom, then to the frame and do the same for the top herringbone.

Staple the underlay screen

Staple the underlay screen

8. Then cut the underlay screen to the desired width and then staple all around.

Prepare the roof window

Remove the shims from the window

Remove the shims from the window

1. Remove the shims and outer finishes of your window.

Press the latches and remove the sash

Press the latches and remove the sash

2. To gain access to its mechanism, open it completely, press the latches and remove the door.

Screw the fixing brackets on the frame

Screw the fixing brackets on the frame

3. Finish by positioning and screwing the four mounting brackets onto the rack.

Lay the window

Remove an extra tile ranger

Remove an extra tile ranger

1. To facilitate your installation, remove an additional row of tiles.

Lay the frame on the battens

Lay the frame on the battens

2. Place the frame on the battens.

Screw the brackets without blocking them

Screw the brackets without blocking them

3. Secure the four brackets, but screw them in without blocking them.

Adjust the squareness of the window frame

Adjust the squareness of the window frame

4. Adjust the squareness of the frame. To identify you, know that the lengths of your two diagonals must be identical.

Put back the opening

Put back the opening

5. Replace the door by passing it in the frame with the control bar on the outside.

Position the lock to hold the opening

Position the lock to hold the opening

6. To hold the door open, position the latch in the hole and slide the hinges into the hinges.

Remove the lock

Remove the lock

7. Remove the lock. Turn the opening completely to close it.

Adjust the parallelism of the lower cross

Adjust the parallelism of the lower cross

8. To adjust the parallelism of the lower cross member, loosen the square. If necessary, adjust with the provided corners.

Secure the frame to the frame

Secure the frame to the frame

9. Secure finally by solidarisant the frame on the frame.

Test the operation of the roof window

Test the operation of the roof window

10. Test the correct operation of your roof window.

Perform outdoor waterproofing

Slide the rain cover under the tiles and fix it to the battens

Slide the rain cover under the tiles and fix it to the battens

1. Replace the opening and position the rain cover by stapling it directly onto the frame. Then slip it under the tiles and fix it to the battens.

Adjust the rain cover

Adjust the rain cover

2. Secure the gutter with a slope to drain the water and adjust the rain screen.

First mount the bottom element to facilitate the flow of water

First mount the bottom element to facilitate the flow of water

3. We will now install the external waterproofing. Start with the bottom element to facilitate the flow of water then attach the following to the frame.

Adapt the flexible part to the tile

Adapt the flexible part to the tile

4. Once all the elements are laid, adapt the flexible part to the tile.

Cut the foam with the cutter

Cut the foam with the cutter

5. Cut the foam with the cutter following the shapes and outlines.

Rest the tiles and the opening

Rest the tiles and the opening

6. Finally, rest the tiles, then opening it.

Lay the interior trim

Enlarge the opening on the height

Enlarge the opening on the height

1. To position the interior finish, enlarge the opening to its height.

Install the airtight membrane

Install the airtight membrane

2. Install the airtight membrane.

Screw the mounting brackets directly onto the frame

Screw the mounting brackets directly onto the frame

3. Screw the mounting brackets of the interior finish directly onto the frame.

Clip the interior trim and then the screw caps

Clip the interior trim and then the screw caps

4. Finally, clip the interior trim and install the screw covers.

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

This may interest you


Video Instruction: How to install a Velux roof window in a slate roof at standard height