You’ll be able to buffer the tech (input the Shield button ahead of time) during hitlag too, provided you’re within the 11 frame window, and it’s possible to tech whilst already touching walls and ceilings.

What Is a Smash Bros Tech?

A Tech, officially referred to as a breakfall in Super Smash Bros., an ukemi (受け身) in Super Smash Bros. Brawl, and breaking your fall in Super Smash Bros. for Nintendo 3DS and Wii U is an action that can be performed when the player’s character hits the ground, a wall, or a ceiling while tumbling or in hitstun.

Can you tech grounded spikes?

Spikes against grounded opponents can no longer be teched in Super Smash Bros. Ultimate.