Commercial Building Envelope Weatherproofing & Window Sealing in Colorado
Commercial window sealing, façade joint sealant replacement, and rope-access building weatherproofing for properties throughout Denver and Colorado.
Hembree provides commercial building-envelope weatherproofing, window perimeter sealing, and façade joint sealant replacement throughout Denver and Colorado's Front Range. Our rope-access capabilities allow us to reach elevated windows, exterior joints, penetrations, and difficult façade areas without relying exclusively on lifts, scaffolding, or suspended stages.
Commercial Window & Façade Sealing
Why Exterior Sealants Fail
From failed window perimeter seals to deteriorated exterior caulking, we help building owners, property managers, general contractors, healthcare facilities, multifamily communities, and government agencies address common pathways for air and water intrusion.
Exterior sealants deteriorate because of UV exposure, temperature changes, building movement, moisture, age, and improper previous installation. Hembree can inspect accessible conditions, identify visibly failed sealant, document findings, and propose a defined repair scope. Project scope is determined after inspection, and some leaks may require evaluation by a glazing contractor, engineer, roofer, or other specialist.
Services We Provide
Commercial Weatherproofing & Sealant Services
A defined scope built around what we find at your building — not a one-size-fits-all package.
Commercial Window Perimeter Sealing
Sealing around commercial window perimeters where existing sealant has cracked, separated, or pulled away.
Failed Caulking Removal & Replacement
Removing deteriorated or loose sealant and installing compatible replacement material in the prepared joint.
Exterior Façade Joint Sealing
Sealing exterior façade joints and transitions where movement and weathering have opened gaps.
Curtain-Wall Perimeter Sealant Maintenance
Maintaining perimeter sealant where curtain-wall systems meet adjacent construction.
Storefront Window & Door Perimeter Sealing
Sealing storefront window and door perimeters against air and water intrusion.
Expansion & Control-Joint Sealant Replacement
Replacing sealant in expansion and control joints to accommodate building movement.
Flashing Transition & Penetration Sealing
Sealing flashing transitions and penetrations where different materials and systems meet.
Masonry-to-Window Transition Sealing
Sealing transitions between masonry and window frames where gaps commonly develop.
Rooftop & Exterior Penetration Sealing
Sealing rooftop and exterior penetrations such as conduit, vents, and equipment supports.
Rope-Access Sealant Application
Applying sealant at elevation using trained rope-access technicians, minimizing ground-level disruption.
Preventive Sealant Maintenance
Scheduled visual inspections and targeted sealant upkeep to catch deterioration early.
Visual Façade & Sealant-Condition Documentation
Documenting visible façade and sealant conditions with photographs for your records.
Hembree does not perform structural engineering, curtain-wall engineering, glass replacement, or complete below-grade waterproofing unless those services are added separately.
Rope-Access Weatherproofing
Sealing at Elevation, Without Scaffolding
Many elevated sealant failures occur where conventional access is expensive or disruptive. Hembree's trained rope-access technicians can reach difficult exterior windows, façade joints, soffits, transitions, and penetrations while minimizing the footprint at ground level. Depending on the building, work may also be completed using lifts, ladders, water-fed visual inspection equipment, or other suitable access methods.
Every elevated project begins with access planning, hazard evaluation, fall-protection planning, and coordination with building management.
Our Weatherproofing Process
A Clear, Six-Step Process
Site Consultation & Reported-Leak Review
We start with a conversation about the areas of concern and any reported leaks.
Exterior Visual Assessment
We visually assess accessible exterior conditions and document visible sealant failures.
Access & Safety Planning
We plan the access method and fall protection for the elevations involved.
Defined Repair Recommendations & Pricing
You receive a clear repair scope and pricing based on observable conditions.
Surface Preparation & Sealant Application
We prepare joints and install compatible sealant within the approved scope.
Final Photographs & Project Documentation
We close out with photographs and documentation of the completed work.
Water can travel behind exterior assemblies and appear far from its original entry point. Hembree documents visible conditions and completes the approved sealant scope, but no visual inspection or sealant repair should be represented as a guarantee that every source of water intrusion has been identified.
Properties We Serve
Built for Commercial Buildings of Every Type
Why Choose Hembree
A Commercial Contractor for Difficult Elevations
Colorado commercial contractor serving clients since 1997
In-house high-rise and rope-access capabilities
Multiple access methods for difficult building elevations
Site-specific safety and access planning
Insured commercial operations
Coordination with property managers and facility teams
Photo documentation available
Ability to combine sealing with window cleaning, façade inspection, dryer-vent service, and other exterior maintenance work when appropriate
Building Envelope Weatherproofing — FAQ
What is building-envelope weatherproofing?
Building-envelope weatherproofing addresses exterior joints, window perimeters, penetrations, transitions, and other locations where deteriorated sealants may allow unwanted air or water movement through the exterior assembly.
Do you replace failed commercial window caulking?
Yes. Depending on the condition and approved scope, we can remove deteriorated sealant, prepare the joint, and install compatible replacement sealant around commercial windows and other exterior transitions.
Can you reach windows and joints on high-rise buildings?
Yes. Depending on the building and project requirements, Hembree can use rope access, lifts, ladders, or other suitable access methods to reach elevated façade areas.
Can new sealant be installed over old caulking?
A surface-applied cap seal may be appropriate in some conditions, but deteriorated, loose, incompatible, or poorly bonded material may need to be removed. The recommended preparation depends on the existing joint and specified repair.
Does resealing a window guarantee that a leak will stop?
Not necessarily. Water can enter through roofing, flashing, masonry, glazing systems, penetrations, or concealed components and travel before becoming visible. We define the repair scope based on observable conditions and recommend additional specialists when the suspected source is outside our scope.
Do you provide recurring sealant inspections?
Yes. Preventive visual inspections and scheduled sealant maintenance can help property teams identify deterioration before it becomes a larger repair.
What areas do you serve?
Hembree serves Denver and communities throughout Colorado's Front Range, including Aurora, Centennial, Boulder, Broomfield, Lakewood, Lone Tree, Highlands Ranch, Castle Rock, Fort Collins, and Colorado Springs.
Protect Your Building From Failed Exterior Seals
Visible gaps, cracking, separation, and deteriorated window sealant should be addressed before they contribute to more extensive damage. Request a commercial weatherproofing assessment for your building.
Free Estimate
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Tell us about your project and we'll provide a no-obligation quote. Most responses within 24 hours.
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