Windsor Radon
Licensed Radon Mitigation in Windsor, Colorado
Windsor includes established homes, rapid new development, passive radon rough-ins, basements, slab areas, crawl spaces, and properties that may fall under different permitting authorities depending on the address. A visible passive pipe does not prove the indoor radon level is low or that the buried system can be activated without correction.
Drennen provides licensed radon testing, mitigation, passive activation, crawl-space systems, service, repairs, real estate support, and new-construction coordination throughout Windsor and Northern Colorado.
Colorado-Licensed Radon Programs | Passive and Active Systems | Real Estate and New Construction | Roofing and Radon Coordination When Needed
Windsor Radon Services
Testing and Reports
Professional measurements for homeowners, buyers, sellers, post-mitigation verification, rental properties, and larger buildings.
Existing-Home Mitigation
Sub-slab and mixed-foundation systems designed for the actual pressure zones rather than selected by square footage alone.
Passive-System Activation
Inspection, fan selection, monitoring, electrical coordination, discharge, and testing for usable new-home rough-ins.
Crawl-Space Systems
Sub-membrane depressurization with detailed seams, walls, piers, penetrations, collection, access, and moisture planning.
System Repair
Fan replacement, alarm issues, condensation, damaged membrane, loose piping, undocumented systems, and elevated follow-up results.
Builders and Developments
Plan review, foundation collection, membrane, stacks, inspections, activation, testing, and turnover records.
A Passive Pipe Is Only One Part of the System
- The collection area beneath the slab or membrane must connect to the stack
- Separate foundation zones must be identified before choosing the number of suction points or systems
- The stack must have a usable route, correct size, supports, labels, and future fan location
- Electrical power, monitoring or alarm, condensate, service access, and safe discharge must be completed
- The finished home must be tested; activation may still be needed
Addresses and Local Requirements
Windsor-area properties can involve town, county, and other project-specific authorities. Drennen confirms the address and authority having jurisdiction before relying on a permit or inspection assumption. Builders should bring the radon professional into the project before the slab pour and coordinate the radon scope with plumbing, HVAC, electrical, roofing, firestopping, and framing.
Planning Prices
Drennen 2026 Northern Colorado records commonly show straightforward passive activations near the mid-$600s and ordinary slab systems in the low- to mid-$1,000s. Crawl spaces, mixed foundations, difficult routes, multiple zones, incomplete passive rough-ins, and corrective work cost more. See the dedicated cost page for ranges and inclusions.
See the dedicated cost page →Why Drennen Fits Windsor Projects
- Licensed radon measurement and mitigation oversight
- Existing-home, new-construction, multifamily, and commercial experience
- General-contractor understanding of framing, siding, roofing, crawl spaces, and trade sequencing
- In-house testing and reporting workflow
- Written system scope, post-mitigation result, warranty, and service records
Frequently Asked Questions
Get a Windsor Radon Evaluation
Send the property address, test result, foundation information, passive-system photos, building plans if applicable, and any real estate or construction deadline.
Request a Windsor Radon QuoteVerify current licenses, local authority, permits, prices, warranty, and project requirements before contracting. This page is general information.
Drennen Custom Contracting | Serving Windsor and Northern Colorado | 970-482-9100 | [email protected]