It is not comfortable when the temperature outside is falling down, and at home... as well, because the heater barely heats. It happens because of air in central heating system. Irregular heat radiation by heater or its loud working are typical symptoms of aeration. With strong aeration, lower part of heater will be cold and upper warm. The air in heater interferes not only heater works, but also a whole central heating system. It can provoke corrosion of steel parts. Products of corrosion can stuck in pipes and valves. That’s why air shall be removed immediately. In newer heaters it is a simple do: every heater is equipped with vents. Older models (or after few years) can make problems.

PVC Windows commonly consist of frames made of high-pressure polyvinyl chloride. Part’ construction is usually of 3 or 4 compartment. Compartments fulfill different functions: thermal and acoustic isolation, dehydration and stiffening.

Stiffness of PVC profiles is significantly smaller than wooden frames, that’s why it have to be extra strengthen by internal steel sections. Sections have to be rust-protected (i.e. zinc). Sections that are not sufficiently strengthened can deform while exploating. Plastic windows are usually white. Color sections are offered in many varieties that imitate wood: mahogany, dark oak, light oak, palisander, but also clear colors such as red, green, blue, yellow, etc. Because of low deformation resistance, PVC sash windows shall not be wider than 0.9m, and not opening ones than 1.5m PVC windows shall especially strictly installed. A proper mount and bounded size should prevent deformation.

 Wooden windows are mad mostly from pine or spruce wood, rarely from oak, mahogany or other exotic species. Mahogany is especially good for frames and casing, because of id hardness and resistance for deforming, however it is very expensive. Most popular pine wood shall be of highest grade, regular rings, without knags and fills.

Another point is solid wood glued. Glued wood frames are better secured from deformation. Sections should be glued lengthwise – they have smaller tendency to deform. Wooden windows have different shapes: triangular, rectangle, round, trapezoidal. Frames mostly are in natural colors (covered with transparent varnish. Other colors are available for special order.

 At the present, market of single families is a buyer’s market. Home offers and supply for sale is larger than demand for such real estates. Oversupply is a result of 2007 boom. Investors were attracted by rising prices of estates and began a lot of investments for single families, that were realized in 2007-2009. However, they did not predict that situation on market would drastically change. Some of investments that were realized in this period had not been sold, and simultaneously other were built. For buyers it is a right time to chose a good estate and to try the price negotiation. It does not mean that they will be successful. Many investment prices have been cut few times already and often houses are sold on the border of viability. But it is worth trying.

A windows can be cheap – but only a basic version. For each extra feature we have to pay a lot.

Typical models are cheaper
Some window producers (especially those larger ones) have a set of typical models of windows. These are windows of normal sizes, shapes and layouts – different in each of producer. Those windows are cheaper than those which are made for special orders. Producers prepare a programs of production fitted to market needs, that’s why they offer a narrow offer of size varieties. Sometimes it is not possible to choose a complete set of windows from company catalogue.
For example, it is hard to fit balcony doors on ground floor to first-floor window – of course the elevation looks best when both windows have the same width and layout of wings. It happens that in one catalogue two-winged balcony door are symmetric, and a normal window of same width has a completely different layout: one wing is smaller than the second. How to check it? Try to prepare a summary of all needed windows (with sizes, equipment and additional requirements) and ask chosen vendors and distributors for the offer.