Substrate for bituminous shingles

Substrate for bituminous shingles

The substrate should meet the following requirements:

– have such strength and stiffness, to under the influence of external pressures (for example. going) there was no damage to the roofing,

– its surface should be even; clearance between the substrate surface and the length of the control staff 2 m may not be greater than 5 Mm,

– edges, the corners and the contact of the substrate with the planes of the elements” buildings protruding above the roof should be rounded with a hatch with a radius of not more than 3 cm or mitigated with a diagonal or triangular bumper with at least a side 3 Cm.

Plank substrates should additionally meet the following requirements:

– be made of boards of the same thickness, with maximum width 15 Cm,

– be made of boards joined with a "tongue and groove" in objects exposed to strong gusts of wind from below, for example. in sheds and in objects with small slopes from 20% into 36% and with a rafter spacing greater than 1,1 m,

– be made of boards joined with a "tongue and groove" or a rebate; then the best aesthetic results are obtained.

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