Portes Fenêtres Vérandas

Compare the elements and the installation separately: frame material and profile, glazing build-up, hardware, and then the removal of old units, the perimeter seal, insulation of reveals, sills, flashings and making good internally. Two quotes with similar frames can differ substantially once the fitting method is described in detail.

Ask about lead times, how the building is secured between removal and installation, and who repairs internal finishes around the openings. Confirm the guarantee on both product and installation, how adjustments after a few weeks of use are handled, and whether the ventilation strategy changes once the dwelling is tighter. For conservatories, check structural connection, drainage and shading in the same document.

Replacing windows and doors is as much about the fixing and sealing as about the frames. The joint between frame and wall, the insulation of the reveal and the continuity of the airtightness layer decide whether the new units perform as intended or create draughts and condensation. Ask how the perimeter is sealed and how sills and flashings shed water.

Once a dwelling is made significantly tighter, ventilation deserves attention, since moisture that used to escape through leaky frames now needs a controlled route out. For conservatories and glazed extensions, discuss solar gain, shading and how the structure connects to the existing roof and drainage. Confirm ironmongery adjustment and glazing guarantees at handover.

This category brings together everything that opens, closes or glazes a home. Doors: front doors, interior doors, garage doors. Windows and their fittings: aluminium, wood or PVC windows, French windows, window repair, external blinds and awnings, shutters, curtains and interior blinds, insect screens, solar film. Glazed extensions: canopies, pergolas, conservatories.

These elements play both a practical and an energy role. A poorly insulated front door or windows are among the main sources of heat loss in an older home; replacing them has a direct, measurable effect on comfort and heating bills. A conservatory adds living or buffer space, but its thermal behaviour depends entirely on how it is designed.

Replacing windows or a front door involves removing the old frame, fitting it to the existing structure, and often redoing the air and water sealing around the opening: poor installation cancels out much of the thermal benefit of new glazing. A qualified joiner or installer is also essential for a motorised garage door, whose electrical connection and safety devices must meet requirements.

For a conservatory, a professional is needed from the design stage: orientation, glazing type, ventilation and sometimes connection to the home's heating system determine comfort in both summer and winter. Some municipalities require planning permission for a conservatory; check with your municipality's technical department before committing.

A window replacement starts with precise measurements and choosing materials and glazing, followed by ordering, with manufacturing time varying by supplier. Installation itself usually takes one to a few days for a standard home, depending on the number of openings. Sun protection or blackout fittings, such as shutters or blinds, are often installed at the same time.

A conservatory follows a process closer to a small construction project: technical study, any planning application, foundations or a slab, structure, glazing, then interior finishing. Depending on size and complexity, expect several weeks between the first appointment and handover.

For doors and windows, the frame material, glazing type, dimensions, number of openings and complexity of installation, particularly in a renovation with full removal of the old frame, are the main factors. A front door with reinforced security features or a motorised garage door adds further to the cost.

For a conservatory, the area, the type of structure and glazing, whether foundations are needed, and connection to the existing heating system determine most of the price. A canopy or pergola, being simpler, remains significantly cheaper than an enclosed, heated conservatory.

Replacing windows and exterior doors with more efficient models can be supported by Klimabonus Wunnen, which replaced the former PRIMe House programme in 2022, provided the required thermal performance is met. Exact amounts and conditions are published on guichet.lu and should be checked before signing a quote, as some steps must be taken before work starts.

Check that the company holds a business permit for joinery or construction work, as relevant, and professional liability insurance. A complete quote specifies the material, brand, the thermal and acoustic properties of the glazing, whether installation includes full frame removal, and interior and exterior finishing.

Compare quotes on a like-for-like basis: a quote that leaves out resealing around new windows or the interior finishing of a conservatory is not comparable to a complete one. Describe your project on vert.lu and we pass it to companies in our directory specialising in exterior joinery in your area; those available will get in touch to arrange a visit, with no obligation on your part.