Saturday, July 23, 2011

Closed-Cell Polyurethane Foam Versus Open-Cell Polyurethane Foam

What is the difference between an open-cell foam versus a closed-cell foam? The open-cell foam has tiny cells that are not completely closed (thus the name "open" cell). This allows air to fill up the open spaces inside the material, making the foam weaker and softer to the touch.

Closed-cell foam, on the other hand, is made up of cells completely closed and packed together. They are filled with a gas that forces the foam to rise and expand which makes it a greater insulator.

Closed-cell foam has a greater R value, is stronger and it has a better resistance to the leakage of air and water vapor. The higher the density the foam, the heavier, or stronger it becomes.

Washington Roofing & Insulation uses BASF Closed Cell Spray Foam that provides an R-value of 6.7 per inch and has a density of 2.0 pounds per cubic foot. For more information, visit our website or contact us at 800.383.3062

Tuesday, July 12, 2011

Benefits of Spray Polyurethane Foam Roofing

Spray polyurethane foam roofing can be applied over many different types of commercial roofs like granulated modified roofs, built-up gravel roofs and metal roofs.

The benefits of spray polyurethane foam roofing applied by a quality, Q1 applicator with BASF Foam Enterprise credentials compared to conventional roofing methods are:

1. No sightly tear off. Less land fill usage.
2. Energy efficient, provides a seamless monolithic insulation barrier. Saves you money on utility bills.
3. High wind up-lift rating.
4. 100% seamless and self flashing.
5. Quick and efficient to install, giving you less time to worry about construction on more time to concentrate on your job.

This is a photo of a built-up gravel roof in need of repair.

Photo taken after Washington Roofing & Insulation
Applied the Spray Polyurethane Foam Roof System.

Spray polyurethane foam roofing systems are warranted from 5,10 to 15 years depending upon the needs and budgets of the customer. The warranties are also renewable after the existing warranty has expired.

Properly maintained, a spray polyurethane foam roofing system may be the last roof you need to put on.

Wednesday, July 6, 2011

Fluid Applied Air Barrier Systems

The primary purpose of an air barrier system is to stop the air from leaking into and out of the building enclosure. Occupants of the building are more comfortable, are provided draft free space and are protected from pollutants entering the building.
When conditioned air leaks out of a building and unconditioned air leaks into a building we must then use additional energy to then condition this air. Air leakage can result in an increased use in energy costs of up to 30-40% in heating climates and 10-15% in cooling costs. (Source Investigation of the Impact of Commercial Building Envelope Air Tightness on HVAC Energy Use). 
Equipment works more efficiently, like HVAC units, and sizing mechanical systems are easier because building owners don't have to compensate for drafts.

Moisture laden air is also barred from entering the building which assists in reducing the corrosion of metals and mold growth.

Washington Roofing & Insulation prepares
a Missouri high school addition with BASF Walltite

Air barriers, especially when used to separate two different environments within a building, can protect one occupant from another occupant's pollutants (such as second hand cigarette smoke), odors (such as cooking odors) and noise (sound delivered by air transport).

Contractors applying air barrier systems should be members of the Air Barrier Association of America which provides ABAA certification and continuing education. For more information, visit the ABAA website or visit us online.