Successful augmentation of compromised ridges using membranes requires correct diagnosis and careful case selection. The goals of the reconstruction should be identified before surgery. The timing and application of membranes and selecting the type of bone graft specific for each site are important. The technique requires clinical experience in flap design and mobilization, trimming, shaping and stabilizing the membrane, and suturing. Careful postoperative management of forces on the alveolar ridge from removable appliances is required.