How to put a barrier for moisture?
Rigid sheet waterproofing
the simplest, but not the most effective and not cheapest method of a waterproofing.
It is metal or polymeric sheets, with rigid fastening to building constructions by means of welding or fixture. Actually, the majority of roofs are an example of such waterproofing from an atmospheric precipitation.
The protection rolled These materials to us are also perfectly familiar to
. And it is not surprising. They were often used in the buildings built during the Soviet period. It is roofing material, roofing felt, paper roof covering. Isn`t that so, familiar names? The Okleechny waterproofing as prompts us its name, put, pasting on a basis in one or several layers of rolled and film materials.
These materials are, as a rule, not strong, not waterproof, easily rot. All this creates the increased difficulties at installation of a waterproofing: material should be stacked on the dry basis grounded by a bituminous emulsion, roughnesses of a basis should not exceed 2 mm. And bituminous materials, as we know, become fragile on a frost. Other essential shortcoming - durability of a bituminous waterproofing does not exceed 5 - 6 years.
The Okleechny waterproofing of new generation is made of synthetic materials (fiber glass fabric, polyester, polyethylene, rubber) and the bitumen modified by polymers. New materials (izoelast, Moscow top flippers, bikroplast, tekhnoelast, rubiteks, stekloizol, etc.) much stronger, more elastically and more heatrack.
The polypropylene films having on one party anti-condensation " are interesting; nakatka “ from viscose fiber. High-strength films of the RANKKA, EXTRA, JUTACON trademarks are widely presented at our market.
The reinforced polyethylene films happen punched and nonperforated.
Perforation of films microopenings is necessary for increase of their vapor permeability. Among them it is possible to call the punched reinforced polyethylene films of EUROFOL, JUTAFOL D, ROOF - FLEX, etc. But their vapor permeability is low, and decreases in process of operation.
A nonperforated film of trademarks Paroizol, JUTAFOL N, ROOF - FLEX is more reliable.
Membranes, which “ breathe “
the New word among rolled and film waterproofing materials are “ breathing “ membranes. They interfere with access of external moisture, but remain permeable for an exit of water vapor. As a result the moisture disappearing from the room is not condensed under a cold roof or facing material. At the market there are several trademarks subroofing “ breathing “ membranes: TYVEK, DIVOROLL, JUTAVEB.
Besides hydroprotection, “ breathing “ membranes allow to save heat.
For creation of waterproofing screens around the bases of buildings long since use clay. This material is cheap and available. For achievement of the necessary effect it is enough to create a layer of the condensed clay 40 - 50 cm thick Besides, clay as if clogs up pores in concrete, and it becomes conditionally impenetrable.
The bentonite waterproofing is more progressive. Bentonite clay is the tonkoizmelchenny kind of clay possessing pronounced colloidal properties. Ukraine gets it in hundreds of thousands of tons per year. The layer of bentonite only 1 - 2 cm thick is concluded between sheets of a cardboard or geotextiles. Sheets with an overlap lay over the base. At contact with soil moisture bentonite inflates and turns into gel with extremely low water tightness.
To services of consumers on sale there are waterproofing panels and mats of Bentomat, Nabento, Rawmat HDB, Volclay and Voltex.