Installing window joinery in an opening that is too small will obviously be impossible without first enlarging it. However, with the reverse situation, many people think that filling the cavities with mounting foam is good enough. This is what is usually done, as, for certain reasons, a minimum distance has to be maintained, but if it is too large, it may generate numerous problems. This is why an accurate window measurement is so important.
In such cases, window joinery installation is severely hampered, which promotes making mistakes. It is worth taking the time to accurately measure window openings, as inaccuracies in this respect may result in:
In the vast majority of cases, window joinery is square or rectangular. If this is what you want to install, get yourself an angle bracket ready before you reach for the tape measure. Use it to check if every corner of the opening has a right angle. If necessary, you can also check if both diagonals are of identical length. If major deviations in this area are found, it is essential to schedule masonry work to correct them. Only then can you proceed to measure the space for window installation. How do you do it accurately?
Using the measuring tape, measure the width, height and depth of the window opening. Do it in three different points (preferably at the edges and in the middle) – if you notice differences, write down the smallest obtained value. After this process has been completed, it is essential to repeat the window space measurement – this will give you greater confidence that it has been done correctly.
It is usually a result of human error. In order for the window opening measurement to be correct, it should be performed in a focused manner and without time pressure. Excessive haste, distraction or simple inattention are the main reasons for the inaccuracy of this process.
The second most frequent reason is questionable accuracy of the measuring tools used. Thus, try to steer clear of using low-quality brands.
Measuring a window opening, where there used to be an older type of window, can also be a problem. For the measurement to be correct, the space for the frame installation should first be cleaned very carefully of all residues of various building materials and only then should its dimensions be determined.
When addressing this topic, it is worth highlighting the fact that it is a mistake to install a window frame that is perfectly sized to fit the opening in the wall. There has to be a minimum gap, referred to as an expansion joint, between these pieces. After performing a correct measurement, you have to take this into account – normally it is from 10 to 20 mm and depends mainly on the window type. What is the purpose of keeping such a gap?
If the expansion joint is too small, properly sealing the window frame will be impossible. If it is too large, in turn, fitting the frame, and more specifically its solid anchoring, will become a problem.
Sticking to the above tips will surely make performing a correct measurement of window openings easier for you. However, keep in mind that properly fitting windows and getting them professionally installed is not enough to be sure they are perfectly sealed and functional. What is also crucial is their quality, so you should always choose products from valued manufacturers. You can find them in our Aluprof offer – we are the industry leader, offering the highest quality aluminium systems for windows! Contact our representatives, who will provide you with professional support.
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