1 2 Determination of visible defects - Part 2: Plastic and rubber sheets for roof waterproofing"
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1 2 4 5 6 7 CONTENTS
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1 Scope 1
2 Normative references 1
3 Terms and definitions 2
4 Principle 2
5 Sampling and conditioning 2
6 Procedure 3
7 Test report 3
EN 1850-2:1999 - - - -
FLEXIBLE SHEETS FOR WATERPROOFING.DETERMINATION OF VISIBLE DEFECTS.Part 2. Plastic and rubber sheets for roof waterproofing
1 2 EN 13416 1 Scope
This European Standard specifies a method for the determination of the visible defects in plastic and rubber sheets for roof waterproofing, which could influence the functional behavior of these sheets.
2 Normative references
This European Standard incorporates, by dated or undated references, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest editions of the publication referred to apply ((including amendments).
EN 13416 Flexible sheets for waterpnoofing - Bitumen, plastic and rubber sheets for roof waterproofing - Rules for sampling
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3.1 3.2 3.3 3.4 3.5 3.6 3.7 4 5 5.1 5.2 For the purpose of this European Standard, the following terms and definitions apply:
3.1 blister
elevation of the surface of varied contour and dimensions, with a cavity beneath it
3.2 crack
fissure that penetrates the external surface of the material or its entire thickness, the rubber or plastic material being completely separated between the crack walls.
3.3 hole
opening through the sheet which may allow the passage of water.
3.4 scratch
single sided damage to the surface caused by external means
3.5 indentation
small hollow or depression in the surface of the sheet
3.6 Void
enclosed cavity of an undefined shape, containing air or some other gas
NOTE The term 'bubble' refers to a more or less spherical void.
3.7 inclusion
extraneous body enclosed within the mass.
4 Principle
A part of a selected roll of plastic or rubber sheet is unrolled on a flat surface and examined for defects on both surfaces and at a cut surface.
5 Sampling and conditioning
5.1 Sampling
The plastic or rubber sheet to be tested shall be complete and undamaged rolls selected in accordance with EN 13416.
5.2 Conditioning of samples
Generally ageing or conditioning is not required to be carried out and examination shall be made under ambient conditions.
In case of dispute, the test shall be conducted at (23
6 7 а?) Ь?) с?) d) е?) f) 6 Procedure
The selected roll shall be laid on a flat surface. The first 10 m of the roll of material under examination is carefully unrolled, top surface uppermost and examined over the whole surface, with the naked eye, for the presence of blisters, cracks, holes, scratches, indentations, or any other noticeable defect. The roll is then carefully turned over and examined on the underside for the same visible defects.
Cut the roll near the end, across the full width and examine the cut surface for the presence of voids or inclusions.
7 Test report
The test report shall include at least the following information:
a) a reference to this European Standard (EN 11850-2) and any deviation from it;
b) all details necessary to identify the product tested;
c) any non-standard procedures or any peculiarities encountered during testing;
d) the presence of any blisters, cracks, holes, scratches or indentations;
e) the presence of any inclusions or voids in the cut surface;
f) the date of testing.