Laying underlayment foil in Sofia
Roofing · Sofia
Complete or partial installation of under-roof membrane
Frequently asked questions
What is the main function of the underlayment?
The main function of the underlayment is to protect the roof structure and interior spaces from moisture, snow, and dust penetration, while at the same time allowing water vapor from the interior of the building to escape to the outside. This prevents the formation of condensation, mold, and damage to the wooden elements.
Is it mandatory to install a roofing membrane on a new roof?
The installation of an underlayment is highly recommended for any new roof construction, as well as for major roof repairs. It provides additional protection and significantly extends the life of the roof structure, which in the long run saves money on future repairs.
Can underlayment be installed on an existing roof?
Yes, it is possible to install underlayment over an existing roof, but it usually requires partial or complete removal of the roof covering. This is most often done during a complete roof repair when there are problems with leaks, missing underlayment, or worn-out waterproofing.
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