Guidelines of the Building Research Institute (ITB) shall be applied to the installation of window joinery. Proper installation and maintenance will ensure failure-free use of PVC window joinery for many years to come.
Before taking a decision who will perform the installation in our house, it is worth checking the opinions on the installation company, because my experience confirms that in 99% of cases, the complaints about window joinery in our company result from incorrectly performed installation.
Our guarantee liability is limited to installations carried out in accordance with the "Installation and Maintenance Instructions" provided to our Customers.
Please read more on 5 most often installation errors and their consequences:
Window installation without proper cleaning of the substrate causes the formation of cracks through which moisture and air can penetrate, dampness of the wall, leakage of water from underneath the window sill, draughts, moisture conducive to the development of mould fungi.
Too few anchors or dowels used for the installation cause deformation of the window, leakage, penetration of moisture into the interior, draughts.
Too few anchors or dowels used for the installation cause deformation of the window, leakage, penetration of moisture into the interior, draughts.
Uneven window seating, incomplete sealing causes window deformation, penetration of rainwater into the interior, draughts, wall dampness.
Excessive expansion joint clearance on the window frame side causes water vapour to condensate on the panes, air to enter the room, and after some time, water to leak into the room.