To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Roof is definitely not waterproof. I can see it dissolving after a few weeks of being in the sun. It is like a very thin enviro material. I will need to spend more money to apply a better seal. Overpriced. Wish I had more time to purchase something local.