All buildings, whether large or small, require the design and implementation of openings on most of their outside walls for potential doors and windows. These days, more often than not, during the construction, these holes are marked with PVC-U strips as the walls are built around them. The strips provide an airtight seal that stops hot or cold air from escaping or coming into the building. By avoiding this wasteful exchange of gas, other physical problems can be avoided, like the buildup of damp, causing mold and mildew to spread through internal walls and seriously ruin them.

PVC-U is obtained from old door and window frames that have been removed from buildings. The elements of these frames are extracted and the PVC-U is completely purified and recycled into weather-, damp- and leak-proof cavity seals. They are hardy and last a lifetime, so any worries about draughts and damp getting inside are a thing of the past. The PVC-U closers will fit into almost every door and window type, are flexible and are very easy to install. They require no extra materials or insulation and maintain installation flexibility on window fixtures.

Choosing the right type of seal is dependent upon the requirements of the structure being built. They are all made with recycled PVC-U, but have different properties. Among many purposes are the basic PVC-U cavity sealer; the insulation sealer – made with a tightly packed block of insulating material; the anti fire sealer – made with a flame retardant and also coated in a fire deterrent aluminum barrier. There are also strips designed to be fitted after the completion of a building; temporary fire deterring barriers that fit between inside wall gaps, giving about an hour of flame protection to inner walls; and ventilation strips that allow maximum … Read the rest