bituminous membrane ARCO is a waterproofing membrane obtained from
oxidized asphalt and inert materials. The membrane is reinforced by a
non–woven polyester (P), or glass fiber tissue (V) .The upper surface
of the membrane is protected by polyethylene film (F) Alternatively
quartz sand can be used.
The lower surface of the membrane ARCO is protected by a plastic film easily torched.
PHYSICAL AND CHEMICAL CHARACTERISTICS
- good tensile strength and elongation
- tear resistant
- resistant to static loading
Glass fiber tissue
- excellent dimensional resistance
roll dimensions are 10m long and 1m wide (other rolls dimensions are
available on request).The rolls are supplied on wooden pallets and are
held in position by a heat shrunk plastic bag.
INSTRUCTIONS FOR USE
The surface must be smooth ,clean and dry ,free from dust,oils , grease and other debris
surface is then treated with bituminous primer (EXTRALAC PRIMER at a
consumption of 0.2-0.25 kg/m²) or with elastomeric bituminous primer
(ELASTOLAC at a consumption of 0.3-06 kg/m²) and allowed to dry at
least for 24 h before the application of the membrane.
an alternative bituminous emulsion EXTRACOAT can be used at a
consumption of 0.5-1 Kg/m² or EXTRACOAT RUBBER at a consumption of
The membrane is unrolled on the dry primer coating and aligned before it is rolled back.
membrane is unrolled again while the lower surface is heated and
especially the primer by means of a propane gas torch, until the
polyethylene film starts to melt, ensuring the adhesion of the
membrane to the substrate.
laps must be at least 10 cm and end laps 15 cm. When the bonding of the
roll is completed we torch the overlaps taking care not to weaken them
by extreme heating and by means of a trowel we press to achieve good
bonding.If we want to strengthen up the overlaps or other sensitive
points on the roof (ventilators,drains,upstands,etc), we can apply
bituminous sealants Masticgum No1 or Masticgum No2 (for horizontal or
vertical surfaces respectively) which should prodect from sun radiation
with one or more layers of bituminous aluminium paint ALUCOAT.
a multi layer system the first layer can be applied as loose laid,
partially attached or fully adhered. The subsequent layers must always
be fully adhered.
the application care must be taken so that the overlaps of the
subsequent layers to not coincide with the overlaps of the previous
Technical Specifications →