Why Concrete Joint Sealing Matters
AN OPEN JOINT IS AN OPEN INVITATION.
Most concrete doesn't fail all at once. It deteriorates gradually — starting with open joints that allow water, seeds and debris to work their way in. Understanding why joints fail helps property owners make better maintenance decisions.
What Happens When Joints Are Left Open
Water Gets In
Open joints allow rainwater and irrigation runoff to enter the joint and reach the base material beneath the slab. Over time, water erodes the base, creates voids, and can cause slab settlement and edge cracking.
Vegetation Establishes Itself
Soil and organic material accumulate in open joints. Seeds carried by wind or water germinate in that material. Roots from weeds and grass can widen joints and accelerate edge deterioration.
Debris Accumulates
Dirt, gravel, sand and debris pack into open joints over time. This material prevents the joint from functioning as designed — the concrete can't move freely, which can contribute to cracking.
Edge Deterioration Follows
Once water and vegetation are working in a joint, the edges of the concrete slab begin to deteriorate. Spalling, chipping and crumbling edges are a sign that the joint has been open too long.
Open Joint vs. Sealed Joint
Open / Neglected Joint
- Water enters freely
- Weeds and grass grow in joint
- Debris packs into joint
- Edges begin to deteriorate
- Creates potential trip hazard
Clean / Sealed Joint
- Water sheds away from joint
- No environment for vegetation
- Joint remains clean and functional
- Edges remain intact
- Walkway remains safe and attractive
WHEN A CONCRETE PROBLEM STARTS SMALL
Open and deteriorated concrete joints are more than a cosmetic issue. Joints are designed to accommodate movement between concrete sections, but when they are left unsealed or the existing sealant deteriorates, water, dirt, vegetation and debris can enter the joint.
Over time, those conditions can contribute to deterioration around the joint and surrounding concrete. What begins as an open joint or small maintenance issue can eventually become a larger repair problem. Professional joint sealing helps protect these vulnerable areas while the surrounding concrete is still serviceable.
OPEN OR FAILED JOINT
Water, dirt and vegetation can enter the opening.
ONGOING EXPOSURE
Moisture and debris continue reaching the joint and surrounding concrete.
DETERIORATION
Joint edges and surrounding concrete may begin showing greater wear or damage.
LARGER REPAIR NEEDS
Conditions that could once be addressed through maintenance may eventually require more extensive repair or concrete replacement.
SEAL, REPAIR, OR REPLACE?
Not every concrete problem requires replacement. The appropriate solution depends on the condition of the joint, crack and surrounding concrete.
Joint sealing may be appropriate when the surrounding concrete remains serviceable but the joint is open, deteriorated or no longer properly protected. The goal is to close and protect the joint while helping reduce water, debris and vegetation intrusion.
Localized repair may be appropriate when deterioration extends beyond the joint itself or when cracks, damaged edges or other isolated concrete conditions need attention. The condition of the surrounding concrete should be considered before deciding on the scope of repair.
Concrete replacement may be appropriate when a slab or section has deteriorated beyond a practical maintenance or localized repair solution. Replacement allows the damaged section to be removed and new concrete installed where necessary.
NOT SURE WHICH ONE YOU NEED?
America's Sealing Team can evaluate the visible condition of the concrete and discuss the appropriate service options for the property.
REQUEST A FREE ON-SITE ESTIMATEWhat Sealed Joints Do
Stops water infiltration
A properly sealed joint prevents water from entering and reaching the base material.
Prevents weed and grass growth
Sealed joints don't collect the soil and organic material that vegetation needs to establish.
Reduces trip hazards and liability
Maintained joints are less likely to develop the open gaps and raised edges that create walkway hazards.
Extends useful concrete life
Concrete that is maintained regularly lasts longer than concrete that is neglected.
Improves curb appeal
Clean, sealed joints look professional and well-maintained.
Helps prevent more expensive repairs
Preventive maintenance costs less than concrete replacement.
FREQUENTLY ASKED QUESTIONS
WHY DO CONCRETE JOINTS NEED TO BE SEALED?
Concrete joints create intentional separations between sections of concrete. When those joints remain open or the existing sealant deteriorates, water, dirt, vegetation and debris can enter the opening. Joint sealing helps protect the joint and surrounding concrete from continued exposure.
DOES EVERY CRACK MEAN THE CONCRETE NEEDS TO BE REPLACED?
No. The appropriate solution depends on the condition of the crack and surrounding concrete. Some conditions may be candidates for filling or localized repair, while more extensively deteriorated sections may require replacement.
CAN YOU WORK WITH COMMERCIAL PROPERTIES AND HOAs?
Yes. America's Sealing Team serves commercial properties, HOAs, property managers and other organizations throughout the Dallas–Fort Worth Metroplex in addition to residential customers.
WHAT TYPES OF CONCRETE PROBLEMS CAN YOU ADDRESS?
Services include sidewalk joint sealing, expansion and control joint filling, concrete crack filling, caulking and re-caulking, weed prevention in joints, trip-hazard-related concrete work, preventive maintenance, concrete replacement and repair, and parking lot striping and ADA handicap painting.
HOW DO I KNOW WHETHER MY CONCRETE SHOULD BE SEALED, REPAIRED OR REPLACED?
It depends on the condition of the joint and surrounding concrete. America's Sealing Team can perform an on-site assessment, discuss the visible conditions and explain which available service options may be appropriate.
WHAT AREAS DO YOU SERVE?
America's Sealing Team serves properties throughout the Dallas–Fort Worth Metroplex. See the Service Areas page for the current county and city coverage.
Ready to Seal Your Concrete?
Free on-site assessments across the Dallas-Fort Worth Metroplex.