POLYURETHANE

Peripherals and auxiliary: It is important to evaluate and check the status of drains, walls, facades
encounters, other next buildings, etc.. to proceed to completion before the application of
waterproofing DESMOPOL membrane.
Superficial cohesion: during the restoration of tiled roofs, removes all unattached tiles and replace
them to keep a flat structure deck, you must also check that the grouting of the tiles is properly
executed. If there are previous waterproofing systems should be checked for adherence and remove
them in case of being in poor condition. Important: If applied to thin bricks are required placement of a
geo-textile mesh to reinforce the waterproofing membrane.
3 Primer use
In most cases it is recommended to use a bi-component polyurethane primer as PRIMER-PU 1050 to
give better adhesion and to prevent bubble formation.
It should be applied by brush, roller or spray equipment (airless), and if necessary a light dusting with
quartz sand from 0.3 to 0.8 mm to increase adhesion and mechanical fixation of the next system
element.
It is essential that the surfaces are in good condition, and fully cured for 28 days (DTU 21 and norm NF
EN 206-1). It must have a low vapour transmission (less than 3 lb/24/h./1.000 ft / 2 test method
RMA).
7
4 DESMOPOL membrane
DESMOPOL can be applied with spray equipment or manually.
In both cases the application must be done uniformly. Although it
can be applied during a cold, wet weather, it is preferable that the
temperature is between 5 ° C and 35 º C and relative humidity
does not exceed 85%. In case of use of spray equipment, it must
be capable of supplying pressure of 280 bar (4000 psi). In manual
applications simply require the use of brush (brush), roller or
squeegee.
5
Finishing layer (optional)
Once the application of DESMOPOL membrane is made, and preferably before 76 hours from its
application, it is advisable to spray one or two layers of aliphatic polyurethane top-coating membrane
as TECNOTOP 1C, to obtain a perfect finishing and to ensure the stability of the desired colour.
TECNOTOP 1C is also needed on surfaces that require resistance to traffic and to waterproof
surfaces that require resistance to chemicals.
LIQUID POLYURETHANE MEMBRANE