Crack screed: add that to not cracked? Stealth plugging cracks, spalling in concrete

Before finishing flooring is necessary to make high-quality tie that is not cracked, flat and smooth. It so happens that the screed cracks and deforms over time.

How to avoid that added to the solution than repaired - talk today.

If after drying concrete mortar cracks, do not be upset. All fixable. First you need to locate and identify all cracks, chips. Cracks usually do little more (a width of about 1-2 cm.) Grinder or a hammer. Remove the dust and debris collected. In obtained crack can put the metal wire. Filled cracks in the usual adhesive for tiles or grout.

If defects in excess of 35% of the total area, it is better to dismantle and make screed floor again.

How to prevent, to strengthen the tie?

Cracks do not appear to have to do screed not less than 30 mm thick. Even high-quality reinforcement can not give a guarantee against cracking. Cracks may occur from improper drying a solution or if the room drafts.

A lot depends on the coating on which to go to the screed. If it is cracked, then screed after drying may crack at these locations. Moisten screed about 3 days with water. If possible, lay still on top of the film. This will make a more solid tie.

Cracks in the coupler may be of the - not for correct installation of beacons, adding excess water, without proper care.

What added to the solution, so that no cracks?

The simplest thing you can offer - PVA diluted with water and added to the solution. A glass of PVA per bucket of water.

There is a sale a huge number of any additives. For instance, Fiberfleks. This addition will make the tie stronger, provide better grip and resistance to chemical environments.

It is a means for less - softener Escaudain-P80. Proportions: cement bag in 75 grams of plasticizer. Screed obtained without cracks, delaminations and can produce finishes in 10 days.

Proportions screed: gravel, cement, sand (6: 1: 4). If you decide to make the reinforcement, it is necessary to put the grid at the surface. Be sure the damper tape around the perimeter of the front of the screed.

Many masters are advised to use krupnofraktsionny peskobeton. The price of the bag 150 rubles.

Repair cracks produce Self-expanding cord. Placed freely cord into the gap. Apply polyurethane sealant on top and smooth the surface.

To close up the gap will elastic sealant. It is used for small cracks. look as a sealant to close up cracks.

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