Demsun N28 Lead Silicone Sealant is a one component, high quality neutral
curing silicone sealant designed for applications where long term durable
plumbing, spouting, roofing, flashing, cladding and guttering are required. It
is suitable for roofing that stops weather ingression, tile lifting and noise.
Outstanding adhesion on joining elements made from brick,stone, concrete,
wooden, plastic, steel, aliminum, zinc, porcelain, ceramic, PVC, metal, glass
and porous surfaces. Highly elastic, +/-25% movement capability. UV, water
and weather proof. Non-corrosive neutral cure. Fast curing. Low odor. Interior/
exterior use. Easy to apply. Chemically resistant. Application Area.Joints
and cracks in gutters. Flashing. Downpipes. Lap joints. Skylights. Cladding
walls. Vent and HVAC ducts systems
Ensure all surfaces are clean, dry and free from lubricant or any contaminants
that may impede adhesion.You may need priming on porous surfaces.The
application temperature must be between +5°C and +40°C. In order to reduce
the deformations of the joints, their depth must be much less than their
width, minimum dimensions are 5x5 mm, for wider joints the depth should be
preferably half of the width and it is adjusted by the use of a backup material.
After the application, the sealant must be tooled with light pressure within
5 minutes to spread the material against the joint surfaces and to obtain
a professional finish.Excess uncured sealant may be cleaned with solvent.
Cured sealant can be removed barely mechanically.