Plaster corners - these tips have professionals for you

With a little skill you can also plaster yourself. However, corners are always a problem when plastering. What tricks and recommendations give professionals, and how to do it properly crafted, you can read in this post.

Use corner rails

Cleaning a corner clean is impossible without corner rails.

Corner rails are special steel profiles made of galvanized (important!) Steel sheet. The outer edge of the plaster rails is smooth. To the left and right of the actual edge is a strip of plug metal, which is perforated diamond-shaped. Corner rails are always clearly visible.

Corner rails for outdoor use

When it comes to plastering an external wall, it is essential to use suitable corner rails for this purpose. Its outer edge is specially coated weatherproof.

Corner rails without this coating (as intended for indoor use) must not be used on the outside. No weatherproof plaster can protect the rails from corrosion. By corroding the corner rails, the plaster can fall off on large areas, heavy structural damage can be the result.

Do not clean too thick

The plaster application should never be too thick. To ensure this, professionals use so-called cleaning strips. These plaster strips are attached to the wall, between them, the plaster with a grape box in the desired strength (as they specify the cleaning strips) deducted.

The basic rule is that when plastering the corner, the corner should remain visible and not too thick to be plastered. This requires experience and practice in order to get a plaster job in exactly the right thickness at the edge, so that the edge is plastered, but the corner remains visible. But there is no exact instructions for this.

Smooth the plaster only after putting it on

Smoothing plaster should always be done only when it is lightly "dressed". Even the compaction of the plaster takes place only after putting on. If the plaster has become too dry, you can moisten it again with the help of a quast again.

When smoothing, the trowel should always be kept as flat as possible. This results in a clean result. If the trowel is kept too steep, the surface is not clean and even.

Cleaning strips, cleaning gauges and cleaning hooks are important tools that should not be left out when self-cleaning. How to use them properly, is best shown by a professional. In general: Always attach cleaning hooks in a mortar joint.

Tips & Tricks

Corner rails are always fixed with mortar bales at a distance of about 50 cm. To press the corner rails, it is best to use a long aluminum rail. Be sure to use the spirit level when pressing on, so that the corner rails are really vertical!

Video Board: DrywallTape Perfect Inside Corners Every Time