Window Installation


Windows in a commercial or residential property can be important for aesthetics, safety and energy efficiency. The location, type, size and number of windows affects air movement and access to light in the home.

Understanding the type, function and condition of the windows before you move in can help determine what maintenance might be necessary in the future. A representative number of the windows on both the exterior and the interior of the home will be checked. On the exterior, the inspector checks the overall condition of the windows, including the presence or absence of a sealant-like weather stripping or caulking.

Inside, the inspector will check window operation. The inspector will also look for the presence of screens or storm windows and breaks or cracks in the window panes. If conditions allow, the inspector will assess thermal pane windows for evidence of problems with the seal.

For more information on windows, contact National Property Inspections.

Be Advised

Moisture on Window

Condensation on the inside of window glass or the inside of storm windows can be a minor inconvenience or the signal of a larger ventilation problem. Window condensation is caused when warmer air comes in contact with the cooler window surface. Warmer air is capable of carrying more invisible moisture particles than cooler air. When the warmer air hits the cooler surface, the moisture falls out of the air and sticks to the window. Sometimes, it can even form ice which then melts and streams down the window.

Sharp temperature changes in the fall cause this type of condensation for a few weeks. Condensation is also more prevalent in the morning hours. Condensation that evaporates off the window in a few hours is little cause for concern. Condensation that becomes ice, runs off the window and pools along wooden frames or wood trim can eventually damage the wood surface, causing rot or mildew to grow.

Both older and newer homes can experience severe window condensation problems – older homes because there is too much ventilation to the outside at the windows, and newer homes because there isn’t enough. Balancing moisture levels inside the home is the key. To do this, you can limit the sources of moisture inside the home, reduce moisture levels through proper ventilation or dehumidification or raise surface temperatures.

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