F.A.Q




WHAT IS uPVC?

Regular PVC (Polyvinyl Chloride) is a common, strong but lightweight plastic used in construction. It is made softer and more flexible by the addition of plasticizers. If no plasticizers are added, it is known as uPVC (unplasticized Polyvinyl Chloride). uPVC is used as a replacement for wood in construction, such as in window frames and window sills.

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WHAT ARE ADVANTAGES OF uPVC PRODUCTS?

• Does not crack, retains the shape within normal temperatures.
• Can be reshaped, 100% recycled.
• Safe – without plasticizers or phalates (BPA).
• Resistant to humidity to extreme weather conditions with low maintenance requirements.
• Does not rot, decompose.
• Do not require painting.
• No yearly surface inspection is needed.
• No permanent damage on the profile.

TIPS ON MAINTENANCE OF uPVC WINDOWS

uPVC windows are extremely easy to care for and require minimal maintenance. We recommend to follow this regular cleaning procedure:

  • Because uPVC window profiles have smooth surface, they are easily cleaned and maintained. For normal cleaning of the frame surface use a solution of mild dish washing liquid or ordinary household soap. Do not use scouring agent and paint thinner as you would only roughen up the beautiful smooth surface.
  • Lubricate the fittings twice a year to ensure ease of movement at all times, use household oil (machine oil).
  • Rub the sealsin the frame once or twice a year with sealing agent to keep them soft and in good working order. For this purpose, use an absorbent cloth.

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WHY DO I HAVE CONDENSATION ON MY WINDOWS?

In cold climate, condensation and even frost on windows can be seen. When warm indoor air cools below its dew point, liquid water condenses on the glass. Condensation typically develops around the edges of window glass.

The coldest part of a multiple-glazed window is around its edges. It is worse with true divided-lite windows, because each lite has edge spacers, the ratio of cold edge to warm center is much higher than with regular insulated windows. Moist conditions support mold growth, and hasten decay and paint failure.

Warm edges reduce the chance of condensation forming. The material the spacer is made from affects the rate that heat travels through a window‘s edge. We offer warm edge spacers as standard fare. Aluminum spacers are not recommended but can be produced under client needs. In VENTA WINDOWS products we use less conductive materials such as thin stainless steel, plastic, and rubber. Warm edge spacers can improve the U value of a window by 10% and boost the edge temperature by around 15°C, thereby reducing condensation.

WILL I SAVE ON MY HEATING AND COOLING COSTS?

Windows profile made of uPVC have better thermal insulation values and are able to reduce energy and heating costs. The U-value of our windows can be as low as 0.72 W/m2K.

WHAT IS A U-VALUE?

U-value is a measure of the heat gain or loss through glass due to the difference between indoor and outdoor air temperatures. A lower U-value indicates better insulating properties.

WHAT IS Uf-VALUE?

U-value of window frame. The Uf-value for the frame-sash combination is defined by means of measurement or calculation. The area for the calculation of the overall value of the window is the cross-section of the profile.

WHAT IS Ug-VALUE?

U-value of window glazing. The Ug-value is a function of the type of gas filling of the intermediate space between the glass sheets, the distance between the sheets and the number of sheets.

WHAT IS LOW-E GLASS?

Low-E glass reflects heat energy while admitting visible light. This keeps heat out during the summer and during the winter. In the winter, low-angle visible light passes into the house and is absorbed by the home’s interior.

HOW TO RECOGNIZE IF MY GLASS UNIT IS WITH LOW-E GLASS OR NOT?

Use a lighter near the glass unit. On every glass in the glass unit you will see reflection of two flames. Glass with slightly different color of flames (one flame with red shade instead of yellow) will be the glass of Low-E glass.

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WHAT IS THE DIFFERENCE BETWEEN TEMPERED AND LAMINATED GLASS?

Tempered glass is a kind of safety glass regularly used for many uses requiring superior strength and safety properties. Tempered glass is four to five times stronger than standard glass and does not break into sharp shards when it fails. Tempered glass is manufactured through a process of extreme heating and rapid cooling, making it harder than normal glass.

Laminated glass is two or more pieces of glass permanently bonded together with one or more plastic interlayers using heat and pressure. Laminated glass can be broken, but the fragments will tend to adhere to the plastic layer and remain largely intact. Laminated safety glass unique feature is to prevent or delay the penetration. The laminated glass resistance to various types of load is determined partly by the thickness of the glass and foil, but mostly on how many layers and foil was used.

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WHY DID MY GLASS UNIT CRACK?

When glass is under a stress – mechanical or thermal – it will accommodate the stress to a certain level. Once its threshold is reached, glass eventually breaks. The most common reasons for mechanical breaks are:

  • Uniform load (wind or snow);
  • Impact (accidental or deliberate);
  • Edge damage (poor handling, glass cutting);
  • Poor glazing (difference in size of glass and glazing frame, rigid setting blocks);
  • Site damage (spatter from site welding, particles from grinding and cutting).

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Thermal cracking appears when one area of a glass pane gets hotter than an adjacent area. There are two factors that cause this difference in temperature:

  • Solar radiation (depends on the orientation of the glass surface in respect of the cardinal directions);
  • Indoor conditioning and heating.

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ARE MY WINDOWS SOUNDPROOFING?

uPVC profile systems have multiple chambers inside the profile structure while the hardware system is equipped with multi-point locking system to ensure proper closing and tightness. This efficiently reduces noise disturbance down. The minimum sound insulation is 34 dB and it can reach as high as 47 dB.

DO uPVC WINDOWS CONTRIBUTE TO THE DANGER OF BUILDING FIRES?

Fire science shows that the greatest hazards are heat and carbon monoxide (CO). Mainly uPVC production materials consist of salt. Salt by its nature resists combustion. Hence, windows made of uPVC are naturally self-extinguishing, they are difficult to ignite, and the heat production is comparatively low.

CAN uPVC WINDOWS BE RECYCLED?

uPVC windows are very easy to recycle mechanically. Laboratory tests show it can be recycled more than 8 times. uPVC is a thermoplastic, and its products can be melted, remolded and reused repeatedly.

HOW SECURE ARE VENTA WINDOWS uPVC ENTRANCE DOORS?

Entrance doors are equipped with three-point locks to ensure security and tightness. Around the handle is a hardened steel plate to prevent drilling. Then hinges are mounted on the metal.

WHAT TYPES OF CYLINDERS DO YOU USE FOR uPVC DOORS?

We use ASSA cylinders which are approved by FG – the Norwegian Insurance Approval Board, established by Norwegian insurance companies. The high security cylinders are burglary safe: protected from drilling through and picking the lock.

ASSA cylinder M20 range is designed to be installed into EURO profile locksets. The EURO cylinders can be integrated in ASSA Master key system with scandinavian and international cylinder shapes.

The high security cylinders are burglary safe: protected from drilling through and picking the lock. Cylinder can easy be rebuilt to various lengths in accordance to existing door thicknesses. The M20 cylinder range fulfils the requirements in EN 1303 Grade 5, which means that they are safe and durable, and will last at least 50 000 cycles.

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WHAT IS THERMAL EFFICIENCY OF VENTA WINDOWS uPVC DOOR?

Depending on the design and if the frame is filled with glass unit U-value can vary from 1.6 to 1.2 W/m2K.

WHO CERTIFIES VENTA WINDOWS PRODUCTS?

Our uPVC products are certified by Norwegian Door and Window Control (NDVK). The uPVC products also have Enova authentication, which certifies that VENTA WINDOWS products have a U-value lower than 1.0.

ARE VENTA WINDOWS PRODUCTS ENVIRONMENTALLY FRIENDLY?

Our products contain absolutely no lead, they are approved as environmentally friendly and can be fully recycled. We provide only 100% recyclable products.

WHAT IS CMR?

The CMR transport document is an international consignment note used by drivers, operators and forwarders alike that governs the responsibilities and liabilities of the parties to a contract for the carriage of goods by road internationally.

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