Yes. Forestar product can take screws just like the way of the wood and it also has better screw retention than wood. It’s just the type of the screw required for each product may varies, so you need to follow the .

You need to pre-drill in just a few instances. For example, when you install the deck, you need do drill in the deck covering area for adapting plastic expansion bolt.

Forestar product applies advanced material design that prevent against cracking, rotting, peeling, insects damaging etc. With proper and recommended care, it will provide rather long years of good performance. You can refer to for details.

The most affordable option (applicable to free draining, relatively dry conditions only) is to use treated softwood. Although softwood substructure will become slimy/moldy easily over time, this is normally acceptable as it is not seen. We can also provide a composite substructure profile which is useful in wet conditions or areas with low air circulation. In particularly damp conditions where the deck is over 1 meter off the ground, we recommend the use of galvanized steel box section beams / hard wood structure or other stronger structure. 

No. Just normal tools are enough, special woodworking equipment is not required.

Forestar product is mildew resistance, however, mold and mildew may adhere to dirt or dust on the surface of the board if it not stored or applied correctly. We recommend to clean it quickly with proper power. In a word, please do not exposed boards to high moisture or sweet environment and keep it dry and clean as best as you can.