屋面防水方案.docx

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屋面防水方案.docx

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。

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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