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Faq Questions

About the wood

  • Are tropical woods the most ideal for exterior carpentry?

  • In Spain most of the wooden windows are built with pine or Iroko wood. The wood of the group of the conifers like the Pine, have a good behavior in climates with a stable humidity throughout the year without dry seasons. The conifers are usually wood of little durability to the outdoors, in addition to the problem of the exudation of the resin and its greater dilation. These problems make them less longevous and require greater maintenance of varnishing.
    Therefore, they tend to have better adaptation and use in the north of the country and not so recommended for the Mediterranean and center.

    Conifers tend to be attractive in price and in veining making them very attractive for rustic country houses. Within the conifers the Pine Oregon and the Pin Pine are the ones that are better maintained and the less, the Pine-Fir.

    Irrespective of the species of conifers used, the wood must be laminated, without knots and with the correct degree of humidity.

    Tropical wood is characterized by its greater durability to the outside and its absence of resins and knots. They have less dilation and less maintenance, although not all are suitable for all types of varnishes and paints.

    Iroko, Niangon and Sipo are the most common and denser, although there are other light tropical woods such as conifers with a more competitive price.
  • Is Iroko always the best wood for windows?

  • The performance of Iroko wood (False Teka or African Teka) on the coastlines is excellent, with great durability to the outside. Performance in indoor climates with extremely dry summers causes stability problems so it should always be laminated. The varnishing is a point against this wood. The low homogeneity of the tones of the pieces makes them little advisable for transparent or clear colors.

    Our recommendation is the red woods like Niangón, Sipo or Sapelly for being oily woods of greater stability and better tinted.
  • Is Pine wood the most economical option?

  • No, there are currently light tropical woods with the same price as the pine, with a finish that are known as Iroko substitutes.

About the Lasur varnishing

  • How long could the painting of my window last?

  • 347/5000
    Resistance depends on these factors:

    The orientation and protection of the window by flights of roofs or blinds.
    If it is varnish or paint.
    The color of the finish of the wood.
    The species of wood used
    The climate and the altitude of the house.
    To know more about the resistance of the varnish, click Services-> Warranties-> Varnish
  • Is the paint more resistant than the varnish and what colors do you recommend?

  • The paint (opaque) is more resistant than the translucent varnish, so we guarantee the varnish until 6 years and the painting 10 years.
  • Is the smoke that Lasur varnish can emit during a fire toxic or dangerous?

  • No, because they are water-based varnishes made up of elastic resins even with flame-retardant properties.

  • Can tones change between carpentry parts?

  • It depends on the wood. Iroko, Framire and Oak, usually give more problems to match the tone of all the pieces, so it is recommended to dye them from medium to dark colors.

About the handles

  • Which finishes are the most recommended for their durability?

  • The brass finishes (gold) do not hold well against the moisture and the saltpetre of the sea. The pitting of these finishes in bathrooms, indoor pools or exterior doors near the sea are very common.
    The stainless or chromium finishes are usually the longest-lived and the least suffering from wear and tear.
    For gold finishes, it should contemplate finished with Zirtanio or PVD treatment, with guarantee of up to 20 years.
  • How many model options do I have?

  • On our website you can see a wide range of handles with excellent design and performance, although you can always tell us models of handles that can be found in some specialized stores.
  • Can I have the same model of handle on windows and doors?

  • Yes, there are many models that are available for windows and doors of passage, with the same design and finishes.

    It is advisable to first select the door handle and then see if the model for the window is available.

    Finishing and durability.

About the glazing

  • How does the interlayer thickness of a laminated glass influence its mechanical strength?

  • The breaking strength is not altered, however in the event that it occurs, the intercalary is the element that slows down and reduces the possibility of intrusion.
  • Is the resistance of a laminated glass equal to that of a single glass?

  • The flexural strength of a monolithic glass is superior to that of a laminated glass of equal total thickness. The advantage of this second glass is that although it breaks, the intercalary keeps the fragments together, which continues to provide some security.
  • What kind of effort does the glass in a window hold?

  • Basically the push (or suction) wind. The method of determining these values is indicated in the Technical Building Code and depends mainly on the geographical location, altitude and exposure.
  • How does the thickness of the chamber affect thermal insulation?

  • The thermal transmittance (value U) has an inverse relationship with the thickness. By increasing this, the radiation transmission decreases, so the U-value decreases. This is valid up to a chamber thickness of 15-18mm, from which the air currents that are created inside it increase the energy transmission.
  • How to select the thickness of the camera in a double glazing?

  • Independently of the incidence of the thickness of the chamber in the U-value (see above), it must be related to the thickness of the glasses, the dimensions and surface of the glasses, to ensure a minimum separation between glasses at all times.
  • What advantage does the use of layer glasses?

  • They allow better lighting and energy control, resulting in greater comfort and savings.
    Basically they can be divided between solar control (reflect energy), low emissive (reduce transmission / energy losses) and high performance or selective glasses, which incorporate both functions.
    Para conseguir el efecto bajo emisivo, estos vidrios deben ir montados en doble acristalamiento.
  • Why does information with values "U" appear in Kcal / m2 ° C and in other cases in W / m2 K?

  • The value "U" expressed in Kcal is lower than that expressed in W, which appears superior performance, when this is not the case. The European Standards consider the value "U" (equivalence of value K), in W / m2K
  • Is it true that a low-emissivity glass provides more freshness in summer and more heat in winter?

  • A glass of low emissivity alone, does not provide more heat in winter or cooler in summer. Its main function is to prevent the energy generated in the interior (cold or heat), "escape" to the outside, thereby reducing energy consumption and therefore, economic savings.
  • Does the position of the glass have importance in a double glazing?

  • In the case of incorporating layer glass (solar control, low emissivity, etc.) and although there are generally no large differences, the best performance is achieved with the proper position and in no case the layer can go outside the glazing.
    If the glazing has safety glasses (laminated or tempered), it should also be taken into account.
  • How do you avoid condensation?

  • Condensation is a physical phenomenon that depends on the existing ambient humidity and the temperature of the glass. Therefore, circumstances can always be given for it to occur.
    However, in order to reduce the risk, the use of low-emissivity glass can be used to keep the double glazing inside glass at higher temperatures. This is only possible with double or even triple glazing systems.
  • How do you avoid discoloration by the sun?

  • Laminated glass reduces the passage of ultraviolet rays, causing discoloration, by more than 95%. If you want to secure almost 100%, you should use thicker PVB laminate.
  • When do you need to temper a glass?

  • A glass with a high energy absorption index, under sun exposure, can reach important temperatures. If the heating is not uniform - which is usually the case - differences in expansion can break the glass. The tempered glass admits greater thermal differences between near points, reason why it is a guarantee before this phenomenon.
    This is something that should be considered when the absorption exceeds 40%. The polishing of edges reduces the risk, while the situation of partial shadows on the glass, existence of curtains nearby, stickers, opaque, currents of cold air, etc. are situations that empower it.
  • What effect does the moisture have on the glass?

  • In general the glass has a high resistance to the action of the water and the atmosphere. However, under certain conditions, the glass can be attacked, especially by alkaline solutions.
    In stacked sheets, water can be introduced by capillarity, lightly attacking the surface with the result of a sodium solution which in turn will damage the glass.
    So glass with moisture marks should be washed and dried before storing in a dry place.
  • What is light transmittance?

  • It is the percentage of light energy that is transmitted through the glass, with respect to the incident light flux.
  • What is light reflection?

  • It is the percentage of reflected light energy, relative to the incident light flux.
  • What is the solar factor?

  • Relationship between the total amount of energy entering through the glass, with respect to the incident. It is the sum of the direct solar transmission plus the absorbed by the glass and irradiated to the interior.
  • What is energy absorption?

  • It is the percentage of solar energy that absorbs the glass and that generates an increase of temperature in the same. This value is indicative of the risk of thermal shock rupture.
  • Can we establish acoustic attenuation comparisons?

  • Laboratory measurements are made according to EN 140-3 for airborne noise insulation (airborne). The weighted global acoustic insulation index values are calculated according to EN 717 and the results are expressed as follows:
    1.Air noise insulation index Rw
    2. Weighted sound reduction index Rw (C; Ctr), being
    Rw + C = Weighted noise reduction index pink
    Rw + Ctr = Weighted sound reduction index for traffic noise
    From the above we can say that the results thus obtained can be compared in their global values. However, the behavior and indices of different materials and compositions also depend on the frequency (Hz) of the noise to be attenuated.
  • Considering the existence of more than 25 commercial brands of double glazing, is there any difference between the characteristics and / or performance of the same?

  • Equal compositions give rise to identical performances and the trademark never implies a quality differential, which is the exclusive responsibility of the manufacturer. One proof of this is that when a manufacturer chooses to change trademarks, it does not see the quality of its products affected.

About the management of works and installations

  • What are the normal delivery times?

  • Our delivery times usually vary depending on the design and the quantity. The normal is a period of 5 to 8 weeks for delivery on site of the carpentry. For an exact term you should consult our dealers.
  • When are the windows installed?

  • Our technicians continuously monitor the evolution of the work and its condition. The ideal state for the assembly of windows and interior carpentry is when the works of masonry (tiling and paving), plaster and perlite in the interior and at least two of paint on the wall (only in the absence of the last hand of color). The floors of the terraces must be finished, as well as some hand paint on the outside or stone if you take it.
  • How long does the installation of the windows have?

  • For a single detached detached house, the assembly of exterior and interior carpentry is one week.
  • When should I order the pre-frames and what is the deadline for delivery?

  • At the beginning of the enclosure of the structure you must order the pre-frames, because the supplies of these usually take between 1 or 2 weeks. If your builder has started the enclosure, you should leave at least 5 cm to each side of the gap to receive the pre-frame later plus the height of the shade drawer if you were carrying.
  • How can I tell if a pre-frame is properly installed by my builder?

  • Our technicians review the placement and measurements of the pre-frames before the beginning of the production of the carpentry. In the case of exterior carpentry you should consider the following:
    The flange should be oriented outwards to receive the plaster or stone.
    They must be well set and level.
    The interior flooring must respect the levels marked on the pre-frame.
    The waterproofing must cover and overlap the lower part of the pre-frame, at least 20 cm high on the side walls. For more details visit the Professionals section.
  • Can I change the size of a window or door when the pre-frame is installed?

  • Before the start of production, all carpentry units are measured and checked on site. Before the final measurement you can change the measurements but you must let us know and your builder.
  • I want to change my existing carpentry in my house, but I need a builder for masonry work?

  • Most of the dismantled units cause damages in the walls of work such as breaking of tiles in bathrooms, debris on the walls, change of exterior tiles ... Our team of installers have trained personnel to repair and finish these small masonry works. To give you an exact estimate of the work you need, our technicians must visit your home.