First subject you must to think about, are your future windows
. Surely, you have a lot of alternatives to choose, but if you are staying in climate with strong winters, the best would be to choose warmer ones. There are a lot of different great species of it, from any available brands. Just ask someone qualified for his opinion, cause it will assist your internal and external wall insulation. So when you are visiting nearest market for fibreglass mesh, perhaps ask salesman about it?
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Next thing is the inside of your home. The regular walls will be nice, but not if you want to save as much warm air inside as possible. You need to get any information about interior paintings, fibreglass mesh, and other objects that will do this work fine. Also, even if you are living in flat, mainly with self heating, you should consider to invest in this, because it will lower your costs surely, just wait for winter to come. Good alternativen will be wainscotting, but some people are worried about getting bugs over it.
Last but no least, is external wall insulation, the most valuable of all - click here. If you won't do it in good way, another two methods will be ruined. You have a lot of materials available right now, in various prices. You may also use exterior playwood, which would change the look of your house. There are many of another colors of it, it might looks similar to an oak, or nut tree, be far more modern, like steel, or fake of glass. The only limit is your imagination. But the most relevant - it will assist you to leave the warm air inside your house.
When you are constructing your first home, you have plenty of decisions to consider. The size, height, number of levels. You need to choose contractors
, get the greatest fibreglass mesh and wooden bricks. But beside that, don't forget to invest into professional windows and interior & exterior wall insulation, cause it could help you to save many of money in the time of the winter.