General terms and conditions

In all cases not covered by these terms and conditions, the NPR7452 terms and conditions will apply.

              

1.1       Before blasting

 

            a.         All welding spatter and welding slag must be removed immediately after blasting.

            b.         Round off sharp edges and drill holes to a radius of 2 to 3 millimeters.

            c.         Any openings between welding spots on single-welded parts need to be sealed using

                        a recoatable kit.

d.         Before blasting, the surface must be free of oil and grease to minimize the risk of poor adhesion, particularly in the case of automatic blasting processes.

 

1.2       During blasting

 

a.         Ensure that the required degree of cleanliness and roughness is realized while taking into account that the blasting profile may not exceed 70 µm.

b.         Although it has never clearly been proven that roughness improves adhesion of the paint to the substrate, we recommend the realization of a specific minimum roughness, especially in the case of automatic blasting processes. Particularly for high-build primers (zinc dust paints), a minimum Ra value of 25 µm should be realized. Rugotest N03; N11-A. (also see section 16.16 page 48).

c.         With regard to surface preparation, please refer to NPR 7452.

 

 

 

1.3       After blasting

 

a.         Store blasted materials under conditions in which moisture, (spray) dust and other undesirable influences cannot affect the quality of the paint system.

b.         Make sure the blasted surface is dry and free of dust, oil and grease before starting to apply the coating material.

c.         Apply the first coat as soon as possible after blasting to minimize formation of corrosion.

 

 

 

1.4       During application

 

a.         Paint products may be applied only at temperatures between 5°C and 35°C. When using two-component products, we recommend a minimum temperature of 15°C to ensure optimal chemical reaction between both components unless specified otherwise in the product data sheets. The relative humidity may not exceed 85% and the surface temperature should be at least 3°C above the dew point.

b.         During application, drying and/or curing, adequate ventilation must be provided.

c.         Work in accordance with the specified drying times between the separate coats of the coating system.

d.         Ensure that the required nominal film thickness is realized (see section 16.14 page 47). We recommend that the required film thickness not be exceeded by more than 25% per coat. The required film thickness must also be realized on edges, corners and difficult to reach places.

e.         Use the thinning procedures specified by Baril. Warrantees will not apply if it turns out that application of thinning procedures other than the ones specified can cause problems.

f.          With regard to the choice of application equipment, we recommend the use of airmix and/or electrostatic spraying. These offer a reduction in paint consumption of 10% and 25% respectively depending upon the nature of the object and the settings used.

g.         When choosing the colours RAL-9006 and RAL-9007 as well as the other aluminium and/or Miox colours for finish coatings, one should take into account that optical colour differences may appear if the top coating later needs to be touched up via brush/roller application to repair local damage.

 

1.5       Storage

 

a.         For the required conditions during drying, please refer to 4a.

b.         In case of indoor storage, protect the surface from spray dust or other undesirable influences.

c.         Outdoor storage is permissible only after complete drying/curing of the paint system in order to minimize the effect of rain and/or condensation. If the paint system has not yet become fully dried/cured, the coated materials must be covered.

 

1.6       Transport

 

a.         Transport of the coated parts to the building site may take place only after sufficient drying and/or curing of the paint system has taken place.

b.         During transport and storage, make sure there are sufficient protective elements inserted between the various coated parts.

c.         Use canvas or canvas covered slings and straps during transport and assembly.

 

1.7       Assembly

 

a.         Use metallized bolts and nuts for assembling coated parts.

b.         Any mechanical damage resulting from transport should be reworked in accordance with the rework instructions.

c.         Mechanical damage caused by the use of parkers, blind rivets etc. are excluded from any warrantees that may apply.

 

1.8       Coating contractor

 

a.         When using Baril coating products, the coating contractor must be familiar with the complete paint specifications, the most recently updated product data sheets, health and safety data, and the general terms and conditions of Baril Coatings B.V. for protective coatings on steel.

b.         Only products in unopened original Baril packaging with genuine Baril labelling may be used.

 

1.9       Maintenance projects

 

a.         All performance specifications within B.A.S. requires long-term maintenance. A maintenance system will be recommended and made available for all new building systems. From the perspective of corrosion protection, the first maintenance activities on a paint system should be carried out when its exterior surface has progressed to the point where it complies with class Ri 3 (= 1% surface rust) of the ISO 8618-3 standard. However, more frequent maintenance is recommended from the perspective of aesthetic factors such as calcification, discolouration, loss of gloss etc.

Before a maintenance system can be implemented, it is very important to obtain information on the substrate conditions and climatological circumstances at the project location. Based on this information, a suitable method of surface preparation can then be recommended to ensure an optimum end result. In case of any doubts or insufficient information regarding the existing situation (substrate), we recommend attaching test surfaces to the existing system (DIN55928) and evaluating these after a predetermined interval with regard to adhesion and/or other aspects such as colour, gloss etc.

b.         The original colours applied to existing projects may change over time under the influence of aging and environmental factors.

 

1.10      General

 

a.         For the terms and conditions that apply to the treatment of hot dip galvanized steel structures, please refer to the Dutch national NPR 5254 guideline for the industrial application of organic coatings on hot dip galvanized steel (Duplex system).

b.         All our tenders and agreements are subject to the general terms and conditions of sale for paints and printing inks as registered with the District Court in Amsterdam.

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