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city hall improvement 3-8-04 001 03'OR/'2004 10 44 FAX 253 627 4395 BCRA IQ 001 A 0.CXIi teK BCRA Tsang Date' 3/8/2004 EKITransmittal To: Qty of Yet. Phone 360 458 3835 Fax 3604583144 Arta, Gary Carlson 3 Pages including this cover sheet Protect: Yelm City Hall Improvements We we sending you. O Attached ? Under separate cover in the following items' COPII.S DATE NO DESCRIPTION I 03/08/04 Architectural Paintin', S ee. Manual /exec t THESE ARL TRANSMITTED ac checked below' F7 For approval ? Reviewed as submitted ? Resubmit for review 0 For your use ? Reviewed as noted ? Submit for distribution 0 As requested ? Returned with response ? Return corrected prints ?R For review / continent ? FOr: BIDS DUE 20 PRINTS 2H'fURNET) AFTER LOAN FROM US F7 Remark!:. Please review enclosed Copy TO If enclo.:mycs are not as noted, kindly notify uS at once. Signed. Jim Cave l'IACiIFct Architect r ARC111TCCT3 a R 0 . N CONNAtI ROWAN AKIYAMA NCO ii ".""co T I'1 %3.1274367 210611CIFIC AVEN'Jr SUITE 300 W TACO" WASHINGTON 984:1 FAX 251677 4394 03/08/2004 1044 FAX 253 627 4385 BCRA 10003 *,URFACE PREPARATION 1.0 GENERAL This section lists various surface preparation procedures by numbers. These numbers correspond to the substrate sections listed under both Evaluation of Systems and under Interior Systems Note: When a system in specified, the procedures contained herein must be referenced, along with all relevant System Notes. This section presupposes traditional painting work, and describes the surface preparation necessary for each substrate. It is essential that substrates are dry and receive the necessary surface preparation to ensure adequate adhesion. Palm coatings have definite limitations of performance based on type, quality, application and surface preparation. The durability and appearance of any finished paint system is directly related to quality and thoroughness of the surface preparation. Io7iC1 Proper surface preparation is of utmost importance and regulates the durability, appearance and performance of the applied \JJ protective coatings. Por this reason, always investigate the prevailing surface preparation limitations, whether they be accessibility, contamination of manufacturing process, damage to machinery and equipment, physical harm to personnel, or whatever. After the limitations are definitely established, select the finish system best suited for the exposure, within the limitations established by adaptable surface pr aparalion procedures. The majority of paint failures are directly related to improper and insufficient surface preparation, and to the disregard of the required environmenal conditions. Paints should never be applied in thick coals, which may lead to sagging, wrinkling, slow dry lime, poor gloss development. Paints should never be ovenspread (i.e. applied too thin) as this produces an inadequate film, which effects durability, gloss uniformly and sealing properti( s. Most conventional paints perform better if applied in uniform mats at a rate of approx. 320 -400 square feet/gallon f8 to 10 square metersAder) to attain a 4 - 5 its wet film thickness. Among exceptions are elastomeric and high-build specialty coatings specifically designed for thick film application, and lacquers, which are applied in thin mats. Allowing the manula-turer's recommended dry lime between coals reduces the chance of lifting the previous coal. Some coatings, applied under marginal conditions, may require the application of a lest patch of the next mat to determined the cure is complete. If lifting orwrinkling is visible in the lest patch. the previous coating should be given more time to cure fully Most coating systems require subsequent coats be applied within a certain amount of time to assure proper inter coal adhesion. This is particularly important when epoxy, polyurethane, and some alkyd systems are used. If the time period between mats is loo long, additional sanc ing (or otherwise lightly abrading the previous coating) will be required before application of the next coat. To achieve an even appearance on certain woods when using a stain or slain/varnish system, a very thin coat of shellac (i.e. 1 part shellac to 8 parts alcohol) Can be used to even out the porosity of the wood before application 1.1 ENVIRONMENT During construction of new buildings, there are times in g. winter, late fall, etc) when the interior paint application is started before the heating system is operating and the building is completely closed to the exterior weather. In certain times of the year. conditions remain acceplable, at other times, the quality of the finished work is severely compromised. Even the use of propane heating in a sealed building can adversely affect the curing of applied Coalinga due to high humidity created when the fuel bums. The moisture, in addition to the moisture vapor created as latex paints dry, can condense on cold surfaces. such as windows, frames, and exterior walls, affecting the paint Proper airflow is important to ensure drying of the paint, and IQ reduce the bufld•up of fumes that Can pose safety and health risks. Environmental conditions must be within the specified limits before and during application, and during curing, or poor physical paint properties will result. The Conditions must also be within the specified limits during the drying or curing process, until the newly applied coaling can itself withstand 'normal ' adverse environmental factors (e. g. sudden rain or an excessively hot period). Latex paints are most often affected by variations in the environmental conditions. mostly due to their sensitivity to high humidity during the cure. With all coatings. temperature should be above 50" F (10° C) and the relative humidity should be below 85%. ,,MROArchitec(ural Painting Specification Manual -March 2001 Chapter 3 Section 3 The Master painters institute 9 1997.2001 Page 2 of 16 03:08;2004..10 44 PAX 253 627 4395 BCRA 002 INTERIOR SURFACE PREPARATION 9.2 PLASTER AND GYPSUM BOARD Remove sand, dust, dirt, oil rease wax silicone. glue and all other foreign ma~(pL Any defects apparent before, and after, the T primer son as been applied shall not bet a response i y o t ee smOador. The resulting surface must be made acceptable to the Painting Contractor before application of the finish coat(s). Drywall Defects Many defects in the drywall substrate cannot be seen until after the primer, and in some cases, the intermediate coal, have been applied This call in drywall is net connected with the quality of either the paint or its application. In addition, structural deficiencies in studding and improperly applied drywall can cause other problems such as "nail popping" , ridging, pinholes, em. Latex primer sealers are flat in appearance, and deficiencies can be hard to detect, particularly under low fighting conditions. However, when materials with a slight to high gloss are applied, the deficiencies in the drywall are very noticeable. At this point, the drywall contractor should be obligated to correct all remaining imperfections, Joint Fillers The Painting Contractor should be cautious when painting drywall (gypsum board), as some of the new type of joint fillers on the market may have an alkali content too high for normal paint coatings Some lightweight joint fillers are so porous, they require refilling, different filler, or the addition of an extra coat of sealer or finish coating, none of which was called for in the painting specificalmns. This thould not be the finencof responsibility of the Painting Contracol. Only lop line Immer sealers with excellent sealing properties mist be used. Recycled paper, often used to produce drywall facings, may requite additional preparation such as careful sanding and the application of an additional coat of primer sealer to eliminate suction spots etc. Slain blocking or alkyd based sealers may be required to block the leaching ofwater soluble materials occasionally found in recycled paper. Plaster Newly applied plaster must cure a minimum of 30 days at 75° F (241 C). The surface must then be tested for alkalinity (See 1.2 DH Testing). Wash and neutralize high alkali surfaces where they occur. Any imperfection in the plaster must be corrected by the plaster trade. Large holes, cracks, joints and other visible imperfections, must be corrected before surfaces will be accepted. Paint should not be applied until repaired surfaces are completely dry. After the application of the primer coat, fill minimal cracks, holes and imperfections, and sand smooth to match adjoining surfaces. Moisture readings must be taken to assure that no more then 12% moisture is in the plaster al the time of the coatings application. Porous areas that show suction spots must be double primed Enwronmi lal cmi horns before and during application and during drying should be as outlined (See 1.1 Environment). Where plaster 'hot (pots' or questionably cured plaster surfaces are encountered. the use of an alkali resistant sealer, such as MPI N3, is recommended. 9.3 ACOUSTIC PANELS AND TILES The most common acoustic panels and tiles are of coated mineral fiber, or of composite wood fiber. The coated mineral fiber panels are most often large sized and used in suspended ceilings These panels can be removed easily from the -T- bar frame The composite wood fiber types are similar to low density fiberboard, and are found as small 12" by 12" (or 305mm by 305mm) tiles. These are designed to be attached to the ceiling Both types are supplied with a coating on the face surface. Remove all foreign natter including pencil marks, water stains, and other markings. Removable panels should be moved to an area where the app ication, can be made to the full face of the panel, allowed to dry fully, then returned to the -T' bar. Fixed tiles can be vacuumed clean with a soft-ended attachment, to remove accumulated dust Environmental conditions before and during application and during drying should be as outlined (See 1.1 Environment). 10.1 CANVAS AND COTTON COVERINGS Surfaces to be coaled should be clean, dry, and free from dirt, grease, oil, or any foreign matter. Insulating coverings should be tested with a moisture meter for moisture content of the complete covering before painting. Readings shall register 12% or less before painting. EnAronmental conditions before and during application and during drying should be as outlined (See 1.7 j Enviropment). .WJAmhitettural Painting Specification Manual - March 2001 Chapter 3 - Section 3 The Mactar Painter Institute 0 1997-2001 Page 15 of 16