Published at Thursday, September 28th, 2017 - 01:41:04 AM. . By Queen Haley.
First, let's look at what they are. Unlike a regular wood or standard UPVC door, composite doors are formed from several materials. The inner section is usually foam for insulation, while for the outer skin you can choose from aluminum-steel, UPVC, or glass reinforced plastic (GRP). The latter material is very popular nowadays owing to its many intriguing properties that make it perfect for use in doors.
Disadvantages: The aluminium doors are not oxidation resistant thus; oxidation appears in them in the either form of residue or pitting. The risk of being corroded always exists with aluminium doors, if certain precautions are not taken from time to time.
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