Signs It’s Time to Seal Concrete Joints in Your Driveway or Garage



Concrete is a durable surface material for driveways, patios, and garage floors. However, concrete still requires maintenance to withstand weathering over many years. One important aspect of concrete maintenance is sealing the joints where concrete sections meet. Knowing when to reseal these joints is important to protect the concrete from damage. This blog post will outline some of the key signs that indicate your concrete joints need resealing. Neglect allows water intrusion to harm concrete over time. Learn warning signs of failing seals needing to be addressed.

Excavation and Concrete Joint Sealing

New concrete installation requires proper excavation preparing a stable base. Joints cut correctly facilitate expansion and contraction movements. Space joints are approximately equal to concrete thickness but not less than one-fourth of thickness. Too wide and sealant may prematurely fail. Cut joints straight and even use the proper blade type for the job. Sealing provides a flexible barrier. Pourable self-leveling sealants or backing rod installed sealants protect against moisture, debris, and plant roots. Resealing every 3-5 years in climates with freeze-thaw cycles maintains protection. Annual inspection detects when resealing is needed.

Cracks Appearing and Spalling Concrete

The primary sign sealing has failed shows as cracked concrete surfaces or openings at joint edges. Cracks allow water access accelerating the breakdown of concrete over freeze-thaw cycles. Catch failures early before extensive damage results in requiring replacement or repairs. Recall promptly once cracks are spotted. Water trapped behind failing seals causes concrete to delaminate or spill off. Freeze-thaw weathering stresses concrete and reinforcement when moisture penetrates. Replacing spalled areas before deeper decay sets in saves repair costs down the road. Prompt sealing reestablishes a moisture barrier.

Ponding Water and Separation at Joints

Water not draining away after rainfall but instead pooling on concrete surfaces reveals joint seal failures. Without a complete seal, water works its way in and has no way out. Ponding accelerates concrete damage if not addressed by resealing to close entry points. Over time with UV exposure and weathering, separation may develop at joint interfaces where concrete sections come together. Gaps allow water passage causing problems. Recaulking joins the pieces back together.

Pitting, Staining, and Checking with Experts

Loss of sealer protection presents staining from chemicals and dirt penetrating concrete’s pores. Pitting also appears around aggregate due to moisture intrusion weakening the surface. Cleaning may not fully remove such damage signaling a need for fresh sealing. Consulting professional excavators and concrete specialists’ aids detection of sealing issues. Experienced evaluators catch subtle signs like discoloration identifiable only to the trained eye. Expert sealing extends infrastructure lifespans by protecting against unchecked damage.

Benefits of Maintenance

Compared to repair costs down the road, regular sealing maintenance provides excellent returns on investment. Catching small problems early forestalls expensive replacements. Protect concrete to enjoy surfaces for decades ahead with some simple seasonal upkeep like resealing joints when signs indicate it’s time.


Keeping an eye out for cracks, weed growth, spalling, water ponding, separation at joints, pitting, and staining can indicate failing concrete joint seals. Early detection helps avoid costly repairs. Use concrete joint sealing or consult a professional that can identify subtle signs. Proactive maintenance extends the lifespan of concrete surfaces, and periodic resealing ensures durable, low-maintenance service.  

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