What to do if roof windows leak when it rains?

Order repairs to Velux roof windows in Moscow and the Moscow region. Guarantee for all types of work. A specialist will visit you on the day of your request. We have a wide selection of original components and their analogues.

Features of Velux windows

VELUX was founded in Denmark in the 1940s and has been operating in the Russian market since 1991. It produces roof windows made of wood and plastic.

The basic package includes an air exchange valve for ventilation. The profile has various sizes and shapes. Convenient top and bottom opening of window systems. Shooting washable ventilation system filter.

The windows have high heat-saving properties, are frost-resistant, and reduce heat loss. The rubber seal prevents the profile from blowing out and freezing. Durable tempered glass can withstand any natural disaster.

The window system is made of high-quality laminated pine wood, which is coated with acrylic varnish. The covers are made of aluminum, the dividing frame is made of stainless steel.

Number of chambers in a Velux wooden profile:

  • single- and double-chamber (WoodLine GZR 3050/3050B standard, WoodLine GZR 3061/3061B standard);
  • two-chamber (classic WoodLine GGL, WoodLine GLL).

The windows are made in classic European design. They have a technologically advanced system for fastening linings and hidden installation of electrics.

Selection of opening options (handle top/bottom):

  • handle on top and bottom (GZR 3050/3050B, GZR 3061/3061B);
  • top handle (GGL, GLL 1061);
  • bottom handle (GPL/GPU).

Contact the professionals

Why we are the best:

  • Skills and extensive experience;
  • We repair roof windows with a guarantee;
  • Timely completion of the order;
  • Affordable price;
  • Services for modernization and installation of protective systems.

The user can view the full list of services and costs on the website. You can ask any questions you are interested in by calling the numbers provided; consultants will give a comprehensive answer or offer a solution to a difficult situation. Call +7 (495) 585-61-64!

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Prices for repairing wooden Velux windows

Velux wooden window adjustment cost

ServiceNotePrice, rub
Adjusting sashes and locking mechanisms on wooden windowsAdjusting the shutters will significantly increase the thermal insulation in the room and reduce street noise.from 300
Restoring the geometry of window sashesAllows you to eliminate distortions in the window structure.900 — 1200
Window hardware repairTroubleshooting window mechanisms for wooden windows.from 1300
Window mechanism lubricationIt is recommended to lubricate the window mechanism once every 3-4 years! It allows you to increase the service life of window mechanisms. 100

Prices for installing window sills in Velux windows

Window sillsPrice, rub/l.m
MöllerMontblanc
Window sill width (mm)
150 or 2001300700
350 or 40017501200
450 or 50021501400
600 or 70030501700
80037501850
Installation of window sills450
Reinstalling an existing window sill1150
Overlay for the RF window sill (white PVC sheet t=1.4 mm, semi-matte) max - 600 mm.2350
Extra charge for colored window sills (width up to 600 mm)+30%
AccessoriesPrice, rub/piece
End cap for window sill200
End cap for window sill trim300
ServicesUnit measurements Price, rub
Dismantling a window sill up to 40 cm deep without preserving the slabm.p.100
Removing a window sill over 40 cm deep without preserving the slab150
Installation of a white PVC window sill up to 40 cm deep (the price includes installation of end trims, but not the cost of the trims themselves)300
Installation of a white PVC window sill over 40 cm deep (the price includes installation of end trims, but not the cost of the trims themselves)450
Installation of a colored PVC window sill up to 40 cm deep (the price includes installation of end trims, but not the cost of the trims themselves)450
Installation of a colored PVC window sill over 40 cm deep (the price includes installation of end trims, but not the cost of the trims themselves)650
Reinstallation of window sills over 40 cm deep350
Reinstallation of window sill up to 40cm deep250
Cleaning the window sill from stains with a PVC cleanerm2950
Removing old stains from polyurethane foam7950
Arrangement of (bay window) window sill jointsPC.300
Installation of the end plate, without the cost of the plate50
Connecting window sills at an angle750

The cost of insulating Velux wooden windows

Service Note Price, rub/l.m
Replacing the rubber sealInsulation of wooden windows with rubber or silicone sealant.from 100
Installation of Euro-Strip seals made in SwedenInstallation of high-quality silicone seals with a diameter of 8 and 10 mm on wooden windows.from 180 to 250
Sealing joints, slopes and window sillsThe sealant is applied to the seam around the perimeter of the window on a clean surface or to replace the old sealant.50 — 100
Eliminating the causes of window foggingEliminating the causes of window fogging allows you to prevent and eliminate the formation of condensation on the glass.from 1000 rub/window

Prices for replacing glass and double-glazed windows of Velux wooden windows

ServiceNotePrice, rub/m2
Replacing damaged glass in wooden windowsA technician will arrive and replace the glass within one day.3000 — 3500
Replacing single-chamber double-glazed windows in wooden windowsA technician will arrive and replace the double-glazed windows within one day.2500 — 3000
Replacing double-glazed windows in wooden windowsA technician will arrive and replace the double-glazed windows within one day.3500
Replacing tinted glassA technician will arrive and replace the glass within one day.+30%
Replacement of triplex glassA technician will arrive and replace the double-glazed windows within one day.6000
Replacement of energy-saving glassA technician will arrive and replace the glass within one day.+20%
Tempered glass replacementA technician will arrive and replace the glass within one day.+30%

Cost of installation of Velux window slopes

Slope length/depth20 cm25 cm30 cm40 cm50 cm
150 cm230 rub.310 rub.380 rub.530 rub.670 rub.
200 cm330 rub.430 rub.530 rub.720 rub.910 rub.
250 cm430 rub.550 rub.670 rub.910 rub.1150 rub.
300 cm530 rub.670 rub.810 rub.980 rub.1390 RUR
The cost of F-profile/starter retail is 150 rubles/piece (1 piece = 300 cm)

Installing slopes on Velux windows

Slope width5-15 cm16-27 cm28-34 cm35-50 cm51-60 cm
Installation700 rub850 rub.980 rub.1200 rub.1310 rub.
Installation of customer slopes490 rub.610 rub.730 rub.850 rub.1090 rub.
Rewiring500 rub550 rub.600 rub

Cost of replacement and repair of Velux window fittings

ServiceNotePrice, rub
Repair of jammed sashesRepair of damaged window mechanism.from 1300
Replacement of window fittingsReplacing a damaged window mechanism on the sash with a new one.from 1700
Replacing hardware partsReplacement of damaged hardware parts with new ones.from 300
Modernization of fittingsInstalling the folding mechanism on the sash.2500 — 3500
Replacing the handleReplacing a broken handle with a new one on a wooden window.from 300
Installing a handle with a lockInstalling a handle with a lock on a wooden window provides increased security.from 900
Installing a handle on a balcony doorInstalling a plastic or metal handle on the balcony door from the outside.200 — 400
Installing a latch on a doorInstalling a slot lock on a balcony door allows you to fix the door in the closed position.600
Installation of the combInstalling a plastic or metal comb on a wooden window allows you to limit the opening and tilting of the sash.250 — 500
Replacing window hingesReplacing old hinges with new ones for wooden windows can improve the performance of the window.1600
Replacing door hingesReplacing old hinges with new ones for wooden doors can improve the performance of the door.from 1500
Installing hinge coversInstalling decorative overlays on the hinges of a wooden window allows you to cover the protruding metal elements of the fittings.400

Prices for installation work

ServiceNotePrice, rub
Replacing sashesReplacing blind sashes with opening ones with a tilt-and-turn mechanism allows you to make a wooden window functional.from 4500
Installation of ebb tidesInstalling window sills allows you to protect the external walls of the building from moisture and give the window a finished appearance.from 900
Installation of window sillsInstalling window sills on windows allows you to give the window a finished appearance, protect against the penetration of street cold and make the window more functional.from 1300
Installation of slopesInstalling slopes involves covering windows along the inner perimeter and allows you to improve the appearance of the window and increase its thermal insulation.from 500 per linear meter
Glazing of balconiesGlazing of balconies allows you to expand the living space, improve the appearance, increase the thermal insulation and protective properties of the balcony.from 10000
Insulation of balconiesInsulation of balconies allows you to expand the living space and increase the thermal insulation and protective properties of the balcony.from 450 per m2
Balcony finishingFinishing allows you to turn a balcony or loggia into a comfortable, cozy room.from 750 per m2
Window paintingPainting wooden windows can improve the appearance of the window and significantly increase its protective properties.from 350 per linear meter

Prices for sills and visors for Velux windows

ViewPrice, rub/m.p.
Cost of ebb, visor, flashing (tin plate coated with white/brown polyester)
Scan width
up to 100 mm200
up to 250 mm300
up to 400 mm400
up to 550 mm500
Installation of low tide (without taking into account the cost of dismantling double-glazed windows)400
Installation of a canopy (excluding the cost of dismantling double-glazed windows)1750
Installation of aluminum flashingsfrom 750
Reinstallation of the existing ebb, visor, flashing450
Installing the strip with screws100
PVC platband (white, with adhesive layer) with installation200
End trim for ebb (white)200

The indicated price includes delivery and installation of the product.

The prices indicated above are not a public offer. There are no exact prices that determine the fixed cost of repair work. The price directly depends on the labor intensity and complexity of the work, as well as the risk of damage to the window. The final price is determined after a specialist examines all existing damage, diagnoses them and determines the total scope of work to be done.

However, it is worth understanding that performing even very complex window repairs will significantly save your budget, since repair work will cost significantly less than new windows.

Where to install the window?

The design of skylights in the roof can be different, but it is important to choose the right place where such a structure will be installed. Most often, windows are placed between the rafters; the distance between them dictates the size of the window. The roof rafter system must not be disturbed: this can lead to its weakening and destruction. Therefore, the owners of the premises have little choice - either install high and long windows if more light is needed, or install several products at some distance from each other. This is the most optimal option, since it allows you to evenly distribute the load between the rafters and provides the most favorable, uniform lighting.

The size of the window depends on the area of ​​the attic floor. The glazed area should be at least 10% of the total floor area; the more glazing, the better the lighting in the room. It is important to note that the window opening is made without interfering with the rafter system, however, it is possible and even desirable to strengthen it, since the frame and glazing are quite heavy.

Pay attention to the choice of window width: the frame should be 6 cm narrower than the opening, this distance will be needed just to insulate the structure. If the rafters are close enough to each other, and it is not possible to install one wide window, you can place two narrower ones next to each other, which will fit between the rafters.

The installation height of the roof window also depends on the angle at which the roof slope is located. If the slopes are gentle, it will be most convenient to place the window closer to the top, if steep, on the contrary, closer to the bottom. The optimal height, most convenient for using and installing furniture and heating appliances, is 80-130 cm from the floor. If the tiles are made of ceramics, you will have to place windows along their edges, since such products cannot be cut. If the roof is covered with any sheet material, there will be no problems, and you can install the window in any convenient place. It is worth paying attention to the fact that the higher the window is located, the more light it will give, the same applies to the slope: the larger it is, the more light.

The most common problems with Velux windows and how to fix them

Poor quality installation

Most often, mistakes are made when the window system is installed incorrectly by specialists. This leads to fogging of the glass, the appearance of drafts, and deformation of the window structure. These problems are usually noticeable immediately after installation, so they are resolved under warranty. If malfunctions occur after the end of the warranty period, you must contact trusted specialists.

Solution: Sealing seams, adjusting windows, eliminating blowing.

Errors or dealer savings in production

Each dealer may have different build quality. There is a possibility of replacing the original fittings and seal with an unsuccessful analogue. As a result, this will lead to rapid wear and expensive repairs of components. It is advisable to make sure in advance about the quality of the selected window profile and the reliability of the dealer.

Solution: repair or replacement of fittings, replacement of the seal.

Problems during operation

The most common service is glass replacement. The glass may be completely damaged or have visual defects in the form of cracks and chips. Many people replace single-chamber glazing in a profile with double-chamber glazing to preserve heat in the room, as well as with low noise insulation.

Solution: Replacement of double-glazed windows and sash.

Causes of roof window leaks

One of the most common reasons for roof windows leaking during rain is poor installation. If you turn to scammers or suspicious fly-by-night companies, there is a high probability of poor-quality installation of the structure. The installation technology may be violated, or the window itself may not be initially manufactured correctly. As a result, during heavy summer rain, the window will begin to leak water.

The second common reason why plastic windows in the attic leak is the loss of the tightness of the structure. Over time, the rubber seals dry out and the sashes wear out. All this affects the tight fit of the sashes to the frame. As a result, water gets into the cracks and flows inside the room.

How to care for the seal so that it lasts a long time, read the article Caring for the seals of plastic windows and doors.

To prevent windows from leaking, they must be made with high quality. It is recommended to install structures with three sealing circuits. However, not all manufacturers worry about their reputation. That is why most often you can find frames with only two sealing contours.

How to order Velux window repairs

There are several ways to call a Velux window repair specialist:

  • by calling +7 (495) 773-00-93,
  • requesting a call back,
  • by contacting us by email The email address is being protected from spambots. To view the address, your browser must have Javascript enabled.,
  • by writing on Whatsapp.

The repaired window will be as good as new and will serve you for a long time. By contacting us, you will receive high-quality repairs, save money and receive our guarantee for all work done. The high professionalism of our craftsmen allows us to carry out all types of work, including the most complex orders, and affordable prices provide significant savings to our clients.

How to insulate the slopes of a roof window?

Insulation plays an important role, as it allows not only to protect the structure from freezing, but also to get rid of drafts and save on heating costs, since warm air will stay indoors longer.

If possible, it is best to install the product before the room has been finished. In order to create an opening, you need to mark it from the inside so that the rafters are not affected. From the latter you need to retreat 2-3 cm on each side. The future waterproofing should overlap the roofing material by 20 cm. The material is brought inside, attached using a stapler, after which part of the roofing is removed, and the roof sheathing is cut off from the rafters.

Installing roof windows yourself will void your product warranty, but if you are confident enough in your abilities, you can do the work yourself, following the instructions. An important role is played by the quality of installation of windows, how they will be adjusted. It is important not to leave any gaps through which moisture and cold air can penetrate from the street.

The weak point of roof windows requires special attention to avoid freezing and condensation.

You can insulate attic windows with your own hands after installing the main structure: for this, heat-insulating material is installed along the entire width of the slopes on the inside. It is important that the insulation closes all gaps. It is recommended to use moisture-resistant types of insulation, for example, extruded polystyrene foam.

Why do you need a window in the attic?

It is necessary to install attic windows in order to turn a dark attic space into a bright and ventilated one. This will help not only increase the service life of the roofing pie, but also turn the room into a residential one. In the attic you can arrange several bedrooms, a study, a nursery or a living room. The kind of lighting it should have depends on how you plan to use the room. For example, the bedroom does not need bright light, so large windows are not required there; for the living room and children's room, on the contrary, more space and good lighting are needed.

Sealing of attic windows

Poor sealing of assembly seams when installing roof windows can lead to condensation, freezing, the appearance of fungus and mold, damage to the window structure, the appearance of cracks and leaks.

To prevent these problems, it is important to follow the correct installation technology and use high-quality sealing materials.

Correct sealing of the joints of roof windows with the roof structure involves the installation of a sealing circuit consisting of hydro-, heat- and vapor barrier layers.

When sealing window seams, the following points must be taken into account:

  • the width of the installation seam should be the same for each side of the window;
  • Rolled protective materials (waterproofing, windproof film) are laid overlapping, going around the window frame around the entire perimeter;
  • to connect to the roof surface, protective waterproofing linings (flashing) are fixed strictly according to the window manufacturer’s instructions;
  • laying and fitting of roofing material onto the flashing is carried out using bitumen sealants, special sealing cords or tapes.

Dormer windows are part of the roof and together with it they absorb all atmospheric influences, so their sealing requires special care.

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