In order to avoid freezing of the wall, timely sealing of interpanel seams with special sealing agents is necessary. In case of deeper damage to the seam, a major overhaul of the panel joints is required.
In panel houses, during major repairs, they are engaged not only in the roof, but also in the sealing of interpanel seams.
Their sealing is an important technological process.
Over time, joints and seams in panel houses can begin to deteriorate, resulting in the formation of mold and mildew.
The walls begin to freeze and the apartment gets cold. To avoid this, and it is necessary to seal the seams.
Depressurization of interpanel joints of seams occurs for the following reasons:
The interpanel seam is insulated with self-adhesive tape and mastic. According to their characteristics and field of application, these materials can be divided into different brands.
The base for the mastic and the tape is a special sealant, which retains heat and protects the joints of the board.
The best composition of the sealant is foamed polyurethane. It does an excellent job of protecting seams from mold and mildew.
After all, it is because of these harmful factors that the seams are destroyed, and as a result, the walls freeze through in winter.
There are several types of sealing of interpanel joints in panel houses:
Let's consider these types in more detail.
Carry out immediately after the completion of the construction of a new house.
Seams of new buildings are processed in three stages:
The result is a warm seam, that is, not only heat-insulating, but also waterproof.
It is carried out 5 years after the house was commissioned.
Sealing is carried out over the old layer with a new layer of sealant.
The level of secondary processing will depend on the state of the interpanel seam. For example, in case of a minor violation, it will be enough to apply one layer of mastic.
In case of deeper cracking with damage to the insulation, it will be necessary to clean the entire seam from old materials.
After that, a full-fledged joint is required as with the first sealing.
The rules for sealing seams are as follows:
When carrying out repairs, the sealant in the seams is subjected to compression and tension. Therefore, the sealing layer must be made half the size of the joint between the plates.
Seams in panel houses must be properly sealed to avoid cracking in the future.
Therefore, when repairing interpanel joints, high-quality preliminary work with the seam is needed.
Below we will consider in detail the repair of the seam with its cleaning and preparation:
Polyurethane foam for filling interpanel joints expands during application, so do not foam the seam too abundantly.
The seams of a panel house can be cleaned manually or mechanically.
Before starting work, be sure to visually inspect all the joints of the panels. They must be dry and intact.
It should be laid on a layer of not yet frozen foam.
The diameter of the insulation should be 30% greater than the seam width.
The insulation tube is placed in the seam without rupture so that there is room for sealing the seam with mastic.
This completes the sealing of interpanel seams!
Note also that the seams must be sealed in dry, clear weather at a certain temperature regime, from -10C to + 30C.
Sealing at the level of the second floor and above is performed only by specialists who have passed mountaineering training.
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Posted By: Work Style |06, Nov 2020
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Posted By: Work Style |06, Nov 2020