In Houston, TX, the darkest legally allowed must not surpass a net reading of 25% for your front two windows. Therefore we recommend using a 30% window tint as this will read slightly above 25% once it is combined with the glass. The rear windows are exempt from any restrictions as long as the vehicle is equipped with rear view mirrors. Use our FREE Virtual Tint Simulator! We offer a free tint simulator software for you to use to simulate what your exact vehicle will look like with different types of window tint. Go to our menu on this page and select "View Tint Simulator".