Drennen Custom Contracting

Drennen Custom Contracting is the leading certified radon mitigator in Northern Colorado. We specialize in real estate transactions and most radon systems can be installed in one day or less. Drennen Custom Contracting also provides personalized roofing services including estimates, inspections and certifications. Our areas of expertise include hail and wind damage, leaks, full roof replacement or repair, and assistance in working with insurance companies. We are constantly striving to use the highest standards and best industry practices in all areas of work we do.

Arnold Drennen and Drennen Custom Contracting have been remodeling homes in Ft. Collins, Northern Colorado, and Southern Wyoming since 1973. Services include roofing, new and remodeled bathrooms, kitchens, basements, additions, all areas of repairs and in 1980 added Radon Testing and Radon Mitigation Services. Arnie Drennen has personally managed his company since its inception and continues to offer his customers his personal attention to insure quality and professionalism. Drennen Custom Contracting, in keeping up with customer's needs, is now an Energy Star Preferred Contractor offering home analysis.

Since 1977, Owens Corning has been a leading manufacturer of shingles and accessories for the residential roofing market. Though best known for our PINK Fiberglas insulation, Owens Corning also is a leader in the roofing market. Don't just take our word for it - ask U.S. homebuilders. According to a Hanley-Wood Publishing survey of 3,400 U.S. builders, Owens Corning Roofing products were voted "the most recognizable brand in the market." Owens Corning Duration Premium Cool shingles meet initial solar reflectance of.25 for ENERGY STAR requirements.