Question 1

My window doesn't close properly — does it need replacing?

Accepted Answer

No, in most cases a simple adjustment or replacement of hardware is sufficient. A window that doesn't close properly usually has a worn seal, a misaligned espagnolette bolt, or a sagging sash — all elements we repair in a short intervention without replacing the entire unit.

Question 2

Can a misted double glazing unit be repaired?

Accepted Answer

No. Internal fogging means the seal of the spacer bar is broken: the argon gas has escaped and moisture has entered between the two panes. Only replacing the insulating glass unit solves the problem — the frame and window remain in place.

Question 3

My window handle spins freely, what should I do?

Accepted Answer

It's often the tilt-and-turn espagnolette bolt that is broken (Winkhaus, GU, Roto, Maco, Siegenia). Quick like-for-like replacement of the espagnolette bolt and adjustment of the closing pressure to restore the seal.

Question 4

Do you handle glass breakage claims with insurance companies?

Accepted Answer

Yes, Fermé-Lux compiles the broken glass claim for your insurance. We provide the photo reports and detailed quotes required for coverage by your company (emergency intervention, temporary securing, definitive replacement).

Question 5

Do you work on parallel sliding tilt-and-slide doors (PSK)?

Accepted Answer

Yes. PSK mechanisms are heavy and very specific. We repair the carriages, lubricate the tracks, and readjust the PSK espagnolette bolts of all brands (Winkhaus, GU, Schüco, Siegenia, Roto).

Question 6

My roller shutter strap is broken, can you change it?

Accepted Answer

Yes, quick replacement. We dismantle the internal or external box, change the strap and the winder (recessed or pivoting depending on the model), and check the tension of the curtain.

Question 7

My Somfy motor no longer works — can it be replaced without dismantling everything?

Accepted Answer

Yes in 95% of cases. We access the tubular motor via the box (hatch or partial dismantling) without touching the curtain or the guides. Replacement in 1-2h, Somfy, Becker, Simu or Elero motor depending on the original brand.

Question 8

Can an existing manual roller shutter be motorised?

Accepted Answer

Yes in 90% of cases. A Somfy, Becker or Simu tubular motor fits into the existing axle if the diameter is compatible. If not compatible, the complete axle is replaced. The operation generally takes one morning per shutter.

Question 9

The slats of my shutter are crushed, does everything need replacing?

Accepted Answer

No. We only replace damaged slats (they detach from the curtain without having to dismantle everything). If more than 50% of the curtain is damaged, complete curtain replacement is recommended.

Question 10

My Warema BSO is blocked, what are the common faults?

Accepted Answer

Three main causes for external venetian blinds (BSO/raffstore): the ladder tapes (cords that support the slats) break over time; the Warema radio motor loses pairing with the remote control; the receiver board in the box deteriorates due to infiltration. We diagnose and replace the defective part.

Question 11

My awning fabric is torn — do you re-cover it?

Accepted Answer

Yes, we offer re-covering solutions for awning blinds. On-site measurements, ordering of the fabric (Weinor, Warema, Nova Hüppe, Erhardt), installation and tensioning. Possibility of adding an automatic wind/sun sensor to prevent future damage.

Question 12

Can a wind sensor be installed on an existing awning?

Accepted Answer

Yes. A Somfy Eolis or Warema wind sensor connects to most existing motorisations and automatically retracts the awning in case of a gust — essential to prevent fabric and articulated arm breakage.

Question 13

My key turns freely — door blocked, what should I do?

Accepted Answer

Do not force anything: you risk pushing the broken piece deeper. Our technicians have specific extraction tools that retrieve the broken piece without damaging the cylinder in 90% of cases. If the cylinder is damaged, we replace it immediately.

Question 14

My front door has sagged and rubs — is it repairable?

Accepted Answer

Yes. Sagging usually comes from hinges that have become misaligned over time. Adjustment or replacement of hinges, checking the frame and adjusting the threshold — a quick intervention that avoids changing the entire door.

Question 15

After an attempted break-in, do I need to change the entire lock?

Accepted Answer

Not always. Honest advice: if only the cylinder is damaged, it is sufficient to replace it (with an A2P BP2 or BP3 certified model for more security). The multipoint lock itself is often intact. We provide a photo report and quote for your insurance.

Question 16

Faulty communal door closer — do you intervene for property managers?

Accepted Answer

Yes, we regularly work with property management companies in Luxembourg. Periodic maintenance of Geze, Dorma, Assa Abloy door closers, intervention on mandate and detailed quote for general assembly.

Question 17

My garage door comes down by itself — is it dangerous?

Accepted Answer

Yes, serious danger. The symptom 'the door descends by itself' is almost always a sign of a broken or slack torsion spring. The door is no longer balanced. Never hold a descending door: risk of crushing. Cut the power, leave the door in the low position, call us.

Question 18

Can a Hörmann or CAME motorisation system older than 15 years be repaired?

Accepted Answer

Yes in 80% of cases. Hörmann maintains parts for 15-20 years depending on the models (SupraMatic, EcoMatic). For other brands, we stock common boards and motors. Beyond that, replacement with a recent model compatible with existing tracks and shaft.

Question 19

How much does a torsion spring replacement cost?

Accepted Answer

On quote after diagnosis, according to the weight and dimensions of the door — calibrated part and installation included. Rebalancing, lubrication and full test included. We never replace a single spring if there are two — they wear out together.

Question 20

Do you work on industrial doors (warehouse, logistics)?

Accepted Answer

Yes. We intervene on roller shutters, industrial sectional doors and high-speed doors for warehouses, businesses and professional car parks — to avoid blocking your activity. Urgent interventions possible to limit downtime.

Question 21

My sliding gate derails, is it serious?

Accepted Answer

Yes, to be dealt with quickly otherwise the complete structure can be damaged. Often it is the rollers (wheels) that are worn or the rack is misaligned. Replacement of rollers, cleaning and straightening of tracks, realignment of the rack.

Question 22

My gate strains and trips the circuit breaker — what should I do?

Accepted Answer

Cut the power before anything else. The cause is often mechanical (seized hinges on a swing gate, blocked rollers on a sliding gate) which forces the motor. Diagnosis: lubrication + replacement of the mechanical part + motor check to ensure it has not been damaged.

Question 23

Can an existing manual gate be motorised?

Accepted Answer

Yes, on swing or sliding gates. Prior technical study to check compatibility (condition of hinges/tracks, nearby electrical supply). Installation of Somfy, Marantec, BFT, Motorline motorisation depending on the model, with mandatory safety photocells and remote controls.

Question 24

What is your intervention time in Luxembourg?

Accepted Answer

We intervene quickly throughout the Grand Duchy from our base in Sandweiler. For an emergency (blocked door, broken glass, business), contact us by phone +352 35 53 78 or send a photo via WhatsApp to +352 691 54 54 07 for an immediate diagnosis.

Question 25

Which areas do you cover?

Accepted Answer

The entire Grand Duchy from Sandweiler: Luxembourg City, Esch-sur-Alzette, Differdange, Dudelange, Mersch, Diekirch, Ettelbruck, Grevenmacher, Echternach, Strassen, Bertrange, Hesperange, Junglinster, Niederanven — 4 organised operational zones (Centre, South, East, North).

Question 26

Why does my tilt-and-turn window remain stuck in the tilted position?

Accepted Answer

It's a classic: the reversing carriage of the hardware (Winkhaus, GU, Roto, Siegenia) became misaligned when the handle was turned with the sash wide open. We re-engage the mechanism, replace the stay if bent, and adjust the closing pressure on the eccentric keeps. Short intervention, without removing the sash.

Question 27

My triple insulating glazing has lost its argon — is it visible to the naked eye?

Accepted Answer

Yes when the leak is advanced: condensation between the panes, distorted reflections, a cold sensation near the glass. The argon gas escapes when the butyl/polysulphide seals of the warm-edge spacer bar fail. Only replacing the insulating glass unit restores the original Ug coefficient — the PVC or aluminium frame remains in place.

Question 28

My Hoppe handle has become loose, can I change it myself?

Accepted Answer

Technically yes, but a loose handle often hides a worn espagnolette bolt or a broken spindle screw on the hardware side. We replace the Hoppe handle like-for-like (standard 7 mm spindle) and check the espagnolette bolt's spindle to avoid a callback within 3 months. Send us a photo of the marking under the rose for an immediate quote.

Question 29

My Schüco aluminium sliding door rubs on the floor, what should I do?

Accepted Answer

Most often the running carriages are fouled or worn, and the bottom EPDM seal has been crushed. We remove the sash, replace the set of Schüco/GU carriages, re-lubricate the stainless steel track and install a new brush seal. Sliding becomes fluid again on a sash weighing up to 200 kg.

Question 30

How long does an intervention on a misaligned tilt-and-turn window take?

Accepted Answer

Between 30 minutes and 1h30 per window depending on the hardware brand and access. A simple adjustment of hinges and keeps takes 20 minutes; a complete replacement of a Winkhaus or Roto espagnolette bolt takes approximately 1h. On-site diagnosis in 15 min included in the travel fee.

Question 31

Can a PSK (parallel tilt-and-slide door) over 10 years old be repaired?

Accepted Answer

Yes, in 85% of cases. PSK GU, Winkhaus and Roto carriages remain available as spare parts for ranges launched after 2005. We dismantle the carriage, replace the ball bearings or the complete assembly, re-grease the rail and readjust the parallel espagnolette. If the sash exceeds 200 kg, two technicians will be required.

Question 32

Why is my Somfy roller shutter no longer responding after a storm?

Accepted Answer

Storms frequently burn out the tubular motor's capacitor or the io-homecontrol receiver board in the casing. We test with an ohmmeter, replace the capacitor if the motor still runs, otherwise we install a new Somfy Oximo or Ilmo motor. Remember to declare it to your insurance: lightning is covered.

Question 33

My roller shutter curtain is misaligned and goes up crookedly, how can I re-centre it?

Accepted Answer

The curtain comes out of the guides when the fixing clips on the axle have failed or the upper limit stops are no longer set. We remove the casing, recentre the curtain on the fastenings, replace broken clips and reprogramme the limit stop of the Somfy, Becker or Simu motor. Intervention in 1h30.

Question 34

The battery in my Somfy Telis remote control is new but the shutter no longer responds — what should I do?

Accepted Answer

In 70% of cases, the radio pairing has been lost (power cut, unintentional reset). We reprogramme the remote control to the motor from the control point or via the PROG button, without dismantling the casing. If the pairing doesn't hold, the internal radio receiver is faulty and we replace it.

Question 35

My roller shutter makes a rattling noise when descending, is it serious?

Accepted Answer

The noise usually comes from the tubular motor whose electromagnetic brake is worn, or from a cracked aluminium slat rattling in the guides. Diagnosis in 10 minutes: if it's the motor, replacement with a silent Somfy Oximo; if it's the slats, replacement per unit without changing the entire curtain.

Question 36

Is it possible to integrate my existing shutters into TaHoma or a smart home hub?

Accepted Answer

Yes, if your motors are radio (RTS or io-homecontrol). We pair the TaHoma Switch or Connexoon box with each Somfy motor, then configure scenarios, schedules and solar sensors. For older wired motors, we install a micro radio receiver in the casing to make them controllable.

Question 37

How can I recognise a worn-out tubular motor before it fails?

Accepted Answer

Three signs: thermal protection tripping (the shutter stops halfway and restarts 10 min later), metallic rolling noise, limit stops that self-adjust. We preventively replace the Somfy, Becker, Simu or Elero motor in 1h — before total failure on a Sunday evening.

Question 38

The guide tapes on my Warema external venetian blind are broken, how long will it take to replace them?

Accepted Answer

Approximately 2 to 3 hours per window. The ladder tapes (ladder cords that maintain the slat inclination) wear out due to UV exposure and generally break between 8 and 12 years. We dismantle the curtain, replace the complete set of original Warema ladder tapes and readjust the motor's travel. 2-year parts warranty.

Question 39

My Weinor awning no longer fully retracts, what's causing the problem?

Accepted Answer

Generally two causes: the articulated arm has lost its tension (fatigued spring inside the aluminium profile), or the motor's upper limit stop has become misaligned. We re-tension or replace the arm, reprogramme the Somfy/Warema motor and check the parallelism of the load bar. Ladder intervention without a platform up to 4 m.

Question 40

My Eolis wind sensor no longer triggers the automatic retraction of the awning, why?

Accepted Answer

Three possibilities: the CR2032 lithium battery is flat (lifespan 2 to 3 years), the Somfy Eolis 3D sensor's propeller is blocked by a spider's nest, or the wind threshold programming has been erased. We diagnose in 10 min, replace the battery or the complete sensor and recalibrate the threshold adapted to your exposure.

Question 41

Can an awning be re-covered without changing the cassette or the arms?

Accepted Answer

Yes, that's precisely the benefit of re-covering. We take the exact measurements of the existing frame (Weinor, Warema, Nova Hüppe, Erhardt), order the solution-dyed acrylic fabric (Dickson, Sattler) and install it on your original articulated arms. Savings of 50 to 60% vs a complete new awning.

Question 42

My external venetian blind makes noise in the wind even when retracted, is it normal?

Accepted Answer

No. When a retracted external venetian blind rattles in the wind, it means the slats in the upper position are no longer tight due to lack of tension in the ladder tapes, or the upper locking clip is broken. We re-tension the curtain, replace the clip and check that the Warema or Somfy motor applies the compression stroke correctly at the end of the ascent.

Question 43

What preventive maintenance is needed for an awning in professional use (restaurant, terrace)?

Accepted Answer

A minimum annual check: fabric cleaning, lubrication of articulated arms and axles, wind sensor verification, Somfy or Warema motorisation test. For intensive terrace use, we recommend a maintenance contract with priority intervention in case of breakage — essential to avoid closing for a weekend.

Question 44

Why does my A2P multipoint lock stiffen at the end of its travel?

Accepted Answer

Two main causes: the frame has slightly sagged and the side bolts no longer enter the strikes straight, or the Kaba/Iseo cylinder has a fatigued return spring. We realign the strikes, lubricate the rods and replace the cylinder if necessary with an A2P BP2 or BP3 certified model. Your insurance will appreciate it.

Question 45

My Geze or Dorma door closer slams, how can I adjust it?

Accepted Answer

A hydraulic door closer that slams has lost its oil or its speed adjustment screws (V1 closing, V2 final snap) have moved. We adjust both screws, bleed if recoverable, otherwise replace the Geze TS 2000/4000 or Dorma TS 83 unit. Critical in co-ownerships to preserve the fire door and door frames.

Question 46

My access control badge no longer opens the building door, what should I check?

Accepted Answer

Firstly, the electronic head's battery (CR123 or CR2 battery depending on Salto, Iseo, Kaba model), then the badge programming which may have been revoked by the property manager. We diagnose the system, reprogramme the badges and replace the head or the central unit if faulty. Intervention under property manager's mandate.

Question 47

After a break-in, how long does it take to temporarily secure my front door?

Accepted Answer

Emergency intervention in 1 to 2h in Luxembourg City depending on the time. Immediate securing (panels, metal reinforcements, temporary cylinder), photo report for insurance, then return within 48 to 72h with the definitive multipoint lock and A2P BP2 cylinder. Send us a WhatsApp photo for a quote in 15 min.

Question 48

My communal fire door no longer closes by itself, is it a legal problem?

Accepted Answer

Yes: a fire door must imperatively close by itself to maintain its EI30/EI60 rating. We replace the compliant Geze or Dorma door closer, check the spring hinges and the intumescent seal. Priority intervention for property managers — compliance report provided.

Question 49

My front door brush seal is worn, can it be replaced without removing the door?

Accepted Answer

Yes, in 90% of cases. The bottom brush seal (threshold) and peripheral EPDM seals are changed in situ in 30 to 45 minutes. This restores air/water tightness and reduces thermal losses by up to 15% on a well-insulated entrance door. Universal parts suitable for most aluminium and PVC frames.

Question 50

My Hörmann SupraMatic electronic board burnt out after the storm, do I need to change the entire motorisation system?

Accepted Answer

No. In 80% of cases, only the logic board or transformer is faulty — the motor itself is quite resilient. We replace the original Hörmann SupraMatic E3/E4 or ProMatic board in 1h, reprogramme the BiSecur remote controls and test the photocells. Consider adding a surge protector to prevent recurrence.

Question 51

My sectional door steel cable has loosened on one side, is it dangerous?

Accepted Answer

Yes, risk of panel derailment and falling. A slack cable often means a torsion spring is broken or the end pulley is seized. Cut the power, do not operate the door, call us. Replacement of cables in pairs (never just one), torque adjustment and full test.

Question 52

My BiSecur remote control only works within 1 metre of the motor, why?

Accepted Answer

Classic: the CR2032 battery is weak (even if the LED still lights up), or the Hörmann receiver antenna is cut or poorly positioned. We replace the battery, re-pair the BiSecur HS5 remote control and reposition the wired antenna to restore a range of 25 to 30 m. Intervention 20 minutes.

Question 53

My garage door photocells are flashing red, how can I realign them?

Accepted Answer

Misaligned or dirty cells: the door refuses to go down and flashes. We clean the emitter and receiver, realign with a laser level on a perfectly parallel plane and check the connections (often oxidised in damp garages). If a cell is faulty, replacement with Hörmann EL 101 or universal compatible.

Question 54

A panel of my sectional door is dented after an impact, can only that one be changed?

Accepted Answer

Yes, in 95% of cases. Hörmann doors (LPU 42, LPU 67, RenoMatic) are designed with independent, separable panels. We identify the Hörmann code on the plate, order the panel in the correct colour and profile (Sandgrain, Woodgrain, Silkgrain) and replace it in 2h. Avoids 70% of the cost of a new door.

Question 55

My outdoor keypad no longer works in winter, what should I do?

Accepted Answer

Frost affects low-end radio keypads: hardened membrane, weak battery, electronics failing below -5°C. We replace with a waterproof IP65 Hörmann FCT 3 BS or FCT 10 BS keypad and reprogramme the codes. For customers in the North (Diekirch, Ettelbruck) area, we systematically recommend the waterproof model.

Question 56

My sliding gate rack is bent after an impact, does it need total replacement?

Accepted Answer

Not necessarily: racks are installed in 1 or 2 m sections and only deformed sections need to be changed. We remove the warped section, install a compatible nylon or steel rack (BFT, Came, Nice), realign with a laser level and readjust the 24V motor's pinion. Silent sliding restored.

Question 57

My swing gate actuator is leaking oil, is it repairable?

Accepted Answer

Rarely: a leaking hydraulic ram has worn seals or piston, and repair costs more than a new ram. We replace with a BFT Igea/Phobos, Came Ati or FAAC 412 ram compatible with your original fixings. The control board is reused in 90% of cases.

Question 58

My BFT or Marantec gate control board no longer responds to remote controls, is it a breakdown or hacking?

Accepted Answer

Much more often a 433 MHz radio receiver failure than a hacking attempt. Humidity in the casing, blown fuse or corrupted memory. We diagnose, replace the receiver or motherboard (BFT Libra, Marantec Comfort, Motorline) and re-pair all remote controls. Rapid intervention in the Centre and South areas.

Question 59

My gate photocells no longer detect obstacles, is there a risk for children?

Accepted Answer

Yes: faulty photocells = unsecured gate, liability incurred in case of accident. We replace with compatible wired or radio cells (BFT Desme, Came DIR, Nice Era F), align and test the reversal scenario. Mandatory for all EN 13241 compliant motorisations.

Question 60

My gate backup battery only lasts for 2 openings, is that normal?

Accepted Answer

No, the 12V/1.2 Ah batteries of BFT, Came, Somfy motorisations have a lifespan of 3 to 5 years. Beyond that, the capacity drops sharply. We replace the original battery and test the autonomy: a new battery should allow 8 to 10 operations in case of a power cut. Check included with every maintenance visit.

Question 61

Can Somfy io-homecontrol compatibility be added to an existing BFT gate?

Accepted Answer

Yes, via a universal receiver or an io interface (Somfy izymo IO for dry contact). We connect the interface to the control input of the BFT board, pair it with TaHoma or Connexoon, and keep your original remote controls. Your gate becomes controllable from the Somfy app without replacing the motorisation.

Question 62

Do you intervene at weekends or in the evenings in case of emergency?

Accepted Answer

Yes, we provide a 7/7 emergency call-out service for blocked doors, broken glazing, open gates, or businesses needing securing. Contact us by phone +352 35 53 78 or via WhatsApp +352 691 54 54 07 with a photo. Immediate quote and priority intervention in Luxembourg City, Esch, Strassen, Bertrange.

Question 63

Why choose a multi-brand repairer rather than a single-brand dealer?

Accepted Answer

A single dealer will always impose the brand they distribute, even if your breakdown is just a simple seal or spring. We are multi-brand (Hörmann, Somfy, BFT, Winkhaus, GU, Warema, Geze…): we repair the defective part with the original when available, or a certified equivalent, without pushing for the sale of a new product.

Question 64

What payment methods do you accept for a service call?

Accepted Answer

Bank transfer, credit/debit card on site, Payconiq, and cash within legal limits. For property managers, co-ownerships, and businesses: invoice 30 days end of month. Free quote within 24 hours, valid for 30 days. Payment after intervention and client validation — never an advance payment over the phone.

Technical FAQ — 25 frequent questions on closure repair

Technical FAQ

11 questions — joinery (windows, psk, hs, glazing)

10 questions — roller shutters

9 questions — solar protections (bso, awnings)

10 questions — doors and locksmithing

10 questions — garage doors

9 questions — gates

5 questions — cross-cutting questions

What our clients say

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