Construction of waterproof coatings in low temperature environment

Most of the home decoration materials are water-based, and many owners will have questions.

1.

Dry powder products are easy to absorb moisture, and most liquid products are easy to freeze and freeze at low temperatures

1.

2.

2.

The answer is yes!

For waterproofing in winter, it can be constructed as long as the room temperature is not lower than 5 °C

3.

construction environment

1.
The construction environment temperature should be higher than 5℃, and it is recommended to suspend the construction when the construction temperature is lower than 5℃;

2.
Stop work 24 hours before the arrival of the cold wave, and do not work on icy or frosted surfaces;

3.
It is not suitable for construction when the ambient temperature is lower than 5℃ for 48 hours
.
If it is indeed necessary to construct due to the construction period, the construction time can be arranged between 10:00 and 15:00 in fine weather.
When the construction environment temperature is continuously below 0°C, construction is prohibited
.

base surface requirements

1.
The base surface should be clean, free from cement laitance, oil stains and other debris, clean the concrete base surface, so that the waterproof layer can be closely combined, which is conducive to the penetration of the coating, so that the coating and the base layer have good bonding strength;

2.
Check whether there are structural defects.
The honeycombs, holes, cracks on the base surface, and the periphery of the upper and lower water pipes should be filled and smoothed with plugging materials first, and the sharp protrusions should be removed
.
Before construction, the base surface should be fully moistened with water, but it is necessary to ensure that the base surface is free of clear water.
It is best to wet the base surface for one section in winter
.

construction process requirements

1.
Proportion the product according to the proportion indicated on the package
.
Adjust the viscosity to meet the construction requirements of different parts of the facade and plane;

2.
Use electric stirring for full stirring, try to avoid the slurry from being wrapped in air during the stirring process, and the stirred liquid material should be a uniform slurry without powder mass;

3.
The paint should be brushed on the base surface that is fully wet but without clear water.
Pay attention to avoid brushing.
When the previous coating has a certain strength, the next coating should be applied;

4.
It is recommended to use glass fiber mesh cloth for reinforcement treatment at large gaps on the base surface, cracks that are easily deformed, and joints of upper and lower water pipes;

5.
In order to avoid delamination, hollowing and falling off between the two waterproof layers, the surface of the previous coating should be confirmed to be dry, free of oil stains and floating ash, etc.
, and then the second waterproof construction should be carried out
.

Construction of waterproof layer in kitchen

coating maintenance

The maintenance of the waterproof layer is generally to allow the coating film to cure and react to form a film during the drying process.
The longer the curing time in indoor conditions, the more thorough the reaction of the waterproof layer will be, and its strength will be relatively better
.
The curing time is generally not less than 48 hours, but the curing time should be appropriately delayed in places with low temperature or poor ventilation in winter
.

The closed water test can only be carried out after the coating is cured until it is completely dry and has sufficient strength.
After the waterproof layer has passed the acceptance, it should be protected and isolated in time before construction to avoid damage to the coating caused by the subsequent processes
.

closed water experiment

Summary: For waterproof construction in winter or in a low temperature environment, you must master low-temperature construction skills.
Each waterproof construction process should strictly follow the requirements and standards, and be meticulous and keep improving!