Montaža Lukova i Zakrivljenih Okvira

Detaljan korak-po-korak vodič za spajanje polukružnih lučnih segmenata sa ravnim fasadnim šovnama i lepljenje bez zazora.

Montaža poliuretanskih polukružnih lučnih okvira omogućava brzo i savršeno uokvirivanje zakrivljenih otvora uz upotrebu fabričkih segmenata i strukturnog lepka.

Potreban Alat za Montažu

Step 1: Surface Inspection and Preparation — Ensure the substrate is clean, dry, level, and free of loose dust or oil. Duration: 15-30 minutes. Common mistake: Applying polyurethane adhesive over unstable plaster or damp wall surfaces, causing bond failure.
Step 2: Arc Template and Radius Measurement — Measure the span and height of the archway, then trace a 1:1 scale template on cardboard or directly on the wall to guide segment placement. Duration: 30-45 minutes. Common mistake: Relying on estimates instead of measuring multiple arc points, leading to visible gaps between profile segments.
Step 3: Miter Cutting and Segment Dry-Fitting — Cut the polyurethane arch profiles at precise 45-degree miter angles using a fine-toothed saw, then dry-fit all segments against the marked template. Duration: 30-60 minutes. Common mistake: Cutting without verifying the correct angle orientation for curved profile geometry.
Step 4: Adhesive Application and Profile Placement — Apply continuous beads of polyurethane (PU) assembly adhesive along profile contact surfaces and joint faces; do not use silicone. Press segments firmly onto the wall substrate. Duration: 20-40 minutes. Common mistake: Using silicone sealants, which leads to joint separation and failure.
Step 5: Mechanical Anchoring with Screws — Drill pilot holes through the polyurethane profile into the wall substrate and drive screws into wall plugs every 300-400 mm along the arc. Duration: 30-45 minutes. Common mistake: Omitting mechanical fasteners and relying solely on adhesive bonding.
Step 6: Joint Puttying and Sanding — Fill screw countersinks and profile joints with specialized putty. Allow it to dry completely, then sand smooth using granulacija 180-220 sandpaper. Duration: 45-60 minutes (excluding drying time). Common mistake: Using coarse sandpaper that gouges the factory-primed polyurethane surface.
Step 7: Primer Touch-Up and Final Painting — Apply an optional touch-up primer over sanded joints, followed by two coats of UV-resistant paint for exterior projects or quality interior paint. Duration: 1-2 hours. Common mistake: Applying non-UV resistant paint outdoors, resulting in discoloration and weathering.

Korak 1: Priprema Zida i Provera Radijusa

Lučni deo fasadne špaletne se otpraši. Lučni segmenti se prislanjaju na suvo radi provere savršenog poklapanja radijusa sa otvorom.

Korak 2: Lepljenje Lučnih Segmenata

Lepak montažno lepilo na bazi PU se nanosi na poleđinu luka u neprekidnoj liniji i segmenti se pritisnu na fasadni zid. Vreme sušenja iznosi oko jedan sat.

Korak 3: Spoj sa Vertikalnim Lajsnama i Ključnim Kamenom

Ravne lajsne standardne dužine 2400-2440 mm seku se pod 90° i spajaju na donjim krajevima luka. Na temenu luka postavlja se ključni kamen.

Korak 4: Kitovanje, Šmirglanje i Završno Bojenje

Svi spojevi se popunjavaju elastičnim kitom i šmirglaju sa granulacija 180-220. Nanosi se fasadna akrilna boja preko fabričkog prajmera beli jednokomponentni akrilni prajmer.