First Master determines how much you can reduce this type of ventilation ducts (duct) in height and width. The spirit level is counting boxes duct. Then makes an incision in the outer wall of the ventilation duct air duct, followed by dismantling. Exactly the same operation and doing is the inner part. Then installed divider (usually from a dense cardboard) for the passage of air flow and the rest of the ventilation duct be filled with osb (which In our opinion the best stuff), the gcr or foam blocks (material cost is usually included in the cost of works). After completion, the wizard must check for ventilation.

Some advice for the customer reduce the ventilation duct in the kitchen: Before the advent of the master must close the film all the kitchen furniture and utensils clean – the dust will be a lot even if you use an industrial vacuum cleaner, as practice shows -Sense from this virtually nothing. Although some "experts" offer such a service, while increasing costs. The average price for reducing duct in the Moscow region: gipsolitovogo duct 8.12 t.r. (In Depending on the type) to reduce the cost of the concrete duct 12-14 tr. If the price is less-is to think about the qualifications of those "masters". 2.Vtoroy when you want to restore previously reduced airway – a sale, or privatization of apartments at registration certificate from the bti. Three – four years ago with the staff of this organization has as one might have to agree, at the end of 2009, th, due to tighter construction and maintenance rules and regulations, it has become virtually impossible (well hypothetically possible, but it is cheaper to pay for reconstruction).

Restoration of the duct (a duct) is not going to have a kitchen this scheme, only on the contrary, including some details: in the first case, when the ventilation is completely disrupted and restoration should be done under the order, the first thing you want to restore ventilation usually is done by corrugated, flexible pipes, tubes and foam blocks 50 mm thick, which are identical to the thickness of the walls the rest of the duct. Restoration of the duct pazogrebnivymi plates (recovery which offers some so-called 'builders') is unacceptable as ventilation shaft! The cost of restoring the duct with a partially or fully impaired ventilation in the Moscow region is 9 – 14 tr, with a cost material. If ventilation is not broken, and restore a duct should be before the arrival of the employee bti, it fits the so-called "fake version, this is where to place a smaller part of the duct exposed guides and lists attached to them osb. The cost of such restoration tr 10/12 Once again, I would like to remind you: in the Moscow region, professionally reduction and restoration of ventilation ducts takes 3-4 firms, and despite on the crisis held a fairly high price for their work, if you will be offered to reduce or repair the duct at a lower price is reason to doubt the qualifications of these "masters".