Hello and thanks for you honest review. Although we understand your situation, Advaning does not intentionally mislead any product by omitting any information for installation. We understand that every installation is unique and requires the user to make their best judgement in determining whether the product will work for them before proceeding with a sale. Advaning does provide all users with a general guide for installations which includes the use of outdoor caulking to ensure that the awning installation properly seals against any installation surface but more specifically when the surface is textured. We hope this information is beneficial and encourage any potential user to contact us directly should there be any questions before making their decision. Thank you - Best, Chris L. ADVANING