LAMA UL
LAMA UL is an SBS-modified Self-Adhesive Ice and Water underlayment that is designed with precision to provide superior protection for your roofing projects. Engineered for durability and ease of application, this underlayment is an essential component in safeguarding residential and commercial buildings from the damaging effects of ice dams and water penetration.
Key Features
- conforms to CSA A123.22-08 and ASTM D1970.
- split release film.
- slip resistant.
- excellent adhesion to multiple substrates.
- high flexibility.
- good dimensional stability.
- tear and puncture resistant.
- vapour barrier.
- rot resistant.
Packaging Information
| Dimensions | 0.9x20m || 36″x65′ |
| Nominal Thickness | 1.2mm || 48mils |
| Weight | 30kg || 66lbs |
| Top Surface | Sand |
| Bottom Surface | Siliconized Film |
| Rolls per pallet | 30 |
Application Field
LAMA UL is designed to serve as a robust underlayment on both low and high sloped roof decks, providing essential protection against the intrusion of ice and water that can compromise the integrity of roofing systems. This membrane is specifically engineered to offer a superior defense mechanism in critical areas prone to water damage and ice dam formation, including rakes, eaves, and valleys.
Critical Protection Zones:
- Eaves and Rakes: Areas most susceptible to ice damming and water back-up, LAMA UL provides a dependable barrier that prevents water from seeping under shingles and causing damage to the roof structure.
- Valleys: Roof valleys channel a significant amount of water during rainstorms and are vulnerable to leaks. LAMA UL enhances the valley’s resilience against water penetration.
- Around Roof Features: Chimneys, skylights, and vents are potential entry points for water. Applying LAMA UL around these features creates a watertight seal that guards against leaks.
Application Method
Preparation:
- Inspect the Roof Deck: Ensure the roof deck is clean, dry, and free from any debris, protrusions, or damaged areas. Repair any imperfections that may affect the underlayment’s adhesion.
- Measure and Plan: Before unrolling LAMA UL, measure the roof area to plan the layout efficiently, ensuring that seams will overlap by at least 4 inches.
Installation:
- Starting at the Bottom: Begin the application at the lowest point of the roof, ensuring that the edge of the membrane extends slightly over the roof edge to facilitate proper water runoff.
- Peel and Stick: Gradually peel back the release liner to expose the adhesive side of the LAMA UL membrane. Carefully align the membrane to ensure it is straight and positioned correctly before pressing it onto the roof deck. Use a hand roller to enhance adhesion and eliminate air bubbles.
- Overlap Seams: When applying subsequent rows of LAMA UL, overlap the edges of the previous row by at least 4 inches. This overlap is crucial to create a watertight barrier and prevent water ingress.
- Secure at Edges and Protrusions: Ensure that the membrane is firmly adhered around the perimeter and at any protrusions (such as vents, chimneys, or skylights). Use additional membrane pieces to seal around these features if necessary.
- Final Inspection: Once the entire area is covered, conduct a thorough inspection to confirm that all seams are properly overlapped and sealed, and there are no air pockets or loose edges.
Tips for Best Results:
- Temperature Considerations: For best adhesion, install LAMA UL in temperatures above 50°F (10°C). In colder weather, the membrane may become less flexible, and the adhesive less tacky. If necessary, store the rolls in a warm environment before application to improve pliability.
- Safety First: Always prioritize safety when working on roofs. Use appropriate safety gear, including fall protection, and ensure ladders and scaffolding are secure.
- Cutting to Size: Use a sharp utility knife to cut LAMA UL to size. Clean cuts ensure better fits and finishes around edges and corners.
Completion:
Upon completing the installation of LAMA UL, the roof deck is now better protected against water and ice damage, providing peace of mind and extending the life of the roofing system. For any specific questions or additional support, consult the product’s installation manual or contact technical support.