屋面防水方案.docx
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屋面防水方案.docx
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屋面防水方案
一、Sanafil防水系统施工方案Sanafilwaterproofingsystemconstructionmethodstatement
✧施工说明constructiondescription
本项目屋面Sanafil防水系统构造层次为:
压型钢板,0.3mm厚PE膜隔气层,180mm厚岩棉板保温层(岩棉容重:
180kg/m³),1.5mm厚聚酯纤维内增强型PVC防水卷材一道。
TheSanafilwaterproofingsystembuildupforthisprojectis:
metalroofpanel,0.3mmthickPEdampprooflayer,180mmthickrockwoolinsulationlayer(density:
180Kg/m3),1.5mmthickpolyesterfiberreinforcedPVCwaterproofmembraneonelayer.
✧保温层施工方案Installationprocedurefortheinsulationlayer
◆方案介绍:
introduction:
屋面设置180mm厚岩棉板保温层,岩棉容重选取180kg/m³,分三层铺设,第一层为80mm厚岩棉板,第二、三层为50mm厚岩棉板,错缝铺设。
Thereare180mmthickrockwoolinsulationlayer,thedensityofrockwoolis180kg/m3,itseparatedto3layers,thefirstlayerthicknessis80mm,the2ndand3rdlayerthicknessis50mm,theoverlapjointsshallbestaggered.
◆
保温层施工工艺:
theconstructionprocedureofinsulationlayer
固定件选用:
保温层固定件采用岩棉专用高强度、圆形聚丙烯套管(长度8cm-12cm)加高强度、耐酸碱的固定螺钉。
Themechanicalfastener:
thefastenerisanacid-baseproof,highstrengthpolypropylenebolt.
大面保温层铺设方法:
massiveinstallationprocedure:
1、在已铺设完毕的隔气层上铺设岩棉保温板,铺设时上下两层保温板的板缝应错开,板缝错开间距宜大于15cm,同一层的保温板竖向板缝亦应错开,板缝错开间距宜大于30cm,个别部位错开15cm。
installtherockwoolinsulationabovethefinisheddampprooflayer,theoverlapjointshallbestaggeredfornearbylayer,thedistancebetweenjointsshallnotlessthan15cm,theverticaloverlapjointsshallbealsostaggered,andthedistanceshallmorethan30com,locally15comisalsoaccepted.
2、保温层铺设一定面积后,安排施工人员固定岩棉,每块岩棉固定2个固定件,小于300*300mm的岩棉板可以固定1个固定件,每平米固定件约为3个,固定完毕后套管平面应与岩棉板表面平齐或略高于岩棉板表面1-2mm,检查固定件固定牢靠,确保每个固定件都固定到轻钢板基层上,固定件穿透并深入基层2.5cm。
oncetheinsulationhasbeenplacedintopositionandreachedcertainarea,theworkershallstarttofastentherockwool,eachrockwoolshallbefixedwithtwofastener,rockwoolpanelsmallerthan300*300mmcanbefixedwithonefasteneronly,thereshouldbe3fastenersforeachonesquare-meter,thesurfaceoffastenershallbeflashedwiththesurfaceofrockwool,oronly1~2mmhigher,thefastenerhastobecheckedforitstightness,ithastobesurethateachfastenerisfixedintothesteelpanelbaseandtheboltindepthshallnotlessthan2.5cm
3、保温层铺设并固定完成后,安排施工人员清扫表面的岩棉碎屑及其他垃圾,准备铺设PVC防水卷材。
Aftertheinsulationisfixed,theinstallationteamshallcleanofftherockwooldebrisandotherwaste,getreadyforPVCwaterproofmembraneinstallation
✧隔气层及防水层施工工艺:
Dampprooflayerandwaterprooflayerinstallationprocess
Ø
屋面基层清理,将屋面残留的垃圾、杂物清扫干净,铺设保温前用扫帚将屋面轻钢板清扫干净。
Cleantheroofbase,cleanoffleftoverwaste,broomshallbeusedtobrushoffdebrisfromroofpanel.
Ø铺设0.3mm厚PE膜隔气层,隔气层搭接缝宽度8-10cm,接缝处用丁基胶带链接。
Theinstallationof0.3mmthickPEdampprooflayer,thedampprooflayeroverlapwidthis8~10cm,theoverlapjointshallbeconnectedbybutylwaterproofadhesivetape.
Ø铺PVC防水卷材,铺设前清扫岩棉保温层上的杂物,卷材铺设方向应平行于屋脊方向。
施工时,首先要进行放线、预铺,把自然疏松的卷材按轮廓布置在基层上,平整顺直,不得扭曲,接头部位,接头相互错开至少30cm,并进行适当的剪裁,屋脊部位的卷材应用不进行裁剪的整幅卷材覆盖,卷材长边搭接宽度为12cm,其中5cm用于固定件的安装6~7cm用于焊接;短边搭接1cm或对接,用150mm宽非复合卷材覆盖。
焊接缝的接合面应擦干净,无水露点,无油污及附着物。
InstalationofPVCwaterproofmembrane,cleanoffdebrisbeforeinstallation,theroll(longitudinal)directionshallbeparrallertoroofridge,pre-layingshallbemadewithsetoutpreparation,themembraneinstallationonthebaseshallbestraightandsmooth,notwistisallowed,theoverlappositionshallbestaggerednotlessthan30cm,anditshouldbeproperlycutted,theroofridgeshallbecoveredwithfullpiecemembrane,theoverlapwidthis12cm,amongthemthereare5cmformechanicalfixingand6~7cmforwelding;shotedgeconnectionshallbemadewith1cmoverlaporsimpleconnectionbutcoveredwitha150mmthickmembrane,theweldingjointshallbeclean,dampfree,oilfreeandnoattachment.
注意:
所有与PVC直接接触的材料不得选用沥青、焦油、柏油、聚苯乙烯和油类等与渗耐PVC防水卷材不相容的材料,与渗耐卷材直接接触的屋面层次及物质,必须在得到渗耐公司的认可后方可施工。
一旦选用了与渗耐PVC不相容的物质,必须采取清除或隔离措施!
Note:
alldirectcontactsurfacetoPVCmembraneshallnotbeasphalt,tar,andbitumen,polystyreneetc.,whichisincompitabletoPVCwaterproofmembrane,materialdirectcontactroofwaterproofmembrane,mustbeaceptedbySanafilbeforeconstruction,oncetheincompitablematerialbeenadopted,theisolationmeasurementmustbemadeortheincompitablematerialhastoberemoved.
防水卷材的铺设installationofwaterproofmembrane
⏹施工时,首先要进行预铺,把自然疏松的卷材按轮廓布置在基层上,平整顺直,不得扭曲,并进行适当的剪裁。
Duringconstruction,pre-layinghastobemade,therollofmembranecanbelooselyplacedontheroofbase,smoothandstraight,notwistisallowed,withpropercut.
⏹
机械固定法施工时,卷材纵向搭接宽度为120mm,其中的50mm用于固定件(金属垫片和螺钉)的应用,短边搭接1cm或对接,用150mm宽非复合卷材覆盖。
Duringthemechanicalfixing,therolloverlapwithatlongitudinaldirectionis120mm,amongthemthereare5cmformechanicalfixingand6~7cmforwelding;shotedgeconnectionshallbemadewith1cmoverlaporsimpleconnectionbutcoveredwitha150mmthickmembrane
⏹
轻钢屋面防水卷材固定件的间距按照计算所得,用电动螺丝刀将固定螺钉旋入钢板层,并进入不小于20mm。
thefixingspacingonthelightweightsteelroofshallbemadeaccordingtocalculation,thefixingscrewshallbedriveintosteelpanelwithscrew-driver.Theboltindepthshallnotlessthan20mm.
⏹本工程固定件加密区宽度不小于屋面短边长度的十分之一,且不能小于1.5m。
加密区固定件间距取0.94米×0.25米,非加密区固定件间距取1.88米×0.4米。
本工程屋面原轻钢板厚度<0.8mm,所以卷材的固定件有部分应固定在屋面结构檩条上,以增加防水层的牢固性、安全性及抗风揭能力
Inthisproject,thefastenerextrainfillareaforfastenershallnotlessthan10%theroofhorizontallength,andthedistancebetweenfasteneris0.94m*0.25m,nonefastenerextrainfillareathespacingbetweenfasteneris1.88m*0.4m.inthisprojecttheroofpanelthicknessis<0.8mm,thusthemembranefastenershallbefixedontotheroofpurling,toreinforcethestability/safetyandwindproofabilityofthewaterproofsystem.
⏹
防水层固定件采用配套岩棉层使用的高强度、方形聚丙烯套管(长度8cm-12cm)加高强度、耐酸碱的固定螺钉。
Thewaterproofmembranefastenerisandesignedforrockwoolinstallation,acid-baseproof,highstrengthpolypropylenebolt,length8~12cm.
Ø防水细部处理detailtreatment
⏹卷材收口:
按照细部构件的形状,用PVC卷材包裹,卷材包裹有难度的,不能保证防水效果的,应用西卡液体卷材涂刷,并且与pvc卷材搭接100mm,密封膏密封。
Edgetreatment:
accordingtotheshapeofthestructure,tocovertheexposedpartswithPVCmembrane,ifitisnotpossibletocoverwithPVCmembrane,itshallbepaintedwithSikaliquidmembrane,andoverlappedwithPVCmembrane,sealedwithmastic.
⏹
阴阳角处理:
阴阳角处以焊接法增铺附加卷材,附加卷材按各处形状折叠、裁剪后焊接。
Cornertreatment:
additionalPVCmembraneshallbeweldedatthecorner,theadditionalPVCmembraneshallbefoldedtofitthecornerandaccordinglywelded.
⏹
屋面天沟处理Roofguttertreatment
施工步骤:
Constructionsteps
1)、清理天沟内的垃圾、杂物,重点清理落水口及阴角部位;cleanoffwasteranddebrisleftintheroofgutter,mainlycleanofthedownspotandnegativecorner.
2)、在天沟底部与两侧铺设PE膜隔气层;placethePUdampprooflayerattheraingutterbottomandsidesurface.
3)、在天沟底部与两侧铺设40mm或50mm厚岩棉保温板;layinginthe40mmor50mmthickrockwoolinsulationpaneltothebottomandsidesurfaceofraingutter.
4)、将卷材沿天沟底部宽度,通长铺设,在两侧阴角位置增加U型压条,固定卷材,与大面相连的一侧立面,卷材收于屋面板下部,女儿墙一侧收于泛水板下册1cm处,收口位置涂膜密封胶。
LayingdownthePVCmembranealongtheraingutter,applyUtypefixingtripatthenegativecorner,tofixthemembrane,attheroofpanelsidethemembraneshallbefoldedunderroofpanel.Attheparapetside,thewaterproofmembraneshallbeclosedat1cmbelowthecapping,sealedwithsealant.
Ø防水层施工质量标准及检测验收constructionqualitystandard,inspectionandacceptanceforthewaterprooflayer.
PVC防水卷材PVCwaterproofmembrane
宽幅PVC防水卷材其施工质量除严格按照国家及地方的屋面防水规范执行,卷材焊接时,焊嘴与焊接方向成45。
角,压辊与焊嘴平行并保持约5mm左右距离,滚压不宜过快。
WidePVCwaterproofmembrane,itsconstructionqualityshallstrictlyfollownationalandlocalroofwaterproofstandard,duringtheweldingofmembrane,theweldingbuttshallbe45degreetotheweldingdirection,therollerandweldingbuttshallbeparallelandwithadistancefor5mm.
使用焊嘴宽20mm的小焊嘴施焊,一般为两道,焊接温度控制在第6档,每道焊接有效宽度为15mm~20mm。
ifasmallerweldingbuttisadopted(20mmwide),twotimesweldingshallbemade,theweldingtemperatureshallbesettolevel6,thevalidweldingwidthis15mm~20mm.
使用焊嘴宽40mm的大焊嘴施焊宜为一道,焊接温度控制在第7档,焊接有效宽度为25mm。
ifabiggerweldingbuttisadopted(40mmwide),oneweldingisacceptable,theweldingtemperatureshallbesettolevel7,weldingwidthis25mm.
焊接要求:
应在焊前预焊一道,宽度不宜过宽,使施焊时热风不至于溢出而影响施焊质量。
焊接边缘应有熔浆溢出,但不得出现烧焦现象。
Weldingrequirement:
pre-weldingisrequired,widthshallnotbebigandlimitedtoensuretheweldinghotairisnotspreadingouttoaffectweldingquality.ThePVCmembraneshouldbemeltedbutnotburned.
检测方法如下:
testmethod
1、
自动焊机焊接:
焊机温度为500~550℃,焊接速度为1.8m~2.5m/min.具体情况视现场的条件(温度、湿度)而定。
自动焊机由专人专门进行操作。
Automaticweldingwithweldingmachine:
theweldingtemperatureshallbe500~559degree,weldingspeedshallbe1.8m~2.5m/Minute,dependonsitecondition(temperature/humidity).Theautomaticweldingmachineshouldbeoperatedbynominatedperson.
2、手工焊接:
焊枪温度控制在250~450℃之间,焊接速度1.0~1.5m/min,焊接时用手动压辊压实,随焊随压。
Handwelding:
weldingtemperatureis250~450degree,weldingspeedis1~1.5m/minute,thehandrollershallbeusedwhilewelding,tosqueezetheweldingjoint.
3、焊缝质量检测方法:
目测、机械检测。
Weldingqualitytestmethod:
eyeballing/machinicaltest
目测:
焊接缝不允许有发黄、烧焦现象,焊缝边缘光滑,有均匀发亮的熔浆出现;
Eyeballing:
weldingjointshallnotbeburnedorchangetoyellowcolor,theweldingjointshallbesmooth,andthePVCisuniformlymelted.
机械检测:
用平口螺丝刀或勾针沿焊缝稍微
用力挑试,检查有无漏焊点、虚焊点。
如
发现缺陷应及时修补;
Mechanicaltest:
usetheflatscrewdriverorpaperclipstopickslightly,tocheckifanylooseweldingornoneweldedpoint.Itshallbeimmediatelyfixedifany.
四、施工保护protectionduringconstruction
1、施工过程中应严格注意,避免固定件或其它尖锐物损坏材料。
Itisstrictlyrequiredtopayattention,toavoidanycut(tomembrane)bysharpthings.
2、防水施工完毕,应有专人检查,如有损坏点应及时补焊。
Oncethewaterproofmembraneinstallationfinished,thereshouldbenominatedpersonforinspectionandtest,itshallberepairedifanydamage.
3、后序其他安装工作应对屋面防水层采取有利的保护措施。
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