Installation foam is an excellent, inexpensive and very convenient sealant in work, which has found the widest application in construction and repair. It is easily and quickly applied, quickly freezes. But at the same time, it is very susceptible to moisture, changes in temperature and sunlight, therefore it necessarily requires the use of additional protective measures, without which it will soon begin to collapse. And the appearance of this material is far from aesthetic.
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So, the installation foam should be sealed, hidden, masked. And first you need to cut all its excess so that the surface is as flat as possible. This is done with a sharp knife, you should definitely use gloves so that the skin of the hands is under protection.
Usually the installation foam is protected and masked by putty for external work. The solution is made according to the instructions on the packaging of the material, there is no need to do a large amount of sealant at once, it quickly dries up. It is better to make another portion if necessary.
The putty solution is applied to the location of the mounting foam, leafed with a trowel with a knife. A layer of solution should be made as thin as possible, not thicker than a few millimeters, otherwise the sealant will crack when drying out. Then it remains only to wait for the complete drying of the sealant and, if necessary, continue finishing work by plaster, painting and so on, without worrying about the quality and appearance of the mounting foam.