Your questions – Superbonus, 110% difficult for armored doors and insulation: the reasons
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We have started work on the Superbonus as we are still entitled to 110% and the transfer of credit. Among the planned works is the insulation of the walls overlooking the stairwell and the installation of armored doors. But for these works, the general contractor claims that we can only ask for 50%. Are things like this?
Signed letter — by email
The general contractor is right about the insulation and probably also has it on the armored door. As far as insulation is concerned, to be facilitated with the Superbonus it must concern an opaque dispersing surface, which delimits the air-conditioned volume with respect to the outside, the ground, environments with different temperatures or environments not equipped with an air-conditioning system. Starting from this definition given by the ministerial decree of 26 June 2015, Enea, following a discussion with the Revenue Agency, clarified that the opaque surface delimiting the stairwell cannot be considered a separating surface between a heated space and the external environment or in any case towards unheated environments. It can certainly be argued that the stairwell contributes to dispersing heat and therefore to wasting energy, but we have to deal with reality: the works are financed with the transfer of credit and certainly whoever has to affix the approval will refer to the official interpretation. As far as the second question is concerned, we use the adverb probably because from a formal point of view the armored door can be facilitated as a towed structure, but it must have precise technical characteristics to guarantee, in addition to safety, an improvement in the energy performance of the house. Products with these requirements are very expensive and exceed the eligible spending limits for windows and doors.
With the advice of Gino Pagliuca
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