Seamless, Heavy-Duty Waterproofing for Concrete Surfaces

Sika® Sikalastic® HLM 5000 GC is a high-performance, liquid-applied elastomeric waterproofing membrane designed to protect concrete surfaces from water intrusion. Its cold-applied formula creates a seamless, flexible barrier that bridges cracks and withstands harsh environmental conditions.

Ideal for below-grade waterproofing, plazas, decks, and structural concrete applications.

Why Contractors Choose Sikalastic® HLM 5000 GC

✔ Seamless Waterproof Barrier – No joints, no weak points
✔ Crack-Bridging Flexibility – Handles movement without failure
✔ Cold-Applied – No torching or heating required
✔ Fast Cure (GC – Gun Grade) – Efficient application for vertical surfaces
✔ Long-Term Protection – Resists water, weather, and soil conditions

Best Applications

• Below-grade foundation waterproofing
• Concrete decks and balconies
• Plaza decks and parking structures
• Retaining walls
• Planters and landscaping structures

Product Specifications

• Size: 5-gallon pail
• Type: Elastomeric liquid waterproofing membrane
• Application: Cold-applied (gun grade)
• Color: Black
• Use: Exterior / below-grade applications
• Substrates: Concrete and masonry

Installation Overview

1. Ensure surface is clean, dry, and properly prepared
2. Apply using trowel, roller, or spray equipment
3. Build to recommended thickness per manufacturer guidelines
4. Allow proper curing between coats if required
5. Protect membrane with drainage board or protection layer

Pro Tips

• Always check required mil thickness for proper waterproofing
• Use primer if specified for your substrate
• Protect membrane before backfilling
• Ideal for vertical and horizontal applications

1. Submit a quote request for this product
   
2. Our team reviews availability and pricing
   
3. We follow up with a detailed quote and next steps
   

Pricing, availability, and lead times may vary by product and quantity.

• Local pickup options available
• Delivery available depending on product and location
• Lead times vary based on availability and order size

Need Help?

Have questions or need help selecting the right materials?

Our team is happy to help.