11,687 views
How to insulate a building? After gluing the polystyrene to the mesh, we need to tighten it with glue and embed the reinforcing mesh. An aluminum corner, usually 250 cm with an acrylic mesh, usually costs 5-7 PLN. Watch out for prices in DIY stores, where the same corner can cost up to 10 PLN more per piece. In a building with a large number of window/door openings, this multiple of 10 PLN can add up to a good amount. The corners are usually asymmetrical, with a 10 cm mesh on one side and 15 on the other, so we can always adjust without having to cut. 0:42 Is it necessary to sand the polystyrene before gluing? The sanding procedure is intended to roughen the surface so that the glue holds better. Polystyrene that has been exposed to the sun for a long time in the summer begins to yellow from UV and such a top layer will not hold well enough without sanding. When joining boards, we will never obtain a perfectly even surface; when lit from the side, the effect of keying can be seen, and therefore the line of joining boards must be sanded so that the joint lines do not show through the glue. 2:01 Installing corners with mesh on polystyrene After preparing the surface of the polystyrene, cutting out the foam overhangs or sanding with a trowel, we apply the first layer of glue to embed the reinforcing mesh. Then we apply the aluminum corner with mesh and press with a spatula to immobilize the corner. We can make the final correction with a spirit level. We apply the second layer of glue to the corner and level it with a flat trowel. Corner with mesh for polystyrene PLN 5 for 2.5 m https://allegro.pl/listing?string=nar... Sanding trowel grater for polystyrene PLN 23 https://allegro.pl/listing?string=pac... Adhesive mortar for polystyrene and mesh 25 kg bag approx. PLN 22 Prices 2022