Montaža Fasadnih Šovni: Vodič Korak po Korak
Detaljan korak-po-korak vodič sa alatima, vremenima sušenja i savetima za pravilnu i trajnu montažu fasadnih šovni oko prozora.
Pravilna ugradnja fasadnih šovni od poliuretana garantuje višedecenijsku postojanost bez otvaranja spojeva i štiti prozorske otvore od prodiranja vode.
Potreban Alat i Materijal
- Step 1: Surface Inspection and Substrate Preparation — Inspect the exterior wall substrate around windows and doors. Clean all dust, loose plaster, grease, and moisture. The mounting zone must be completely dry and structurally sound before applying adhesives. Estimated Duration: 30-45 minutes per window opening. Common Error: Attempting installation over damp or dusty brickwork, which prevents polyurethane adhesive from bonding correctly.
- Step 2: Precision Measuring and 45-Degree Miter Cutting — Measure the perimeter dimensions of the window frame. Transfer measurements to the polyurethane profile and perform exact 45-degree miter cuts at corner intersections using a fine-tooth miter saw. Estimated Duration: 20-30 minutes per profile sequence. Common Error: Using coarse saws or guessing corner angles without a miter guide, causing wide gap errors at joint corners.
- Step 3: Polyurethane Adhesive Application — Apply continuous strips of high-grade polyurethane (PU) assembly adhesive along the rear bonding channels of the profile and along the mitered joint edges. Silicone must never be used. Estimated Duration: 10-15 minutes per length. Common Error: Using standard silicone or applying spot-dots of adhesive instead of full continuous beads along the profile back.
- Step 4: Positioning and Mandatory Mechanical Fixing — Press the polyurethane trim firmly against the wall substrate in alignment with reference marks. Secure the profile mechanically by driving stainless steel screws and wall anchors through the face of the molding into the substrate at 40-50 cm intervals. Estimated Duration: 15-20 minutes per profile piece. Common Error: Omitting mechanical anchors and relying solely on glue, which leads to profile slippage during wind load or expansion cycles.
- Step 5: Joint Filling and Sanding — Countersink screw heads below the profile surface. Fill screw holes and miter seams with flexible exterior joint putty. Once cured, sand all filled areas smooth using granulacija 180-220 sandpaper. Estimated Duration: 30 minutes (excluding curing wait time). Common Error: Using coarse sandpaper (below 120 grit) that scratches the smooth factory-primed profile surface.
- Step 6: Primer Verification and UV Paint Application — Verify the joint filler is smooth. While additional primer application is optional over factory-primed surfaces, apply two full coats of UV-resistant exterior masonry or acrylic paint across all installed profiles. Estimated Duration: 1-2 hours drying time between paint coats. Common Error: Painting with interior-grade paint or non-UV resistant paint, causing premature fading and surface weathering under sunlight.
Korak 1: Priprema Podloge i Obeležavanje
Fasadni zid oko otvora mora biti čist, suv i otprašen. Laserskom libelom iscrtavaju se precizne vođice na rastojanju od 1 do 2 cm od ivice prozorskog štoka.
Korak 2: Sečenje i Nanošenje Strukturnog Lepka
Profili standardne dužine 2400-2440 mm seku se u vođici pod uglom od 45°. Lepak montažno lepilo na bazi PU se nanosi u neprekidnoj talasastoj liniji duž zadnje strane profila i na čeone spojeve.
Korak 3: Postavljanje, Kitovanje i Šmirglanje
Profili se pritisnu uz zid. Nakon sušenja lepka od oko jedan sat, spojevi se popunjavaju elastičnim kitom i fino šmirglaju sa granulacija 180-220 do savršene ravni.
Korak 4: Završno Bojenje sa UV Zaštitom
Preko belog fabričkog prajmera beli jednokomponentni akrilni prajmer i obrađenih spojeva nanosi se 100% akrilna ili silikonska fasadna boja u dva sloja.
Česte Greške koje Treba Izbegavati
Nikada ne koristite običan silikon umesto konstrukcijskog lepka montažno lepilo na bazi PU i nemojte farbati pre nego što lepak potpuno veže (oko jedan sat).
