Pinhole Guide

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Often times hotel brands require window treatments to have blackout capabilities, which creates privacy and a more comfortable experience for guests.

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Manufacturing a blackout involves coating a fabric with layers, or ‘passes’, of aerocellular acrylic foam. A 2-pass blackout is produced by applying two layers of foam to the fabric, while a 3-pass blackout will receive 3 layers of foam.

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Pinholes are needle size spots where a transfer of light occurs. They are not large holes or scratches and they do not increase in size without physical or mechanical damage. Typically pinholes cannot be seen unless a bright light is shone through the curtain.

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Pinholes are inherent to coated fabrics and can occur at random. Having multiple pinholes throughout seam lines or linearly across the treatment should not be considered standard.

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Do I have a pinhole problem? As a guideline, having three or less visible holes, from a viewing distance of 5-8 feet, is considered acceptable.

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In certain cases, a pinhole can be fixed by patching the area with a small amount of acrylic foam. Large areas of light or an abundance of holes are typically deemed replacement candidates over repairing.

Callie England