The Bouma staff app! Bouma Technische Installatiebedrijf BV, located in Sumar, is an all-round technical installation company with over 80 years of experience in the field of: water, gas, central heating and electrical installations, sanitary facilities, air conditioning, zinc and roof coverings. Our company employs approximately 70 skilled employees in residential construction, renovation and utility work, as well as in maintenance and service. Our main working area is Friesland, Groningen and Drenthe. We are ISO9001, VCA and F-Gas certified, which means that our work and business operations meet the applicable requirements. Bouma has been a household name in the installation industry for more than 80 years.