Thank you for your interest in Martinelli’s Home Improvement & Supply Company. If you have a question that has not been answered by our FAQ’s please use the form at the bottom of this page to submit your question. We will do our best to return an answer to you as promptly as possible.

  • What color combinations are available for siding and windows?

    There are many color combinations offered to meet customer interior and exterior preferences. Depending on the style and manufacturer you choose we can show you the customized palette they provide and also check to see if they can custom create a color to match your specific need. For a fun way to see siding colors – you can launch an online Design Showcase.

  • How can I get SMUD financing?

    Just give us a call and we can provide you a bid for services. Take that bid to SMUD and request financing. We are a certified SMUD contractor. Once you are approved, we begin the work. It’s as simple as that! [more info]

  • How do I pay you for the work you provide?

    Payments are made COD. Once we complete the contracted work we are paid COD by either check, MO, Cashiers Check, Cash, or credit card. SMUD financing is handled through SMUD and there is no cash out of pocket.

  • What is a U-value?

    Ultimately it shows its insulating ability. A U-value indicates the rate of heat loss of the window. It calculates air infiltration and water infiltration If the U-value is low, the greater a window’s resistance to heat flow and the better its insulating value.

  • What does R-value mean?

    An R-value shows the resistance to heat flow at areas within the window. A high R-value will lose less heated (or cooled) air. This in turn will help with your energy bills.

  • What is Low-E glass?

    Low-E (low-emissivity) treated glass is made up of millions of tiny metallic flakes that bounce the heat back to the heat source, while still allowing the light to pass through the glass.

  • What are the benefits to replacing my windows?

    New windows are custom built to fit, they are made with consistent strength and color retention. They typically hold a lower U-value than other older duel pane windows due to advance technology. They will help with many nuisances, such as; noise, outside pollutants, moisture, mold, and even warping. See more about this in our articles on replacement windows, improving your homes energy, and resale renovations.

  • How long does the installation process take to replace my windows?

    The duration of each window project varies due to the amount of windows, but typically is done within one to two days. See article on “what to expect…

  • Do you give free estimates?

    Yes, we give free estimates throughout the Sacramento, Placer area.

  • What do you do for me when you come out on a free estimate?

    We will check all your windows and offer suggestions on improving your situation. We will show you options available to you and give you pricing on your selections. We will answer any questions you might have at the time we come out as well.

  • How do I know if it is time to change out my windows?

    We have created a very helpful checklist to assist you in this process. Please see our 10 point inspection.


If we have not been able to answer your question(s) for you, please submit a specific question below and we will do our very best to answer it thoroughly and promptly.

We will contact you within one business day.

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