|
What is R-value? |
|
• is a measurement of the resistance
to heat flow
• the higher the value, the better the materials insulating value
• is expressed as the reciprocal of the materials thermal conductivity. |
| |
|
|
|
What is P.I.R ? |
|
|
• Is a modified Polyurethane based foam insulating
material known for having an excellent R-value
• superior performance in fire tests
• as the only foam insulation product for direct application to steel deck
to earn FM approval for Class I Roof System
• having been classified by UL for use in roof system with direct-to-steel
application of foam plastic insulation under both single-ply & asphalt-based
roof coverings.
• it’s cost effective since it be can installed directly to the
steel deck
• having no need to place thermal barrier |
| |
|
|
|
What is thermoplastic, thermo set materials? |
|
|
• Thermoplastic materials are softens & melts
when exposed to an elevated temperature, thus resulting
to lose its insulating capacity.
• Thermo set materials are rigid, does not soften, melt or flow, & remain
strong even at elevated temperature, thus, will not lose its insulating capacity. |
| |
|
|
|
Is P.I.R a thermo set or thermoplastic? |
|
|
• P.I.R is considered a thermo set insulation
material. |
| |
|
|
|
What is the effect of Ultra Violet Light
to P.I.R? |
|
|
• The P.I.R when exposed to that rays has
no effect since the facers protect the foam from
UV degradation. |
| |
|
|
|
How does Moisture affect an insulation
material? |
|
|
• Moisture affect the insulation in the forms
of water vapor or liquid water, but the real enemy
of the insulation is water vapor that passes into & condenses
leading to decrease of the overall thermal performance
of the insulation. |
| |
|
|
|
What is the effect of Water Vapor to P.I.R? |
|
|
• P.I.R insulation with its foil facings & closed
cells provide excellent water resistance that doesn’t
let the water vapor to penetrate. |
| |
|
|
|
What
is the difference between P.U & P.I.R? |
|
|
• P.U are produced as a result of chemical
reaction of polyol, isocyanate, blowing agent, catalysts, & surfactants.
The amount of isocyanate used is usually 105% that
exactly matched the chemical equivalent of the polyol;
it needs a thermal barrier such as perlite to pass
the rigorous Calorimeter Fire Tests.
• P.I.R can be produced with no polyol using only isocyanate, catalysts,
blowing agents & surfactants; with this the isocyanate reacts with itself
to form a highly cross-linked thermosetting polymer with a ring-like structure. |
| |
|
|
|
What is the effect of Construction Materials
in P.I.R? |
|
|
• Petroleum based solvent in adhesives, paints,
stains, water repellent, preservatives coatings & bituminous
waterproofing has no effect in P.I.R. |
| |
|
|
|
What is the Fire Test performance of the
P.I.R? |
|
|
• The P.I.R is the only foam plastic insulation
product to have approval for direct steel deck application
from both FM & UL, FM approval for Class I Roof
Systems was granted for passing FM 4450 & UL
Classification by passing ANSI/ UL 1256. |
| |
|
|
|
What is the Tunnel Test? |
|
|
• It is the ASTM E84 Standard Test Method
for Surface Burning Characteristics of Building Materials
that assess the spread of flame on the surface of
a material. |
| |
|
|
|
What is the Tunnel Test performance of
the P.I.R? |
|
|
• Since P.I.R is a thermo set material it
stays intact during the fire exposure & successfully
remains in place during the testing, thereby meeting
the necessary ratings dictated by the building codes. |
| |
|
|
|
What are the benefits of the insulation
having the highest R-value? |
|
|
• Reduces utility bills.
• Thinner walls & roofs with shorter fastener.
• Less change in building dimensions to meet a determined R-value.
• Immediate cost savings caused by a reduction in materials & labor. |
| |
|
|
|
Why do we have to use P.I.R insulation
in our facilities? |
|
|
• Superior R-value & thermal performance
• Moisture resistance & water
repellent
• Extensive building code approvals
• Cost effective insurance ratings
• Unaffected by commonly used construction adhesives & solvents
• Excellent fire test performance
• Dimensionally stable
• Preferred compressive strength
• Building code conformance |
| |
|
| |
|
