LAMA HI-TEMP
LAMA HI-TEMP is a high-performance, self-adhesive roofing underlayment specifically engineered to withstand extreme temperatures while providing exceptional durability and flexibility. Made from a precise blend of SBS polymers, premium asphalt, and high-quality additives, LAMA HI-TEMP delivers the perfect balance of strength and adaptability. The top layer features a durable, anti-slip film for secure footing, while the bottom layer includes a split siliconized release film that reveals a highly adhesive asphalt layer, ensuring a strong and reliable bond to a variety of roofing surfaces.
Key Features
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Superior Adhesion: Utilizing advanced Bitubond™ technology, LAMA HI-TEMP ensures unmatched bitumen-to-bitumen adhesion, delivering watertight seams and long-lasting performance, even under extreme conditions.
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High-Temperature Resistance: Designed to withstand temperatures up to 125°C (257°F) without compromising integrity, making it the ideal choice for metal roofing systems and other high-heat environments.
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Extended UV Resistance: Formulated for superior UV protection, LAMA HI-TEMP can endure prolonged sunlight exposure for up to 12 months without degradation, providing extended protection during lengthy installation periods.
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Effortless Installation: The convenient split-release liner enables quick, precise application, reducing installation time and labor costs, making it an efficient solution for contractors.
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Enhanced Slip-Resistant Surface: The durable anti-slip top layer ensures a safer working surface, even in challenging or hazardous conditions, improving on-site safety for workers.
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Exceptional Dimensional Stability: Engineered for minimal thermal expansion and contraction, the underlayment maintains consistent coverage, preventing gaps and ensuring reliable protection across a wide range of temperatures.
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Tear and Puncture Resistance: Built with a reinforced composition to resist tears and punctures during installation and throughout the lifespan of the roof, ensuring long-lasting durability and protection.
Packaging Information
| Dimensions | 0.915x20m || 36″x65′ | Top Surface | Anti-Slip |
| Nominal Thickness | 1.35mm || 53 mils | Bottom Surface | Split Release Film |
| Nominal Weight | 28.5 kg || 63 lbs | Gross Coverage | 20 m ² || 215 sqft |
| No. on Pallet | 30 Rolls | Net Coverage | 17m ² || 183 sqft |
Application Field
LAMA HI-TEMP is the perfect solution for high-temperature roofing applications, specifically designed for use under metal roofs and as a durable waterproof barrier beneath asphalt shingles. With the ability to withstand temperatures up to 125°C (257°F), LAMA HI-TEMP offers reliable protection in environments that demand exceptional heat resistance and long-lasting performance. Its versatility makes it an ideal choice for both residential and commercial roofing projects.⬤
Application Method
- Surface Preparation:
- Ensure the roof surface is clean, dry, and free from dust, dirt, grease, or other contaminants.
- Apply an appropriate primer if required, allowing it to dry completely before proceeding.
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Membrane Positioning:
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Unroll the LAMA HI-TEMP membrane without removing the release liner to position it on the prepared surface. Align the membrane to the starting point, leaving a 3-4 inch overlap at the edges for subsequent rolls.
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Once positioned correctly, re-roll half of the membrane toward the center, keeping the other half in place.
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- Butterfly Installation:
- Begin with the split-release liner: Peel off half of the release liner from the re-rolled section (usually from the center outward).
- Gradually press the membrane down onto the surface while peeling back the liner in manageable sections to avoid air pockets and ensure smooth adhesion.
- Use a weighted roller or a hand roller to press down the membrane firmly, ensuring complete adhesion.
- Applying the Second Half:
- Roll back the remaining half of the membrane toward the center and repeat the process.
- Peel off the second half of the release liner and carefully press the membrane down onto the surface, smoothing it with the roller to ensure full contact.
- Seam Overlapping:
- For the next membrane sheet, overlap the previously installed sheet by 3-4 inches on the edges. Ensure that the seams are properly aligned.
- Remove the release liner on the overlap area and firmly press the seam with a roller to ensure a watertight seal.
- Final Inspection:
- Once the membrane is fully installed, inspect the surface to ensure there are no wrinkles, bubbles, or unsealed edges. Re-roll any sections as needed to ensure full adhesion.
- Check the seams for complete adhesion and watertightness.