The Safewards model was created to reduce conflict and containment in psychiatric inpatient units. The model suggests alternative methods for containment and aims to create a safer hospital experience for both patients and staff. The evaluation of this model has provided evidence that it might be implemented on adolescent psychiatric wards. This study evaluated the impact of the implementation process of the Safewards model on the social climate of adolescent psychiatric inpatient wards by using the Essen Climate Evaluation Schema questionnaire. The study was carried out on six closed wards of one Finnish hospital district. Data were collected at baseline (42 adolescent inpatients and 134 staff members) and after the implementation of the model (39 inpatients and 115 staff members). The data were analysed using the Mann-Whitney U-test. The findings of this preliminary study indicate that inpatients' experience of patient cohesion and therapeutic hold and staff members' experience of safety on adolescent psychiatric wards might be improved by the implementation of the Safewards model on adolescent psychiatric wards.