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Synthetic Roofing Underlayment Forming Process Oct 25, 2017

Insulation materials can be divided into three categories: one is loose materials, Synthetic Roofing Underlayment such as slag, expanded vermiculite, expanded perlite, etc., has been less used. The second is the plate-like material, such as expanded vermiculite, expanded perlite block, foam cement, aerated concrete block, rock Wool Board, EPS poly-Stupid board, XPS extruded Plastic board. Third, Synthetic Roofing Underlayment the whole is pouring (spraying) insulation layer, such as asphalt expansion vermiculite, asphalt expansion perlite, polyurethane foam waterproof insulation system, such as integration.

Insulation layer before the construction of the grass-roots should be flat, dry and clean, insulation board close (rely on) grass-roots, paving pad stability, layering seam staggered, Synthetic Roofing Underlayment seam tight, the gap between the plate should be used in the same type of material embedded dense, paste should be affixed to strict adhesion, find the correct slope

The use of high-pressure airless spraying machine on-site direct foaming molding process, Synthetic Roofing Underlayment so that the integration of roof waterproof insulation, the formation of waterproof insulation layer continuously without seams, with excellent insulation effect, Synthetic Roofing Underlayment good adhesion performance, high strength, strong resistance to permeability and anti-aging performance and other characteristics.

Different varieties, labels, specifications of the coil should be stacked upright, the height of not more than 2 floors. Avoid rain, sun and damp, not close to the source of fire and heat, Synthetic Roofing Underlayment to avoid chemical media and organic solvents and other harmful substances contact.

The construction of waterproofing layer of asphalt coiled material shall be carried out after completion of other roofing works. Before laying the roof insulation and waterproof layer, Synthetic Roofing Underlayment the grass-roots must be clean and dry.

Base-level treatment agent (cold basic oil) has a strong permeability and hydrophobic, can enhance the asphalt cementing material and leveling layer of adhesion. Grass-roots treatment agent brushing generally in the leveling layer after drying, brushing should be thin and uniform, no blank, Synthetic Roofing Underlayment hemp point or bubble.

When the roof slope is less than 3%, the roll material should be parallel to the roof paving; When the roof slope is 3~15%, the roll material can be parallel or perpendicular to the roof paving; When the roof slope is greater than 15% or the roof is shaken, the roll material should be vertically paved and the upper and lower layers shall not be

Parallel to the roof overlay, should be the gutter or eaves start up to layer-by-step, two sheets of long side lap (crimping) should shun water direction, long edge lap width is not less than 70mm (full viscosity method) or 100mm (empty shop, point stick, stick method); Short edge lap joint (connector) should be guided by the direction of the wind, lap width is not less than 100mm ( Full viscosity method) or 150mm (empty shop, point stick, stick method).

The adjacent two rolls of coiled material should stagger not less than 500mm, and the top and bottom two rolls should stagger the width of 1/3 or 1/2 rolls. Parallel to the roof paving can be a roll of the end, the face of large, joint less, high efficiency, the use of the roll material transverse tensile strength is higher than the characteristics of longitudinal tensile strength, to prevent the roll material due to the deformation of the grass-roots cracks, it is preferable to use.

Perpendicular to the roof paving, Synthetic Roofing Underlayment the roof should be paved to the eaves, pressing the direction of the main direction of the wind, the joint flow, the roof can not be left to set up joints, must make the roll through the roof staggered overlap to enhance the roof waterproof and durability.

Paving a large area of roofing waterproofing membrane before, should first to the water mouth, gutter, daughter wall and settlement joints and other places to strengthen treatment, Synthetic Roofing Underlayment do a good pan-water treatment, and then pave the roof of the roll material, pawn shop affixed to the continuous multiple or high and low span roof, should be based on the first height across the low span, the first far after the order of the near.