How to install a roof window yourself

Installing roof windows is something even laypeople can do. The only thing you need is manual skill. This way, you save real money when building a house. If you don't feel up to it, it is recommended to hire a professional. An experienced roofer will install the window professionally so that everything stays dry in the apartment even during a heavy downpour. Are you installing roof windows for the first time? We offer you the right instructions for your new construction project.

Installing roof windows like a pro

Many attics offer optimal space for an additional room. This requires new insulation, plaster, windows, doors, and a fresh coat of paint. You install new drywall and apply new flooring over the old floorboards. Many homeowners shy away from installing roof windows. In general, installing them with two people is not difficult. You can quickly install top-hung, center-pivot, and roof access windows as well as skylights with just a few DIY skills.
Modern manufacturers pay attention to explicit, illustrated instructions and simple installation techniques to make your work easier. As a rule, you first remove the insulation, take out the roof tiles, cut the roof battens, and begin the installation. With your new roof window, the room gets sufficient light, you improve the room climate, and ensure proper ventilation.

Instructions for installing roof windows

First, purchase the desired window and have the necessary tools ready. Wear appropriate protective clothing to protect yourself from injury. Next, mark the opening for the new window. To do this, follow the specific measurements provided by the manufacturer in the installation instructions.Here you will find detailed instructions with pictures. Now the roof structure is exposed. Remove wallpaper, interior lining, and insulation until you reach the tiles.
All work is done from the inside. Afterwards, remove the roof tiles. Cover an additional row around the actual window size. Make sure to secure the sidewalk or courtyard beforehand in case tiles fall down. Then, remove the unnecessary battens of the substructure at the opening with a saw. The easiest way is to install the new window directly between two adjacent rafters.
Afterwards, measure the appropriate installation height. Now mount one support batten at the top and one at the bottom to hold the window frame. Before installing the frame, remove the window sash. The procedure is explained by the manufacturer in the included installation instructions. In the next step, attach the mounting brackets to the frame. The position and number vary depending on the type and size of the new window. Place the frame between the pre-mounted battens. Screw on the lower mounting brackets. Check the respective distances between the frame and the battens once again.
Now check the window sashes for functionality. Do the distances and fit work? Is the operation easy and smooth? Screw the brackets to the upper battens. Now fill the resulting gaps between the rafters and the frame with insulation material. Staple the underlayment tightly to the frame. This creates a rainproof and windproof transition from the roof structure to the frame.
Next follow the flashing and the drainage gutter. Always work from the bottom up here. Place the elements overlapping like shingles. This prevents rainwater from entering.
Professionals call the transition from the roof to the window the flashing. It serves to protect the wooden frame from weathering. You can find this in any hardware store to match the roofing. Finally, attach the lead apron to the bottom of the frame before re-roofing. Use an angle grinder to cut the parts to size. Finally, hang the window sash.

What to consider when installing roof windows

When installing, remember to wear appropriate protective clothing. Secure the sidewalk in case of falling materials. Have the necessary tools ready in advance to have everything at hand. Never work alone, especially when using larger window sashes. If you do not feel up to the installation yourself, hire an experienced roofer. They will install the window quickly and provide your new room with an ideal light source.